1953C-BB - Marine Electronics FURUNO - Free user manual and instructions

Product Type	Marine Radar/Chartplotter Combo
Model	1953C-BB
Brand	Furuno
Display Size	10.4 inches color LCD
Resolution	640 x 480 pixels
Power Supply	12-24 V DC
Power Consumption	Approx. 40 W
Weight	Approx. 5.0 kg (11 lbs)
Dimensions (W x H x D)	310 x 280 x 110 mm (12.2 x 11.0 x 4.3 in)
Radar Output Power	4 kW
Radar Range	Up to 36 nautical miles
GPS Receiver	Internal 50-channel GPS
Chart Plotter Functions	Waypoints, routes, tracks, AIS overlay
Waterproof Rating	IPX6 (splash-proof)
Operating Temperature	-15°C to +55°C (5°F to 131°F)
Storage Temperature	-20°C to +60°C (-4°F to 140°F)
Cleaning	Wipe with a soft damp cloth; avoid solvents
Safety	Install by qualified personnel; disconnect power before maintenance
Spare Parts	Radar antenna, mounting bracket, power cable, manuals
Repairability	Repairs should be performed by authorized Furuno service centers

Frequently Asked Questions - 1953C-BB FURUNO

How do I install the Furuno 1953C-BB radar/chartplotter?

Installation should be performed by a qualified marine electronics technician. Ensure proper mounting on a stable bracket, connect to 12-24V DC power, and verify antenna alignment.

What type of radar antenna does the 1953C-BB use?

It uses a 4 kW open array radar antenna, typically model RSB-0071 or similar. Refer to the manual for specific compatibility.

How do I update the chart data?

Chart data can be updated via a microSD card. Download charts from Furuno's C-MAP or Navionics website and insert the card into the unit's slot.

Can the 1953C-BB display AIS targets?

Yes, the unit supports AIS (Automatic Identification System) overlay. You need an external AIS receiver and connect it via NMEA 0183 or 2000.

What is the maximum radar range?

The maximum radar range is 36 nautical miles, depending on antenna height and target size.

How do I clean the screen?

Use a soft, lint-free cloth slightly dampened with water. Do not use alcohol, ammonia, or abrasive cleaners.

Is the unit waterproof?

Yes, it has an IPX6 rating, meaning it is protected against powerful water jets. However, it should not be submerged. Use a protective cover when not in use.

What power supply is required?

The unit requires 12-24V DC, drawing approximately 40W. Ensure the power cable is properly fused (recommended 5A fuse).

How do I reset the unit to factory defaults?

Turn off the unit. Press and hold the MENU key while turning the power on. Select 'Factory Reset' from the display menu. Note that this erases all user settings.

Where can I find replacement parts or accessories?

Contact an authorized Furuno dealer or visit the Furuno website. Common accessories include replacement antennas, mounting brackets, and connection cables.

USER MANUAL 1953C-BB FURUNO

ELECTRICAL SHOCK HAZARD Do not open the equipment.

Only qualified personnel should work inside the equipment.

Turn off the radar power switch before servicing the antenna unit. Post a warning sign near the switch indicating it should not be turned on while the antenna unit is being serviced.

Prevent the potential risk of being struck by the rotating antenna and exposure to RF radiation hazard.

Do not disassemble or modify the equipment.

Fire, electrical shock or serious injury can result.

WARNING

Radio Frequency Radiation Hazard

The radar antenna emits electromagnetic radio frequency (RF) energy which can be harmful, particularly to your eyes. Never look directly into the antenna aperture from a close distance while the radar is in operation or expose yourself to the transmitting antenna at a close distance.

Distances at which RF radiation levels of 100 and 10 W/m ^2 exist are given in the table below.

Note: If the antenna unit is installed at a close distance in front of the wheel house, your administration may require halt of transmission within a certain sector of antenna revolution. This is possible - Ask your FURUNO representative or dealer to provide this feature.

MODEL

Distance to 100 W/m ^2 point

Distance to 10 W/m² point

TABLE OF CONTENTS

FOREWORD ...... viii

SYSTEM CONFIGURATIONS .... x

1.1 Operating Controls 1-2

1.2 Inserting a Chart Card 1-4

1.3 Turning the Unit On/Off 1-5

1.4 Adjusting Hue, Panel illumination 1-6

1.5 Selecting a Display 1-7

1.5.1 Display modes.... 1-7

1.5.2 Selecting a display.... 1-8

1.5.3 Switching control in combination and overlay screens.... 1-9

1.5.4 Selecting image source 1-10

1.6 Trackball, Cursor 1-11

1.7 Entering the MOB Mark, Setting MOB as Destination.... 1-12

1.8 Data Boxes.... 1-13

1.8.1 Showing, hiding data boxes with soft key.... 1-13

1.8.2 Rearranging data boxes 1-14

1.8.3 Temporarily erasing a data box.... 1-14

1.9 Function Keys.... 1-15

1.10 Simulation Display 1-16

1. BADAR OPERATION 9.1

2.15 Zoom....2-18

2.15.1 Zooming in on radar targets....2-18
2.15.2 Zooming in on ARP, TTM targets....2-18

2.16 Shifting the Picture 2-19

2.16.1 Manual shift 2-19
2.16.2 Automatic shift....2-20

2.17 Using the Offset EBL.... 2-21

2.17.1 Predicting collision course....2-21
2.17.2 Measuring range & bearing between two targets....2-22

2.18 Echo Trails 2-23

2.18.1 Trail time 2-23
2.18.2 Starting echo trails 2-24
2.18.3 Trail gradation 2-24
2.18.4 Trail color 2-25
2.18.5 Echo trail mode....2-25

2.19 Echo Stretch....2-26

2.20 Echo Averaging 2-27
2.21 Outputting TLL Data 2-28
2.22 Guard Alarm.... 2-29

2.22.1 Setting a guard alarm zone....2-29
2.22.2 When the alarm is violated....2-30
2.22.3 Canceling the guard alarm....2-30

2.23 Watchman.... 2-31

2.23.1 How watchman works....2-31
2.23.2 Turning on/off watchman....2-31
2.23.3 Setting watchman stand-by interval....2-31

2.24 Suppressing Second-trace Echoes 2-32
2.25 Waypoint Marker 2-33
2.26 ARP, TTM Operation 2-34

0.004 Activation/deactivation ADD TTM 0.05

3. PLOTTER OPERATION....3-1

3.1 Plotter Displays.... 3-1

3.1.1 Full-screen plotter display.... 3-1
3.1.2 Compass display.... 3-3
3.1.3 Highway display 3-5
3.1.4 Nav data display 3-6

3.2 Presentation Mode.... 3-7

3.2.1 North-up 3-7
3.2.2 Course-up 3-8
3.2.3 Auto course-up 3-8

3.3 Shifting the Display 3-9

3.4 Chart Scale 3-9
3.5 Chart Cards 3-10

3.5.1 Chart card overview.... 3-10
3.5.2 Indices and chart enlargement....3-11
3.5.3 FURUNO and NavCharts™ charts 3-12
3.5.4 C-MAP charts 3-14

3.6 Working with Track 3-18

3.6.1 Displaying track 3-18
3.6.2 Stopping, restarting plotting of own ship track.... 3-1
3.6.3 Changing track color 3-20
3.6.4 Track plotting method and interval for own ship track 3-21
3.6.5 Changing own ship track/mark distribution setting 3-22
3.6.6 Erasing track 3-23

3.7 Marks, Lines 3-25

3.7.1 Entering a mark, line 3-25
3.7.2 Changing mark attributes.... 3-25
3.7.3 Selecting line type 3-26

3.11 Alarms 3-52

3.11.1 Audio alarm on/off 3-52

3.11.2 Arrival alarm 3-53

3.11.3 Anchor watch alarm....3-54

3.11.4 XTE (Cross-Track Error) alarm....3-55

3.11.5 Speed alarm....3-55

3.11.6 Proximity alarm 3-56

3.11.7 Trip alarm 3-57

3.11.8 Alarm information 3-58

3.12 Resetting Trip Distance 3-60

4.1 Principle of Operation....4-1

4.2 Sounder Displays.... 4-2

4.2.1 Selecting a sounder display 4-2

4.2.2 Description of sounder displays 4-3

4.2.3 Selecting screen split method in combination displays....4-8

4.3 Automatic Sounder Operation 4-9

4.3.1 How the automatic sounder works 4-9

4.3.2 Types of automatic sounder modes....4-9

4.3.3 How to enable automatic sounder operation 4-9

4.4 Manual Sounder Operation....4-10

4.4.1 Selecting the manual mode....4-10

4.4.2 Selecting display range....4-10

4.4.3 Adjusting the gain....4-10

4.4.4 Shifting the range.... 4-11

4.5 Measuring Depth, Time 4-12

4.6 Reducing Interference....4-13

4.7 Reducing Low Level Noise....4-14

4.8 Frasing Weak Echoes 4-15

4.15 Interpreting the Sounder Display.... 4-27

4.15.1 Zero line 4-27
4.15.2 Bottom echo 4-27
4.15.3 Fish school echoes.... 4-28
4.15.4 Surface noise/Aeration 4-28

5. CUSTOMIZING YOUR UNIT....5-1

5.1 General Setup 5-1
5.2 Radar Setup 5-3

5.2.1 Radar display setup.... 5-3

5.2.2 Radar range setup.... 5-6
5.2.3 Function key setup 5-7

5.3 Plotter Setup 5-9

5.3.1 Navigation options.... 5-9
5.3.2 Function key setup 5-10

5.4 Chart Setup 5-12

5.4.1 Chart offset.... 5-12
5.4.2 FURUNO, NavCharts™ chart attributes 5-13
5.4.3 C-MAP chart attributes 5-15

5.5 Data Boxes Setup 5-18
5.6 Hot Page Setup 5-19
5.7 Navigator Setup.... 5-21

5.7.1 Navigation data source 5-21
5.7.2 GPS receiver setup (Set equipped with GP-310B/320B) 5-22
5.7.3 TD display setup.... 5-26

5.8 Nav Data Display Setup 5-28

5.9 Sounder Setup.... 5-29

5.9.1 System setup.... 5-29
5.9.2 Sensor setup 5-31

7. MAINTENANCE, TROUBLESHOOTING ....7-1

7.1 Preventive Maintenance....7-1
7.2 Replacement....7-1

7.2.1 Replacement of the battery 7-1
7.2.2 Replacement of the fuse 7-2
7.2.3 Replacement of the magnetron....7-2
7.2.4 Replacement of the synchro belt 7-2

7.3 Trackball Maintenance 7-3
7.4 Simple Troubleshooting....7-4

7.4.1 General 7-4
7.4.2 Radar 7-4
7.4.3 Plotter 7-5
7.4.4 Sounder 7-6

7.5 Diagnostics 7-7

7.5.1 Memory I/O test 7-7
7.5.2 Test pattern....7-10
7.5.3 Keyboard test of the control unit.... 7-11

7.6 GPS Status Display 7-12

7.7 Clearing Memories....7-13
7.8 Error Messages....7-14

APPENDIX ...... AP-1

Menu Overview....AP-1
Geodetic Chart List....AP-10
World Time Chart....AP-11
Icons....AP-12
What is WAAS?......AP-13

FOREWORD

A Word to the Owner of the Model 1800C-BB/1900C-BB Series Marine Radar, GD-1900C-BB Color Video Plotter

FURUNO Electric Company thanks you for purchasing the Model 1800C-BB/1900C-BB Series Marine Radar, GD-1900C-BB Color Video Plotter. We are confident you will discover why the FURUNO name has become synonymous with quality and reliability.

For over 50 years FURUNO Electric Company has enjoyed an enviable reputation for quality and reliability throughout the world. This dedication to excellence is furthered by our extensive global network of agents and dealers.

Your equipment is designed and constructed to meet the rigorous demands of the marine environment. However, no machine can perform its intended function unless properly installed and maintained. Please carefully read and follow the operation and maintenance procedures set forth in this manual.

We would appreciate feedback from you, the end-user, about whether we are achieving our purposes.

Thank you for considering and purchasing FURUNO.

The example screens shown in this manual may not match the screens you see on your display. The screen you see depends on your system configuration and equipment settings.

Features

The 1800C-BB/1900C-BB series of radars and video plotters work within our new product-network system called the "NavNet." Each product has an IP address to communicate with NavNet compatible products within the network, using TCP/IP protocol through an Ethernet 10BASE-T network.

The main features are as follows:

- The 1800C-BB/1900C-BB series of radars and video plotter consist of the following models:

Model	Output		Range Radar Antenna
Marine Radar Model 1823C-BB 2.2	kW 24 rpm 1	5 ft, Radome
Marine Radar Model 1833C-BB 4 kW	36 nm 2 ft,	Radome
Marine Radar Model 1933C-BB 4 kW	48 nm 3.5 ft,	Open
Marine Radar Model 1943C-BB 6 kW	64 nm 4 ft,	Open
Marine Radar Model 1953C-BB 12	72 nm 4/6 ft,	Open
Color Video Plotter GD-1900C-BB	—	—	—

(These models have no monitor unit. The customer should prepare it.)

• User friendly operation with combination of discrete keys, soft keys, alphanumeric keys and trackball.
• Accepts FURUNO and Nav-charts™ (NAVIONICS) charts, or C-MAP NT/NT+ charts (C-MAP), depending on specification.

Note: All names mentioned above are registered trademarks of their respective

SYSTEM CONFIGURATIONS

All NavNet products incorporate a "network circuit board" to integrate each NavNet product on board through an optional LAN cable (Ethernet 10BASE-T). Each NavNet product is assigned an IP address to enable transfer of images between other NavNet products. For example, video plotter pictures can be transferred to a radar and vice versa. Pictures received via the NavNet may be adjusted at the receiving end.

The number of processor units which may be installed depends on the number of network sounder connected. For a system incorporating three or more products, a "hub" is required to process data.

For one network sounder: one radar and three plotters (or four plotters) For two network sounders: one radar and two plotters (or four plotters)

NavNet system (Model 1823C-BB/1833C-BB/1933C-BB/1943C-BB/1953C-BB)

graph TD
    A["Power Supply Unit PSU-005"] --> B["Control unit"]
    B --> C["Processor unit RPU-014"]
    C --> D["Antenna Unit"]
    D --> E["MODEL 1953C-BB"]
    D --> F["MODEL 1933C-BB"]
    D --> G["MODEL 1943C-BB"]
    D --> H["MODEL 1823C-BB"]
    H --> I["POWER"]
    H --> J["GPS receiver GP-310B/320B"]

Single-unit NavNet system (GD-1900C-BB)

graph TD
    A["GPS receiver GP-310B/320B"] --> B["Processor unit RPU-014"]
    B --> C["Control unit RCU-017"]
    B --> D["VGA monitor (Owner supply)"]
    B --> E["Plotter, etc."]
    B --> F["Rectifier PR-62"]
    B --> G["Network Sounder ETR-6/10N ETR-30N"]
    B --> H["Facsimile Receiver FAX-30"]
    B --> I["Other NavNet system (Model 1833C-BB, etc.)"]
    B --> J["12 - 24 VDC"]
    B --> K["100/110/115/220/230 VAC 1φ, 50/60 Hz"]

Two-unit NavNet system

graph TD
    A["Radar Antenna Unit OR GPS Receiver GP-310B/320B"] --> B["RADAR or PLOTTER"]
    C["Radar Antenna Unit OR GPS Receiver GP-310B/320B"] --> D["RADAR or PLOTTER"]
    B --> E["Radar, plotter data"]
    D --> E
    E --> F["← Radar, plotter data"]

Two-unit NavNet system

Three-or-more-unit NavNet

graph TD
    A["Radar Antenna Unit OR GPS Receiver GP-310B/320B"] --> B["RADAR or PLOTTER"]
    C["Radar Antenna Unit OR GPS Receiver GP-310B/320B"] --> D["RADAR or PLOTTER"]

1. OPERATIONAL OVERVIEW

This chapter provides the basic information needed to get you started using your radar, video plotter. The following topics are presented:

• Control overview
  • Chart card insertion
• Power on/off
  • Brilliance and hue adjustments
• Display selection
  • MOB (Man OverBoard) mark entry
• Data boxes
• Function keys

• Simulation display

• OPERATIONAL OVERVIEW

1.1 Operating Controls

Overview of control unit

The radar, video plotter, sounder and chart systems are operated with the control unit. Ten keys are labeled and they provide the function shown on their labels. The five soft keys provide various functions according to current operating mode. The [ENTER] knob mainly functions to register selections on the menu and adjust the EBL, VRM and gain. The trackball's main function is to move the cursor across the screen. When you correctly execute an operation, the unit generates a beep. Invalid operation causes the unit to emit three beeps.

The function of the five soft keys (A, B, C, D and E) changes according to the operation. Their labels for their current functions are shown on the screen. To hide or show the soft keys, press the [HIDE/SHOW] key. Each press of the key shows preset soft keys, user function keys or turns off navigation information (at the top of the screen).

Some soft keys show the current status of the soft key function in reverse video as shown below.

Radar and plotter displays

1. OPERATIONAL OVERVIEW

1.2 Inserting a Chart Card

Your unit reads FURUNO and Nav-Charts™ (NAVIONICS) chart cards, or C-MAP chart cards, depending on the type of processor unit you have. Insert the appropriate chart card for your area as follows:

1. Open the chart drive.

Processor unit

1. Insert desired chart card groove side up.
2. Close the lid to protect the chart drive.

Note 1: Do not remove a card while the chart is being drawn. This may cause the equipment to freeze.
Note 2: Do not insert or remove a card while the power is on. This may cause the equipment to freeze.
Note 3: For multiple processor units, do not use the same chart card type in more than one processor unit.

1.3 Turning the Unit On/Off

Press the [POWER/TX] key on the control unit to turn on the power. The POWER lamp on the processor unit lights. A beep sounds and the equipment proceeds in the sequence shown below, displaying product information, startup test results and the chart usage disclaimer. The startup test checks the ROM, RAM, internal battery and backup data for proper operation, displaying the results for each as OK or NG (No Good). If NG appears try to press any key to go to the chart disclaimer screen, then perform the diagnostic test as shown in the paragraph "7.5 Diagnostics."

graph LR
    A["Product information"] --> B["Startup test"]
    B --> C["Chart disclaimer"]

    subgraph Product information
        D["RADAR PLOTTER*"]
        E["STATION NAME: RADAR#"]
        F["FURUNO ELECTRIC CO., LTD."]
        G["CHARTS AVAILABLE LICENSE NO."]

    end

    subgraph Startup test
        H["STARTUP TEST"]
        I["ROM OK"]
        J["RAM OK"]
        K["BACKUP DATA OK"]
        L["INTERNAL BATTERY OK"]

    end

    subgraph Chart disclaimer
        M["NO NATIONAL HYDROGRAPHIC: OFFICE HAS VERIFIED THEI INFORMATION IN THIS COASTLINE DATA CARD AND NONEDI ACCEPT LIABILITY FOR THE II ACCUACY OF REPRODUCTION ORI ANY MODIFICATIONS MADE II THEREAFTER. THIS PRODUCT WITHI THIS COASTLINE DATA CARD DOES NOT REPLACE THE REQUIREMENT TO USE THEI APPROPRIATE PRODUCTS FORI NAVIGATION ACCORDING TOI NATIONAL AND INTERNATIONALI REGULATIONS. PROGRAM No. 1950011 XXX**"]

    end

    D --> H
    E --> H
    F --> H
    G --> H
    H --> I
    I --> J
    J --> K
    K --> L
    L --> M

For start up with the radar display, the magnetron takes from one minute to two minutes and thirty seconds (depending or radar model) to warm up before the radar can be operated. The time remaining for warming up the magnetron is

1.4 Adjusting Hue, Panel Illumination

You may select the colors for the radar, plotter and overlay displays, and adjust the panel illumination as below.

1. Press the [POWER/TX] key momentarily. A set of soft keys appears.

Radar Display

Plotter Display

1. Press the C:HUE soft key to show the hue setting window.

Hue window

1. OPERATIONAL OVERVIEW

2. Press the B: PANEL BRILL soft key. The panel illumination adjustment window appears at the bottom of the screen. This window shows the current illumination level by bar graph.

panel brilliance windows

1. Adjust the [ENTER] knob, clockwise to raise the setting or counterclockwise to decrease it.

2. Hit the E: RETURN soft key to finish.

1.5 Selecting a Display

1.5.1 Display modes

If you have a radar, navigator, network sounder, weather faximile and external video source (video recorder, etc.) seven full-screen displays are available: radar, plotter, echo sounder, nav data, overlay, weather faximile, and external video. In addition to the full-screen display, you can divide the screen into halves and thirds to show two and three sets of images on a combination display.

1. OPERATIONAL OVERVIEW

1.5.2 Selecting a display

1. Press the [DISP] key to show the display selection window. The icons of modes not available are shaded. HOTPAGE 1-HOTPAGE 6 are user-arrangeable displays called "hot pages," which you can configure as you like. For further details, see the paragraph "5.6 Hot Page Setup."

Display screen selection window

Note: "WX FAX" is available only when the facsimile receiver FAX-30 is connected. If "AUX SOURCE IS DISCONNECTED. PUSH ENT KNOB TO EXIT." appears, press the [ENTER] knob and select other item.

1. Rotate the [ENTER] knob to select a basic display screen or a hot page screen.
2. Push the [ENTER] knob.

3. If you selected a basic display screen, a group of appropriate combination displays appear. In the example below, the radar combination screens are

4. OPERATIONAL OVERVIEW

1.5.3 Switching control in combination and overlay screens

A soft key is provided in relevant combination and overlay screens to switch control between displays. In the example below, the E:PLOTTR CNTRL and E:SNDR CNTRL soft keys enable switching control between the plotter and sounder screens in the plotter/sounder combination display.

Plotter display selected

1. OPERATIONAL OVERVIEW

1.5.4 Selecting image source

When more than one network radar or network sounder is connected to the equipment, you may select an image source for each as shown below. This is not necessary when only one network radar or network sounder is connected.

1. Press the [DISP] key.
2. Press any soft key to show the following display.

Select source menu

1. Use the trackball to select RADAR SOURCE, SOUNDER SOURCE or AUX SOURCE as appropriate, then press the A: EDIT soft key.

The trackball functions to shift the cursor, for measurement of range and bearing to a location (radar) and latitude and longitude position (plotter). Roll the trackball to shift the cursor. The cursor moves in the direction of trackball rotation.

Cursor Data
Bearing from own ship to cursor
Range from own ship to cursor

Radar Display

1.7 Entering the MOB Mark, Setting MOB as Destination

The MOB (Man Overboard) mark functions to mark man overboard position. You can inscribe this mark from any mode, except while playing back data or conducting any test. Note that this function requires position data.

graph TD
    A["Range, bearing"] --> B["Man overload"]
    B --> C["Current position"]
    D["MOB Data Box"] --> E["M (MOB)"]
    E --> F["162.5°M"]
    E --> G["B 0.49 nm"]

MOB concept

1. Press and hold down the [SAVE/MOB] key for about three seconds when someone falls onboard. The display shows the waypoint number being saved (youngest empty waypoint number, 001-999) followed by the MOB confirmation window.

graph LR
    A["WAYPOINT SAVED!"] --> B["CONTINUE PUSHING FOR MOB!"]
    B --> C["MAN OVER BOARD! GO TO MOB? YES ... PUSH ENTER KNOB NO ... PUSH CLEAR KEY"]
    A --> D["XXXWPT CONTINUE PUSHING FOR MOB!"]
    D --> B
    B --> E["*SEC"]

Data boxes, providing navigation data, may be shown on any full-screen display. Up to six data boxes (two in case of large characters) may be shown, and the default data boxes are position (in latitude and longitude), course over ground, speed over ground and trip log. The user may choose which data to display, where to locate it, and show or hide it as desired. In addition, data boxes may be set independently for each display mode (plotter, radar, sounder). For how to select data for the data boxes, see the paragraph "5.5 Data Boxes Setup."

Radar Display

1. OPERATIONAL OVERVIEW

1.8.2 Rearranging data boxes

You may select the location for data boxes as follows:

1. Using the trackball, place the cursor inside the data box you wish to move. As the cursor enters the box it changes to an open hand. Push the [ENTER] knob, and the hand changes to a fist, meaning the box is correctly selected.
2. Use the trackball to move the data box to the location desired, then push the [ENTER] knob to anchor the box.

1.8.3 Temporarily erasing a data box

If a data box is obscuring a desired object you may temporarily erase the box. Use the trackball to place the cursor inside the data box you wish to erase, then press the [CLEAR] key. To redisplay the box, press the D. BOX soft key twice.

The function keys provide for one-touch execution of a desired function. The default function key settings are as shown in the table below.

Key	Default Setting, Key Label Function
	Radar	Plotter	Sounder
#1 Heading line on/off, HL Track	on/off, TRK TLL output, TLL
#2 Rings on/off, RNG Edit mark	line, EML Clutter, CLT
#3 Echo trail, TRL Ruler, RUL	Signal level, SLV
#4 Offcenter, SFT Add new waypoint, ADD			Noise limiter, NL
#5 Radar source, RSR	Waypoint alphanumeric list, ALP		Picture advance, PA

Executing a function

1. Press the [HIDE/SHOW] key to replace the preset soft key labels with the function key labels.

1. OPERATIONAL OVERVIEW

1. Press function key desired.

Note: Function keys can be individually programmed for the plotter, radar and sounder displays. For further details see the following:

Radar: paragraph 5.2.3

Plotter: paragraph 5.3.2

Sounder: paragraph 5.9.4

1.10 Simulation Display

The simulation display, for use by service technicians for demonstration purposes, provides simulated operation to help acquaint you with the many features your unit has to offer. It allows you to view and control a simulated plotter, radar and sounder picture, without position-fixing equipment, network radar or a network sounder. Most controls are operative, thus you may practice setting destination, enter waypoints, measure range and bearing to a target, etc.

The simulation icon (☐) appears when any simulation mode is active.

To start the simulation display;

1. Press the [MENU] key.
2. Press the E:SYSTEM CONFIGURATION, C:SYSTEM SETUP and D:SIMULATION SETUP soft keys in that order.

Radar

NavNet processor unit-generated echoes

1. Select RADAR, then press the A:EDIT soft key.

1. Select SIMULATION 1, then push the [ENTER] knob.
2. Press the [MENU] key to close the menu.

NavNet radar antenna-generated echoes (not available with the GD-1900C-BB)

1. Select RADAR SIMULATION DATA, then press the A:EDIT soft key.
2. Select YES, then push the [ENTER] knob to erase simulation data and get new data. The message "Now getting simulation data. Do not turn off processor unit." appears while the unit is receiving radar data.

Note: If the network radar could not be found "Radar source is not found. Cannot get demo data." appears. And if the radar is not active, the message "Radar is not active. Cannot get demo data." is displayed. Check that the radar is plugged in and its signal cable is firmly fastened.

1. Select RADAR, then press the A:EDIT soft key.
2. Select SIMULATION 2, then push the [ENTER] knob.
3. Press the [MENU] key to close the menu.

Plotter

1. Select PLOTTED, then press the A-EDIT soft key

1. OPERATIONAL OVERVIEW

1. Select LONGITUDE, then press the A:EDIT soft key.
2. Enter longitude (setting range, 180^ E- 180^ W, default setting, 125^ 0.000'W). To change W to E, or vice versa, press the A: W <--> E soft key. Then push the [ENTER] knob.
3. Select START DATE & TIME, then press the A:EDIT soft key.
4. Enter start date and time by rotating the trackball and [ENTER] knob, then push the [ENTER] knob.
5. Press the [MENU] key to close the menu.

Sounder

1. Select SOUNDER, then press the A:EDIT soft key.

1. Select SIMULATION 1 (internally generated echoes) or SIMULATION 2 (network sounder-generated echoes), then push the [ENTER] knob.

Note: The depth, shift, bottom-zoom, bottom-lock and bottom discrimination cannot be shown at SIMULATION 1 mode.

1. Press the [MENU] key to close the menu.

2. RADAR OPERATION

This chapter covers radar operation, including the ARP (Auto Plotter) function. ARP requires a Model 1800-BB/1900-BB series network radar equipped with the ARP circuit board.

2.1 Radar Display

2. RADAR OPERATION

2.2 Transmitting, Stand-by

1. Confirm that the network radar is plugged in if necessary.
2. Press the [DISP] key to select a radar display.
3. Press the [POWER/TX] key momentarily.
4. Press the D:RADAR STBY soft key to highlight TX on its label.
5. Press the E:RETURN soft key.

When the radar picture is not required, but you want to keep it in a state of readiness, press the D:RADAR TX soft key to highlight STBY on its label.

2.3 Tuning

The radar receiver can be tuned automatically or manually, and the default tuning method is automatic. If you require manual tuning, do the following:

1. Press the [MENU] key to display the main menu.
2. Press the A:RADAR DISPLAY SETUP soft key.
3. Select TUNING, then press the A:EDIT soft key.

Tuning window

1. Choose MAN.
2. Adjust the [ENTER] knob until the tuning bar is at its longest position.
3. Press the [MENU] key to close the menu.

2. RADAR OPERATION

1. Press the [GAIN] key to show the "gain adjustment" soft keys, and the last-used adjustment window appears. The example below shows the gain sensitivity adjustment window. The gain soft keys shown depend on radar source as shown below.

Gain adjustment soft key

1. Press the A:GAIN soft key to show the gain sensitivity setting window.

Gain sensitivity window

1. Use the trackball to select AUTO ROUGH, AUTO MODERATE, AUTO CALM, or MAN (manual) as appropriate. Select an AUTO option according to the sea state.

2. RADAR OPERATION

2.5 Reducing Sea Clutter

2.5.1 How the A/C SEA works

Echoes from waves can be troublesome, covering the central part of the display with random signals known as "sea clutter". The higher the waves and the higher the antenna above the water, the further the clutter will extend. Sea clutter may affect radar performance because real targets are sometimes hidden by the echoes of small waves. (See the left-hand figure in the figure below.) When sea clutter masks the picture, adjust the A/C SEA to reduce the clutter.

The A/C SEA reduces the amplification of echoes at short ranges (where clutter is the greatest) and progressively increases amplification as the range increases, so amplification will be normal at those ranges where there is no sea clutter.

Sea clutter at screen center

A/C SEA adjusted; sea clutter suppressed

Effect of A/C SEA

2.5.2 Adjusting the A/C SEA

A/C SEA should be adjusted so that the clutter is broken up into small dots, and small targets become distinguishable.

1. When the radar source is the Model 1800-BB/1900-BB series, sea clutter and rain clutter can be automatically rejected. Press the D: A/C AT ON/OFF soft key to select ON or OFF as appropriate. When turned on, it overrides A/C SEA and A/C RAIN settings.
2. Press the [GAIN] key on the front panel or E:RETURN soft key to finish.

2.6 Reducing Precipitation Clutter

The vertical beamwidth of the antenna is designed to see surface targets even when the ship is rolling. However, by this design the unit will also detect precipitation clutter (rain, snow, hail, etc.) in the same manner as normal targets. Precipitation clutter shows as random dots on the screen.

Adjusting the A/C RAIN

When echoes from precipitation mask solid targets, adjust the A/C RAIN to split up these unwanted echoes into a speckled pattern, making recognition of solid targets easier.

1. Press the [GAIN] key.
2. Press the C:A/C RAIN soft key to show the A/C RAIN window.

A/C RAIN setting window

1. Rotate the [ENTER] knob to adjust the A/C RAIN. The current level is shown on the A/C RAIN level bar in the A/C RAIN window, and the range of adjustment is 0 to 100. Do not overadjust – weak echoes may be missed.

2. RADAR OPERATION

2.7 Range Scale

The range setting determines the size of the area (in nautical miles) that will appear on your display. In addition, the range setting will also automatically adjust the range ring interval so that accurate range measurements may be made while operating on any range setting.

The range, range ring interval and pulselength appear at the top left-hand corner of the display.

Press the [RANGE (+ or -)] key to change the range scale.

Range scales (nm. sm)

Range	0.125	0.25	0	5	0	75	1	1.5	2	3	4	6	8	12	16	24	36	48
Ring Interval	0.0625	0.125	0.125	0.25		0.25	0.5	0.5	1	1	2	2	3	4	6	12	12	16	18
No. of Rings	2	2	4	3		4	3	4	3	4	3	4	4	4	4	3	4	4	4

64

Range scales (km)

Range	0.25	0.5	0.75	1	1.5	2	3	4	6	8	12	16	24	36	48	64	72
Ring Interval	0.125	0.25	0.25	0.25	0.5	0.5	1	1	2	2	3	4	6	12	12	16	18
No. of Rings	2	2	3	4	3	4	3	4	3	4	4	4	4	3	4	4	4

Note 1: Maximum range depends on the network radar as shown below. Range scale can be selected from the menu.

2.8 Pulselength

The pulselength in use is displayed at the upper left corner of the display. Appropriate pulselengths are preset to individual range scales. Therefore, you are not usually required to select them. If you are not satisfied with the current pulselength setting, however, it is possible to change it for the ranges shown below. Generally, select a longer pulse for longer detection range and shorter pulse for better range discrimination.

1.5 nm, 1.5 sm, 3 km: Short pulse, medium pulse 3 nm, 3 sm, 6 km: Medium pulse, long pulse

1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.
2. Press the A: SIGNAL PROC. soft key.

Signal process soft keys

2. RADAR OPERATION

2.9 Presentation Mode

This unit provides four radar presentation modes: head-up, course-up, north-up and true motion.

Heading data is required for modes other than head-up.

2.9.1 Selecting a presentation mode

1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.
2. Press the B:RADAR DISPLAY soft key to show the RADAR DISPLAY soft keys.

Radar display soft keys

1. Press the A:MODE soft key. Each pressing of the key changes the presentation mode and the presentation mode indication in the sequence of

2.9.2 Description of presentation modes

Head-up

A display without azimuth stabilization in which the line connecting the center with the top of the display indicates own ship's heading. Targets are painted at their measured distances and in their directions relative to own ship's heading.

The short line on the bearing scale is the north marker.

Head-up presentation mode

Course-up

The radar picture is stabilized and displayed with the currently selected course at the top of the screen. As you change heading, the ship's heading line moves. If you select a new course, the picture resets to display the new course at the top of the display.

Tarnate are pointed at their measured distances and in their directions relative to

2. RADAR OPERATION

North-up

In the north-up mode, targets are painted at their measured distances and in their true (compass) directions from own ship. North is maintained at the top of the screen. The heading line changes its direction according to ship's heading.

North-up presentation mode

True motion

Fixed radar targets maintain a constant position on the screen, while your own ship moves across the radar image at the correct speed and heading. A map-like image is displayed, with all moving vessels traveling in true perspective to each other and to fixed landmasses. As your ship's position approaches the edge of the screen, the radar display is automatically reset to reveal the area ahead of your ship. You can manually reset your ship's position at any time by pressing the B:RADAR DISPLAY soft key followed by the B:SHIFT soft key.

2.10 Measuring the Range

You can measure the range to a radar target three ways: by the range rings, by the cursor, and by the VRM (Variable Range Marker).

Measuring range by range rings

Count the number of rings between the center of the display and the target. Check the range ring interval and judge the distance of the echo from the inner edge of the nearest ring.

To turn the range rings on, do the following:

1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.
2. Press the B:RADAR DISPLAY soft key.

Radar display soft keys

2. RADAR OPERATION

Measuring range by cursor

Operate the trackball to place the cursor intersection on the inside edge of the radar target. The range to the target, as well as the bearing, appears to the right of "+" at the bottom of the display.

How to measure range to a target with the cursor

Measuring range by VRM

2. RADAR OPERATION

1. Rotate the [ENTER] knob to place the VRM on the inside edge of a radar target. Read the VRM indication to find range to the target. You may also adjust the VRM, within the range ring interval, by pressing the VRM soft key.

How to measure range with the VRM

1. You may hide the EBL/VRM soft keys by pressing the [EBL/VRM] key.

Erasing a VRM, VRM indication

Press appropriate VRM soft key (B or E key), then press the [CLEAR] key. The VRM is erased and its indication becomes blank.

Erasing VRM data boxes

Dress the VDM /D or E key soft key associated with the VDM data box you wish

2.11 Measuring the Bearing

There are two ways to measure the bearing to a target: by the cursor, and by the EBL (Electronic bearing Line).

Measuring bearing by cursor

Use the trackball to place the cursor at the center of the target. The bearing to the target appears in the range and bearing box at the bottom right-hand corner on the screen.

Measuring bearing by EBL

1. Press the [EBL/VRM] key.
2. Press the A:EBL1 ON (dotted line EBL) or D:EBL2 ON (dashed line EBL) soft key to select the desired EBL. The selected EBL's indication, at the bottom of the screen, is highlighted.
3. Rotate the [ENTER] knob to bisect the radar target with the EBL. Read the EBL indication to find the bearing to the target.
   You may also adjust the EBL, in intervals of 90^ , by pressing the EBL soft key.

Erasing EBL data boxes

Press the EBL (A or D key) soft key associated with the EBL data box you wish to erase. Press the [CLEAR] key once or twice to erase the data box.

Hiding EBL data boxes

Press the E:ZOOM & D. BOX and D:D. BOX ON/OFF soft keys to show or hide the EBL data boxes.

Moving EBL data boxes

When an EBL data box is obscuring a target you want to see, you can move it to another location as shown below. This cannot be done when the EBL/VRM soft keys are shown.

1. Press the [EBL/VRM] key to turn off the EBL/VRM soft keys.
2. Using the trackball, place the cursor inside the data box you wish to move. As the cursor enters the box it changes to a "hand." Push the [ENTER] knob, and the hand changes to a fist, meaning the box is correctly selected.
3. Use the trackball to move the data box to the location desired, then push the [ENTER] knob.

2. RADAR OPERATION

2.12 Erasing the Heading Line, North Marker

The heading line indicates the ship's heading in all presentation modes. It is a line from the own ship position to the outer edge of the radar display area and appears at zero degrees on the bearing scale in head-up mode; it changes its orientation in the north-up, course-up and true motion modes with ship's movement.

The north marker appears as a short dashed line. In the head-up and course-up modes the north marker moves around the bearing scale as the ship's heading moves.

To temporarily erase the heading line and north marker, press the B:RADAR DISPLAY soft key followed by the D: HL OFF soft key. Release the key to redisplay the markers. (If the radar soft keys are not shown, hit the [HIDE/SHOW] key to display them.)

2.13 Reducing Noise Interference

Noise, appearing on the displays as random "speckles," can be reduced as follows:

1. Press the [MENU] key to open the menu.
2. Press the A:RADAR DISPLAY SETUP soft key.
3. Select NOISE REJECTION, then press the A:EDIT soft key.
4. Select OFF, LOW or HIGH as appropriate.
5. Press the C:ENTER soft key.
6. Press the [MENU] key to close the menu.

2.14 Rejecting Radar Interference

Radar interference may occur when near another shipborne radar that is operating in the same frequency band as your radar. Its on-screen appearance looks like many bright dots either scattered at random or in the form of dotted lines extending from the center to the edge of the display. Interference effects are distinguishable from normal echoes because they do not appear in the same place on successive rotations of the scanner.

Be sure to turn off the interference rejector when no interference exists – weak targets may be missed.

Circular diagram with radial dashed lines and a central star-like point (no text or symbols)

Radar interference

1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.
2. Press the A: SIGNAL PROC. soft key.

2. RADAR OPERATION

2.15 Zoom

The zoom feature allows you to double the size of the area selected with the "zoom circle." It is available on any range but is inoperative in true motion and when the display is shifted.

2.15.1 Zooming in on radar targets

1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.
2. Use the trackball to set the cursor where you want to zoom.
3. Press the E:ZOOM & D. BOX soft key to show ZOOM and D. BOX soft keys.
4. Press the A:ZOOM ON/OFF soft key to select ON. A solid circle, called the "zoom circle," appears on the display.
5. To release the cursor, press the B:CURSOR FLOAT soft key. (The solid circle changes to a dashed one.) To relocate the zoom circle, select location with the trackball, then press the B:CURSOR LOCK key.
6. To quit the zoom function, press the A:ZOOM ON/OFF soft key to select OFF.

1. Press the C:ARP TGT ZM soft key.

Target no. selection window

1. Use the [ENTER] knob to select number (1-10), then push the [ENTER] knob. If the target number does not exist several beeps sound and the zoom function is cancelled.

To cancel, press the B:CURSOR LOCK soft key.

Note: The zoom window blends in with the background when the background color for the radar picture is white. If the window is difficult to see, change the background color.

2.16 Shifting the Picture

Own ship position, or sweep origin, can be displaced manually or automatically to expand the view field without switching to a larger scale.

2.16.1 Manual shift

The sweep origin can be shifted in any presentation mode to a point specified by the cursor by up to 50% of the range in use in any direction.

1. Locate the cursor anywhere within the effective radius of the display.
   2 If not displayed press the [HIDE/SHOW] key to show the radar soft keys

2. RADAR OPERATION

2.16.2 Automatic shift

The amount of automatic shift is calculated according to ship's speed, and the amount of shift is limited to 50% of the range in use. For example, if you set the shift speed setting for 15 knots and the ship is running at 10 knots, the amount of shift will be about 34%. The formula for determining shift amount is as shown below.

's speedShift speed setting × 0.5 = Amount of shift(%)

Automatic shift mode is only available in the head-up mode.

Setting automatic shift maximum speed

1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.
2. Press the B:RADAR DISPLAY soft key.
3. Press the B:SHIFT soft key to show the shift soft keys.
4. Press the C:AUTO S.SPD soft key to display the auto ship speed setting window.

Auto ship speed setting window

1. Adjust the trackball or [ENTER] knob to set the maximum speed of your vessel, and then push the [ENTER] knob or the C:ENTER soft key to set. The setting range is 1-999 kt and the default setting is 15 kt.

Automatic shift

2.17 Using the Offset EBL

The offset EBL can be used to predict a potential collision course. It can also be used to measure the range and bearing between two targets.

2.17.1 Predicting collision course

The procedure below may be used to check if a radar target is on a potential collision course with your vessel.

1. Press the [EBL/VRM] key to show the EBL/VRM soft keys.
2. Press the A:EBL1 ON soft key to turn on the EBL1.
3. Press the C:OFFSET soft key. The origin of EBL1 moves to the cursor position, which is marked with an "X."
4. Use the trackball to place the cursor on the radar target which looks like it might be on a collision course with own ship.
5. Push the [ENTER] knob to fix the origin position.
6. After waiting for a few minutes (at least three minutes), rotate the [ENTER] knob so the EBL bisects the target at the new position. If the target tracks along the EBL towards the center of the display (your ship's position), the target may be on a collision course with your vessel.
7. To cancel the offset EBL, press the C:OFFSET soft key.

2. RADAR OPERATION

2.17.2 Measuring range & bearing between two targets

The procedure which follows shows how to measure the range and bearing between two targets, using the targets "A" and "B" in the figure below as an example.

1. Operate the trackball to place the cursor on the target "A."
2. Press the [EBL/VRM] key to show the EBL/VRM soft keys.
3. Press the A:EBL1 ON soft key to turn on the EBL1.
4. Press the C:OFFSET soft key. The origin of EBL1 moves to the cursor position, which is marked with an "X."
5. Rotate the [ENTER] knob so the EBL bisects the target "B."
6. Push the [ENTER] knob, then press the B:VRM1 ON soft key.
7. Rotate the [ENTER] knob to place the VRM1 on the inner edge of the target "B."
8. Look at the indications for VRM1 and EBL1 to find the range and bearing between the two targets.
9. To cancel the offset EBL, press the C:OFFSET key.

2.18 Echo Trails

Echo trails are simulated afterglow of target echoes that represent their movements relative or true to own ship. This function is useful for alerting you past possible collision situations.

Sample echo trails

2.18.1 Trail time

1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.
2. Press the D:TARGET soft key.
3. Press the A:TRAIL soft key.

2. RADAR OPERATION

2.18.2 Starting echo trails

1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.
2. Press the D:TARGET soft key.
3. Press the A:TRAIL soft key.
4. Press the A:TRAIL ON/OFF soft key to select ON.
5. Press the E:RETURN soft key twice to finish.

"TRAIL," the echo trail time selected and elapsed time appear at the top right-hand corner of the display. Then, afterglow starts extending from all targets. Trails are restarted when the range or mode is changed and zoom or shift is turned on.

For continuous trails, the maximum continuous trail time is 99 minutes and 59 seconds. When the elapsed time clock counts up to that time, the elapsed time display resets to zero and trails begin again.

To turn off echo trail, press the A:TRAIL ON/OFF soft key to select OFF at step 4 in the above procedure.

2.18.3 Trail gradation

The echo trails can be shown in single or multiple gradations. Multiple gradation paints the trails thinner with time, like the afterglow on an analog PPI radar.

1. If not displayed, press the [HIDE/SHOW] soft key to show the radar soft keys.
2. Press the D:TARGET and A:TRAIL soft keys.
3. Press the C:GRAD soft key to select SINGLE (monotone) or MULTI (multitone) as appropriate.
4. Prace the E·RETURN soft key twice to finish

2.18.4 Trail color

Trails may be shown in blue, yellow, green or white.

1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.
2. Press the D:TARGET, A:TRAIL and D:TRAIL COLOR soft keys in that order.

Trail color window

1. Use the trackball to select the color desired, then press the C:ENTER soft key.
2. Press the E:RETURN soft key twice.

2.18.5 Echo trail mode

Echo trails can be shown in Relative or True motion. (True trails require heading and speed inputs.)

1. Press the [MENU] key.
2. Press the A:RADAR DISPLAY SETUP key.
3. Choose TRAIL MODE, then press the A:EDIT soft key.

2. RADAR OPERATION

2.19 Echo Stretch

Normally, the reflected echoes from long range targets appear on the display as weaker and smaller blips even though they are compensated by the radar's internal circuitry. The echo stretch function magnifies these small blips in all ranges. Two types of echo stretch are available: ES LOW which stretches echoes in bearing direction and ES HIGH which stretches them in both range and bearing directions.

Types of echo stretch

This function magnifies not only targets but also sea clutter and radar interference. For this reason, be sure sea clutter and radar interference are properly suppressed before activating the echo stretch.

1. If not displayed, press the [HIDE/SHOW] key to show the radar soft keys.
2. Press the A: SIGNAL PROC. soft key.
3. Press the B:E. STR soft key to select HIGH, LOW or OFF as appropriate.
4. Press the E:RETURN soft key to finish.

2.20 Echo Averaging

The echo average feature, which requires a Model 1800-BB/1900-BB series network radar, effectively suppresses sea clutter. Echoes received from stable targets such as ships appear on the screen at almost the same position during every rotation of the antenna. On the other hand, unstable echoes such as sea clutter appear at random positions.

To distinguish real target echoes from sea clutter, echo average performs scan-to-scan correlation. Correlation is made by storing and averaging echo signals over successive picture frames. If an echo is solid and stable, it is presented in its normal intensity. Sea clutter is averaged over successive scans resulting in the reduced brilliance, making it easier to discriminate real targets from sea clutter.

To properly use the echo average function, it is recommended to first suppress sea clutter with the A/C SEA control and then do the following:

1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.
2. Press the A: SIGNAL PROC. soft key.
3. Press the B:E. AVG soft key to select desired echo averaging.

OFF: No averaging

LOW: Helps distinguish targets from sea clutter and suppresses brilliance of unstable echoes.

MED: Distinguishes small stationary targets such as navigation buoys.

HIGH: Stably displays distant targets.

1. Press the E:RETURN soft key to finish.

2. RADAR OPERATION

2.21 Outputting TLL Data

Target position data can be output to units of the network and shown on their plotter screen with the TTL mark Ⓗ). This function requires position and heading data.

1. Operate the trackball to place the cursor on the target whose position you wish to output.
2. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.
3. Press the D:TARGET soft key.

• Requires ARP circuit board in Model 1800/1900-BB series NavNet radar. Not shown otherwise.

TARGET soft keys

1. Press the B:TLL OUTPUT soft key to output target position data. The TLL mark appears on the plotter screen at the target's position the moment the B:TLL OUTPUT soft key was pressed. Further, that position is recorded as a waypoint on all NavNet units, under the youngest empty waypoint number on

2.22 Guard Alarm

The guard alarm allows the operator to set the desired range and bearing for a guard zone. When ships, islands, landmasses, etc. violate the guard zone, an audio alarm sounds and the offending target blinks to call the operator's attention.

CAUTION

• The alarm should not be relied upon as the sole means for detecting possible collision situations.
• A/C SEA, A/C RAIN and GAIN controls should be properly adjusted to be sure the alarm system does not overlook target echoes.

2.22.1 Setting a guard alarm zone

To set a guard alarm zone, set the radar to transmit and do the following:

1. Press the [ALARM] key.
2. Use the trackball to set the cursor on the top left corner (or top right corner) of the guard zone you want to set, then press the A:SET GUARD1 or C:SET GUARD2 soft key, depending on which guard zone you want to set.
3. Use the trackball to set the cursor on the bottom right corner (or top left corner) of the guard zone area, then push the [ENTER] knob.
4. Press the E:RETURN soft key to finish.

2. RADAR OPERATION

The equipment then searches for targets inside the guard zone to determine guard alarm type. If a target is found inside the guard zone, the guard zone type becomes an "Outward guard alarm," and any target exiting the guard zone will trigger the audio alarm. If no target is found, the guard zone type becomes an "Inward guard alarm," and any targets entering the guard zone will trigger the audio alarm. The guard alarm type is shown as G1(G2) IN or G1(G2) OUT.

Note 1: When the radar range is less than the guard zone range, G1 (G2) IN or G1 (G2) OUT is changed to G1 (G2) ***.

Note 2: If the network radar is set to standby while the guard alarm is active, the guard alarm is cancelled. The guard alarm is redisplayed when the radar is set to transmit again.

2.22.2 When the alarm is violated...

Any radar target violating the guard zone will flash, the audio alarm sounds, and the alarm icon appears in red. Additionally the message "TARGET ENTERED INTO GUARD1(GUARD2)" or "TARGET LEFT FROM GUARD1(GUARD2)" is displayed at the bottom of the screen. Press the [CLEAR] key to silence the alarm.

2.22.3 Canceling the guard alarm

1. Press the [ALARM] key to show the ALARM menu.
2. Press the B:ERASE GUARD1 or D:ERASE GUARD2 soft key as appropriate.
3. Press the E:RETURN soft key to finish.

2.23 Watchman

2.23.1 How watchman works

The watchman function periodically transmits radar pulses for one minute to check for targets in a guard zone. If a target is found in the zone, watchman is cancelled, the audio alarm sounds and the radar continues transmitting. If no target is found the radar goes into standby for the number of minutes specified on the RADAR DISPLAY SETUP menu. This feature is useful when you do not need the radar's function continuously but want to be alerted to radar targets in a specific area. "WTCH" appears at the top left corner when Watchman is active.

How watchman works

2.23.2 Turning on/off watchman

1. Set a guard zone. (See the paragraph 2.22.)
2. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.
3. Press the C:NAV FUNC soft key.
4. Press the A:W. MAN ON/OFF soft key to select ON or OFF as appropriate.
5. Press the E:RETURN soft key to finish.

Note: When the watchman is activated and no guard zone is active, the message "PI FASF SET GUARD ZONE. PUSH ANY KEY TO

2. RADAR OPERATION

2.24 Suppressing Second-trace Echoes

In certain situations, echoes from very distance targets may appear as false echoes (second-trace echoes) on the screen. This occurs when the return echo is received one transmission cycle later, or after a next radar pulse has been transmitted.

Second-trace echoes

To activate or deactivate the second-trace echo rejector do the following:

1. Press the [MENU] key.
2. Press the A:RADAR DISPLAY SETUP soft key.
3. Use the trackball to select 2ND ECHO REJECTION, then press the A:EDIT soft key.
4. Choose ON or OFF as appropriate, then press the C:ENTER soft key.
5. Press the [MENU] key to close the menu.

2.25 Waypoint Marker

A waypoint marker, showing the location of the destination waypoint set on the plotter, may be inscribed on the radar display.

Waypoint marker

1. If not already shown, press the [HIDE/SHOW] key to display the radar soft keys.
2. Press the C:NAV FUNC soft key.
3. Press the B:WPT MK ON/OFF soft key to select ON or OFF as appropriate.
4. Press the E:RETURN soft key to finish.

2.26 ARP, TTM Operation

When the radar source is an ARP-equipped Model 1800/1900 series network radar, you can manually and automatically acquire and track ten targets. Once a target is acquired automatically or manually it is automatically tracked within 0.1 to 32 nm. If the FURUNO heading sensor PG-1000 is used, the data sentence "RMC" is necessary.

Alternatively, you can display the tracks of other ships by receiving the data sentence TTM (Tracked Target Message) via the NETWORK or NMEA port on the processor unit. However, targets cannot be acquired.

Note: When using your unit as a remote display, you cannot change the range of the main radar at the remote display. In this case, to acquire a target, set the range individually.

Usage precautions for ARP

WARNING

No one navigational aid should be relied upon for the safety of vessel and crew. The navigator has the responsibility to check all aids available to confirm position. Electronic aids are not a substitute for basic navigational principles and common sense.

- This auto plotter automatically tracks an automatically or manually acquired radar

CAUTION

The plotting accuracy and response of this auto plotter meets IMO standards. Tracking accuracy is affected by the following:

- Tracking accuracy is affected by course change. One to two minutes is required to restore vectors to full accuracy after an abrupt course change. (The actual amount depends on gyrocompass

2.26.1 Activating/deactivating ARP, TTM

1. Press the [MENU] key followed by the C:ARP SETUP soft key to show the ARP SETUP menu.

ARP setup menu

1. Select ARP TARGET INFO, then press the A:EDIT soft key to show the ARP target info window.

ARP target info window

1. Select INTERNAL ARP, EXTERNAL ARP or OFF as appropriate. INTERNAL ARP: The radar source must be an ARP-equipped Model

2. RADAR OPERATION

2.26.2 Acquiring and tracking targets (ARP)

Ten targets may be acquired and tracked manually and automatically. When you attempt to acquire an 11th target, the message "ARP FULL – ALREADY TRACKING 10 TARGETS!" appears for five seconds. To acquire another target, terminate tracking of an unnecessary target as shown in the paragraph "2.26.4 Terminating tracking of ARP targets."

Manual acquisition

1. If not already shown, press the [HIDE/SHOW] key to show the radar soft keys.
2. Press the D:TARGET soft key.
3. Place the cursor on the target to acquire.
4. Press the C:ACQ soft key.
5. Press the E:RETURN soft key to finish.

The plot symbol changes over time as below. A vector appears about one minute after acquisition, indicating the target's motion trend.

graph LR
    A["At acquisition 1 min. after acquisition"] --> B["Vector"]
    B --> C["3 min. after acquisition"]
    C --> D["Target Number"]

^* = Target number shown when TARGET ID NUMBER is turned on in the ARP SETUP menu.

ARP plot symbols

Automatic acquisition

2. RADAR OPERATION

1. Press the [MENU] key to close the menu. An acquisition area of 2.0 to 2.5 miles in range and ±45^ on either side of the heading line in bearing appears.

Note: Targets being tracked in automatic acquisition are continuously tracked when switching to manual acquisition.

Automatic acquisition area

2.26.3 Displaying target number (ARP, TTM)

Target number can be shown for ARP and TTM targets as below.

2. RADAR OPERATION

2.26.4 Terminating tracking of ARP targets

When ten targets have been acquired, no more acquisition occurs unless targets are cancelled. If you need to acquire additional targets, you must first cancel one or more individual targets, or all targets, using one of the procedures below.

Terminating tracking of selected targets

1. Place the cursor on the target to terminate tracking.
2. Press the [CLEAR] key to terminate tracking and erase the target.

Terminating tracking of all targets

1. Press the [MENU] key followed by the C:ARP SETUP soft key.
2. Select CANCEL ALL TARGETS.
3. Press the A:EDIT soft key.

Cancel all targets window

1. Select YES.
2. Press the C:ENTER soft key.
3. Press the E:RETURN soft key followed by the [MENU] key to close the menu.

2.26.5 Setting vector attributes (ARP)

What is a vector?

A vector is a line extending from a tracked target which shows estimated speed and course of the target. The vector tip shows an estimated position of the target after the selected vector time elapses. It can be useful to extend the vector length (time) in order to evaluate the risk of collision with any target.

Vector reference, vector time

You may reference the vectors to North (True, requires heading and speed data) or ship's heading (relative) as desired. Vector time can be set to 30 seconds, 1,

3, 6, 15 or 30 minutes.

1. Press the [MENU] key followed by the C:ARP SETUP soft key to show the ARP SETUP menu.
2. Operate the trackball to select ARP VECTOR MODE.
3. Press the A:EDIT soft key to show the ARP vector mode window.

2. RADAR OPERATION

2.26.6 Displaying past position (ARP)

This ARP can display time-spaced dots (maximum ten dots) marking the past positions of any targets being tracked. You can evaluate a target's actions by the spacing between dots. Below are examples of dot spacing and target movement.

(a) Ship turning

(b) Ship running straight

(c) Ship reduced speed

To turn the past position display on or off:

1. Press the [MENU] key followed by the C:ARP SETUP soft key.
2. Operate the trackball to select HISTORY INTERVAL.
3. Press the A:EDIT soft key to show the history interval window.

History interval window

1. Operate the trackball to select history interval among 30 sec, 1 min, 3 min

2.26.7 ARP, TTM target data

You can show motion trends (range, bearing, course, speed, CPA and TCPA) for ARP or TTM targets. Note that TARGET ID NUMBER, in the ARP SETUP menu, must be turned on to display this data.

1. Place the cursor on the target whose data you want to see.
2. If not already displayed, press the [HIDE/SHOW] key to show the radar soft keys.
3. Press the D:TARGET and D:TARGET INFO soft keys. The data of the selected target appears at the bottom left-hand corner of the display. (If an EBL/VRM data box is displayed the ARP (TTM) data box will be under it.)
4. Press the E:RETURN soft key to finish.
5. To erase ARP/TTM target data, select the corresponding target with the cursor, then press the [CLEAR] key.

2. RADAR OPERATION

2.26.8 CPA/TCPA alarm (ARP)

When the predicted CPA of any target becomes smaller than a preset CPA alarm range or its predicted TCPA less than a preset TCPA alarm limit, an audio alarm sounds and the speaker icon appears (in red). In addition, the target plot symbol of the offending target changes to a triangle and flashes together with its vector. You may silence the audio alarm with the [CLEAR] key. Press the [ALARM] key and the message "COLLISION ALARM" appears. Press the C:CLEAR ALARM soft key to acknowledge the alarm. The flashing of the triangle plot symbol continues until you intentionally terminate tracking of the target. The ARP continuously monitors the predicted range at the Closest Point of Approach (CPA) and predicted time to CPA (TCPA) of each track to own ship.

This feature helps alert you to targets which may be on a collision course with own ship. However, it is important that gain, A/C SEA, A/C RAIN and other radar controls are properly adjusted and the ARP is set up so that it can track targets effectively.

CPA/TCPA alarm ranges must be set up properly taking into consideration the size, tonnage, speed, turning performance and other characteristics of own ship.

CAUTION

The CPA/TCPA alarm should never be relied upon as the sole means for detecting the risk of collisions. The navigator is not relieved of the responsibility to keep visual lookout for avoiding collisions, whether or not the radar or other plotting aid is in use.

1. RADAR OPERATION

TCPA window

1. Select a TCPA limit from 30 sec, 1 min, 2 min, 3 min, 4 min, 5 min, 6 min and 12 min.
2. Press the C:ENTER soft key.
3. Press the [MENU] key to close the menu.

2.26.9 Lost target alarm (ARP)

When the system detects a lost target, the target symbol becomes a diamond and tracking is discontinued after one minute.

Lost target mark

Canceling a lost target

1. Place the cursor on the target.
2. Press the [CLEAR] key.

2.27 Interpreting the Radar Display

2.27.1 General

Minimum and maximum ranges

Minimum range

The minimum range is defined by the shortest distance at which, using a scale of 1.5 or 0.75 nm, a target having an echoing area of 10 m^2 is still shown separate from the point representing the antenna position. It is mainly dependent on the pulselength, antenna height, and signal processing such as main bang suppression and digital quantization. It is best to use the shortest possible range as long as the clarity and definition of the picture remain good.

Maximum range

The maximum detecting range of the radar, Rmax, varies considerably depending on several factors such as the height of the antenna above the waterline, the height of the target above the sea, the size, shape and material of the target, and atmospheric conditions.

Under normal atmospheric conditions, the maximum range is equal to the radar horizon or a little shorter. The radar horizon is longer than the optical one by about 6% because of the diffraction property of the radar signal. Rmax is given in the following equation.

$$ R _ {\max} = 2. 2 \times (\sqrt {h 1} + \sqrt {h 2}) $$

where Rmax: radar horizon (nautical miles)

h1: antenna height (m)

h2: target height (m)

2. RADAR OPERATION

Radar resolution

There are two important factors in radar resolution (discrimination): bearing resolution and range resolution.

Bearing resolution

Bearing resolution is the ability of the radar to display the echoes received from two targets, which are at the same range and close together, as separate targets. Bearing resolution is directly proportional to the antenna length, and inversely proportional to the radar's wavelength.

Range resolution

Range resolution is the ability to display the echoes received from two targets, which are on the same bearing and close to each other, as separate targets.

Bearing accuracy

One of the most important features of the radar is how accurately the bearing of a target can be measured. The accuracy of bearing measurement basically depends on the narrowness of the radar beam. However, the bearing is usually taken relative to the ship's heading, and thus, proper adjustment of the heading marker at installation is an important factor in ensuring bearing accuracy. To minimize error when measuring the bearing of a target, select a range which will put the target as far out to the edge of the radar screen as possible.

Range measurement

Measurement of the range to a target is also a very important function of the radar. There are three means of measuring range: the fixed range rings, the

1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 99.

2. RADAR OPERATION

2.27.2 False echoes

Occasionally echo signals appear on the screen at positions where there is no target or disappear even if there are targets. False target situations may be recognized, however, if you understand why they are displayed. Typical false echoes are shown below.

Multiple echoes

Multiple echoes occur when a transmitted pulse returns from a solid object like a large ship, bridge, or breakwater. A second, a third or more echoes may be observed on the display at double, triple or other multiples of the actual range of the target as shown below. Multiple reflection echoes can be reduced and often removed by decreasing the gain (sensitivity) or properly adjusting the [A/C SEA] control.

graph TD
    A["Own ship"] --> B["Target"]
    B --> C["True echo"]
    B --> D["Multiple echo"]

Multiple echoes

Sidelobe echoes

Every time the radar pulse is transmitted, some radiation escapes on each side of the beam. This stray RE is called a "sidelohe." If a target exists where it can

1. RADAR OPERATION

Virtual image

A relatively large target close to your ship may show at two positions on the screen. One of them is the true echo directly reflected by the target and the other is a false echo which is caused by the mirror effect of a large object on or close to your ship as shown in the figure below. If your ship comes close to a large metal bridge, for example, such a false echo may temporarily be seen on the screen.

Virtual image

Shadow sectors

Funnels, stacks, masts, or derricks in the path of the antenna block the radar beam. If the angle subtended at the antenna is more than a few degrees, a non-detecting sector or blind spot may be produced. Within this sector, targets

2. RADAR OPERATION

2.27.3 SART (Search and Rescue Transponder)

A Search and Rescue Transponder (SART) may be triggered by any X-Band (3 cm) radar within a range of approximately 8 nm. Each radar pulse received causes it to transmit a response which is swept repetitively across the complete radar frequency band. When interrogated, it first sweeps rapidly (0.4 ×s) through the band before beginning a relatively slow sweep (7.5 ×s) through the band back to the starting frequency. This process is repeated for a total of twelve complete cycles. At some point in each sweep, the SART frequency will match that of the interrogating radar and be within the pass band of the radar receiver. If the SART is within range, the frequency match during each of the 12 slow sweeps will produce a response on the radar display, thus a line of 12 dots equally spaced by about 0.64 nautical miles will be shown.

When the range to the SART is reduced to about 1 nm, the radar display may show also the 12 responses generated during the fast sweeps. These additional dot responses, which also are equally spaced by 0.64 nm, will be interspersed with the original line of 12 dots. They will appear slightly weaker and smaller than the original dots.

General procedure for detecting SART response

1. Use the range scale of 6 or 12 nm as the spacing between the SART responses is about 0.6 nm (1125 m) to distinguish the SART.
2. Turn off the automatic clutter suppression (if applicable).
3. Turn off the Interference Rejector.

General remarks on receiving SART

SART range errors

When responses from only the 12 low frequency sweeps are visible (when the SART is at a range greater than about 1nm ), the position at which the first dot is displayed may be as much as 0.64nm beyond the true position of the SART. When the range closes so that the fast sweep responses are seen also, the first of these will be no more than 150 meters beyond the true position.

Radar bandwidth

This is normally matched to the radar pulselength and is usually switched with the range scale and the associated pulselength. Narrow bandwidths of 3-5 MHz are used with long pulses on long range and wide bandwidths of 10-25 MHz with short pulses on short ranges.

Any radar bandwidth of less than 5 MHz will attenuate the SART signal slightly, so it is preferable to use a medium bandwidth to ensure optimum detection of the SART.

Radar sidelobes

As the SART is approached, sidelobes from the radar antenna may show the

2. RADAR OPERATION

A/C SEA control

For optimum range SART detection, this control should be set to the minimum. Care should be exercised as wanted target in sea clutter may be obscured. Note also that in clutter conditions the first few dots of the SART response may not be detectable, irrespective of the setting of the anti-clutter sea control. In this case, the position of the SART may be estimated by measuring 9.5 nm from the furthest dot back towards own ship.

Some sets have automatic/manual anti-clutter sea control facilities in which case the operator should switch to manual.

A/C RAIN control

This should be used normally (to break up areas of rain) when trying to detect a SART response which, being a series of dots, is not affected by the action of the anti-clutter rain circuitry. Note that racon responses, which are often in the form of a long flash, will be affected by the use of this control.

Some sets have automatic/manual anti-clutter rain control facilities in which case the operator should switch to manual.

Note: This SART information is excerpted from IMO SN/Circ 197 Operation of Marine Radar for SART Detection.

2.27.4 Racon (Radar Beacon)

A racon is a radar transponder which emits a characteristic signal when triggered by a ship's radar (usually only the 3 centimeter band). The signal may be emitted on the same frequency as that of the triggering radar, in which case it is

You may show the plotter display over the entire screen, in the overlay screen with the radar display, or in a combination screen.

3.1.1 Full-screen plotter display

The data shown in the nav data window depends on the status of the C: NAV soft key and the cursor.

The compass display, shown in combination displays, provides steering information. The compass rose shows two triangles: the red triangle shows own ship's course and the black triangle, which moves with ship's course, shows the bearing to destination waypoint.

The water temperature and depth graphs, which require appropriate sensors, show the latest 10 minutes of water temperature and depth data. The range of the depth graph is 50 feet and it is automatically adjusted with depth.

Reading the XTE (cross-track error) monitor

The XTE monitor, located below the compass rose, shows the distance you are off course and the direction to steer to return to course. The own ship marker moves according to direction and distance off course. It is shown in black when the amount of cross-track error is within the XTE monitor range and yellow when it is over. An arrow appears at the right or left side of the XTE monitor and it shows the direction to steer to return to intended course. It is shown in red when you should steer left, and green when you should steer right. In the example on the previous page you would steer right to return to course. To maintain course, steer the vessel so the own ship marker stays at the center of the XTE monitor.

Soft keys

You can show the soft keys for the compass display by pressing the [HIDE/SHOW] key.

E:COMPSS CNTRL: On the radar/plotter/compass combination display you can switch control to the compass display by pressing the E:CNTRL soft key to select COMPSS.

EDIT XT-LMT*: Sets the range for XTE monitor scale. See the procedure below for how to set.

A:RESET XTE: This soft key may be operated to restart navigation, when a destination is set. Press the C:EDIT XT-LMT soft key followed by the A:RESET XTE soft key. The following message is displayed.

RESTART NAVIGATION TO CURRENT WPT. ARE YOU SURE? YES ... PUSH ENTER KNOB NO ... PUSH CLEAR KEY

*: The labeling of this soft key changes with screen combination.

1. PLOTTER OPERATION

3.1.3 Highway display

The highway display, shown in combination displays, provides a graphic presentation of ship's track along intended course. It is useful for monitoring ship's progress toward a waypoint. The own ship marker shows the relation between ship and intended course. The XTE monitor shows the direction and amount your vessel is off course – the arrow shows the direction to steer to return to your course and the numeric the distance you are off course. Using the figure below as an example, you would steer right 0.009 nm to return to course. To maintain course, steer the vessel so the own ship marker stays aligned with the intended course line.

The nav data display provides comprehensive navigation data, and it is shown in a three-screen combination display. The user may select what data to display and where to display it. For details see the paragraph "5.8 Nav Data Display Setup."

Appropriate sensors are required. Bars (--) appear when corresponding sensor is not connected.

1. PLOTTER OPERATION

3.2 Presentation Mode

Three types of presentation modes are provided for the plotter display: north-up, course-up and auto course-up. To change the presentation mode, press the [HIDE/SHOW] key followed by the B:MODE soft key. Each press of the key changes the presentation mode and presentation mode indication (top right-hand corner of the screen) cyclically in the sequence of North-up, Course-up and Auto course-up.

3.2.1 North-up

North (zero degree) is at the top of the display and own ship is shown with a filled circle. This mode is useful for long-range navigation.

Plotter display, north-up mode

The course-up mode is useful for monitoring ship's progress towards a waypoint. The destination is at the top of the screen when a destination is set. When no destination is set, the course or heading is at the top of the screen at the moment the course-up mode is selected. A filled triangle marks own ship's position.

Note: The data sentences GGA and VTG must be output from the NavNet unit connected to the GPS navigator in order to correctly orient the own ship marker in the course-up mode on other NavNet units.

Plotter display, course-up mode, destination set

3.2.3 Auto course-up

The course is at the top of screen at the moment the auto course-up mode is selected. In this mode, the current course is kept at the top of the screen when the change is within 22.5 degrees. For example, if your vessel turns more than 22.5 degrees to port or starboard, the chart display will rotate so that your course

3.3 Shifting the Display

The plotter display can be shifted as below.

1. Use the trackball to locate the cursor at a screen edge. The screen shifts in the direction opposite of cursor location.
2. To turn off the cursor, press the C:CENTER soft key. This also returns the own ship marker to the screen center.

3.4 Chart Scale

Chart scale (range) may be selected with the [RANGE -] or [RANGE +] key. The [-] key expands the chart range; the [+] key shrinks it. The available ranges are as below.

Charts scales

nm	0.125		0.25	0.5	1	2	4	8	16	32	64	128	256	512
km	0.23	0.46	0.93	1.85	3.70	7.41	14.8	29.6	59.3	119	237	474	948	1896
sm	0.144	0.29	0.58	1.15	2.30	4.60	9.21	18.4	36.8	73.7	147	295	589	1178

1024

Note: When the display is expanded or shrunk beyond the range of the chart card in use the message "NO CHART" appears, along with the appropriate chart icon. See the illustration on the next page for details.

1. PLOTTER OPERATION

3.5 Chart Cards

3.5.1 Chart card overview

Your system reads FURUNO and NavCharts™ (NAVIONICS) charts, or C-MAP charts, depending on the type of processor unit you have.

When you insert a suitable chart card in the slot and own ship is near any cartographic object, a chart appears. If a wrong card is inserted or a wrong chart scale is selected, landmasses will appear hollow. Chart icons appear at the top of the display to help you select a suitable chart scale. The table below shows the chart icons and their meanings.

Chart icons and their meanings

Icon Meaning
	Proper card is not inserted or chart scale is too small. Operate the RANGE key to adjust chart scale.
	Chart scale is too large. Operate the RANGE key to adjust chart scale.
	Suitable chart scale is selected.

1. PLOTTER OPERATION

3.5.2 Indices and chart enlargement

When the [RANGE] key is operated, you will see several frames appear on the chart. These frames are called indices and they show you what parts of the chart can be enlarged in the current range.

Outline map of East Asia with a highlighted rectangular region containing small figures (no text or labels)

Sample chart (Japan), showing indices

When a chart cannot be displayed

A chart will not be displayed in the following conditions:

• When the chart scale is too large or too small.
• When scrolling the chart outside the indices.

When this happens, select proper chart scale.

Note: Indices can be turned on or off. For further details see "Chart border line" on page 5-14 for FURUNO and NAVIONICS charts and page 5-16 for C-MAP charts.

1. PLOTTER OPERATION

3.5.3 FURUNO and NavCharts ™ charts

Chart symbols

The table below shows FURUNO and NavCharts™ chart symbols and their meanings.

Chart symbols

Symbol	Description	Symbol	Description
	Summit		Position of Sounding
	Wreck		Obstruction
	Lighthouse		Fishing Reef
	Lighted Buoy		Platform
	Buoy		Anchorage
	Radio Station

Data for aids to navigation

Selected FURUNO and NavCharts™ charts can show buoy and lighthouse data. Simply place the cursor on the lighthouse or buoy mark.

Place the cursor on a lighthouse or buoy mark.

Selected NavCharts show services available at ports, with icons.

1. Use the trackball to place the cursor on the sailboat icon (denotes a port or harbor) desired.
2. Push the [ENTER] knob.
3. Roll the trackball horizontally to select icon desired at the top of the display. The services available appear directly below the icon selected.
4. Press the E:RETURN soft key to finish.

Plotter display, showing port service display

Besides its fundamental functions of providing position data, the cursor can also show information about caution area, depth area, source of data, etc. on C-MAP charts. In addition, you can display information about an icon by placing the cursor on it.

1. Move the trackball to turn the cursor on.
2. Use the trackball to place the cursor on the position desired.
3. Push the [ENTER] knob to open the Objects window.

Objects

Spot Sounding

Depth area

Exclusive economic zone

Military practice area

Restricted area

Source of data

Objects window

1. Use the trackball to select the item desired.
2. Push the [ENTER] knob to display details for object selected.

Depth area

Depth range value10.00 Meters

Depth range value2

You may place the cursor on any icon to find information about the selected icon.

1. For example, place the cursor on a lighthouse icon.

Lighthouse icon

1. Push the [ENTER] knob to show data. For example, the following window appears for a lighthouse.

Navigation mark, fixedLight.

ColorwhiteHeight7.00 MetersLight characteristic occultingXXXXXXXXXXXXXXXXX

Sample lighthouse data

1. If necessary, move the trackball downward or upward to scroll the window.
2. Press the E:CANCEL soft key twice to finish.

Tide information

The C-MAP NT chart card provides for calculation of the tide heights for any date. Additionally it displays the times of sunrise and sunset.

1. Use the trackball to place the cursor on a Tide icon (T).
2. Push the [ENTER] knob to open the Objects window.

1. Press the A:DATE soft key to open the DATE window.

CHANGE DATE

(DAY. MONTH. YEAR)28. 10. 2003

LIMIT:31.12.2099

Date window

1. Use the trackball to position the cursor where desired, then enter day with the alphanumeric keys. Repeat to enter complete date.
2. Push the [ENTER] knob to show the tidal graph for entered date.
3. Use the trackball to locate the vertical cursor on the hour desired.
4. Use the trackball to shift the horizontal cursor to select draught.

5. See the time, height and draught indications in left of the tide graph for tide

6. PLOTTER OPERATION

3.6 Working with Track

Your ship's track is plotted on the screen using navigation data fed from position-fixing equipment. This section shows you what you can do with track, from turning it on or off to changing its plotting interval. In the default setting, own ship's track is turned on and is displayed in red.

3.6.1 Displaying track

Own ship track

1. Press the [MENU] key followed by the A:CHART SETUP and B:TRACKS & MARKS CONTROL soft keys to open the TRACK CONTROL menu.

Track control menu

1. Use the trackball to select OWN SHIP TRACK DISP.
2. Press the A:EDIT soft key to show the track display window.
3. Use the trackball to select ON (default setting) or OFF as appropriate.

Target tracks, which require NMEA format TTM (Tracked Target Message) data sentence, may be turned on or off as desired. The default setting is ON.

1. Press the [MENU] key followed by the A:CHART SETUP and B:TRACKS & MARKS CONTROL soft keys to open the TRACK CONTROL menu.
2. Use the trackball to select TARGET TRACK DISPLAY.
3. Press the A:EDIT soft key to show the target track display window.
4. Use the trackball to select to ON (default setting) or OFF as appropriate.
5. Press the C:ENTER soft key.
6. Press the [MENU] key to close the menu.

3.6.2 Stopping, restarting plotting of own ship track

When your boat is at anchor or returning to port you probably won't need to record its track. You can stop recording the track, to conserve the track memory, as follows:

1. Press the [MENU] key followed by the A:CHART SETUP and B:TRACKS & MARKS CONTROL soft keys to open the TRACK CONTROL menu.

```mermaid
graph LR
    A["OWN SHIP TRACK DISP ON<br>OWN SHIP TRACK COLOR RED<br>TARGET TRACK DISPLAY ON<br>TARGET TRACK COLOR WHITE<br>INTERVAL TIME<br>TIME INTERVAL 00m10nm<br>DISTANCE INTERVAL 00.10nm<br>MEMORY(TRACK & MARK) 2000 POINTS<br>(MARK MEMORY) (6000)POINTS"] --> B["TRACK CONTROL"]
    B --> C["> TRACK CONTROL"]
    C --> D["> OWN SHIP TRACK DISP ON<br>OWN SHIP TRACK COLOR RED<br>TARGET TRACK DISPLAY ON<br>TARGET TRACK COLOR WHITE<br>INTERVAL TIME<br>TIME INTERVAL 00m10nm<br>DISTANCE INTERVAL 00.10nm<br>MEMORY(TRACK & MARK) 2000 POINTS<br>(MARK MEMORY) (6000)POINTS"]
    D --> E["> TRACK CONTROL"]
    E --> F["> OWN SHIP TRACK DISP ON<br>OWN SHIP TRACK COLOR RED<br>TARGET TRACK DISPLAY ON<br>TARGET TRACK COLOR WHITE<br>INTERVAL TIME<br>TIME INTERVAL 00m10nm<br>DISTANCE INTERVAL 00.10nm<br>MEMORY(TRACK & MARK) 2000 POINTS<br>(MARK MEMORY) (6000)POINTS"]
    F --> G["> TRACK CONTROL"]
    G --> H["> OWN SHIP TRACK DISP ON<br>OWN SHIP TRACK COLOR RED<br>TARGET TRACK DISPLAY ON<br>TARGET TRACK COLOR WHITE<br>INTERVAL TIME<br>TIME INTERVAL 00m10nm<br>DISTANCE INTERVAL 00.10nm<br>MEMORY(TRACK & MARK) 2000 POINTS<br>(MARK MEMORY) (6000)POINTS"]
    H --> I["> TRACK CONTROL"]
    I --> J["> OWN SHIP TRACK DISP ON<br>OWN SHIP TRACK COLOR RED<br>TARGET TRACK DISPLAY ON<br>TARGET TRACK COLOR WHITE<br>INTERVAL TIME<br>TIME INTERVAL 00m10nm<br>DISTANCE INTERVAL 00.10nm<br>MEMORY(TRACK & MARK) 2000 POINTS<br>(MARK MEMORY) (6000)POINTS"]
    J --> K["> TRACK CONTROL"]
    K --> L["> OWN SHIP TRACK DISP ON<br>OWN SHIP TRACK COLOR RED<br>TARGET TRACK DISPLAY ON<br>TARGET TRACK COLOR WHITE<br>INTERVAL TIME<br>TIME INTERVAL 00m10nm<br>DISTANCE INTERVAL 00.10nm<br>MEMORY(TRACK & MARK) 2000 POINTS<br>(MARK MEMORY) (6000)POINTS"]
    L --> M["> TRACK CONTROL"]
    M --> N["> OWN SHIP TRACK DISP ON<br>OWN SHIP TRACK COLOR RED<br>TARGET TRACK DISPLAY ON<br>TARGET TRACK COLOR WHITE<br>INTERVAL TIME<br>TIME INTERVAL 00m10nm<br>DISTANCE INTERVAL 00.10nm<br>MEMORY(TRACK & MARK) 2000 POINTS<br>(MARK MEMORY) (6000)POINTS"]
    N --> O["> TRACK CONTROL"]
    O --> P["> OWN SHIP TRACK DISP ON<br>OWN SHIP TRACK COLOR RED<br>TARGET TRACK DISPLAY ON<br>TARGET TRACK COLOR WHITE<br>INTERVAL TIME<br>TIME INTERVAL 00m10nm<br>DISTANCE INTERVAL 00.10nm<br>MEMORY(TRACK & MARK) 2000 POINTS<br>(MARK MEMORY) (6000)POINTS"]
    P --> Q["> TRACK CONTROL"]
    Q --> R["> OWN SHIP TRACK DISP ON<br>OWN SHIP TRACK COLOR RED<br>TARGET TRACK DISPLAY ON<br>TARGET TRACK COLOR WHITE<br>INTERVAL TIME<br>TIME INTERVAL 00m10nm<br>DISTANCE INTERVAL 00.10nm<br>MEMORY(TRACK & MARK) 2000 POINTS<br>(MARK MEMORY) (6000)POINTS"]
    R --> S["> TRACK CONTROL"]
    S --> T["> OWN SHIP TRACK DISP ON<br>OWN SHIP TRACK COLOR RED<br>TARGET TRACK DISPLAY ON<br>TARGET TRACK COLOR WHITE<br>INTERVAL TIME<br>TIME INTERVAL 00m10nm<br>DISTANCE INTERVAL 00.10nm<br>MEMORY(TRACK & MARK) 2000 POINTS<br>(MARK MEMORY) (6000)POINTS"]
    T --> U["> TRACK CONTROL"]
    U --> V["> OWN SHIP TRACK DISP ON<br>OWN SHIP TRACK COLOR RED<br>TARGET TRACK DISPLAY ON<br>TARGET TRACK COLOR WHITE<br>INTERVAL TIME<br>TIME INTERVAL 00m10nm<br>DISTANCE INTERVAL 00.10nm<br>MEMORY(TRACK & MARK) 2000 POINTS<br>(MARK MEMORY) (6000)POINTS"]
    V --> W["> TRACK CONTROL"]
    W --> X["> OWN SHIP TRACK DISP ON<br>OWN SHIP TRACK COLOR RED<br>TARGET TRACK DISPLAY ON<br>TARGET TRACK COLOR WHITE<br>INTERVAL TIME<br>TIME INTERVAL 00m10nm<br>DISTANCE INTERVAL 00.10nm<br>MEMORY(TRACK & MARK) 2000 POINTS<br>(MARK MEMORY) (6000)POINTS"]
    X --> Y["> TRACK CONTROL"]
    Y --> Z["> OWN SHIP TRACK DISP ON<br>OWN SHIP TRACK COLOR RED<br>TARGET TRACK DISPLAY ON<br>TARGET TRACK COLOR WHITE<br>INTERVAL TIME<br>TIME INTERVAL 00m10nm<br>DISTANCE INTERVAL 00.10nm<br>MEMORY(TRACK & MARK) 2000 POINTS<br>(Mark MEMORY) (6000)POINTS"]
    Z --> AA["> TRACK CONTROL"]
    AA --> AB["> OWN SHIP TRACK DISP ON<br>OWN SHIP TRACK COLOR RED<br>TARGET TRACK DISPLAY ON<br>TARGET TRACK COLOR WHITE<br>INTERVAL TIME<br>TIME INTERVAL 00m10nm<br>DISTANCE INTERVAL 00.10nm<br>MEMORY(TRACK & MARK) 2000 POINTS<br>(Mark MEMORY) (6000)POINTS"]
    AB --> AC["> TRACK CONTROL"]
    AC --> AD["> OWN SHIP TRACK DISP ON<br>OWN SHIP TRACK COLOR RED<br>TARGET TRACK DISPLAY ON<br>TARGET TRACK COLOR WHITE<br>INTERVAL TIME<br>TIME INTERVAL 00m10nm<br>DISTANCE INTERVAL 00.10nm<br>MEMORY(TRACK & MARK) 2000 POINTS<br>(Mark MEMORY) (6000)POINTS"]
    AD --> AE["> TRACK CONTROL"]
    AE --> AF["> OWN SHIP TRACK DISP ON<br>OWN SHIP TRACK COLOR RED<br>TARGET TRACK DISPLAY ON<br>TARGET TRACK COLOR WHITE<br>INTERVAL TIME<br>TIME INTERVAL 00m10nm<br>DISTANCE INTERVAL 00.10nm<br>MEMORY(TRACK & MARK) 2000 POINTS<br>(Mark MEMORY) (6000)POINTS"]
    AF --> AG["> TRACK CONTROL"]
    AG --> AH[> OWN SHIP TRACK DISP ON
OWN SHIP TRACK COLOR RED
TARGET TRACK DISPLAY ON
TARGET TRACK COLOR WHITE
INTERVAL TIME
TIME INTERVAL 0Om15nm
DISTANCE INTERVAL 25mm<nl>

3.6.3 Changing track color

Track can be displayed in red (default setting), yellow, green, light-blue, purple, blue and white. It can be useful to change track color on a regular basis to discriminate between previous day's track, etc.

Own ship's track

1. Press the [MENU] key followed by the A:CHART SETUP and B:TRACKS & MARKS CONTROL soft keys to open the TRACK CONTROL menu.
2. Use the trackball to select OWN SHIP TRACK COLOR.
3. Press the A:EDIT soft key to display the track color window.

Own ship track color window

1. Use the trackball to select the color desired.
2. Press the C:ENTER soft key.
3. Press the [MENU] key to close the menu.

Target track

Like own ship's track, target tracks can be displayed in red, yellow, green, light-blue, purple, blue and white (default setting).

3.6.4 Track plotting method and interval for own ship track

In drawing the own ship track, first the ship's position fed from position-fixing equipment is stored into the unit's memory at an interval of time or distance. A shorter interval provides for better reconstruction of the track, but the storage time of the track is reduced. When the track memory becomes full, the oldest track is erased to make room for the latest.

Track plotting method

Track may be plotted by time or distance. The default setting is "time."

1. Press the [MENU] key followed by the A:CHART SETUP and B:TRACKS & MARKS CONTROL soft keys to open the TRACK CONTROL menu.
2. Use the trackball to select INTERVAL.
3. Press the A:EDIT soft key to display the plot window.

Interval window

1. Use the trackball to select TIME or DISTANCE as appropriate. Distance is useful for conserving track memory, since no track is recorded when the boat is stationary.
2. Press the C:ENTER soft key.
3. Press the [MENU] key to close the menu.

Track plotting interval

1. Use the trackball to select digit and enter value with the alphanumeric keys. The D: CLEAR soft key functions to clear an entire line of data.
2. Push the [ENTER] knob or C: ENTER soft key.
3. Press the [MENU] key to close the menu.

3.6.5 Changing own ship track/mark distribution setting

The equipment stores a total of 8000 points of track and marks. This amount may be distributed as desired, and the default setting is 2000 points of track and 6000 points for marks.

When you change the track memory setting, all tracks and marks in the memory are erased. If necessary save the data to a memory card. For further details see the paragraph "6.1.2 Saving data to a memory card."

1. Press the [MENU] key followed by the A:CHART SETUP and B:TRACKS & MARKS CONTROL soft keys to open the TRACK CONTROL menu.
2. Use the trackball to select MEMORY (TRACK & MARK)
3. Press the A:EDIT soft key to display the track memory window.

TRACK MEMORY

2000/8000 POINTS

Track memory window

1. Use the trackball to select digit and use the alphanumeric keys to enter

2. PLOTTER OPERATION

3.6.6 Erasing track

This paragraph shows you how to erase own ship's track and target tracks. You can erase ship's track three ways: collectively, by color and by area.

Erasing own ship track by area

You can erase own ship's track by area as below. This feature is not available when the overlay mode is in use.

1. Press the [MENU] key followed by the A:CHART SETUP, B:TRACKS & MARKS CONTROL and C:ERASE T & M soft keys to show the ERASE menu.

Erase menu

1. Use the trackball to select ERASE TRACKS BY AREA, then press the A:EDIT soft key. The menu is erased and the plotter display appears.
2. Use the trackball to place the cursor at the top left-hand corner of the area

Erasing own ship track by color

You may erase own ship's track by color as follows:

1. Press the [MENU] key followed by the A:CHART SETUP, B:TRACKS & MARKS CONTROL and C:ERASE T & M soft keys to show the ERASE menu.
2. Use the trackball to select ERASE TRACKS BY COLOR, then press the A:EDIT soft key.

Erase track by color window

1. Use the trackball to select the color you want to erase, then push the [ENTER] knob. You are asked if you are sure to delete the specified track.
2. Push the [ENTER] knob to erase the track color selected.
3. Press the [MENU] key twice to close the menu.

Erasing all own ship track

1. Press the [MENU] key followed by the A:CHART SETUP, B:TRACKS & MARKS CONTROL and C:ERASE T & M soft keys to show the ERASE menu.

A. H. A. C. D. E. F. G. H. I. J. K. L. M. N. O. P. Q. R. S. T. U. V. W. X. Y. Z. A. E. F. G. H. I. J. K. L. M. N. O. P. Q. R. S. T. U. V. W. X. Y. Z. A. E. F. G. H. I. J. K. L. M. N. O. P. Q. R. S. T. U. V. W. X. Y. Z. A. E. F. G. I. J. K. L. M. N. O. P. Q. R. S. T. U. V. W. X. Y. Z. A. E. F. G. H. I. J. K. L. M. N. O. P. Q. R. S. T. U. V. W. X. Y. Z. A. E. F. G. I. J. K. L.M

1. PLOTTER OPERATION

3.7 Marks, Lines

Marks are useful for denoting important points such as a good fishing spot. Marks can be inscribed in seven shapes and seven colors: Red, yellow, green, light-blue, purple, blue and white.

3.7.1 Entering a mark, line

1. Place the cursor where you want a mark to appear.
2. Press the [SHOW/HIDE] key (if necessary) followed by the A:MARK ENTRY soft key.

The mark is inscribed in the size, color and shape selected on the MARKS & LINES menu. The default mark attributes are size, large; color, yellow, and shape, hollow circle (○).

3.7.2 Changing mark attributes

You can select the shape, size and color for marks on the MARKS & LINES menu.

1. Press the [MENU] key to show the menu.
2. Press the A:CHART SETUP, B:TRACKS & MARKS CONTROL and D:MARK SETUP soft keys to show the MARKS & LINES menu.

1. Use the trackball to select mark shape desired, then press the C:ENTER soft key.
2. Select MARKS SIZE, then press the A:EDIT soft key.
3. Use the trackball to select LARGE (default setting) or SMALL as appropriate.
4. Press the C:ENTER soft key.
5. Press the [MENU] key twice to close the menu.

3.7.3 Selecting line type

You may inscribe lines to denote good fishing spots, areas of special interest, etc. You can even construct simple charts.

1. Press the [MENU] key followed by the A:CHART SETUP, B:TRACKS & MARKS CONTROL and D:MARK SETUP soft keys to show the MARKS & LINES menu.

1. Use the trackball to select line style desired, then press the C:ENTER soft key. The line style "dot" disables line drawing. Edge of lines is determined by mark shape. For example, selecting the circle shape will join lines with a circle as below.

1. Press the [MENU] key twice to close the menu.

3.7.4 Erasing marks, lines

Erasing an individual mark

1. Operate the trackball to place the cursor on the mark you want to erase.
2. Press the [CLEAR] key to erase the mark.

Erasing an individual line

Place the cursor on an end of the line to erase, then press the [CLEAR] key. Placing the cursor at the intersecting point of two line segments will erase both line segments.

Erasing marks, lines by area

This feature is not available when the overlay mode is in use.

1. Press the [MENU] key followed by the A:CHART SETUP, B:TRACKS & MARKS CONTROL and C:ERASE T & M soft keys to show the ERASE menu.
2. Use the trackball to select ERASE MARKS BY AREA, then press the A;EDIT soft key. The menu is erased and the plotter display appears.
3. Use the trackhall to place the cursor at the top left-hand corner of the area

In navigation terminology, a waypoint is a particular location on a voyage whether it be a starting, intermediate or destination point. A waypoint is the simplest piece of information your equipment requires to get you to a destination, in the shortest distance possible.

This unit has 999 waypoints into which you can enter position information. You may enter a waypoint five ways: at own ship position, at MOB position (see page 1-14 for details), by cursor, by range and bearing, and through the waypoint list (manual input of latitude and longitude).

3.8.1 Entering waypoints

Entering a waypoint at own ship position

Press the [SAVE/MOB] key momentarily to store your position as a waypoint. This new waypoint is saved to the waypoint list, under the youngest empty waypoint number.

Entering a waypoint with the cursor

1. Press the [MENU] key to open the menu.
2. Press the C:WAYPOINTS/ROUTES, A:WAYPOINTS and C:WAYPOINT BY CURSOR soft keys. The plotter display appears.
3. Operate the trackball to place the cursor where you want to enter a waypoint.
4. Press the D:NEW WPT soft key. The waypoint window appears and it shows waypoint mark shape, waypoint name, comment (default: time and date), position of waypoint and proximity alarm radius.

1. Press the A:SELECT MARK soft key.
2. Press the A:MARK SHAPE soft key to open the mark shape selection window.

Waypoint mark shape selection window

1. Operate the trackball to select shape desired.
2. Press the C:ENTER soft key.
3. Press the A:SELECT MARK and B:MARK COLOR soft keys in that order to open the waypoint mark color selection window. Select the color desired, then press the C:ENTER soft key.

SELECT COLOR

Entering a waypoint by range and bearing

This method is useful when you want to enter a waypoint using range and bearing to a target found on a radar.

1. Press the [MENU] key to open the menu.
2. Press the C:WAYPOINTS/ROUTES, A:WAYPOINTS and D:WAYPOINT BY RNG & BRG soft keys.
3. A red "X" appears at own ship position, and it is the origin point for range and bearing measurement. Operate the trackball to place the cursor on the location desired. Range and bearing from own ship to the cursor appear at the top of the display.

Note: The origin point of range and bearing can be shifted to the location desired. Operate the trackball to select location, then press the D:START POINT soft key.

1. Press the C:NEW WPT soft key. The waypoint window appears and it shows mark shape, waypoint name, comment (default: date and time), position of waypoint and proximity alarm radius.

Entering a waypoint from the waypoint list

You can manually enter waypoint position from the waypoint list as follows:

1. Press the [MENU] key to open the menu.
2. Press the C:WAYPOINTS/ROUTES and A:WAYPOINTS soft keys.
3. Press the A:LOCAL LIST (lists waypoints in order from nearest to furthest) or B:ALPHANUMERIC LIST (lists waypoints in ALPHANUMERIC order) soft key.

Alphanumeric waypoint list

Local waypoint list

Alphanumeric and local waypoint lists

1. Press the B:NEW WPT soft key to show the waypoint window (see the figure on the previous page). Own ship position is shown in the position box.
2. Select the position box and enter position desired.
3. If desired, change waypoint data following the instructions from step 6 in "Entering a waypoint with the cursor" on page 3-29.

Editing a waypoint from the plotter display

You may edit waypoints from the plotter display as follows:

1. Press the [MENU] key followed by the C:WAYPOINTS/ROUTES and A:WAYPOINTS soft key to open the waypoint menu.
2. Press the C:WAYPOINT BY CURSOR soft key.
3. Operate the trackball to place the cursor on the waypoint which you want to change. A flashing diamond mark appears on the waypoint when it is correctly selected.
4. Press the D:EDIT/MOVE soft key. Three soft keys replace the D:EDIT/MOVE soft key:
   B:EDIT WPT: Edit from the waypoint entry window.
   C:MOVE WPT: Move waypoint to new position with the cursor.
   D:ERASE WPT: Erase waypoint. See paragraph 3.8.3.
5. Press the appropriate soft key. For the "EDIT WPT," the waypoint entry window appears; edit data as appropriate. For "MOVE WPT," do the following:
   a) Operate the trackball to place the cursor on the location desired for the waypoint. A line connects previous position and new position.
   b) Push the [ENTER] knob. The waypoint moves to the cursor position and its position is changed on the waypoint list. If the waypoint is set as destination or is part of a route, you are asked if you are sure to move the waypoint. In this case, push the [ENTER] knob to move the waypoint, or press the [CLEAR] key to cancel.
   c) Press the [MENU] key to finish.

Range and bearing from

own chin to cursor

3.8.3 Erasing waypoints

Erasing a waypoint directly from the plotter display

1. Operate the trackball to place the cursor on the waypoint you want to erase. A flashing diamond mark appears over the waypoint when the waypoint is correctly selected.
2. Press the [CLEAR] key. You are asked if you are sure to erase the waypoint.
3. Push the [ENTER] knob. The waypoint is erased from the plotter screen and the waypoint list.

Erasing a waypoint from the menu

1. Press the [MENU] key followed by the C:WAYPOINTS/ROUTES and A:WAYPOINTS soft key to open the waypoint menu.
2. Press the C:WAYPOINT BY CURSOR soft key.
3. Operate the trackball to place the cursor on the waypoint which you want to erase. A flashing diamond mark appears on the waypoint when it is correctly selected.
4. Press the D:EDIT/MOVE soft key followed by the D:ERASE WPT soft key. You are asked if you are sure to erase the waypoint.
5. Push the [ENTER] knob to erase the waypoint.
6. Press the [MENU] key to close the menu. The waypoint is erased from the plotter screen and the waypoint list.

Erasing a waypoint from the waypoint list

1. Press the [MENU] key to open the menu.
2. Press the C:WAYPOINTS/ROUTES and A:WAYPOINTS soft keys.
3. Press the A:LOCAL LIST or B:ALPHANUMERIC LIST soft key.
4. Use the trackball to select the waypoint you want to erase.

You may change the size of all waypoint marks to small or large (default), or you may turn them off.

1. Press the [MENU] key to open the menu.
2. Press the A:CHART SETUP and C:CHART DETAILS soft keys.

Chart details menu

1. Use the trackball to select WAYPOINTS.
2. Press the A:EDIT soft key.
3. Use the trackball to select LARGE, SMALL or OFF.

LARGE: Shows mark in actual shape. SMALL: Displays all waypoints with an "X" regardless of mark shape selected.

OFF: Tums off all waypoints and their names. Waypoints currently used in navigation are shown regardless of this setting.

1. PLOTTER OPERATION

3.8.5 Searching waypoints

You can search for a waypoint through the alphanumeric waypoint list as follows:

1. Press the [MENU] key.
2. Press the C:WAYPOINTS/ROUTES, A:WAYPOINTS and B:ALPHANUMERIC LIST soft keys to show the alphanumeric list.
3. Press the [MENU] key.
4. Press the C:WAYPOINTS/ROUTES, A:WAYPOINTS and B:ALPHANUMERIC LIST soft keys to show the alphanumeric list.

Search window

Alphanumeric list

1. Use the trackball and the alphanumeric keys to enter up to three alphanumeric characters in the search window. Then, the waypoint searched appears at the top of the screen.
2. Press the [MENU] key to close the menu.

Often a trip from one place to another involves several course changes, requiring a series of route points (waypoints) which you navigate to, one after another. The sequence of waypoints leading to the ultimate destination is called a route. Your unit can automatically advance to the next waypoint on a route, so you do not have to change the destination waypoint repeatedly.

You can store up to 200 routes, and a route may have 35 waypoints.

3.9.1 Creating routes

Entering a route with existing waypoints

This method constructs routes by using existing waypoints.

1. Press the [MENU] key.
2. Press the C:WAYPOINTS/ROUTES soft key.
3. Press the B: ROUTES soft key to open the ROUTE menu. (No data will be shown if there are no routes entered.)

1. Press the B:NEW ROUTE soft key to open the new route entry screen.

New route entry screen

1. If desired you can change the route name shown and/or add a comment. A route name may consist of six characters; comment, 13 characters.
2. Press the B:LOCAL LIST or C:ALPHA LIST soft key to open the waypoint list.
3. Use the trackball to select a waypoint, then press the A:ADD WPT soft key to add it to the route.
4. Repeat step 7 to complete the route.
   Note: To clear last-entered waypoint, press the C:ERASE LST WP soft key. Each press of this key deletes the last waypoint entered.
5. Press the D:SAVE soft key to register the route.
6. Press the [MENU] key to close the menu.

Entering a route with the cursor

Creating voyage-based routes

You can create routes based on your ship's track. The route can be created automatically by time or distance, or manually. This feature is useful when you wish to retrace previous track.

The "SAVE" icon ( [1] ) appears at the top of the screen when a voyage-based route is being created.

1. Press the [MENU] key to open the menu.
2. Press the C:WAYPOINTS/ROUTES soft key.
3. Press the D:CREATE VOYAGE-BASED ROUTE soft key

Save route menu

1. Press the A:NEW soft key to show the new route window.

Note: If you want to tack voyage-based points onto the end of an existing route, select the route with the trackball, then press the B:SELECT

1. Choose how to record points for your route, by time, by range or manual entry, by pressing A:BCKTRK TIME, B:BCKTRK TIME or C:MANUAL soft key as appropriate. For manual entry, go to step 8. For BCKTRK TIME, BCKTRK DIST one of the following displays appears.

(When selecting BCKTRK TIME.)
(When selecting BCKTRK DIST.)

Displays for entry of time, distance interval

1. Enter interval desired with the trackball and the alphanumeric keys. Press the A:START LOG and E:RETURN soft keys followed by the [MENU] key to close the menu. At this moment, a voyage-based route will be created.
2. For manual entry of waypoints, do the following:

a) Press the [SAVE/MOB] key momentarily to enter a waypoint mark at own ship position. A new waypoint is created under the youngest empty waypoint number and added to the route. (At this time you may close the SAVE ROUTE screen by pressing the E:RETURN soft key followed by the [MENU] key.)

b) Repeat step a) as necessary. 35 waypoints may be entered.

To stop recording waypoints and save the route

You can stop recording waypoints and save the route as shown in the procedure below. When 35 waypoints have been entered the message "Total 35 WPTS have been already registered in the route. Stop creating voyage-based route." is displayed. In this case, creation of voyage-based route is stopped.

3.9.2 Connecting routes

Two routes which you have created can be connected as follows to form a new route.

1. Press the [MENU] key to open the menu.
2. Press the C:WAYPOINTS/ROUTES soft key.
3. Press the B: ROUTES soft key.
4. Press the B:NEW ROUTE soft key.
5. If desired enter route name and comment.
6. Press the D:CONNECT soft key.
7. Use the trackball and the alphanumeric keys to enter the route name for the first route, beneath FIRST in the connect route window.

Connect route window

1. Press the A:F<-->R soft key to select direction to follow the waypoints of the route, forward or reverse.

A F I II I F II I I I I I I I I

3.9.3 Inserting waypoints

Waypoints can be inserted in a route as follows:

Inserting a waypoint from the route list

1. Press the [MENU] key to open the menu.
2. Press the C:WAYPOINTS/ROUTES soft key.
3. Press the B: ROUTES soft key.
4. Use the trackball to select a route.
5. Press the C:EDIT ROUTE soft key. The route name screen appears.
6. Press the B:LOCAL LIST soft key.

Edit route menu

1. Use the trackball to place the cursor at the location where you want to insert a waypoint.
2. Press the A:INSERT WPT or C:CHANGE WPT soft key as appropriate. The local waypoint list appears.

1. Use the trackball to select the waypoint you want to insert. (You can switch between the local list and alphanumeric list by using the C:LOCAL LIST and D:ALPHA LIST soft keys.)
2. Press the A:SELECT WPT or A:CHANGE WPT soft key, whichever is displayed.
3. Press the [MENU] key to close the menu.

Inserting a waypoint from the plotter display

Inserting a waypoint before first waypoint or after last waypoint in a route

1. Press the [MENU] key to open the menu.
2. Press the C:WAYPOINTS/ROUTES soft key.
3. Press the B: ROUTES soft key.
4. Use the trackball to select a route.
5. Press the C:EDIT ROUTE soft key.
6. Press the A:PLOT soft key to show the plotter screen.
7. Operate the trackball to place the cursor on the first (or last) waypoint of the route. A flashing diamond appears over the waypoint when it is correctly selected.
8. Press the C:ADD TO START soft key or the C:ADD TO END soft key depending on the waypoint you selected at step 7.
9. Operate the trackball to place the cursor on an existing waypoint (C:ADD WPT soft key appears) or new location (C:ADD NEW WP soft key appears).
10. Press the C:ADD WPT soft key (C:ADD NEW WP soft key).
11. Press the [MENU] key to close the menu.

Inserting a waypoint in an intermediate location on a route

1. Follow steps 1 through 6 in "Inserting a waypoint before the first or last

3.9.4 Removing waypoints from a route

Removing a waypoint from the route list

1. Press the [MENU] key to open the menu.
2. Press the C:WAYPOINTS/ROUTES soft key.
3. Press the B: ROUTES soft key.
4. Select a route.
5. Press the C:EDIT ROUTE and B:LOCAL LIST soft keys.
6. Select the waypoint you want to remove.
7. Press the B:REMOVE WPT soft key.
8. Press the [MENU] key to close the menu.

Removing a waypoint from the plotter display

1. Press the [MENU] key to open the menu.
2. Press the C:WAYPOINTS/ROUTES soft key.
3. Press the B: ROUTES soft key.
4. Select a route.
5. Press the C:EDIT ROUTE soft key.
6. Press the A:PLOT soft key to show the plot screen.
7. Operate the trackball to place the cursor on the waypoint you want to remove from the route.
8. Press the D:REMOVE WPT soft key. The route is redrawn, eliminating the waypoint removed.
9. Press the [MENU] key to close the menu.

3.9.5 Erasing routes

1. Press the [MENU] key to open the menu.
   2 Press the C:WAYPOINTS/ROUTES soft key

This section shows you how to get to a desired destination by "quick points," waypoints, port services and routes.

Note: Reciprocal setting and canceling of destination is available by outputting the data sentence ZDA from the NavNet unit connected to the navigator.

3.10.1 Navigating to a "quick point"

The "quick point" feature allows you to navigate to point(s) without retaining the data indefinitely in your unit's memory.

Selecting quick point entry method

You need to tell your unit how to set the quick point: 1 POINT, 35 POINTS (up to 35 points) or 35PTS/PORT SVC. (For how to navigate to points/port services see "3.10.2 Navigating to ports, port services" on page 3-45.)

1. Press the [MENU] key.
2. Press the B:PLOTTER SETUP soft key.
3. Use the trackball to select SET GOTO METHOD, then press the A:EDIT soft key.

Go to method window

Navigating to multiple quick points

1. Select "35 POINTS" following the procedure in "Selecting quick point entry method" on the previous page.
2. Press the D:GOTO soft key.
3. Place the cursor on an existing waypoint (C:SELECT WPT soft key appears) or a new location (C:ADD QP soft key appears).
4. Depending on the action taken at step 3, press the C:SELECT WPT or C:ADD QP soft key. "QP<01>" appears at the cursor location if a quick point is selected. To erase last-entered quick point (waypoint), press the D:ERASE LST QP (D:ERASE LST WP) soft key.
5. Repeat steps 3 and 4 to complete the route.
6. Push the [ENTER] knob to finish.

A solid light-blue line with arrows connects between own ship and the first point and all other points are connected with a green dashed line with arrows. Arrows on the line show the direction to follow to get to your destination. Quick points are numbered in sequential order from QP<01> and are saved to the waypoint list. Range and bearing from own ship to the first destination appear at the top of screen. The quick points are saved as a route, under the name "Q>RTE" (Quick Route).

3.10.2 Navigating to waypoints

Selecting a waypoint from the plotter display

1. Operate the trackball to select a waypoint.
2. Press the D:GOTO WPT soft key.
   Note: GOTO method should be selected to "1 POINT" on the PLOTTER SETUP

Selecting an external waypoint

You can select a waypoint (or route) entered at an external plotter connected with NMEA cable. This function requires the RMB data sentence.

1. Press the [MENU] key, B:PLOTTER SETUP soft key to show the PLOTTER SETUP menu.
2. Use the trackball to select QP.
3. Press the C:ENTER soft key or [ENTER] knob to show the QP window.

QP window

1. Select EXT WPT (RMB).
2. On a connected external plotter, set a waypoint (or route) as the destination. Selected waypoint (route) appears on the NavNet plotter screen. (on radar screen, a lollipop appears to show the waypoint.)

3.10.3 Navigating to ports, port services (NavCharts™/C-MAP)

NavCharts™/C-MAP have a port service list which shows services available at ports or harbors. (See page 3-13.) You can use the list to set your destination as follows:

1. Select "35 PTS/PORT SVC" following the procedure in "Selecting quick point entry method" on page 3-44.
2. Place the cursor on the location desired, then press the D:GOTO soft key.

Port services (NavChart)

Port list (NavChart™, Italy)

Port services (C-MAP)

Port services and sample port list

1. If you selected PORT (NavCharts™ only) at step 3, use the trackball to select a port, then press the C:ENTER soft key. Make a route using the soft keys, then push the [ENTER] knob. (If you want to go directly to that port, simply press the C:ADD QP soft key followed by the [ENTER] knob.)

If you selected NEAR SRVC at step 3, select service mark desired with the trackball and then push the C:ENTER soft key or the [ENTER] knob. Then, the display shows the locations of those services nearest you. (The figure below shows the location of filling stations in an area in southern Italy.) Use the trackball to place the "hand cursor" on the port service icon desired, then press the C:ENTER soft key. Make a route using the soft keys, then push the

3.10.4 Following a route

Selecting the route to follow

1. Press the [MENU] key to open the menu.
2. Press the C:WAYPOINTS/ROUTES soft key.
3. Press the B:ROUTES soft key to open the route list.
4. Select a route.
5. Press the A:GOTO soft key to show the plotter display. The cursor is on the waypoint nearest own ship.

Plotter display, route selected as destination

1. Operate the trackball to place the cursor on the waypoint or leg in the route from where to start navigating the route.
2. Press the C:GOTO WPT or C:FOLLOW LEG soft key, depending on the action taken at step 6.

A solid light-blue line with arrows runs between own ship and first waypoint.

Restarting navigation

When you steer to avoid an obstacle or the vessel drifts, you may go off your intended course, as in Line 1 in the figure below. Also, if you don't need to return to the original course, you can go directly to the next waypoint, as in Line 2 in the figure below. In these cases, use the restart navigation function to restart navigation.

Example of when to restart navigation

1. Press the [MENU] key to open the menu.
2. Press the C:WAYPOINTS/ROUTES soft key.
3. Press the C:LOG soft key.

Setting speed for ETA calculation

Speed, which may be input manually or automatically, is required to calculate ETA (Estimated Time of Arrival) to a destination.

1. Press the [MENU] key to open the menu.
2. Press the C:WAYPOINTS/ROUTES soft key.
3. Press the C:LOG soft key.
4. Press the D:SPEED soft key.

Select speed for ETA window

1. Enter speed manually in the SPD field, or use GPS speed data (if applicable) by selecting GPS AVG. SPEED.
2. Press the C:ENTER soft key or the [ENTER] knob to register your selection.
3. Press the [MENU] key to close the menu.

Switching waypoints

When you arrive to a waypoint on a route, you can switch to the next waypoint by one of the three methods below.

PERPENDICULAR: Automatically switches the destination waypoint when the boat comes passes an imaginary perpendicular line passing through the center of the destination waypoint.

ARRVL ALM CRCL: Destination waypoint is automatically switched when the

To select waypoint switching method do the following:

1. Press the [MENU] key.
2. Press the B:PLOTTER SETUP soft key.
3. Use the trackball to select WAYPOINT SWITCHING.
4. Press the A:EDIT soft key to show the waypoint switching window.
5. Use the trackball to select appropriate waypoint switching method; PERPENDICULAR, ARRVL ALM CRCL, or MANUAL.
6. Press the C:ENTER soft key.
7. Press the [MENU] key to close the menu.

3.10.5 Canceling route navigation

1. Press the [MENU] key to open the menu.
2. Press the C:WAYPOINTS/ROUTES soft key.
3. Press the C:LOG soft key.
4. Press the B:STOP soft key.
5. Push the [ENTER] knob.
6. Press the B:RELEASE soft key.
7. Push the [ENTER] knob.

The plotter section has eight conditions which generate both audio and visual alarms: arrival alarm, anchor watch alarm, XTE (Cross Track Error) alarm, proximity alarm, speed alarm, trip alarm, water temperature alarm and bottom alarm. (The bottom and water temperature alarms, which require depth and water temperature data, may also be set on the sounder alarm menu. For these alarms see Chapter 4.)

You may set up the plotter alarms on the ALARM menu, which may be displayed by pressing the [ALARM] key.

graph TD
    A["AUDIO ALARM INTERNAL BUZZ"] --> B["ARRIVAL ALARM OFF 0.010nm"]
    B --> C["ANCHOR WATCH ALARM OFF 0.010nm"]
    C --> D["PROXIMITY ALARM OFF"]
    D --> E["XTE ALARM OFF 0.050nm"]
    E --> F["SPEED ALARM OFF"]
    F --> G["TRIP ALARM OFF 0000.0nm"]
    G --> H["ALARM INFORMATION NO ALARM"]
    H --> I["ALARM1"]
    I --> J["EUTA"]
    J --> K["D NEXT PAGE"]
    K --> L["C CLEAR ALARM"]
    L --> M["D NEXT PAGE"]
    M --> N["E PREV PAGE"]
    N --> O["RETURN"]
    O --> P["ALARM2"]
    P --> Q["EUTA"]
    Q --> R["C CLEAR ALARM"]
    R --> S["E PREV PAGE"]
    S --> T["ALARM INFORMATION NO ALARM"]

Page 2 Page 1
Plotter alarm menu

3.11.1 Audio alarm on/off

Audio and visual alarms are released whenever an alarm setting is violated. You can enable or disable the audio alarm as follows:

1. PLOTTER OPERATION

3.11.2 Arrival alarm

The arrival alarm informs you that your boat is approaching a destination waypoint. The area that defines an arrival zone is that of a circle which you approach from the outside of the circle. The alarm will be released if your boat enters the circle. When the arrival alarm is active a red dashed circle marks the arrival alarm area.

How the arrival alarm works

1. Press the [ALARM] key to open the alarm menu.
2. Use the trackball to select ARRIVAL ALARM.
3. Press the A:EDIT soft key to show the arrival alarm window.

The anchor watch alarm informs you that your boat is moving when it should be at rest. When the anchor watch is active, a red dashed circle with an "X" at its center marks the anchor watch area.

Your ship's position where you start the anchor watch alarm.

How the anchor watch alarm works

1. Press the [ALARM] key to open the alarm menu.
2. Use the trackball to select ANCHOR WATCH ALARM.
3. Press the A:EDIT soft key to open the anchor alarm window.

Anchor watch alarm window

1. Use the trackball to select ON.

3.11.4 XTE (Cross-Track Error) alarm

The XTE alarm warns you when your boat is off its intended course. When the XTE alarm is active two red dashed lines mark the XTE alarm area.

graph TD
    A["Own ship position"] --> B["Intended course"]
    B --> C["Alarm setting"]
    C --> D["Destination waypoint"]
    style A fill:#f9f,stroke:#333
    style D fill:#ccf,stroke:#333

How the XTE alarm works

1. Press the [ALARM] key to open the alarm menu.
2. Use the trackball to select XTE ALARM.
3. Press the A:EDIT soft key to open the XTE alarm window.

XTE alarm window

1. Use the trackball and the alphanumeric keys to enter alarm setting: Operate the trackball to select digit; use the alphanumeric keys to enter value. The available XTE alarm setting is 0.001 to 9.999 miles.
2. Press the C:ENTER soft key or push the [ENTER] knob to register setting.
3. Press the [ALARM] key to finish.

1. Use the trackball to select WITHIN, UNDER/OVER, or OFF as appropriate
2. For WITHIN and UNDER/OVER use the trackball and the alphanumeric keys to enter alarm range: Operate the trackball to select digit; use the alphanumeric keys to enter value.
3. Press the C:ENTER soft key or push the [ENTER] knob to register setting.
4. Press the [ALARM] key to finish.

3.11.6 Proximity alarm

The proximity alarm alerts you when own ship nears a waypoint, which is marked with the proximity mark, by the proximity alarm radius set for that waypoint on the waypoint list. When own ship is within a waypoint's proximity alarm radius, the alarm sounds. The proximity mark remains on the screen until the waypoint is erased.

Proximity mark

1. Press the [ALARM] key to open the alarm menu.
2. Use the trackball to select PROXIMITY ALARM.
3. Press the A:EDIT soft key to show the proximity alarm window.

The trip alarm informs you when you have traveled a certain distance.

1. Press the [ALARM] key to open the alarm menu.
2. Use the trackball to select TRIP ALARM.
3. Press the A:EDIT soft key to show the trip alarm window.

Trip alarm window

1. Select ON.
2. Use the trackball and the alphanumeric keys to enter alarm setting: Operate the trackball to select digit; use the alphanumeric keys to enter value.
3. Press the C:ENTER soft key or push the [ENTER] knob to register setting.
4. Press the [ALARM] key to finish.

When an alarm setting has been violated, the buzzer sounds and the speaker icon appears and is red. Press the [CLEAR] key to silence the alarm. You can see which alarm has been violated on the ALARM menu. In the example below the arrival alarm has been violated.

1. Press the [ALARM] key. The name of the offending alarm appears in the alarm information window.

Plotter alarm menu, page 1

1. Press the C:CLEAR ALARM soft key to acknowledge the alarm (and silence the buzzer if it was not done with the [CLEAR] key). The color of the speaker icon changes from red to background color. The icon remains on the screen until the cause of the alarm is eliminated or the alarm is disabled. If more

The table below shows the plotter alarm messages and their meanings.

Plotter alarm messages and their meanings

Message	Meaning
ARRIVED AT WAYPOINT XXX!(XXX = waypoint name)	Arrival alarm violated.
ENTERED INTO AVOIDANCE AREA! Proximity alarm violated.
EXCEEDED ANCHOR WATCH LIMIT!	Anchor watch alarm violated.
EXCEEDED XTE LIMIT! XTE alarm violated.
SPEED ALARM! Speed alarm violated.
TEMPERATURE ALARM!	Water temperature alarm violated.
TRIP ALARM! MILEAGE EXCEEDED Trip alarm violated.

3.12 Resetting Trip Distance

Trip distance is shown on the navigation data display. You can reset the trip distance to zero as follows:

1. Press the [MENU] key.
2. Press the E:SYSTEM CONFIGURATION and A:GENERAL SETUP soft keys in that order to show the GENERAL SETUP menu.

General setup menu, page 1

1. Use the trackball to select RESET TRIP LOG, then press the A:EDIT soft key.
2. Use the trackball to select YES, then press the C:ENTER soft key.
3. Press the [MENU] key to close the menu.

With connection of the optional Network Sounder ETR-6/10N/30N you can show video sounder images on the display.

4.1 Principle of Operation

The video sounder determines the distance between its transducer and underwater objects such as fish, lake bottom or seabed and displays the results on screen. It does this by utilizing the fact that an ultrasonic wave transmitted through water travels at a nearly constant speed of 4800 feet (1500 meters) per second. When a sound wave strikes an underwater object such as fish or sea bottom, part of the sound wave is reflected back toward the source (transducer). Thus by calculating the time difference between the transmission of a sound wave and the reception of the reflected sound wave, the depth to the object can be determined.

The entire process begins in the network sounder. Transmitter power is sent to the transducer as a short pulse of electrical energy. The electrical signal produced by the transmitter is converted into an ultrasonic signal by the transducer and transmitted into the water. Any returning signals from intervening objects (such as a fish school) are received by the transducer and converted into an electrical signal. The signals are then amplified in the amplifier section, and finally, displayed on screen.

The picture displayed is made up of a series of vertical scan lines, one for each transmission. Each line represents a snapshot of what has occurred beneath the

There are seven display modes from which to choose: dual frequency, single frequency, marker zoom, bottom zoom, bottom lock, bottom discrimination, and A-scope.

To select a display;

1. Press the [DISP] key and then select sounder display desired.
2. If not already displayed, press the [HIDE/SHOW] key to show the sounder soft keys.
3. Press the D:DISPLAY MODE soft key to show the display mode window.

Display mode window

1. Use the trackball or the [ENTER] knob to select a display. (For how to choose the A-scope display see page 4-7.)

2. Press the E:RETURN soft key to close the window.

3. VIDEO SOUNDER OPERATION

4.2.2 Description of sounder displays

Single-frequency display

Indications on the single frequency display
Note: The water temperature display requires an appropriate water temperature sensor. It can be turned on or off with TEMPERATURE GRAPH on the SOUNDER MENU.

Dual-frequency display

The dual-frequency display provides both LF and HF pictures. This display is useful for comparing the same picture with two different sounding frequencies.

Dual-frequency display

LF picture

The sounder uses ultrasonic pulses to detect bottom conditions. The lower the frequency of the pulse, the wider the detection area. Therefore, the low frequency is useful for general detection and judging bottom condition.

HF picture

The higher the frequency of the ultrasonic pulse the better the resolution. Therefore, the high frequency is ideal for detailed observation of fish school.

Marker-zoom display plus normal sounder display

Bottom-zoom display

The bottom-zoom display expands bottom and bottom fish echoes by the zoom range selected on the SOUNDER RANGE SETUP menu (see paragraph 5.9.3), and is useful for determining bottom hardness. A bottom displayed with a short echo tail usually means it is a soft, sandy bottom. A long echo tail means a hard bottom.

The bottom-lock display provides a compressed normal picture on the right half of the screen and a 10 or 20 feet (3 or 6 meter) wide layer in contact with the bottom is expanded onto the left half of the screen. This mode is useful for discriminating bottom fish from the bottom echo. You may select the bottom lock range from the SOUNDER RANGE SETUP menu. For details, see paragraph 5.9.3.

The bottom discrimination mode displays the bottom echo to help you determine bottom hardness. A bottom displayed with a short echo tail usually means it is a soft, sandy bottom. A long echo tail means a hard bottom.

Bottom discrimination display

A-scope display (display only)

The A-scope display, available in all modes, shows echoes at each transmission with amplitudes and tone proportional to their intensities, on the right 1/10 of the screen. It is useful for estimating fish species and bottom composition. To turn on the A-scope display, press the D:DISPLAY MODE soft key, select display mode

4.2.3 Selecting screen split method in combination displays

On combination sounder displays you can split the screen vertically or horizontally, using the E:SPLIT soft key as below.

How to use the E:SPLIT soft key (example: dual frequency display)

4.3 Automatic Sounder Operation

Automatic sounder operation is useful when you are preoccupied with other tasks and do not have the time to adjust the display.

4.3.1 How the automatic sounder works

The automatic sounder function automatically selects the proper gain, range scale and clutter suppression level according to the depth. It works as follows:

• The range changes automatically to locate the bottom on the lower half of the screen. The range jumps to one step shallower range when the bottom echoes reach a half way point of the full scale from the top and to one step deeper range when they come to the lower edge of the scale.
• The gain is automatically adjusted to display the bottom echo in reddish brown (default color arrangement).
• Clutter, which suppresses low level noise, is automatically adjusted.

4.3.2 Types of automatic sounder modes

Two types of automatic sounder modes are available: CRUISING and FISHING. CRUISING is for tracking the bottom, and FISHING is for searching fish schools. CRUISING uses a higher clutter rejection setting than FISHING therefore it is not recommended for fish detection - weak fish echoes may be erased by the clutter suppression circuit.

4.3.3 How to enable automatic sounder operation

1. If not displayed, press the [HIDE/SHOW] key to show the sounder soft keys.

4.4 Manual Sounder Operation

Manual operation is useful for observing fish schools and bottom using a fixed gain setting.

The gain, range and range shift functions used together give you the means to select the depth you can see on the screen. The basic range can be thought of as providing a "window" into the water column and range shifting as moving the "window" to the desired depth.

4.4.1 Selecting the manual mode

1. If not displayed, press the [HIDE/SHOW] key to show the sounder soft keys.
2. Press the B:AUTO/D. BOX soft key to show the mode/frequency window.
3. Select OFF (MANUAL).
4. Press the E:RETURN soft key.

4.4.2 Selecting display range

Press the [RANGE +] or [RANGE -] key to select a range. The default ranges in feet, meters, fathoms and passi/braza are as below. Note that the range cannot be changed in the automatic sounder mode.

Default sounder ranges

							Range 8 Range 1
							ETR-6/10N	ETR-30N
15 ft	30 ft	60 ft	120 ft	200 ft	400 ft	1000 ft	4000 ft	4500 ft
5 m	10 m	20 m	40 m	80 m	150 m	300 m	1200 m	1500 m
3 fa	5 fa	10 fa	20 fa	40 fa	80 fa	150 fa	650 fa	900 fa

Range 2

Press the [GAIN] key to show the gain window, and adjust the [ENTER] knob or trackball. Current level is shown on the bar, and the setting range is 0-100(%). Press the E:RETURN soft key to finish.

Gain window

Note 1: On the dual-frequency display, the gain can be independently set for LF and HF. Use the C:FREQ LF/HF soft key to select the frequency for which to adjust gain.

Note 2: Gain cannot be adjusted in the automatic sounder mode. The message "SOUNDER GAIN CANNOT BE CHANGED IN AUTO MODE" is displayed when you attempt to do so.

4.4.4 Shifting the range

The basic range may be shifted up or down as desired by pressing the A:SHIFT soft key followed by adjusting the [ENTER] knob. Press the E:RETURN soft key to finish.

4.5 Measuring Depth, Time

The VRM measures the depth and the cross-hair cursor, time.

1. Rotate the [ENTER] knob to shift the VRM; counterclockwise to shift it downward, clockwise to shift it upward. You may also use the trackball to shift the VRM.
2. Roll the trackball horizontally to adjust the cross-hair cursor to measure time.

How to measure depth and time
Note: If, when the range setting is over 1000 ft (m, fa, p/b), the VRM indication and depth scale overlap one another, shift the cross-hair cursor slightly to

4.6 Reducing Interference

Interference from other acoustic equipment operating nearby or other electronic equipment on your boat may show itself on the display as shown below.

Interference from other sounder

Electrical interference

Types of interference

To reduce interference, do the following:

1. Press the [MENU] key.
2. Press the A:SOUNDER MENU soft key.
3. Select NOISE LIMITER, then press the A:EDIT soft key to show the noise limiter window.

Noise limiter window

4.7 Reducing Low Level Noise

Light-blue dots may appear over most of the screen. This is mainly due to sediment in the water, or noise. This noise can be suppressed by adjusting CLUTTER on the SOUNDER SETUP menu.

Appearance of clutter

When the automatic sounder mode is used, clutter is automatically adjusted. To reduce low level noise in manual sounder operation do the following:

1. Press the [MENU] key.
2. Press the A:SOUNDER MENU soft key.
3. Select CLUTTER, then press the A:EDIT soft key to show the clutter window.

Clutter window

1. Adjust the trackball upward or downward to select clutter rejection level desired; 0 (OFF) through 16. The higher the number the higher the degree of

4.8 Erasing Weak Echoes

Sediments in the water or reflections from plankton may be painted on the display in green or light blue. These weak echoes may be erased as below.

-Weak echoes

Appearance of weak echoes

1. Press the [MENU] key.
2. Press the A:SOUNDER MENU soft key.
3. Select SIGNAL LEVEL, and press the A:EDIT soft key to show the signal level window.

16-color display

8-color display

Signal level window

1. Use the trackball to select level of erasure or OFF as appropriate. The higher

2. VIDEO SOUNDER OPERATION

4.9 White Marker

The white marker functions to display a particular echo color in white. For example, you may want to display the bottom echo in white to discriminate fish echoes near the bottom.

1. Press the [MENU] key.
2. Press the A:SOUNDER MENU soft key.
3. Select WHITE MARKER, then press the A:EDIT soft key to open the white marker window.

White marker window

1. Use the trackball to select the color to display in white. As you use the trackball, the number in the white marker window changes, the white marker on the echo strength bar shifts and the selected echo color is displayed in white.

White marker shows color currently displayed in white.

Color bar (16 color) when white marker function is active

4.10 Picture Advance Speed

The picture advance speed determines how quickly the vertical scan lines run across the screen. When selecting a picture advance speed, keep in mind that a fast advance speed will expand the size of the fish school horizontally on the screen and a slow advance speed will contract it.

The advancement speed may be set independent of or synchronized with ship's speed.

4.10.1 Advancement independent of ship's speed

1. Press the [MENU] key.
2. Press the A:SOUNDER MENU soft key.
3. Select PICTURE ADVANCE, and press the A:EDIT soft key to open the picture advance window.

Picture advance window

1. Use the trackball to select speed desired. The fractions in the window denote the number of scan lines produced per transmission. For example, 1/8 means one scan line is produced every eight transmissions. STOP freezes

2. VIDEO SOUNDER OPERATION

4.10.2 Advancement synchronized with ship's speed

With speed data provided by a speed-measuring device, picture advance speed may be set according to ship's speed, the ship's speed dependent mode. As shown in the figure below the horizontal scale of the display is not influenced by the change of ship's speed, thus the speed-dependent picture advance permits judgment of fish school size and abundance at any speed.

graph TD
    A["Same size fish schools"] --> B["Actual Movement"]
    B --> C["FULL SPEED"]
    B --> D["HALF SPEED"]
    C --> E["Normal Mode"]
    D --> F["Speed-Dependent Picture Advance Mode"]
    E --> G["Fish school shrinks as speed is increased; expanded as speed is decreased."]
    F --> H["Fish schools are shown same size regardless of ship's speed."]

How the speed-dependent picture advance mode works

4.11 Display Colors

You can select the number of colors and background color to display as follows:

1. Press the [MENU] key.
2. Press the A:SOUNDER MENU soft key.
3. Select HUE, then press the A:EDIT soft key to show the hue window.

Hue window

1. Use the trackball to select hue number, referring to the table below. (You can see the result of your selection on the display.)

Hue no. and background and echo colors

Hue No.	Echo Color Background Color
1	16 color	Blue
2	8 color	Blue
3 16 color Dark blue
4 8 color Dark blue
5	16 color	White
6	8 color	White
7	16 color	Black
8	8 color	Black

The sounder section has five conditions which generate audio and visual alarms: bottom alarm, fish alarm (bottom lock), fish alarm (normal) and water temperature alarm (temperature sensor required).

You may set up the sounder alarms on the ALARM menu, which may be displayed by pressing the [ALARM] key.

Sounder alarm menu

4.12.1 Audio alarm on/off

The audio alarm sounds whenever an alarm setting is violated. You can enable or disable the audio alarm as follows:

1. Press the [ALARM] key to show the ALARM menu.
2. Use the trackball to select ALARM AUDIO.
3. Does the A.F.D.T soft how to show the audio class windows...

4.12.2 Bottom alarm

The bottom alarm sounds when the bottom echo is within the alarm range set. To activate the bottom alarm, the depth must be displayed. Note that the bottom alarm is turned on or off reciprocally with the bottom alarm on the plotter alarm menu.

1. Press the [ALARM] key to show the ALARM menu.
2. Use the trackball to select BOTTOM ALARM.
3. Press the A:EDIT soft key to show the bottom alarm window.

Bottom alarm window

1. Use the trackball to select ON or OFF as appropriate. For ON, enter alarm range with the trackball and numeric keys: Adjust the trackball to select digit; hit appropriate numeric key to enter value.
2. Press the C:ENTER soft key or push the [ENTER] knob to register setting.
3. Press the [ALARM] key to close the menu.

4.12.3 Fish alarm

The fish alarm sounds when a fish echo is within the preset alarm range. Note that the sensitivity of the fish alarm can be set on the SOUNDER SYSTEM SETUP menu.

The bottom-lock fish alarm sounds when a fish echo is within a predetermined distance from the bottom. Note that the sensitivity of the fish alarm can be set on the SOUNDER SYSTEM SETUP menu.

1. Press the [ALARM] key to show the ALARM menu.
2. Use the trackball to select FISH ALARM (B/L).
3. Press the A:EDIT soft key to show the fish alarm (B/L) window.

Fish alarm (B/L) window

1. Use the trackball to select ON or OFF as appropriate. For ON, use the trackball and numeric keys to enter range: Adjust the trackball to select digit; hit appropriate numeric key to enter value.
2. Press the C:ENTER soft key or push the [ENTER] knob to register setting.
3. Press the [ALARM] key to close the menu.

4.12.5 Water temperature alarm

There are two types of water temperature alarms: WITHIN RANGE and OUT OF RANGE. The WITHIN RANGE alarm sounds when the water temperature is within the range set, and the OUT OF RANGE alarm sounds when the water temperature is higher or lower than the range set. Note that the water temperature alarm is turned on or off reciprocally with the water temperature alarm on the plotter menu.

1. Press the [ALARM] key to show the ALARM menu.
2. Use the trackball to select TEMPERATURE ALARM.
3. Press the A:EDIT soft key to show the temperature alarm window.

Water temperature alarm window

1. Use the trackball to select WITHIN RANGE, OUT OF RANGE or OFF as appropriate. For WITHIN RANEGE or OUT OF RANGR|E, use the trackball and numeric keys to enter alarm range: Adjust the trackball to select digit; hit appropriate numeric key to enter value. To switch between plus and minus and vice versa use the A: +< - ->- soft key.
2. Press the C:ENTER soft key or push the [ENTER] knob to register setting.

3. Press the [ALARM] key to close the menu.

4. VIDEO SOUNDER OPERATION

4.12.6 When an alarm setting is violated...

When an alarm setting has been violated the buzzer sounds and the speaker icon appears in red. Press the [CLEAR] key to silence the alarm. At this time the color of the speaker icon changes from red to background color. You can see which alarm has been violated on the alarm menu display. In the example below the bottom alarm has been violated.

To see which alarm(s) has been violated:

1. Press the [ALARM] key. The name of the offending alarm is shown in the ALARM INFORMATION window.

Sounder alarm menu

1. Press the C:CLEAR ALARM soft key to acknowledge the alarm (and silence the buzzer if it has not already been done with the [CLEAR] key). The color of the speaker icon changes from red to background color. The icon remains on the screen until the reason for the alarm is eliminated or the alarm is disabled.

The table below shows the sounder alarm messages and their meanings.

Sounder alarm messages and their meanings

Message	Meaning
DEPTH ALARM! Bottom alarm violated.
FISH ALARM! Fish alarm violated.
TEMPERATURE ALARM! Water temperature alarm violated.

4.13 Water Temperature Graph

The water temperature graph (appropriate sensor required) plots water temperature on the sounder display. (See the figure on page 4-3.) It can be turned on or off as below.

1. Press the [MENU] key to open the menu.
2. Press the A:SOUNDER MENU soft key.
3. Select TEMPERATURE GRAPH and press the A:EDIT soft key.
4. Select OFF (default setting) or ON as appropriate.
5. Press the C:ENTER soft key.
6. Press the [MENU] key to close the menu.

4.14 Changing Pulse Repetition Rate

Pulse repetition rate can be changed. Normally, the highest rate (20) is used. When in shallow waters, second reflection echoes may appear between surface and actual bottom echo. In this case lower the PRR level. The option "SPD SENSING PRR" means the ship's speed dependent mode, where the PRR changes automatically with ship's speed (required speed input.) For further information about the ship's speed dependent mode, see page 4-18.

1. Press the [MENU] key to open the menu.
2. Press the A:SOUNDER MENU soft key.
3. Select PRR LEVEL.
4. Press the A:EDIT soft key to open the setting window.
5. Use the trackball to select the rate for repetition
6. Press the C:ENTER soft key followed by the [MENU] key to close the menu.

Too small a setting reduces the number of pulse repetitions. This may cause a problem in searching fish schools. Select "20" unless multistage reflections appear on the display.

4.15 Interpreting the Sounder Display

4.15.1 Zero line

The zero line (sometimes referred to as the transmission line) represents the transducer's position, and moves off the screen when a deep phased range is used.

Zero line

4.15.2 Bottom echo

Echoes from the bottom are normally the strongest and are displayed in reddish-brown, but the color and width will vary with bottom composition, water depth, frequency, sensitivity, etc.

In a comparatively shallow depth, a high gain setting will cause a second or sometimes a third or a fourth echo to be displayed at the same interval between them below the first echo trace. This is because the echo travels between the bottom and the surface twice or more in shallow depths.

The color of the bottom echo can be used to help determine the density of the bottom materials (soft or hard). The harder the bottom, the wider the trace. If the

4.15.3 Fish school echoes

Fish school echoes will generally be plotted between the zero line and the bottom. Usually the fish school/fish echo is weaker than the bottom echo because its reflection property is much smaller compared to the bottom. The size of the fish school can be ascertained from the density of the display.

Fish school echoes

4.15.4 Surface noise/Aeration

When the waters are rough or the boat passes over a wake, surface noise may appear near the zero line. As surface turbulence is acoustically equivalent to running into a brick wall, the bottom echo will be displayed intermittently. Similar noise sometimes appears when a water temperature difference (thermocline) exists. Different species of fish tend to prefer different temperature zones, so the thermocline may be useful to help identify target fish. 200 kHz tends to show shallow thermoclines better than 50 kHz.

In rough waters the display is occasionally interrupted due to below-the-ship air bubbles obstructing the sound path. This also occurs when the boat makes a quick turn or reverses movement. Lowering the picture advance speed may reduce the interruption. However, reconsideration of the transducer installation

5. CUSTOMIZING YOUR UNIT

This chapter describes the various options which allow you to set up your unit to suit your needs. For mode-specific menus, e.g. radar, plotter and sounder, make sure that you select the appropriate display before opening one of those menus.

5.1 General Setup

This paragraph shows you how to set up functions common to the plotter, radar and sounder displays. This is done on the GENERAL SETUP menu, which you may display from any mode. These items include language, key beep, units of measurement, data sources, etc.

1. Press the [MENU] key to display the main menu.
2. Press the E:SYSTEM CONFIGURATION soft key.
3. Press the A:GENERAL SETUP soft key.
4. Press the [MENU] key to display the main menu.
5. Press the E:SYSTEM CONFIGURATION soft key.
6. Press the A:GENERAL SETUP soft key.

5. CUSTOMIZING YOUR UNIT

Contents of general setup menu

Item	Description	Settings
Key Beep Turns key beep on/off. On, Off
Language Chooses menu language. English, French, German, Italian, Portuguese, Spanish
Range Unit Chooses unit of range and speed measurement.		nm, kt; km, km/h; sm, mph; nm & yd, kt; nm & m, kt; km & m, km/h; sm & yd, mph
Temperature Unit Chooses unit of water temperature measurement.		°C, °F
Depth Unit Chooses unit of depth measurement. ft, m, fa		P/B (Passi/Braza)
Temperature Source Chooses source of water temperature data.		ETR, NMEA. Select ETR to show water temperature data fed from the network sounder.
Depth Source Chooses source of depth data. ETR, NMEA.		A. Select ETR to show depth data fed from the network sounder.
Reset Trip Log Resets distance run to zero. Yes, No
Speed Source Chooses source of speed data.		ETR, NMEA
Lat/Lon Display Chooses how many digits (or seconds) to display after decimal point in latitude and longitude position.		DD°MM.MM', DD°MM.MMM', DD°MM.MMMM', DD°MM'SS.S"
TD Display Chooses TD type. Loran C, Decca
Speed Chooses speed format to display.		SOG (Speed over ground), STW (Speed through water)
Position Display Chooses position display format.		LAT/LON, TD
Time Display Chooses time notation.		12 hours, 24 hours
Range & Chooses how to calculate range and range.		Rhumb Line: Straight line drawn between two lines

1. CUSTOMIZING YOUR UNIT

5.2 Radar Setup

This paragraph explains how to customize the radar display to suit your operational needs. Before setting up, select the radar display.

5.2.1 Radar display setup

The radar display may be set up from the RADAR DISPLAY SETUP menu, which contains items such as EBL reference and cursor position format.

1. Press the [MENU] key to show the main menu.
2. Press the A:RADAR DISPLAY SETUP soft key.

Radar display setup menu

5. CUSTOMIZING YOUR UNIT

Contents of radar display setup menu

Item	Description	Settings
EBL Reference	References EBL bearing, shown in the EBL data box, to North (True) or heading (Relative). Relative with no heading input. True only in course-up, north-up and true motion.	True, Relative
Cursor Position	Chooses how to display cursor position.Note: "RNG & BRG-TRUE" requires heading data, true bearing. Reverts to relative bearing when heading data is lost.	LAT/LON: Lat/Long position of cursor TD: Loran C or Decca TDsRNG & BRG-REL: Range and bearing in relative bearing.RNG & BRG-TRUE: Range and bearing in true bearing.
Tuning Select	s receiver tuning method. For further details see the paragraph "2.6 Tuning."	Auto, Manual
TX Sector Blanking	Turns on/off dead sector graphic, which shows area where no echoes are transmitted. To set sector, select ON, then enter start bearing from the ship's bow and sector. Max. sector is 135°.Dashed lines mark the dead sector. Note that noise may occasionally appear in the TX sector when the echo trail feature is turned on.	On, Off

5. CUSTOMIZING YOUR UNIT

Contents of radar display setup menu (con't from previous page)

Item	Description	Settings
Background Color	Chooses colors of background, range rings and characters. Effective when C:HUE soft key is set for MANUAL.	Black/GreenBackground: BlackRings: GreenCharacters: GreenBlack/RedBackground: BlackRings: GreenCharacters: RedBlue/WhiteBackground: BlueRings: WhiteCharacters: WhiteDK Blue/WhiteBackground: Dark BlueRings: GreenCharacters: RedWhite/GreenBackground: WhiteRings: GreenCharacters: Green
Echo Color	Chooses echo color.	Yellow, Green, Multi-color. (Multi-color shows echoes in red, yellow or green in order of descending strength.)
2ND Echo Rejection	Reduces second-trace echoes. See the paragraph “2.24 Suppressing Second-trace Echoes.”	On, Off
Watchman Time	Sets watchman stand-by period. For further details see the paragraph “ 2.23 Watchman.”	5, 10, 20 minutes

5. CUSTOMIZING YOUR UNIT

5.2.2 Radar range setup

You may choose the radar ranges you wish to use, from the RADAR RANGE SETUP menu. After choosing the ranges desired, change the range with the [RANGE] key to activate range settings. Available ranges depends on the radar used.

At least two ranges must be turned on. When less than two ranges are turned on you cannot escape from the RADAR RANGE SETUP menu.

Note that this function is not available with the GD-1900C-BB.

1. Press the [MENU] key to show the main menu.
2. Press the B:RADAR RANGE SETUP soft key to show the RADAR RANGE SETUP menu.

^* = Max. range depends on network radar used and is set on the network radar at installation.
Range unit: nm Range unit: km

1. CUSTOMIZING YOUR UNIT

5.2.3 Function key setup

The function keys provide one-touch execution of a desired function. The default radar function key settings are as shown in the table below.

Function Key	Default Function	Function Key	Label
1	Turn heading line off.	HL
2	Turn range rings on/off.	RNG
3	Turn echo trail on/off.	TRL
4	Turn display of center on/off.	SFT
5		Radar source	RSR

If the above settings are not to your liking you may change them as follows:

1. Press the [MENU] key.
2. Press the D:FUNCTION KEY SETUP soft key.

graph LR
    A["Function key setting"] --> B["SOFT KEY 1"]
    C["Function key label"] --> D["SOFT KEY 2"]
    D --> E["RNG: RINGS OFF"]
    F["SOFT KEY 3"] --> G["TRL: ECHO TRAIL"]
    H["SOFT KEY 4"] --> I["SFT: OFFCENTER"]
    J["SOFT KEY 5"] --> K["RSR: RADAR SOURCE"]
    L["FUNCTION KEY"] --> M["FEDITA"]
    N["RETURN"] --> O["Feedback to Function key"]

Radar function key menu

5. CUSTOMIZING YOUR UNIT

1. Select function desired with the trackball, then press the C:ENTER soft key or [ENTER] knob to register your selection.
2. Press the [MENU] key to close the menu.

Radar function keys

Menu Item Function		Function Key Label
OFF Assigns no function. —
HL: HDG LINE OFF Turns heading line off. HL
MOD: MODE Selects presentation mode. MOD
GAI: GAIN Shows gain sensitivity adjustment window. GAI
SEA: A/C SEA Shows A/C SEA adjustment window. SEA
RAI: A/C RAIN Shows A/C RAIN adjustment window. RAI
FTC: FTC	Displays FTC window. Available with Model 1700 series radar. Inoperative otherwise.	FTC
ES: ECHO STRETCH	Turns echo stretch on/off.	ES
PLS: PULSE LENGTH	Sets pulselength (long or short).	PLS
ZOM: ZOOM	Turns zoom on/off.	ZOM
SFT: OFFCENTER	Press to shift display center to cursor location. Press again to turn shift off and return cursor to display center.	SFT
TRL: ECHO TRAIL Starts/stops echo trails. TRL
RNG: RINGS ON/OFF	Turns range rings on/off.	RNG
TLL: TLL OUTPUT	Outputs cursor position, in NMEA format, to navigator.	TLL
ALM: GUARD ALARM	Displays alarm soft keys.	ALM
EFL: EFL	Switches control between EFL4 and EFL2 with	EFL

FBI, FBI
Switches control between FDI 4 and FDI 2 with
rbi

1. CUSTOMIZING YOUR UNIT

5.3 Plotter Setup

This paragraph provides the information necessary for setting up the plotter display.

5.3.1 Navigation options

Navigation options, for example, waypoint switching method, may be set on the PLOTTER SETUP menu.

1. Show the plotter display, then press the [MENU] key open the main menu.
2. Press the B:PLOTTER SETUP soft key.

Plotter setup menu

Contents of plotter setup menu

Item	Description
W	0	1

Settings

5. CUSTOMIZING YOUR UNIT

5.3.2 Function key setup

The function keys provide one-touch execution of a desired function. The default plotter function key settings are as shown in the table below.

Function Key	Default Function	Function Key Label
1 Start/stop recording/plotting own ship's track. TRK
2 Edit mark/line. EML
3 Ruler (measure range and bearing between two points).	RUL
4 Add new waypoint. ADD
5 Alphanumeric waypoint list. APL

If the above settings are not to your liking you may change them as follows:

1. Press the [MENU] key.
2. Press the D:FUNCTION KEY SETUP soft key.

graph TD
    A["Function key setting"] --> B["SOFT KEY 1"]
    C["Function key label"] --> D["SOFT KEY 2"]
    D --> E["EML: EDIT MK/LINE"]
    F["SOFT KEY 3"] --> G["RUL: RULER"]
    H["SOFT KEY 4"] --> I["ADD: ADD NEW WPT"]
    J["SOFT KEY 5"] --> K["ALP: ALPHA LIST"]
    L["TRK: TRACK ON/OFF"] --> M["TRK"]
    N["EML"] --> O["RUL"]
    P["ADD"] --> Q["AIP"]
    R["AIP"] --> S["E RETURN"]

5. CUSTOMIZING YOUR UNIT

1. Select function desired with the trackball, then press the C:ENTER soft key or [ENTER] knob to register your selection.
2. Press the [MENU] key to close the menu.

Plotter function keys

Menu Item Function		Function Key Label
OFF Assigns no function.	—
ADD: ADD NEW WPT Registers waypoint at cursor position. Place cursor for waypoint location, then press function key.		ADD
MWP: MOVE WPT Moves selected waypoint to different position.Select waypoint, press function key, select new position, then press the [ENTER] knob.		MWP
RUL: RULER Measures range and bearing between two points.Press D:START POINT soft key to change starting point if necessary. Range and bearing between two points appears at the top of the screen.		RUL
GWP: GOTO WPT Specify waypoint to set as destination. Enter waypoint name in window, then press the C:ENTER soft key.		GWP
GRT: GOTO ROUTE Specify route to follow. Enter route name in window, then press the C:ENTER soft key.		GRT
EML: EDIT MK/LINE Displays mark & line menu. Press appropriate soft key to access menu item.		EML
TRK: TRACK ON/OFF Each press starts or stops recording/plotting own ship's track.		TRK
TTM: TTM ON/OFF Turns TTM (target track) display on/off.		TTM
DTT: DEL TGT TRACK Erases all TTM track.		DTT

1. CUSTOMIZING YOUR UNIT

5.4 Chart Setup

This paragraph shows you how to setup digital charts, from offsetting chart position to turning chart attributes on or off.

5.4.1 Chart offset

In some instances position may be off by a few seconds. For example, the position of the ship is shown to be at sea while it is in fact moored at a pier. You can compensate for this error by offsetting chart position as shown in the procedure below.

1. Show the plotter display, then press the [MENU] key followed by the A:CHART SETUP and A:CHART OFFSET soft keys.

Plotter display, chart offset selected

1. Use the trackball to place the cursor at the correct latitude and longitude position of own ship.

2. CUSTOMIZING YOUR UNIT

5.4.2 FURUNO, NavCharthart attributes

FURUNO, NavCharts™ chart attributes may be turned on or off from the CHART DETAILS menu, which you may display as follows:

1. Press the [MENU] key.
2. Press the A:CHART SETUP and C:CHART DETAILS soft keys.

Chart details menu (FURUNO, NavCharts™)

5. CUSTOMIZING YOUR UNIT

Contents of chart details menu (FURUNO, NavCharts™)

Item	Description	Settings
Lat/Lon Grid Latitude and longitude grids Red, yellow, green, light-blue,purple, blue, white, Off
Text Information	Geographic place, name On, Off
Waypoints Waypoint size Large, Small, Off
Waypoint Names	Waypoint name On, Off
Chart Border Lines	Border lines (indices) On, Off
Landmass	Landmass color, brightness Bright, Dim: Red, yellow,green, light-blue, purple, blue,white.Off
Background Chart background color White, Black
Navaids Navalds data on NavChartsTM;lighthouse data on FURUNO charts		On, Off
Light Sector Info	Lighthouse viewing sector On, Off
Other Symbols	Other map symbols	Red, yellow, green, light-blue,purple, blue, white, Off
Marks Size	Marks size	Large, Small
B:CNTOUR LINE soft key(See next page.)	Depth < 10 m	On, off, red, yellow, green,light-blue, purple, blue, white
	Depth = 10 m	On, off, red, yellow, green,light-blue, purple, blue, white
	Depth > 10 m	On, off, red, yellow, green,light-blue, purple, blue, white

1. CUSTOMIZING YOUR UNIT

B:CNTOUR LINE soft key

1. Press the [MENU] key.
2. Press the A:CHART SETUP and C:CHART DETAILS soft keys.
3. Press the B:CNTOUR LINE soft key.

Contour line menu (FURUNO, NavCharts™)

5.4.3 C-MAP chart attributes

C-MAP chart attributes may be turned on or off from the CHART DETAILS menu as follows:

1. Press the [MENU] key.
2. Press the A:CHART SETUP and C:CHART DETAILS soft keys.

5. CUSTOMIZING YOUR UNIT

Contents of chart details menu (C-MAP)

Item	Description	Settings
Waypoint Waypoint display Plotter/Overlay, Plotter, Off
Waypoint Name	Waypoint name Plotter/Overlay, Plotter, Off
Lat/Lon Grid Latitude and longitude grids Plotter/Overlay, Plotter, Off
Chart Border Line	Border lines (indices)	Plotter/Overlay, Plotter, Off
Background Color	Chart background color White, Black
Port & Service	Port services icon display Plotter/Overlay, Plotter, Off
Attention Area	Attention area icon display Plotter/Overlay, Plotter Plotter/Contour, Off
Nav Lane Navigation lanes Plotter/Overlay, Plotter, Off
Light Lighthouse icon, sector Plotter/Overlay, Plot/No Sector, Off
Buoy & Beacon	Buoys, beacons display	Plotter/Overlay, Plotter, Off
Signal	Signals category icon	Plotter/Overlay, Plotter, Off
Cartographic Object	Cartographic objects category icon	Plotter/Overlay, Plotter, Off
Place Name Geographic names Plotter/Overlay, Plotter, Off
Compass Compass category icons Plotter/Overlay, Plotter, Off
Tide & Current	Tide display	Plotter/Overlay, Plotter, Off
Natural	Land outline	Plotter/Overlay, Plotter, Off

5. CUSTOMIZING YOUR UNIT

Contents of chart details menu for C-MAP (con't from previous page)

Item	Description	Settings
A:DEPTHINFO soft key(See below.)	Bathymetric Line Plotter/Overlay, Plotter, Off
	Spot Sounding Plotter/Overlay, Plotter, Off
	Bottom Type Plotter/Overlay, Plotter, Off
	Depth Area Limit 0-99999 ft (m, fa, P/B)
	Bathymetric Range 0-99999 ft (m, fa, P/B)

Settings description

Basic: Shows basic characteristics of objects.

Detailed: Shows detailed characteristics of objects.

Multiple: Shows multiple icons for complex objects.

Off: Turns item off.

On: Turns item on.

Plotter: Shows item on plotter display.

Plot/No Sector: Shows item on plotter display. Sector not shown.

Plotter/Contour: Shows contour on plotter display.

Plotter/Overlay: Shows item on plotter and overlay displays.

Single: Shows single icon for complex objects.

A:DEPTH INFO soft key

1. Press the [MENU] key.

2. Press the A:CHART SETUP and C:CHART DETAILS soft keys.

3. Press the A:DEPTH INFO soft key.

5. CUSTOMIZING YOUR UNIT

5.5 Data Boxes Setup

You may select the data to show in the data boxes for the plotter, radar and sounder displays. Six boxes may be displayed in case of small size data box and two for large size data box.

1. Display the radar, plotter or sounder display, whichever you want to set.
2. Press the [MENU] key to open the main menu.
3. Press one of the following sets of soft keys depending on the display selected at step 1.

Plotter mode: B:PLOTTER SETUP, B:D. BOX

Radar mode: A:RADAR DISPLAY SETUP, B:D. BOX

Sounder mode: A:SOUNDER MENU, B:D. BOX

Data box menu

1. Use the trackball to select an item, then press the A:EDIT soft key.

2. Select ON or OFF as desired.

3. Does the O-ENTED --4 key --the [ENTED] key is socializing selection

4. CUSTOMIZING YOUR UNIT

5.6 Hot Page Setup

Six user-arrangeable hot pages are provided for quick selection of desired display. If the default hot pages are not to your liking you may change them as shown below.

1. Press the [MENU] key followed by pressing the E:SYSTEM CONFIGURATION, C:SYSTEM SETUP, C:HOT PAGE & NAV DISP SETUP and A:HOT PAGE SETUP soft keys in that order.
2. Use the trackball to select the hot page number to set, then press the A:EDIT soft key. The "SELECT SCREEN TYPE" window appears.

Hot page setup menu

1. Use the trackball to select screen type desired among FULL SCREEN, SPLIT X 2 and SPLIT X 3 and push the [ENTER] knob.

For the full-screen display, rotate the [ENTER] knob to select screen desired, then press the [ENTER] knob. If you selected a split screen, for example,

5. CUSTOMIZING YOUR UNIT

1. Rotate the [ENTER] knob to select a main screen, then press the [ENTER] knob. For example, select the radar display. Your choice is then shaded to show that it has been selected.

Hot page setup menu, SPLIT X 3 screen, sub screen selection

1. Rotate the [ENTER] knob to select the screen to show at the top right 1/4 screen, then press the [ENTER] knob or the C:ENTER soft key.
2. Rotate the [ENTER] knob to select the screen to show at the bottom right 1/4 screen, then press [ENTER] knob or the C:ENTER soft key.

Note: The A:SELECT WINDOW soft key functions to select the window to process.

1. Press the [MENU] key to close the menu.

2. CUSTOMIZING YOUR UNIT

5.7 Navigator Setup

This section provides the information necessary for selecting the type of navigator connected to your plotter.

5.7.1 Navigation data source

The NAV SETUP menu mainly selects the source of nav data. For GPS receiver other than the GP-310B/320B, speed averaging and local time offset (to use local time) are also available.

Press the [MENU] key followed by the E:SYSTEM CONFIGURATION, B:NAV OPTION and A:NAV SOURCE SETTINGS soft keys to display this menu.

* For GPS receiver other than GP-310B/320B.
Nav setup menu

Contents of nav setup menu

Item	Description	Settings
Position Source	Chooses source of position data.	FURUNO BB GPS: GPSReceiver GP-310B/320BGP: GPS navigator (via NETWORK or NMEA port)LC: Loran C navigator (via NETWORK or NMEA port)ALL: Multiple navaid connection

5. CUSTOMIZING YOUR UNIT

5.7.2 GPS receiver setup (Set equipped with GP-310B/320B)

The GPS SETUP menu sets up the GP Receiver GP-310B/320B. Press the [MENU] key followed by the E:SYSTEM CONFIGURATION, B:NAV OPTION and B:GPS SENSOR SETTINGS soft keys to display this menu.

GPS setup menu

Contents of GPS setup menu

Item	Description	Settings
Local Time Offset	GPS uses UTC time. If you would rather use local time, enter the time difference between it and UTC. Use the A:+< - ->- soft key to switch from plus to minus and vice versa.	-13:30 to +13:30 hours
Geodetic Datum	Geodetic datum is a reference for geodetic survey measurements consisting of fixed latitude, longitude and azimuth values associated with a defined station of reference. You must have the same geodetic datum selected in your clothes.	See Appendix for full list.

5. CUSTOMIZING YOUR UNIT

Contents of GPS setup menu (con't from previous page)

Item	Description
Position Smoothing	When the DOP or receiving condition is unfavorable, the GPS fix may change greatly, even if the vessel is not moving. This change can be reduced by smoothing the raw GPS fixes. A setting between 000 to 999 is available. The higher the setting the more smoothed the raw data. If the setting is too high, the response time required to show a change of latitude and longitude will be too long. This is especially noticeable if the vessel is moving fast. Increase the setting if the GPS fix changes randomly.	0-999 seconds
Spd/Cse Smoothing	During position fixing, ship's velocity (speed and course) is directly measured by receiving GPS satellite signals. The raw velocity data may vary too much depending on receiving conditions and other factors. You can reduce this random variance by increasing the smoothing. The higher the smoothing setting, the more the raw data will be averaged. If this setting is high, the response to speed and course changes will slow. For no smoothing, enter all zeroes.	0-999 seconds
GPS Speed Averaging	Calculation of ETA is based on average ship's speed over a given period. If the period is too long or too short, calculation error will result. Change this setting if calculation error occurs. The default setting is suitable for most conditions.	0-999 seconds
Latitude, Longitude Offset	Offsets latitude position to further refine position accuracy.	0.001°S – 9.999°N0.001°E – 9.999°W

Settings

5. CUSTOMIZING YOUR UNIT

Contents of GPS setup menu (con't from previous page)

Item	Description	$
Disable Satellite	Every GPS satellite is broadcasting abnormal satellite number(s) in its Almanac, which contains general orbital data about all GPS satellites, including those which are malfunctioning. Using this information, the GPS receiver automatically eliminates any malfunctioning satellite from the GPS satellite schedule. However, the Almanac sometimes may not contain this information. If you hear about a malfunctioning satellite from another source, you can disable it manually. Enter satellite number (two digits, max. 3 satellites), then press the C:ENTER soft key.	Max. 3 satellites
Latitude	Sets initial latitude position after cold start. Use the A:N< - ->S soft key to switch coordinate.	—
Longitude	Sets initial longitude position after cold start. Use the A:W< - ->E soft key to switch coordinate.	—
Antenna Height	Enters the height of the GPS antenna unit above sea surface. For further details refer to the installation manual.	0-99 m
GPS Fix Mode	Chooses position fixing method: 2D (three satellites in view), 2D/3D (three or four satellites in view whichever is greater).	2D, 2D/3D
Cold Start	Clears the Almanac to receive the latest Almanac. No, Yes
B:GPS STATUS (soft key)	Displays GPS satellite status display. Requires GPS Receiver GP-310B/320B or GPS navigator outputting the data sentence GSA or GSV. For further details see the chapter on Maintenance.

settings

5. CUSTOMIZING YOUR UNIT

WAAS SETUP

Press the C:WAAS SETUP soft key to show the WAAS SETUP display.

Note: This function requires the GPS receiver GP-320B.

Contents of WAAS SETUP menu

Item	Description
WAAS MODE Select ON to use the WAAS mode. On, Off
WAAS SEARCH	WAAS satellite can be searched automatically or manually. For manual search, enter appropriate WAAS satellite number.	Auto, Manual
WAAS ALARM When the WAAS signal is lost, the audible alarm sounds with the visual message “NO WAAS SIGNAL.”On: Alarm continues to sound until the WAAS positioning mode is available again or the alarm is recognized by key operation.Off: Alarm sounds three times.	On, Off
CORRECTION DATA SET	Selects the type of message for WAAS correction. Use “02 (default setting)” until the system becomes operational.	00 to 27, 99

Setting

5. CUSTOMIZING YOUR UNIT

5.7.3 TD display setup

The TD SETUP menu sets which Loran C or Decca chain to use to display TD position. (Connection of a Loran C or Decca navigator is not necessary to display TD position.)

1. Press the [MENU] key.
2. Press the E:SYSTEM CONFIGURATION, B:NAV OPTION and C:TD SETUP soft keys to display the TD SETUP menu.

TD setup menu

Displaying Loran C TDs

1. Select GRI, then press the A:EDIT soft key to show the GRI & station pair window.

5. CUSTOMIZING YOUR UNIT

1. If necessary, you may enter a position offset to refine Loran C position accuracy. Select (GRI) CORRECTION 1 or CORRECTION 2, then press the A:EDIT soft key. Enter correction value with the trackball and alphanumeric keys. Use the + < - - > - soft key to switch from plus to minus and vice versa. Press the C:ENTER soft key or push the [ENTER] knob.

2. Press the E:RETURN soft key twice.

3. Press the A:GENERAL SETUP soft key followed by the D:NEXT PAGE soft key.

4. Select "LORAN C" from "TD DISPLAY" and "TD" from "POSITION DISPLAY."

5. Press the [MENU] key twice to close the menu.

Displaying DECCA TDs

1. Select CHAIN, then press the A:EDIT soft key to show the chain & station pair window.

Decca chain and station pair window

1. Adjust the trackball upward or downward to select Decca chain number.
2. Roll the trackball rightward to show the display below, to enable selection of station pair.

5. CUSTOMIZING YOUR UNIT

5.8 Nav Data Display Setup

The nav data display shows various navigation data, fed from a navigator, network equipment, etc. You may select the data to display and where to display it as follows:

1. Press the [MENU] key to open the main menu.
2. Press the E:SYSTEM CONFIGURATION, C:SYSTEM SETUP, C:HOT PAGE & NAV DISP SETUP and B:NAV DATA DISPLAY SETUP soft keys.

Nav data setup screen

1. Use the trackball to select a location.
2. Press the A:EDIT soft key. The following display appears.

1. CUSTOMIZING YOUR UNIT

5.9 Sounder Setup

This section shows you how to customize your network sounder to your liking. You can set fish alarm sensitivity, fine tune sensors, etc.

5.9.1 System setup

1. Show the sounder display, then press the [MENU] key.
2. Press the B:SOUNDER SYSTEM SETUP soft key.

Page 1

Page 2 (when connected ETR-30N only)

Sounder system setup menu
Sounder system setup menu description

Item	Description	Settings
Fish Alarm Level	Sets the fish alarm sensitivity; that is, the minimum echo strength which will	High: Orange and stronger echoes trigger the alarm.*

5. CUSTOMIZING YOUR UNIT

Sounder system setup menu description (con't from previous page)

Item	Description
Echo Offset (HF, LF)	If the on-screen echo level appears to be too weak or too strong and the level cannot be adjusted satisfactorily with the gain control, adjust echo offset to compensate for too weak or too strong echoes.	-50 - +50
Bottom Level (HF, LF)	If the depth indication is unstable in automatic operation or the bottom echo cannot be displayed in reddish-brown by adjusting the gain control in manual operation, you may adjust the bottom echo level detection circuit, for both HF and LF, to stabilize the indication. Note that if the level is set too low weak echoes may be missed and if set too high the depth indication will not be displayed.	-100 - +100
KP Pulse	Selects source of keying pulse.	Internal, External (See installation manual.)
Smoothing Smoothes echoes to present stable display. The higher the setting the greater the smoothing.		SM1-SM4, OFF
TLL Output Outputs current position to plotter where it is marked with TLL mark. Use soft key to output TLL.		ON, OFF
STC (HF, LF) (For ETR-30N only)	Adjusts STC level for the high and low frequencies, and is useful for suppressing surface noise. The setting range is 0-10; the higher the setting the greater the extent of suppression. Setting 10 suppresses noise up to several meters. Turn off the STC when there is no noise on the screen, otherwise weak echoes may be missed.	0-10
FREQ. ADJ. (HF, LF) (For ETR-30N only)	Interference from other acoustic equipment operating nearby or other electronic equipment on your boat may show itself on the display. You may suppress these two of interference by adjusting	-10 - +10 %

Settings

1. CUSTOMIZING YOUR UNIT

5.9.2 Sensor setup

The SENSOR SETUP menu lets you further refine speed, water temperature and depth data fed from the network sounder.

1. Show the sounder display, then press the [MENU] key.
2. Press the B:SOUNDER SYSTEM SETUP and B:SENSOR SETUP soft keys to show the SENSOR SETUP menu. The current ship's speed, water temperature, depth and speed of sound are shown at the bottom of the menu.

Sensor setup menu

1. Select item to adjust, then press the A:EDIT soft key.
2. Adjust the trackball upward or downward to set appropriate value.
   Speed and temperature calibrations: Enter plus or minus value. For example, if the water temperature readout is 77^ F but the actual water temperature is 75^ F, enter -2(^) .

5. CUSTOMIZING YOUR UNIT

5.9.3 Sounding range, zoom range, bottom lock range

This paragraph shows you how to set custom ranges for basic range, zoom range (marker and bottom zoom) and bottom lock range. All default basic ranges are restored whenever the unit of depth measurement is changed. Therefore, change the depth unit before changing the basic ranges.

1. Show the sounder display, then press the [MENU] key to open the main menu.
2. Press the C:SOUNDER RANGE SETUP soft key to show the SOUNDER RANGE SETUP menu.

'2000 ft when using ETR-6/10N

Sounder range setup menu

1. Select the range to change, then press the A:EDIT soft key.

2. Rotate the trackball or [ENTER] knob to set range desired, then press the E:RETURN soft key. For basic range, set depth from lowest to highest; a range cannot be higher than its succeeding neighbor.

3. CUSTOMIZING YOUR UNIT

5.9.4 Function key setup

The function keys provide one-touch execution of a desired function. The default sounder function key settings are as shown in the table below.

Function Key	Default Function Function Key Label
1 Output current position.		TLL
2 Suppress clutter.		CLT
3 Erase weak signal. SLV
4 Suppress noise.		NL
5 Set picture advancement speed. PA

If the above settings are not to your liking you may change them as follows:

1. Show the sounder display.
2. Press the [MENU] key.
3. Press the D:FUNCTION KEY SETUP soft key.

graph TD
    A["Function key setting"] --> B["SOFT KEY 1"]
    A --> C["SOFT KEY 2"]
    A --> D["SOFT KEY 3"]
    A --> E["SOFT KEY 4"]
    A --> F["SOFT KEY 5"]
    B --> G["TLL: TLL OUTPUT"]
    C --> H["CLT: CLUTTER"]
    D --> I["SLV: SIGNAL LEVEL"]
    E --> J["NL: NOISE LIMITER"]
    F --> K["PA: PICTURE ADV"]
    G --> L["A EDIT"]
    H --> M["RETURN"]
    I --> N["RETURN"]
    J --> O["RETURN"]
    K --> P["RETURN"]

5. CUSTOMIZING YOUR UNIT

1. Select function desired with the trackball, then press the C:ENTER soft key or [ENTER] knob to register your selection.
2. Press the [MENU] key to close the menu.

Sounder function keys

Menu Item Function		Function Key Label
OFF Assigns no function.
MOD: AUTO MODE Display automatic mode selection window. MOD
GHF: GAIN - HF Displays high frequency gain adjustment window. GHF
GLF: GAIN - LF Displays low frequency gain adjustment window. GLF
SFT: SHIFT Shifts range in manual operation. SFT
NL: NOISE LIMITER Suppresses noise.		NL
CLT: CLUTTER	Suppresses clutter.	CLT
WMK: WHITE MARKER	Sets white marker.	WMK
HUE: HUE	Sets hue.	HUE
SLV: SIGNAL LEVEL	Erases weak signals.	SLV
PA: PICTURE ADV	Sets picture advance speed.	PA
TG: TEMP. GRAPH	Tums temperature graph on/off.	TG
TVH: TVG - HF	Sets TVG for high frequency	TVH
TVL: TVG - LF	Sets TVG for low frequency.	TVL
EOH: OFFSET - HF	Offsets echo strength for high frequency.	EOH
EOL: OFFSET -LF	Offsets echo strength for low frequency.	EOL
SMT: SMOOTHING	Sets echo smoothing rate.	SMZ
ZMR: ZOOM RANGE	Sets zoom range.	ZMR
BLR: B/L RANGE	Sets bottom lock range for bottom-lock display.	BLR

6. DATA TRANSFER

This chapter provides information for saving and replaying data to and from memory cards, uploading and downloading data, loading waypoint data from Yeoman, and outputting data through the network.

6.1 Memory Card Operations

The memory cards store these data: marks, lines, waypoints, routes, track, and setting data (plotter only).

6.1.1 Formatting memory cards

Before you can use a memory card it must be formatted. This prepares the card for use with the system. Note that formatting a memory card erases all data from the card.

1. Insert a blank memory card into the card slot.
2. Press the [MENU] key followed by the E:SYSTEM CONFIGURATION, D:DATA TRANSFER, A:SAVE/LOAD DATA and C:SAVE DATA TO MEMORY CARD soft keys to show the SAVE DATA menu.

1. DATA TRANSFER

6.1.2 Saving data to a memory card

1. Insert a formatted memory card into the slot.
2. Press the [MENU] key followed by the E:SYSTEM CONFIGURATION, D:DATA TRANSFER, A:SAVE/LOAD DATA and C:SAVE DATA TO MEMORY CARD soft keys to show the SAVE DATA menu.

* = Plotter data only

Save data menu

1. Use the trackball to select item to save.
2. Press the A:EDIT soft key
3. Use the trackball to select ON.
4. Press the C:ENTER soft key.
5. Repeat steps 3 to 6 to choose other data to save if desired.
6. Press the B:SAVE soft key, then press the [ENTER] knob. The message "NOW SAVING DATA TO MEMORY CARD. DO NOT TURN OFF DISPLAY UNIT UNTIL COMPLETED." appears.

Memory card messages

Various memory card messages appear to alert you to memory card-related error. These are tabulated below.

Memory card messages

Message	Reason	Remedy
Memory card is not inserted. Please insert memory card. Push ENTER knob to continue.	Memory card not inserted.	Push the [ENTER] knob to return to the SAVE DATA display and then insert card.
Memory card is not formatted. Push ENTER knob to continue.	Unformatted memory card.	Push the [ENTER] knob to return to the SAVE DATA display. Format the card referring to page 6-1.
Wrong card is inserted. Please insert correct memory card. Push ENTER knob to continue.	Chart card inserted instead of memory card.	Remove chart card, insert memory card, and then push the [ENTER] knob to continue.
Overwrite data? (Track) (Mark) (WPT) (Config)	Data type to be recorded exists on memory card. (Two or more of same type of data cannot be recorded.)	Push the [ENTER] knob to overwrite same data type on the card, or press the [CLEAR] key to escape.

1. DATA TRANSFER

6.1.3 Playing back data from a memory card

Data (track, marks, lines, waypoints, routes and setting data) can be loaded from a memory card and displayed on the screen. This feature is useful for observing past data and setting up the equipment for a specific purpose with "setting data."

1. Press the [MENU] key followed by the E:SYSTEM CONFIGURATION and D:DATA TRANSFER, A:SAVE/LOAD DATA and D:LOAD DATA IN MEMORY CARD soft keys to show the LOAD DATA menu.

Load data menu

1. Use the trackball to select item to load.
2. Press the A:EDIT soft key. (The A:EDIT soft key is inoperative when no memory card is inserted or there is no data in the memory card.)

3. Use the trackball to select ON. (Select OFF to not load selected data.) Press the C:ENTER soft key. If the memory card does not contain the item selected, the unit beeps and ON cannot be selected.

4. Af...1...2...ll's...4...5...6...7...8...9...10...11...12...13...14...15...16...17...18...19...20...21...22...23...24...25...26...27...28...29...30...31...32...33...34...35...36...37...38...39...40...41...42...43...44...45...46...47...48...49...50...51...52...53...54...55...56...57...58...59...60...61...62...63...64...65...66...67...68...69...70...71...72...73...74...75...76...77...78...79...80...81...82...83...84...85...86...87...88...89...90...91...92...93...94...95...96...97...98...99...100

6.2 Receiving Data Via Network Equipment

You can receive waypoints, routes, marks and lines from NavNet equipment.

1. Press the [MENU] key.
2. Press the E:SYSTEM CONFIGURATION soft key.
3. Press the D:DATA TRANSFER soft key.
4. Press the C:RECEIVE DATA VIA NETWORK soft key.

Receive data menu

1. Select HOST NAME, then press the A:EDIT soft key.

Host name window

6. DATA TRANSFER

1. Press the B:RCV soft key followed by the [ENTER] knob.
   The message "START RECEIVING DATA VIA NETWORK." is displayed. If no data could be found, the message "(HOST NAME)" IS NOT FOUND." appears.
2. When the transfer is completed, the message "DATA TRANSFER COMPLETED. PUSH ENTER KNOB TO CONTINUE." appears. Push the [ENTER] knob to finish.
3. Press the [MENU] key to close the menu.

6.3 Outputting Data Through the Network

Follow the procedure below to output data through the network.

1. Press the [MENU] key to open the menu
2. Press the E:SYSTEM CONFIGURATION, C:SYSTEM SETUP, A:PORT SETUP and D:OUTPUT THROUGH NETWORK soft keys.

7. MAINTENANCE, TROUBLESHOOTING

This chapter provides information necessary for keeping your unit in good working order and remedying simple problems.

7.1 Preventive Maintenance

Regular maintenance is important for optimum performance. A maintenance program should be established and should at least include the items shown in the table below.

Maintenance program

Item	Check	point	Remedy
Connectors of processor unit and control unit	Check for tight connection.	Tighten loosened connectors.
Ground	Check for tight connection.	Clean covers, ground wire as

1. MAINTENANCE, TROUBLESHOOTING

7.2.2 Replacement of the fuse

The fuse on the power cable protects the equipment from reverse polarity of the ship's mains and equipment fault. If the fuse blows, find out the cause before replacing it. Use the correct fuse. Using the wrong fuse will damage the equipment and void the warranty.

M1823C-BB, M1833C-BB: 7 A for 12 V device, 3 A for 24 V device

M1933C-BB, M1943C-BB: 15 A for 12 V device, 7 A for 24 V device

M1953C-BB: 3 A for 12/24 V device

GD-1900C-BB: 3 A for 12/24 V device

CAUTION

Use the proper fuse.

Use of a wrong fuse can cause fire or damage the equipment.

7.2.3 Replacement of the magnetron

When the magnetron has expired, distant targets cannot be seen on the display. When you feel that long range performance has decreased, contact a FURUNO agent or dealer about replacement of the magnetron.

Model Magnetron type Code no.
M1823C-BB	E3588	000-146-866
M1833C-BB	E3571	000-146-867
M1933C-BB	MAF1421B	000-147-385

7.3 Trackball Maintenance

If the cursor skips or moves abnormally, you may need to clean the trackball.

1. Turn the retainer ring counterclockwise 45^ to unlock it.

Control unit

1. Remove the retainer ring and ball.
2. Clean the ball with a soft lint-free cloth, and then blow carefully into the ball-cage to dislodge dust and lint.
3. Look for a build-up of dirt on the metal rollers. If dirty, clean the rollers using a cotton swab moistened lightly with isopropyl-rubbing alcohol.
4. Make sure that fluff from the swab is not left on the rollers.
5. Replace the ball and retainer ring. Be sure the retainer ring is not inserted reversely.

Note: Trackball maintenance parts are available as below.

Part	Type	Code No.
Retainer ring and ball	MU3721	000-144-645

1. MAINTENANCE, TROUBLESHOOTING

7.4 Simple Troubleshooting

This section provides simple troubleshooting procedures which the user can follow to restore normal operation. If you cannot restore normal operation do not attempt to check inside the unit. Any trouble should be referred to a qualified technician.

7.4.1 General

General troubleshooting

If...	Then...
you cannot turn on the power	check for blown fuse.check that the power connector is firmly fastened.check for corrosion on the power cable connector.check for damaged power cable.check battery for proper voltage output (10.8 to 31.2 V).
there is no response when a key is pressed	turn off and on the power. If there still is no response the key may be faulty. Request service.

7.4.2 Radar

GD-1900C-BB requires a network radar.

Radar troubleshooting

If...	But...	Then...
you pressed the [POWER/TX] key and the D:RADAR TX soft key to show the radar picture	nothing appears on the display	check that the antenna cable is firmly fastened.check if radar source is correct.
marks, legends appear	no echo appears	check Tx fuse in power cable.

7.4.3 Plotter

Requires GPS Receiver GP-310B/GP-320B.

Plotter troubleshooting

If...	Then...
position is not fixed within three minutes	• check that antenna connector is firmly fastened.• check number of satellites received, on the GPS status display. (See page 7-11.) There should be three or more.
position is wrong	• check that the correct geodetic chart system is selected, on the GPS SENSOR SETTINGS menu.• enter position offset, on the GPS SENSOR SETTINGS menu.
the track is not plotted	• track is not being plotted. ("H" icon appears at the top of the display.)Press the B:TRACK HALT soft key on the TRACKS & MARKS CONTROL menu to start plotting again.
the bearing is wrong	• check that correct magnetic variation is entered, on the GENERAL SETUP menu.
Loran C (or Decca) TDs do not appear	• check that LORAN C (or DECCA) is selected at TD DISPLAY on the GENERAL SETUP menu. Also, check that proper Loran C (Decca) chains codes are entered, on the TD SETUP menu.
Loran C (or Decca) TDs are wrong	• enter TD offset, on the TD SETUP menu.
the ship's speed indication is not zero after the ship is stopped	• try to decrease speed/course smoothing, on the GPS SENSOR SETTINGS menu.

1. MAINTENANCE, TROUBLESHOOTING

7.4.4 Sounder

Requires Network Sounder ETR-6/10N/30N.

Sounder troubleshooting

If...	But...
you selected a sounder display with the DISP key	picture does not appear	check that the network sounder's signal cable is firmly fastened.Check that sounder source is correct.check that the network sounder is plugged in. The LED on the network sounder should flash every second.
marks and characters appear	picture does not appear	check for loosened transducer connector.
the picture appears zero line	does not appear	the picture is shifted. Confirm shift setting.
picture sensitivity is too low —		check gain setting, if using manual operation.marine life or air bubbles may be clinging to transducer face.bottom may be too soft to return a suitable echo.
the depth indication is not displayed	—	adjust gain and range to display the bottom echo (in reddish brown), if you are using the manual sounder mode.

Then...

7.5 Diagnostics

This paragraph provides the procedures for testing the equipment for proper operation. Four tests are provided: Memory I/O test, Keyboard test, Remote controller test, and Test pattern.

7.5.1 Memory I/O test

The memory I/O test provides for individual testing of the processor unit, GPS Receiver GP-310B/320B, Network Sounder ETR-6/10N, ETR-30N and ARP, displaying program number and checking for proper operation.

1. Press the [MENU] key to show the menu.
2. Press the E:SYSTEM CONFIGURATION soft key.
3. Press the C:SYSTEM SETUP soft key.
4. Press the B:TEST & CLEAR soft key.
5. Press the A:MEMORY I/O TEST soft key.

7. MAINTENANCE, TROUBLESHOOTING

Processor unit test

Press the A:PROCESSOR UNIT TEST soft key at the MEMORY I/O TEST menu to test the processor unit. The equipment displays program version number and checks devices. Results for device checks are shown as OK or NG (No Good). For any NG, request service. A test connector is required to check ports. “--” shown when no test connector is connected. Chart number shown when chart is inserted. Press the E:RETURN soft key to return the MEMORY I/O TEST menu.

^ = For FURUNO, NAVIONICS model. 1950010 XXX for C-MAP model.

No results appear when "sub" radar selected as radar source.

Program No. 1953011 XX.XX*

ROM1, 2: OK

ROM3: OK

ROM4: OK

SDRAM: OK

SRAM: OK

INT. BATTERY: OK

PORT

NMEA INOUT 1: --

NMEA INOUT 2: --

RCU: OK

HEADING: 352.2 °

NETWORK: --

CARD SLOT:

CHART NUMBER:

HEADING PULSE: OK

BEARING PULSE: OK (XX.Xrpm)

TOTAL ON TIME: 000000.0 h

TOTAL TX TIME: 000000.0 h

Machine Status +130

XX.XX* = Program Version No.

Model 1800-BB/1900-BB series

Program No. 1550311 XX.XX*

ROM1, 2 : OK

ROM3 : OK

ROM4 : OKS

SDRAM : OK

SRAM : OK

INTERNAL

BATTERY : OK

PORT

NMEA INOUT 1 : -

NMEA INOUT 2 : -

RCU : OK

HEADING : 352.2'

NETWORK : -

CHART NUMBER:

Machine Status +130

XX.XX ^* = Program Version No.

GD-1900C-BB

Processor unit test results

GPS sensor test (Requires GPS Receiver GP-310B/320B)

Press the B:GPS SENSOR TEST soft key at the MEMORY I/O TEST menu to

test the CBS Receiving CR 210B/2005. The equipment displays CBS received

Network sounder test (Requires Network Sounder ETR-6/10N, ETR-30N)

Press the C:NETWORK SOUNDER TEST soft key at the MEMORY I/O TEST menu to test the Network Sounder ETR-6/10N or ETR-30N. The equipment displays network sounder program version number, checks the ROM and RAM, and displays water temperature (appropriate sensor required) and depth. The results of the ROM and RAM check are shown as OK or NG (No Good). For any NG, request service. Press the E:RETURN soft key to return to the MEMORY I/O TEST menu.

Network sounder test results

ARP test (Requires ARP pcb in Model 1800-BB/1900-BB series network radar)

The ARP test is mainly provided for the service technician. Press the D:ARP TEST soft key at the MEMORY I/O TEST menu to test the ARP. The results of the ROM and RAM check are shown as OK or NG (No Good). For any NG, request service. Press the E:RETURN soft key to return the MEMORY I/O TEST menu.

1. MAINTENANCE, TROUBLESHOOTING

7.5.2 Test pattern

The test pattern test checks the display for proper display of colors.

1. Press the [MENU] key to show the menu.
2. Press the E:SYSTEM CONFIGURATION soft key.
3. Press the C:SYSTEM SETUP soft key.
4. Press the B:TEST & CLEAR soft key.
5. Press the C:TEST PATTERN soft key to show the test pattern.
6. Push the [ENTER] knob consecutively to show white, red, green, blue and black colors individually.
7. Press the E:RETURN soft key.
8. Press the [MENU] key to close the menu.

graph TD
    A["BLACK"] --> B["BLUE"]
    B --> C["GREEN"]
    C --> D["RED"]
    D --> E["RETURN"]
    E --> F["WHITE PUSH ENTER KNOB TO CHANGE PATTERN."]
    F --> G["[ENTER"] knob]
    G --> H["WHT"]
    H --> I["[ENTER"] knob]
    I --> J["RED"]

7.5.3 Keyboard test of the control unit

The keyboard test checks the controls on the control unit for proper operation.

1. Press the [MENU] key to show the menu.
2. Press the E:SYSTEM CONFIGURATION soft key.
3. Press the C:SYSTEM SETUP soft key.
4. Press the B:TEST & CLEAR soft key.
5. Press the B:KEYBOARD & REMOTE TEST soft key.

Screen for testing keyboard, remote controller

1. Operate each control on the keyboard one by one. A key is functioning properly if its on-screen location "fills" in black when the key is pressed. For the [ENTER] knob and trackball, rotate them to show their X-Y positions digitally. and push the ENTER1 knob to confirm its function. Their ranges are

7. MAINTENANCE, TROUBLESHOOTING

7.6 GPS Status Display

The GPS status display provides data about the GPS satellites. It is available with connection of the GPS Receiver GP-310B/320B or a GPS navigator outputting the data sentence GSA or GSV.

1. Press the [MENU] key.
2. Press the E:SYSTEM CONFIGURATION, B:NAV OPTION and B:GPS SENSOR SETTINGS soft keys to display the GPS SENSOR SETTINGS menu.
3. Press the B:GPS STATUS soft key.

GPS status display

1. Press the E:RETURN soft key to quit the GPS status display.

7.7 Clearing Memories

Your equipment has a memory for each of the plotter, radar and sounder sections. These memories can be cleared to restart operation with default settings.

The following data are not cleared: Radar; Heading adjustment, timing adjustment, MBS level, tuning point, tuning indication (short, medium, long), video level, dead sector, antenna height, STC curve, antenna type, on time, tx time, Sounder; White marker, hue, signal level, TLL output, depth calibration, range.

1. Press the [MENU] key to open the menu.
2. Press the E:SYSTEM CONFIGURATION soft key.
3. Press the C:SYSTEM SETUP soft key.
4. Press the B:TEST & CLEAR soft key.
5. Press the D:MEMORY CLEAR soft key.

Memory clear menu

1. Use the trackball to choose the memory to clear.

2. Press the A:EDIT soft kev.

3. MAINTENANCE, TROUBLESHOOTING

7.8 Error Messages

In addition to alarm messages your equipment also displays error messages.

Error messages

Error Message Meaning Remedy
Connection with the ETR was cut.	Network sounder disconnected.	· Check that processor unit where the sounder is connected is turned on. · Check network sounder's cabling.
Connection with the RADAR was cut.	Radar disconnected.	· Check that processor unit where the radar is connected is turned on. · Check antenna cable.
Low Voltage! Internal Battery	Voltage of battery on circuit board in processor unit is low.	Have a qualified technician replace the battery.
No bearing pulse detected.	No bearing pulse from radar antenna.	Check antenna cable.
No GPS fix!	GPS navigator is turned off or no GPS position data.	There may be obstacles around GPS antenna.
No position data.	An error may occur on GP-310B/320B.	Disconnect GPS cable from the processor unit, and then contact your dealer.
No heading pulse detected.	No heading pulse	Check heading sensor.
HEADING DATA MISSING!		Check heading cable.
Connection with the control unit was cut	Control unit disconnected.	Check the cable connection between the processor unit and control unit.

APPENDIX

Menu Overview

MENU key

Radar

APPENDIX

E:SYSTEM

CONFIGURATION

A:GENERAL

SETUP

[Non-Text]

Page 1

[Non-Text]

[Non-Text]

[Non-Text]

[Non-Text]

[Non-Text]

Page 8

Page 2

[Non-Text]

[Non-Text]

[Non-Text]

[Non-Text]

[Non-Text]

[Non-Text]

[Non-Text]

[Non-Text]

[Non-Text]

[Non-Text]

[Non-Text]

[Non-Text]

NAV

OPTION

[Non-Text]

[Non-Text]

[Non-Text]

[Non-Text]

[Non-Text]

[Non-Text]

[Non-Text]

[Non-Text]

- KEY BEEP (ON, OFF)

- LANGUAGE (ENGLISH, OTHERS)

- RANGE UNIT

(nm, kt; km, km/h; sm, mph; nm&yd, kt; nm&m, kt; km&m, km/h; sm&yd, mph)

- TEMPERATURE UNIT (°C, °F)

- DEPTH UNIT (m, ft, fa, pb)

- TEMPERATURE SOURCE (ETR, NMEA)

- DEPTH SOURCE (ETR, NM)

- RESET TRIP LOG (YES, NO)

- SPEED SOURCE (ETR, NMEA)

- LAT/LON DISPLAY

(DD° MM. MM

DD ^c MM. MMM

DD MM. MMMM

DD ^a MM ^b SS.S ^c )

- TD DISPLAY (LORAN C, DECCA)

- SPEED (SOG, STW)

- POSITION DISPLAY (LATILON, TD)

- TIME DISPLAY (12 HOURS, 24 HOURS)

- RANGE & BEARING MODE

- (GREAT CIRCLE, RHUMB LINE)

BEARING READOUT (TRUE, MAGNETIC)

- MAGNETIC VARIATION (AUTO 07.0°W, MANUAL)

-A:NAV

SOURCE

SETTINGS

1

1

1

-B:GPS

SENSOR

SETTINGS

[Non-Text]

POSITION SOURCE

(FURUNO BB GPS, GP, LC, ALL)

SPEED AVERAGING (0-9999 seconds, 60 seconds)

LOCAL TIME OFFSET (-13:30-+13:30 hr, 00:00)

TEMP CALIBRATION (-40°F - +40°F, 0°F)

DEPTH CALIBRATION (-15 - +90 ft. 0 ft)

LOCAL TIME OFFSET (-13:30-+13:30, 00:00)

GEODETIC DATUM (WGS-84, OTHERS: See page AP-10.)

POSITION SMOOTHING (0 - 999 seconds, 0 seconds)

SPD/CSF SMOOTHING (0 - 999 seconds 5 seconds)

APPENDIX

2

C:SYSTEM SETUP

A:PORT SETUP

A:GPS/NMEA PORT

FURUNO GPS SENSOR

(YES, NO)

OUTPUT FORMAT

(NMEA 0183 Ver.1.5, 2.0)

LAT/LON FORMAT

(DD° MM. MM'

DD° MM. MMM

DD° MM. MMMM)

OUTPUT DESTINATION

(YES, NO)

B:SELECT SNTNC soft key*

— B:NMEA PORT

FURUNO GPS SENSOR

(YES, NO)

OUTPUT FORMAT

(NMEA 0183 Ver.1.5, 2.0)

LAT/LON FORMAT

(DD ^e MM, MM ^f )

DD° MM. MMM

DD° MM. MMMM)

OUTPUT DESTINATION

(YES, NO)

B:SELECT SNTNC soft key*

D: OUTPUT THROUGH NETWORK

(Select data sentences to output to NavNet equipment.

See * below. All sentences turned off in default setting.)

^* = AAM, APB, BOD, BWR(BWC)#1, DPT(DBT)#2, GGA, GLL, GTD,

APPENDIX
④
③

* = Requires GPS Receiver GP-310B/GP-320B.
** = Requires Network Sounder ETR-6/10N/ETR-30N.
*** = Requires ARP-equipped Model 1800/1900-BB series network radar.

D:DATA-

TRANSFER

A:SAVE/LOAD

DATA

C:SAVE DATA TO MEMORY CARD

/TRACKS MARKS & LINES WAYPOINTS & ROUTES

APPENDIX

Plotter

MENU Key	A:CHART SETUP	A:CHART OFFSET (offsets chart position.)
		B:TRACKS OWN SHIP TRACK DISP (ON, OFF) & MARKS CONTROL OWN SHIP TRACK COLOR (RED, YELLOW, GREEN, LIGHT BLUE, PURPLE, BLUE, WHITE) TARGET TRACK DISPLAY (ON, OFF) TARGET TRACK COLOR (RED, YELLOW, GREEN, LIGHT BLUE, PURPLE, BLUE, WHITE) INTERVAL (TIME, DISTANCE) TIME INTERVAL (0 - 99m59s,10 seconds) DISTANCE INTERVAL (0 - 99.99nm/km/sm, 0.1 nm) MEMORY (TRACK & MARK) (0 - 8000 points, 2000 points) B:TRACK soft key (RESUME, HALT) C:ERASE T & M soft key ERASE ALL TRACKS ERASE TRACKS BY AREA ERASE TRACKS BY COLOR ERASE TARGET TRACKS ERASE ALL MARKS/LINES ERASE MARKS BY AREA D:MARK SETUP soft key MARKS/LINES COLOR (RED, YELLOW, GREEN, LIGHT BLUE, PURPLE, BLUE, WHITE) MARKS SHAPE (☐☐ ☐☒ ☑☒ ☐) LINES STYLE (☐———,......,-,-) MARKS SIZE (LARGE, SMALL)
		C:CHART LAT/LON GRID (RED, YELLOW, GREEN, LIGHT BLUE, PURPLE, BLUE, WHITE, OFF) TEXT INFORMATION (ON, OFF) NAVCharts ^T WAYPOINTS (LARGE, SMALL, OFF)

C:CHART WAYPOINT (PLOTTER/OVERLAY, PLOTTER, OFF)
DETAILSU —WAYPOINT NAME (PLOTTER/OVERLAY, PLOTTER, OFF)
(C-MAP —LAT/LON GRID (PLOTTER/OVERLAY, PLOTTER, OFF)
chart) —CHART BORDER LINE (PLOTTER/OVERLAY, PLOTTER, OFF)
—BACKGROUND (WHITE, BLACK)
Page 1
—PORTS & SERVICE (PLOTTER/OVERLAY, PLOTTER, OFF)
-ATTENTION AREA(PLOTTER/OVERLAY, PLOTTER, PLOTTER CONTOUR, OFF)
—NAV LANE (PLOTTER/OVERLAY. PLOTTER, OFF)
-LIGHT (PLOTTER/OVERLAY, PLOTTER, PLOT/NO SECTOR, OFF)
—BUOY & BEACON (PLOTTER/OVERLAY, PLOTTER, OFF
—SIGNAL (PLOTTER/OVERLAY, PLOTTER, OFF)
—CARTOGRAPHIC OBJECT (PLOTTER/OVERLAY, PLOTTER, OFF)
Page 2
—PLACE NAME (PLOTTER/OVERLAY, PLOTTER, OFF)
—COMPASS (PLOTTER/OVERLAY, PLOTTER, OFF)
-TIDE & CURRENT (PLOTTER/OVERLAY, PLOTTER, OFF)
—NATURAL FEATURE (PLOTTER/OVERLAY, PLOTTER, OFF)
—RIVER & LAKE (PLOTTER/OVERLAY, PLOTTER, OFF)
—CULTURAL FEATURE (PLOTTER/OVERLAY. PLOTTER, OFF)
—LANDMARK (PLOTTER/OVERLAY, PLOTTER, OFF)
—CHART GENERATION (PLOTTER/OVERLAY, PLOTTER, OFF)
—NEW OBJECT (PLOTTER/OVERLAY, PLOTTER, OFF)
—COMPLEX OBJECT ICON (MULTIPLE, SINGLE)
-INFORMATION LEVEL (BASIC, DETAILED)
- B: DEPTH INFO soft key
BATHYMETRIC LINE
(PLOTTER/OVERLAY, PLOTTER, OFF)
SPOT SOUNDING
(PLOTTER/OVERLAY, PLOTTER, OFF)
BOTTOM TYPE
(PLOTTER/OVERLAY, PLOTTER, OFF)
CONTOUR SHADING (0 - 99999 ft, 20-164 ft)
SPOT SOUNDING RANGE (0 - 99999 ft, 0-33 ft)

APPENDIX

3

graph TD
    A["C:WAYPOINTS/ ROUTES"] --> B["A:WAYPOINTS"]
    B --> C["A:LOCAL LIST"]
    B --> D["B:ALPHANUMERIC LIST"]
    B --> E["C:WAYPOINT BY CURSOR"]
    B --> F["D:WAYPOINT BY RNG & BRG"]
    C --> G["A:GOTO"]
    C --> H["B:NEW WPT"]
    C --> I["C:EDIT WPT"]
    C --> J["D:ERASE WPT"]
    C --> K["D:NEW WPT"]
    C --> L["C:NEW WPT"]
    C --> M["D:START POINT"]
    N["B:ROUTES"] --> O["A:GOTO"]
    N --> P["B:NEW ROUTE"]
    N --> Q["C:EDIT ROUTE"]
    N --> R["D:ERASE ROUTE"]
    S["C:LOG Destination is required."] --> T["A:RESTART"]
    S --> U["B:STOP or RELEASE"]
    S --> V["C:RVRSE or FORWARD"]
    S --> W["D:SPEED (Speed for ETA, 0-99 kt, GPS or manual input)"]
    S --> X["E:COORD TYPE"]
    Y["D:CREATE VOYAGE-BASED ROUTE"] --> Z["A:NEW (BCKTRK TIME, BCKTRK DIST, MANUAL)"]
    Y --> AA["B:SELECT ROUTE"]
    AB["D:FUNCTION KEY SETUP*"] --> AC["SOFT KEY 1 - SOFT KEY 5 (OFF, ADD NEW WPT, MOVE WPT, RULER, GOTO WPT, GOTO ROUTE, EDIT MK/LINE, TRACK ON/OFF, TTM ON/OFF, DEL TGT TRK, ALPHA LIST, LOCAL LIST, ROUTE LIST, D. BOX ON/OFF, CHANGE CNTRL)"]

APPENDIX

Sounder

MENU Key	A:SOUNDER	NOISE LIMITER (OFF, LOW, MEDIUM, HIGH)
	MENU	-CLUTTER (0-16, 05 AUTO)
		-WHITE MARKER (1-8 (8-color), 1-16 (16 color), OFF)
		-ZOOM MARKER (ON, OFF)
		-HUE (1-9, 1)
		-SIGNAL LEVEL (OFF, SL1-SL3, 8 color, monochrome, SL1-SL6, 16 color)
		-PICTURE ADVANCE (2/1, 1/1, 1/2, 1/4, 1/8, 1/16, STOP)
		-TEMPERATURE GRAPH (ON, OFF)
		-PRR LEVEL (0-20, SPD SENSING PRR, 20)
		-B:D. BOX soft key (Same items as on plotter menu. See page AP-2.)
	B:SOUNDER	FISH ALARM LEVEL (HIGH, MEDIUM, LOW)
	SYSTEM	TRANSMISSION (OFF, ON)
	SETUP	-TVG-HF (0 - 9, 0)	When ETR-30N is connected
		-TVG-LF (0 - 9, 0)	STC-HF(0-10, 0)
		-ECHO OFFSET-HF (-50 - +50, 0)	-STC-LF (0-10, 0)
		-ECHO OFFSET-LF (-50 - +50, 0)	-FREQ. ADJ.-HF (-10.0-+10.0, 0)
		-BOTTOM LEVEL-HF (-100 - +100, 0)	-FREQ. ADJ.-LF (-10.0-+10.0, 0)
		-BOTTOM LEVEL-LF (-100 - +100, 0)	-TARGET ECHO (NORMAL, SURFACE)
		-KP PULSE (INTERNAL, EXTERNAL)
		-SMOOTHING (OFF, SM1, SM2, SM3, SM4)
		-TLL OUTPUT (ON, OFF)
		-B:SENSOR SETUP soft key
		-SPEED CALIBRATION (-50 - +50%, 0%)
		-TEMP. CALIBRATION (-40°F - +40°F, 0°F)
		-DEPTH CALIBRATION (-15 - +90 ft, 0 ft)
		-ACSTC SPD CALIBRATION (-500 - +500m/s, 0 m/s)
	C:SOUNDER	RANGE 1 - RANGE 8*
	RANGE	-ZOOM RANGE (2-120 m, 10 m; 7-400 ft, 30 ft; 1-60 fa, 10 fa; 1-70 P/B, 10 P/B)
	SETUP	-BOTTOM LOCK RANGE (3 m, 6 m; 10 ft, 20 ft; 2 fa, 3 fa; 3 fa; 2 P/B, 3 P/B; 3 P/B)

APPENDIX

EXT VIDEO

MENU Key-E:SYSTEM CONFIGURATION —— (Same items as on page AP-2.)

ALARM key

Radar Alarms

ALARM key A: SET GUARD 1 (ERASE GUARD 1) C: SET GUARD 2 (ERASE GUARD 2)

Plotter Alarms

ALARM key AUDIO ALARM (INT & EXT BUZZ, INTERNAL BUZZ, OFF) ARRIVAL ALARM (ON, OFF, default range: 0.010 nm(km/sm)) ANCHOR WATCH ALARM (ON, OFF, default range: 0.010 nm(km/sm)) PROXIMITY ALARM (ON, OFF) XTE ALARM (ON, OFF, default range: 0.050 nm(km/sm)) SPEED ALARM (WITHIN, UNDER/OVER, OFF) TRIP ALARM (ON, OFF) BOTTOM ALARM (ON, OFF) TEMPERATURE ALARM (WITHIN RANGE, OUT OF RANGE, OFF) B:NEXT INFO soft key (Shows which alarms have been violated when more than two alarms are violated.)

APPENDIX

Geodetic Chart List

001:WGS84

003: TOKYO : Mean Value (Japan, Korea, and Okinawa)

004: NORTH AMERICAN 1927 : Mean Value (CONUS)

005: EUROPEAN 1960 : Mean Value

006: AUSTRALIAN GEODETIC 1991; Australia and Tasmania, Island 007: ADINDAN - Mass. Value (Ethiopia and Suriname)

008: Ethiopia

1. : 10000 000: : Mail

010: Senegal

011: : Sudan

012 AFG: Somalia

013: AIN EL ABD 1970 : Bahrain Island

014: ANNA 1 ASTRO 1965 : Coco Island

015: ARC 1960: Mean Value

016 : Bolsaws

017: Lesotho

01B: :Malawi

019:Swazland

02D : Zaire

021: : Zambia

022 : Zinbun

023: AHC 1960 : Mean Value (Kenya, Tanzania)

024: Kenya 005: Toronto

(25) : Tanzania

1. ASCENSION ISLAND 1956: ABBREED ISLAND
2. ASTRO BEASCONUTCHEN, FAW BHAJI

(2): ASTROBEALON E. (ADJINTS) BATH (3): ASTROBEALON, ATCHU, Toro Injanel

028 ASTRO B4 SCR AIOLE: Tarrisiano 039 ASTRO BDC 71/4 - St. Helena Island

(29) ASTROPOSS 114. S. HEENS BANK (30) ASTRONOMIC STATION 1962: Mar

031: AUSTRALIAN GEODETIC 1986; Aurinia and Tannasia Island

1. AUSTRALIAN GEOBETIC 1967, Australia and
2. BUL EULIGM: Plato and Emprapan Islands

033: BERMIDA 1957: Bergu du Idaho

034: BOGOTA OBSERVATORY : Columbia

035 CAMPOINCHAIUSPE: America

036: CANTON ISLAND 1986: Phoenix Islands

037: CAPE : South Africa

038: CAPE CANAVERAL : Mean Value (Florida and Bahama Islands)

039: CARTHAGE: Turlek

040: CHATHAM 1971 : Chatham Island (New Zealand)

041: CHUA ASTRO : Paraguay

042 CORREGO ALEGRE : Brz

013: DJAKARTA (BATAVIA) : Sumatra Island (Indonesia)

044: DOS 1988 : Giao Island (New Georgia Island)

015: EASTER ISLAND 1967: Easter Island

048: EUROPEAN 1950 (Conf'd) : Western Europe

047: : Cyprus

048: : Egypt

049: England, Scotland, Channel, and Shetland Islands

050: : England, Ireland, Scotland, and Shetland Islands

(51): Greece

052 : Iran

(253) : Italy Sardinia

054: Italy Sicily

(25) Norway and Finland

056: Portugal and Spain 057: EUROPEAN 1970

(25): EUROPEAN 1979: MESH VALUE (26): GONDA IKA BASE : Dey triq at

(28) 政州及IRA NASP - 40101143915

089: NORTH AMERICAN 1927 : Western United States

089: Eastern United States

090: Alaska

091: :Bahamas (Excluding San Salvador Island)

092: Bahamas San Salvador Island

093: : Canada (including Newfoundland Island)

094: : Alberta and British Columbia

095: : East Canada

098: Manitoba and Ontario

09/ : Northwest Territories and Saskatchewan

09E: : YUKAN

057: Canal Zone 478: Cornboard

1. : Caribbean 101: Central American

101: Central America 173: Ote

102

1. . GREENLAND 154: . HUDE

2. MEASO

3. NORTHAMER

4. NORTH AMERICAN 1987, Alaska 106: Canada

107: CONUS

108: Mexico

109 OBSERVATORIO 1966: C

110: OLD EGYPTIAN 1930: Egypt

111: OLD HAWAIIAN: Mean Value

112:Hawaii

113: : Keuel

114: Mui

115: Oshu

116:OMAN:Oman

117: ORDNANCE SURVEY OF GREAT BRITAIN 1936: Mean Value

118: : England

119: : England, Isle of Men, and Wales

120: Scotland and Shetland Islands

121: :Wales

122: PICO DE LAS NIMES : Canary Islands

123: PITCAIRN ASTRO 1967 : Pitcair Island

124: PROVISIONAL SOUTH CHILEAN 1983 : South Chile (near 53° s)

125: PROVISIONAL SOUTH AMERICAN 1956 : Mean Value

125: : Bolivia

127: Chile Northern Chile (near 19 ^th s)

128: Chile Southern Chile (near 43° e)

129 : Caloña

1. : Ecuador

131: : Gydi 129: : Dm

1. POERTO RICO, Foudhoo and Virgin Islands
2. QATAR NATIONAL Order

136: OOPNOC: South Greenlan

137: BOME 1940 : Sardinia Islandia

139: SANTNA BRAZ - San Miguel Santa Maria Islands (Azores)

139 SANTO (DOS) Fenito Santo Island

140: SAPPER HILL, 1943: East Falkland Island

141 SOUTH AMERICAN 1969 Mean Value

142: Argentina

143: : Bolivia

144: : Brasil

145 · Chile

APPENDIX

World Time Chart

APPENDIX

Icons

Icon	Meaning
	North marker. Points to North.
	Correct chart and suitable scale - full chart reliability.
	Chart overenlarged.
	Chart card not inserted.Wrong chart card inserted.Chart scale too small.
	Plotter, radar, sounder alarm setting violated.
	Track is not being recorded or plotted.
	Chart offset applied.

APPENDIX

What is WAAS?

WAAS, available in North America, is a provider in the worldwide SBAS (Satellite Based Augmentation System) navigation system. SBAS provides GPS signal corrections to SBAS users, for even better position accuracy, typically better than three meters. Two more SBAS providers are also currently under development, MSAS (Multi-Functional Satellite Augmentation System) for Japan and EGNOS (Euro Geostationary Navigation Overlay Service) for Europe. All provides will be compatible with one another, thus providing "seamless" position fixes to SBAS users.

This page is intentionally left blank.

SPECIFICATIONS OF MARINE RADAR MODEL 1800C-BB/1900C-BB SERIES

1 GENERAL

1.1 Range, Pulse length (PL) & Pulse Repetition Rate (PRR)

Range (nm)	Pulse length (×s)	PRR (Hz approx.)
0.125 to 1.5	0.08 2100
1.5 to 3	0.3 1200
3 to 72*	0.8 600

*Maximum Range: M1823C-BB: 24nm, M1833C-BB: 36nm, M1933C-BB: 48nm, M1943C-BB: 64nm, M1953C-BB: 72nm

1.2 Range Resolution M1823C-BB: 15 m, Others: 15 m
1.3 Bearing Resolution M1823C-BB: 5.5°, M1833C-BB: 4.0°, M1933C-BB: 2.4°,

M1943C-BB: 1.9°,

M1953C-BB: 1.9° (XN12A), 1.2° (XN13A)

1.4 Minimum Range M1823C-BB: 27 m, Others: 35 m
1.5 Bearing Accuracy ±1°
1.6 Range Ring Accuracy 0.9 % of range or 8 m, whichever is the greater
1.7 Range, Range Ring Interval (RI), Number of Rings

Range (nm)	0.125	0.25	0.5	0.75	1	1.5	2	3	4	6	8	12	16	24	36	48	64	72
RI (nm)	0.0625	0.125	0.125	0.25	0.25	0.5	0.5	1	1	2	2	3	4	6	12	12	16	18
Rings	2	2	4	3	4	3	4	3	4	3	4	4	4	4	3	4	4	4

Maximum range: M1823C-BB: 24nm, M1833C-BB: 36nm, M1933C-BB: 48nm, M1943C-BB: 64nm, M1953C-BB:

72nm

2 ANTENNA UNIT

2.1 MODEL1823C-BB:

-23 dB or less (±20° of main-lobe or more)

2.3 MODEL1933C-BB:

2.3.1 Radiator Slotted waveguide array

2.3.2 Polarization Horizontal

2.3.3 Antenna Rotation 24 or 48 rpm nominal High brilliance monitor: 24 rpm nominal only

2.3.4 Radiator Length 100 cm (XN10A)

2.3.5 Horizontal Beamwidth 2.4°

2.3.6 Vertical Beamwidth 27°

2.3.7 Sidelobe Attenuation -20 dB or less (within ±20^ of main-lobe) -28 dB or less ( ±20^ of main-lobe or more)

2.4 MODEL1943C-BB:

2.4.1 Radiator Slotted waveguide array

2.4.2 Polarization Horizontal

2.4.3 Antenna Rotation 24 or 48 rpm nominal High brilliance monitor: 24 rpm nominal only

2.4.4 Radiator Length 120 cm (XN12A)

2.4.5 Horizontal Beamwidth 1.9°

2.4.6 Vertical Beamwidth 22°

2.4.7 Sidelobe Attenuation -24 dB or less (within ±20^ of main-lobe) -30 dB or less ( ±20^ of main-lobe or more)

2.5 MODEL1953C-BB:

2.5.1 Radiator Slotted waveguide array

2.5.2 Polarization Horizontal

3.3 Modulator FET Switching Method
3.4 Intermediate Frequency 60 MHz
3.5 Tuning Automatic or manual
3.6 Receiver Front End MIC (Microwave IC)
3.7 Bandwidth Tx pulselength 0.08 ∝s and 0.3 ∝s: 25 MHz

Tx pulselength 0.8 ∝s: 3 MHz

3.8 Duplexer Circulator with diode limiter
3.9 Warming up 90 s approx.

4 INTERFACE

4.1 Input Data IEC 61162-1 (NMEA 0183 Ver1.5/2.0)

Own ship's position: GGA>RMC>RMA>GLL

Ship's speed: RMC>RMA>VTG>VHW

Bearing (True): HDT>HDG ^1 >HDM ^1 >VHW

Bearing (Magnetic): HDM>HDG ^1 >HDT ^1 >VHW

Course: RMC>RMA>VTG

Water depth: DPT>DBT>DBS>DBK

Wind: MWV>VWT>VWR

Water Temperature: MTW

Time: ZDA

^*1 : calculated by magnetic deviation

4.2 Output Data

Alarm signal 12 VDC, 100 mA or less

NMEA 0183 Ver1.5 GGA, GLL, RMA, RMC, GTD, VTG, ZDA (GPS data required)

5.9 Electronic Chart FURUNO chart card or NAVIONICS chart card available C-MAP chart card also available for C-MAP NT Model
5.10 Alarms Arrival and Anchor watch, Cross track error and proximity alarms, Ship's speed in and out alarms, Water temperature, Trip alarm, Fish alarm, Bottom alarm (ETR required)

6 POWER SUPPLY

6.1 Rated Voltage/Current

M1823C-BB 12-24 VDC: 3.6-1.9 A

M1833C-BB 12-24 VDC: 5.0-2.4 A

M1933C-BB (24rpm) 12-24 VDC: 5.3-2.6 A

M1933C-BB (48rpm) 12-24 VDC: 6.7-3.2 A

M1943C-BB (24rpm) 12-24 VDC: 6.0-2.9 A

M1943C-BB (48rpm) 12-24 VDC: 7.7-3.6 A

M1953C-BB (24rpm, XN12 A) 12-24 VDC: 7.3-3.5 A

M1953C-BB (48rpm, XN12 A) 12-24 VDC: 8.8-4.1 A

M1953C-BB (24rpm, XN13 A) 12-24 VDC: 7.4-3.6 A

6.2 Rectifier (option) 100-115/220-230 VAC, 1 phase, 50/60 Hz

7 ENVIRONMENTAL CONDITION

7.1 Ambient Temperature Antenna Unit: -25°C to +70°C

Processor Unit and Control Unit: -15^ to +55^

Remote Controller: +5°C to +45°C

Power Supply Unit: -15°C to +55°C

SPECIFICATIONS OF VIDEO PLOTTER GD-1900C-BB

1 PLOTTER FUNCTION

1.1 Projection Mercator

1.4 Effective Projection Area 0.125 nm to 1,024 nm (at equatorial area)

1.5 Track Display Plot interval: by time (1 sec. to 99 min. 59 sec.) or by distance (0 to 99.9 nm)

1.6 Colors Red, yellow, green purple, light-blue, blue, white

1.7 Memory Capacity Track/mark: 8000 points, Waypoint: 999 points, Route: 200 routes with 35 waypoints each

1.8 MOB 1 point

1.9 Electronic Chart FURUNO chart card or NAVIONICS chart card available C-MAP chart card also available for C-MAP NT Model

1.10 Alarms Arrival and Anchor watch, Cross track error and proximity alarms, Ship's speed in and out alarms, Water temperature, Trip alarm, Fish alarm, Bottom alarm (ETR required)

2 INTERFACE

2.1 Input Data IEC 61162-1 (NMEA 0183 Ver1.5/2.0)

Own ship's position: GGA>RMC>RMA>GLL

Ship's speed: RMC>RMA>VTG>VHW

Bearing (True): HDT>HDG ^1 >HDM ^1 >VHW

Roaring (Magnetic): UDM, UDC ^1 , UDT ^1 , VUW

3.2 Rectifier (option) PR-62: 100/110/220/230 VAC, 1 phase, 50/60 Hz

4 ENVIRONMENTAL CONDITION

4.1 Ambient Temperature -15°C to +55°C

4.2 Relative Humidity 93% ±2% at +40°C

4.3 Waterproofing Processor Unit: IPX0

Control Unit: IPX5 (Front panel), IPX2 (Rear panel)

4.4 Bearing Vibration IEC 60945-4 ^th

5 COATING COLOR

5.1 Processor & Control Unit N3.0

INDEX

A

A/C RAIN....2-5

A/C SEA....2-4

ACQ soft key....2-36

ALARM key

plotter 3-52

radar 2-29

sounder 4-20

Alarms

anchor watch 3-54

arrival....3-53

audio....3-52

bottom 4-21

CPA/TCPA 2-42

fish....4-21

fish(B/L)....4-22

guard 2-29

heading missing data 2-8

lost target....2-43

messages (plotter)....3-59

messages (sounder) 4-25

proximity....3-56

speed....3-55

trip....3-57

water temperature....4-23

Auto course-up mode 3-8

AUTO S.SPD soft key 2-20

AUTO/D. BOX soft key 4-9

B

Battery replacement 7-1

Bearing measurement by EBL.... 2-14

Bottom alarm.... 4-21

Bottom discrimination display.... 4-7

Bottom echo....4-27

Bottom-lock display 4-6

Bottom-zoom display 4-5

C

CENTER soft key 3-9

CHART DETAILS menu.... 5-13

CHART OFFSET soft key 5-12

Charts

C-MAP chart attributes 5-15

cursor and data display (C-MAP) 3-14

data for aids to navigation.... 3-12

FURUNO chart attributes.... 5-14

icon data (C-MAP).... 3-15

icons 3-10

indices....3-11

INDEX

Colors

radar display....5-5

radar echoes....5-5

sounder echoes 4-19

Compass display 3-3

Controls

control unit....1-2

Course-up mode

plotter 3-8

radar....2-9

CPA/TCPA alarm....2-42

Cursor

display format 5-4

shifting....1-11

CURSOR soft key....2-18

D

Data boxes

erasing....1-14

hiding....1-13

rearranging 1-14

setup 5-18

showing 1-13

DEPTH INFO soft key....5-17

Depth measurement 4-12

Depth source 5-2

Depth unit....5-2

Diagnostics

ARP test 7-9

Echo stretch....2-26

Echo trails

color....2-25

mode....2-25

starting....2-24

time....2-23

EDIT XT-LMT soft key 3-4, 3-5

Error messages....7-14

ETA calculation....3-50

F

Fish alarm

sensitivity 5-29

setting....4-21

Fish alarm (B/L)

sensitivity 5-28

setting....4-22

Fish school echo 4-28

Fix mode (GPS Receiver GP-310B).....5-24

Formatting memory cards.... 6-1

FREQ LF/HF soft key 4-3

Function keys

function execution 1-15

setup (plotter)......5-10

setup (radar)...... 5-7

setup (sounder) 5-32

Fuse replacement.... 7-2

G

GAIN key

INDEX

Hot page setup 5-19

Hue radar, plotter....1-6 sounder....4-19

I I. REJ. soft key....2-17 Icons....AP-12 Interference rejection radar....2-17 sounder....4-13

K Keyboard test....7-11 Keying pulse....5-29

L Language....5-2 Latitude, longitude display....5-2 Lines entering....3-25 erasing....3-27 type....3-26

LOAD DATA menu 6-4 Local time GPS Receiver GP-310B....5-22 navigator (GPS, Loran C)....5-21 Lost target alarm....2-43

M Magnetic variation....5-3

Memory cards error messages....6-3 formatting....6-1 playing back....6-4 saving data to....6-2

Memory I/O test....7-7 Menu tree....AP-1

Messages memory cards....6-3 plotter alarms....3-59 sounder alarms....4-25 MOB mark....1-12 Multiple echoes (radar)....2-46

N Nav data display.... 3-6 NAV DATA menu.... 5-28 Nav data source.... 5-21 Nav data window.... 3-2 NAV OPTION menu.... 5-21

Navigation canceling route navigation....3-51 port, port services....3-46 quick point....3-44 restarting....3-49 routes....3-48 switching waypoints in a route....3-50 waypoints....3-45 Navigator setup....5-21, 5-22

INDEX

Port, port services

icons....3-13

navigating to....3-46

Position offset (GPS Receiver GP-310B).....5-23

Position smoothing (GPS Receiver

GP-310B) 5-23

POWER/TX key....1-5, 1-6

Presentation mode

plotter 3-7

radar....2-8

Proximity alarm....3-56

Pulselength (radar) 2-7

R

Racon....2-50

RADAR SETTING menu....5-3

RADAR TX/ST-BY soft key....2-2

Range

measurement by cursor (radar) ......2-12

measurement by range rings (radar) ..... 2-11

measurement by VRM (radar)....2-13

plotter 3-9

radar....2-6

setup (radar) 5-6

setup (sounder)......5-31

unit of measurement 5-2

RANGE key

plotter 3-9

radar....2-6

SAVE/MOB key....1-12

Second-track echoes (radar) 2-32

Sensor setup....5-29

SENSOR SETUP menu....5-30

SENSOR SETUP soft key 5-29

Shadow sectors....2-47

Shift

automatic (radar)......2-20

manual (radar)......2-19

sounder....4-11

SHIFT soft key....2-19, 4-11

Sidelobe echoes....2-46

Signal level erasure (sounder)....4-15

SIM SETUP menu....1-16

Simulation display 1-16

Smoothing echoes (sounder)....5-29

SNDR CNTRL soft key 1-9

Soft keys.... 1-3

Speed alarm....3-55

Speed averaging

GPS Receiver GP-310B)....5-23

navigator (GPS, Loran C)....5-21

Speed display 5-2

Speed/course smoothing (GPS Receiver

GP-310B)....5-23

SPLIT soft key 4-8

System configuration....x

SYSTEM SETUP menu (sounder) .....5-28

-

INDEX

Track

displaying other targets'....3-19

displaying own ship's....3-18

erasing all own ship's....3-24

erasing all targets'....3-24

erasing own ship's by area....3-23

erasing own ship's by color 3-24

memory distribution setting....3-22

plotting interval....3-21

plotting method 3-21

plotting of own ship's....3-19

TRACK HALT soft key....3-19

TRACK RESUME soft key 3-19

Trackball

cleaning....7-2

operation.... 1-11

TRAIL COLOR soft key....2-25

TRAIL ON/OFF soft key 2-24

TRAIL soft key 2-23

TRAIL TIME soft key....2-23

Trip alarm 3-57

Trip distance resetting....3-60

Troubleshooting

general 7-4

plotter 7-5

radar....7-4

sounder 7-6

True motion mode....2-10

Tuning 2-2

W

WAAS 5-25

W. MAN soft key.... 2-31

Watchman.... 2-31

Water temperature alarm.... 4-23

Water temperature graph.... 4-25

Water temperature unit.... 5-2

Waypoint marker (radar).... 2-33

Waypoints

changing size 3-34

color 3-29

editing from waypoint list.... 3-31

editing waypoint position.... 3-32

editing with cursor.... 3-31

entering at own ship position.... 3-28

entering by range and bearing 3-30

entering with cursor.... 3-28

erasing from the menu.... 3-33

erasing from waypoint list 3-33

erasing with cursor 3-33

navigating to.... 3-45

searching 3-35

shape 3-29

switching in route navigation.... 3-50

White marker.... 4-16

World time chart ......AP-13

WPT MK soft key 2-33

x

FURUNO ELECTRIC CO., LTD.

9-52 Ashihara-Cho, Nishinomiya City, 662-8580, Hyogo, Japan

Tel: [phone] Fax: [phone]

Pub NO. DOC-619

Declaration of Conformity

0560

We

FURUNO ELECTRIC CO., LTD.

(Manufacturer)

9-52 Ashihara-Cho, Nishinomiya City, 662-8580, Hyogo, Japan

(Address)

declare under our sole responsibility that the product

Marine radars Model 1823C and Model 1823C-BB

(Model name, serial number)

are in conformity with the essential requirements as described in the Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment (R&TTE Directive) and satisfies all the technical regulations applicable to the product within this Directive

EN 60945: 1997-01 (IEC 60945 Third edition: 1996-11)

EN 60945: 2002 (IEC 60945 Fourth edition: 2002-08)

EN 60950: 2000 (IEC 60950 Third edition: 1999-04)

KSR 142: 1985-10, Annex 1

ITU Radio Regulations App. S3: 1998, Appendix S3, table 2

(title and/or number and date of issue of the standard(s) or other normative document(s))

FURUNO®

FURUNO ELECTRIC CO., LTD.

9-52 Ashihara-Cho, Nishinomiya City, 662-8580, Hyogo, Japan

Tel: [phone] Fax: [phone]

Pub NO. DOC-621

Declaration of Conformity

€ 0560

We

FURUNO ELECTRIC CO., LTD.

(Manufacturer)

9-52 Ashihara-Cho, Nishinomiya City, 662-8580, Hyogo, Japan

(Address)

declare under our sole responsibility that the product

10.4" colour LCD radars Models 1833C (ø602 mm radome, 4 kW, 24 rpm), 1933C (1035 mm open, 4 kW, 24/48 rpm) and 1943C (1255 mm open, 6 kW, 24/48 rpm) and their display/control/processor-independent Black-Box type models 1833C-BB, 1933C-BB and 1943C-BB respectively with optional GPS receiver GP-310B; the LCD is available in two versions: brightness level 300 cd/m² or 700 cd/m²

(Model name, type number(s))

are in conformity with the essential requirements as described in the Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment (R&TTE Directive) and satisfies all the technical regulations applicable to the product within this Directive

EN 60945: 1997-01 (IEC 60945 Third edition: 1996-11)

EN 60945: 2002 (IEC 60945 Fourth edition: 2002-08)

EN 60950: 2000 (IEC 60950 Third edition: 1999-04)

KSR 142: 1985-10. Annex 1

FURUNO®

FURUNO ELECTRIC CO., LTD.

9-52 Ashihara-Cho, Nishinomiya City, 662-8580, Hyogo, Japan

Tel: [phone] Fax: [phone]

Pub NO. DOC-620

Declaration of Conformity

0560

We

FURUNO ELECTRIC CO., LTD.

(Manufacturer)

9-52 Ashihara-Cho, Nishinomiya City, 662-8580, Hyogo, Japan

(Address)

declare under our sole responsibility that the product

Marine radars Model 1953C and Model 1953C-BB

(Model name, serial number)

are in conformity with the essential requirements as described in the Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment (R&TTE Directive) and satisfies all the technical regulations applicable to the product within this Directive

EN 60945: 1997-01 (IEC 60945 Third edition: 1996-11)

EN 60945: 2002 (IEC 60945 Fourth edition: 2002-08)

EN 60950: 2000 (IEC 60950 Third edition: 1999-04)

KSR 142: 1985-10, Annex 1

ITU Radio Regulations App. S3: 1998, Appendix S3, table 2

(title and/or number and date of issue of the standard(s) or other normative document(s))