LT 15 - Multimeter PCE Instruments - Free user manual and instructions

Product Type	Digital Multimeter with LAN Cable Tester
Display	4000-count LCD
AC Voltage Ranges	400mV, 4V, 40V, 400V, 750V
DC Voltage Ranges	400mV, 4V, 40V, 400V, 750V
Resistance Ranges	400Ω, 4kΩ, 40kΩ, 400kΩ, 4MΩ, 40MΩ
Input Impedance	10MΩ
Continuity Test	Audible threshold <25Ω
Diode Test	Yes
Data Hold	Yes
Auto/Manual Ranging	Yes
LAN Cable Testing	RJ45/RJ11, Continuity, Open, Short, Miss-wired
Remote Unit	Included for remote cable testing
Safety Standards	EN 61010-1, EN 61326-1
Multimeter Power	2x AAA batteries
Cable Tester Power	9V battery
Dimensions (approx.)	150 x 70 x 30 mm
Weight (approx.)	200 g
Maintenance	Wipe with damp cloth; no abrasives
Storage	Remove battery if unused >60 days

Frequently Asked Questions - LT 15 PCE Instruments

How do I measure DC voltage with the PCE Instruments LT 15?

Insert the black test lead into the COM terminal and the red test lead into the + terminal. Turn the rotary switch to the V function and select DCV using the Select button. Read the voltage from the LCD display.

How do I test LAN cable continuity?

Plug one end of the cable into the RJ45 jack of the sourcing end (OUT) on the master unit and the other end into the RJ45 jack of the receiving end (IN) on the master unit. Press the Power ON/OFF button. In auto-scan mode, the LEDs will sequentially light up if continuity is good. Use the remote receiving unit for installed cables.

What does the HOLD button do?

Pressing the HOLD button freezes the current reading on the LCD display. The HOLD annunciator turns on. Press HOLD again or change the measurement mode to cancel.

How do I replace the batteries in the multimeter?

When the low battery symbol (B) appears on the LCD, replace the batteries. Open the battery compartment and insert two AAA batteries with correct polarity. Ensure the meter is turned off before replacement.

How do I perform a diode test?

Turn the rotary switch to the resistance/continuity/diode position. Press the Select button until the diode symbol appears on the LCD. Insert the black lead into COM and red lead into +. Connect the leads across the diode; the forward voltage drop (typically 0.4-0.7V for silicon) will be displayed. OL indicates open or reverse bias.

What is the input impedance of the LT 15?

The input impedance for voltage measurements is 10MΩ. This high impedance minimizes loading effects on the circuit under test.

How do I use the remote unit for LAN testing?

Plug one end of the cable into the RJ45 jack of the sourcing end (OUT) on the master unit and the other end into the remote receiving unit. Press the Test button. Read the LED indicators on the remote unit to check continuity, open, short, or miss-wired conditions.

What does the buzzer indicate during continuity test?

During continuity test, the buzzer emits a 2kHz sound when the resistance is less than 25Ω. This indicates a good connection with low resistance.

How do I switch between auto and manual range?

Press the Range button briefly (less than one second) to enter manual range mode. Each press increments the range. To return to auto range, press and hold the Range button for more than one second.

How should I clean and store the LT 15?

Wipe the case with a damp cloth and mild detergent. Do not use abrasives or solvents. Avoid getting water inside the case. If storing for more than 60 days, remove the battery to prevent leakage.

USER MANUAL LT 15 PCE Instruments

Southpoint Business Park

Ensign way

Hampshire / Southampton

United Kingdom, SO31 4RF

From outside UK: +44

Tel: [phone]

Fax: [phone]

[e-mail]

www.pce-instruments.com/english

www.pce-instruments.com

Voltmeter PCE-LT 15

INDEX PAGE

LAN CABLE TESTER

Introduction...... 1

Features.... 1

Instrument Layout.... 2

Operation.... 3-4

Test Result...... 5

DIGITAL MULTIMETER

Features...... 6

Specification.... 6-7

Instrument Layout...... 8

Button Functions.... 9

Measurement.... 10-12

Maintenance.... 13

LAN CABLE TESTER

Introduction

• The Lan cable tester is a newly designed tool that can easily test the correct pin configuration of the RJ45/RJ11 modular cables, 10/100 base-T cable and Token Ring cable etc.
• By comparing one transmitting end and the corresponding receiving end, the Lan cable tester also can test installed cable far away by using the remote receiving unit.
• The LCT provides the variety for wiring check, such as cable continuity, open status, short status and miss-wired.

Features

• Designed for RJ45/RJ11 modular cables, 10/100 base-T cable and Token Ring cable etc.
• The Lan cable tester can verify cable continuity, open, short circuit and miss-wired.
• The remote receiving unit is available for installed cables far away either on the wall plates or on the patch panels.
• Auto and manual scan function.
• Ground wire test.
• Display: LED indication for wire status.
  • EN 61010-1 EN 61326-1

Instrument Layout

(1) RJ45 jack of sourcing end (OUT).
(2) RJ45 jack of receiving end (IN).
(3) LED indicator of sourcing end.
(4) LED indicator of receiving end.
(5) LED indicator of sourcing end for ground wire test.
(6) LED indicator of receiving end for ground wire test.
(7) Power ON/OFF button.
(8) Test button.
(9) Auto-scan & Manual-scan selection button.

Operation

Loopback test

• Plug one end of the testing cable into the RJ45 jack of sourcing end (OUT) on the master unit and another end of the testing cable into the RJ45 jack of receiving end (IN) on the master unit.
• Press the "ON/OFF" button, the master unit will start a sequential scanning process if the master unit is in "auto-scanning" mode.
• Press the "ON/OFF" button, the pin1 LED lamps of the LED indicators will be alight if the master unit is in "manual-scanning" mode.

Note: When the 9V battery power is low, the testing results may not be correct. Please replace with a new 9V battery.

- You can choose an auto-scanning mode or a manual-scanning mode by pressing the "A ▲/M ▲button.

Remote test

• Plug one end of the testing cable into the RJ45 jack of sourcing end (OUT) on the master unit and another end of the testing cable into the RJ45 jack of the remote receiving unit, then make tests.
• Read the testing results from the LED indicator on the remote receiving unit.

Test Result

a. Continuity c. Short

Pin 3 is continued

1 2 3 4 5 6 7 8 GND

Pin 5 and 6 are shorted

1 2 3 4 5 6 7 8 GND

b. Open d. Miss-wired

Pin 4 is opened

1 2 3 4 5 6 7 8 GND

Pin 1 and 7 are

12345678

GND

miss-wired

DIGITAL MULTIMETER

Features

• 4000-count LCD.

• Fully automatic measurement. Voltage measurement. Resistor measurement.

• Range change function.

• Select function.
• Data Hold function.
• Continuity check.
• Diode measurement.
• Low battery indication.
• Input impedance:10MΩ.

Specification

AC Voltage

Range	Resolution	Accuracy
400mV	0.1mV	±(1%rdg + 5dgt)
4V	1mV
40V	10mV
400V	100mV
750V	1V

Input impedance: 10MΩ

DC Voltage

Range	Resolution	Accuracy
400mV	0.1mV	±(0.5%rdg + 3dgt)
4V	1mV
40V	10mV
400V	100mV
750V	1V

Input impedance: 10MΩ

Resistance

Range	Resolution	Accuracy
400Ω	0.1Ω	±(1.2%rdg + 3dgt)
4kΩ	1Ω
40kΩ	10Ω
400kΩ	100Ω
4MΩ	1kΩ
40MΩ	10kΩ	±(2.0%rdg + 4dgt)

Overload protection 500V DC

Continuity test

Range	Audible threshold
400Ω	Less than 25Ω

Instrument Layout

(10) Function rotary switch
(11) LCD
(12) Select button
(13) Range button
(14) Hold button
(15) COM terminal
(16) "+" terminal.

Button Functions

(1) Function rotary switch

The rotary switch selects the function.

(2) LCD

4000-count LCD with LOW BATTERY indication.

(3) Select Button

For AC/DC function selection.

In the resistance + continuity + diode function, press the Select button to select resistance, continuity or diode function.

(4) Range Button

Press the Range button to select the manual range mode. In manual range mode, each time press Range button (less than one second), the range increments and new value is displayed. To exit the manual range mode and return to auto mode, press the RANGE button (More than one second).

(5) HOLD Button

Press the HOLD button (HOLD annunciator turns on) makes the meter stop updating the LCD display. This mode can be nested in most of the special modes.

Enabling HOLD function in automatic mode makes the meter switch to manual mode, but the full scale range remains the same. Hold function can be cancelled by changing the measurement mode, pressing range, or push HOLD again.

(6) COM Terminal

This is the ground input terminal. Use the BLACK test lead to connect.

(7) "+" Terminal

This is positive input terminal for voltage / ohm measurement. Use the RED test lead to connect.

Measurement

(1) Voltage measurement

Insert the BLACK test lead to COM and the RED test lead to the "+" terminal.

Switch to V function for ACV or DCV

selection. Get the reading directly from the LCD.

(2) Resistance Measurement

Switch to OHM range and make sure there is no power in the circuit being measured. Insert the BLACK test lead to the COM and the RED test lead to the "+" terminal.

Connect the test leads to the circuit or device under test and get the reading directly from the LCD.

(3) Continuity Check

Continuity check shares the same configuration with 400.0Ω manual resistance measurement mode, but with buzzer output to indicate continuity. The buzzer generates a 2kHz sound whenever the digit number less than 25Ω.

Because the cycle time of measurement is only 50ms, the least significant digit will not display.

(4) Diode Measurement

Diode measurement mode shares the same configuration with 4000V manual voltage measurement mode.

If the test circuit is open or the voltage drop between the two ports of the device (diode) under test are larger than 2V, the LCD will show "OL".

The buzzer generates a 2kHz sound whenever the digit number is less than 0.25V. Because the cycle time of measurement is only 50ms, the least significant digit will not display.

Maintenance

(1) Battery replacement

- Lan cable tester: When press the "ON/OFF" button to start a test, if the LED module of pin-out indicator is too dark and can't work normally, please replace with a new 9V battery.

- Multimeter : Replace two AAA batteries

with the "B" symbol appears at the upper left hand corner of the LCD.

(2) Cleaning and Storage:

WARNING

To avoid electrical shock or damage to the meter, do not get water inside the case.

Periodically wipe the case with a damp cloth and detergent.

Do not use abrasives or solvents.

If the meter is not used for over 60 days, remove the battery for storage.