ARU104MK2 - Professional audio equipment Audac - Free user manual and instructions

Product Type	Digital Receive/Switch Module (ARU)
Model	ARU104MK2
Brand	Audac
Category	Professional Audio Paging System Component
Number of Zones	4
Relay Count	4 (for zone switching)
Signal Switching	Between background music (Input A) and paging (Input B)
Inputs	2 channels (A: music, B: paging)
Outputs	4 zone outputs (speaker level)
Communication Protocol	RS-485 via CAT5 cable
Power Supply	24V DC (via CAT5 or external)
Mounting	DIN rail
Dimensions (WxHxL)	137 x 98 x 126 mm
Operating Temperature	Up to 60°C (max)
Construction Material	PVC housing, U-profile, side plates Polyamide PA
Fire Resistance	V0 (UL 94)
Configuration	Via free Audac Configuration Manager software
Compatibility	APM paging stations (APM01/04/08/16)
Accessories	ARJ-03 splitter module for bus expansion
Safety	Professional installation only; refer servicing to qualified personnel

Frequently Asked Questions - ARU104MK2 Audac

How do I connect the ARU104MK2 to a paging station?

Connect the APM paging station to the ARU module using a straight CAT5 cable (pin-to-pin). The ARU module has two RJ45 sockets for daisy-chaining. Ensure the cable does not exceed 2m from the ARJ-03 splitter if used, and always maintain a bus topology (no star points).

What power supply voltage does the ARU104MK2 require?

The module requires 24V DC power supply. The current consumption is approximately 200mA for the ARU04/08 and 400mA for the ARU16. Ensure the total current of all modules does not exceed the power supply rating; use extra supplies if needed.

How do I configure the zones and button functions?

Use the free Audac Configuration Manager software (download from audac.be). Connect the system to a PC via an RS-232 to RS-485 converter. The software wizard guides you through addressing modules and assigning button functions like zone select, layer selection, or relay control.

Can I use multiple paging stations with one ARU104MK2?

Yes, you can connect up to 32 devices (APM + ARU/AVD) on a single bus using ARJ-03 splitter modules. Each paging station can have a different priority level. Ensure the total cable length does not exceed 1000m and that bus termination is applied at both ends.

How do I perform an emergency call override?

For emergency calls, connect an AVD module to switch 24V DC to the emergency relay inputs of volume controls. The ARU module's Input B (paging) is automatically passed through if power fails, ensuring the paging signal reaches the zones even without power.

What type of cable should I use for the bus?

Use a standard CAT5e UTP cable with straight pin-to-pin wiring. The pinout is: pin 1-2 (optional LON), pin 3 (+24V), pin 4 (RS485 A), pin 5 (RS485 B), pin 6 (GND), pin 7 (Audio S+), pin 8 (Audio S-). All connections must follow the diagram to avoid malfunction.

How do I reset the ARU104MK2 to factory defaults?

The ARU module does not have a manual reset button. To restore default configuration, you must reprogram it using the Audac Configuration Manager software. Re-address the module and reload a default configuration file.

What is the maximum cable length between modules?

The total bus cable length should not exceed 1000 meters for a daisy-chain topology. If the cable drop causes voltage below 16V at any module, add extra 24V DC power supplies. Use the formula: max length (m) = 277 / number of modules.

Can I use the ARU104MK2 with 100V line speakers?

Yes, the ARU module switches line level audio signals. For 100V speaker systems, connect the ARU output to a 100V amplifier. The module does not directly drive speakers; it switches the audio source before amplification.

How do I clean and maintain the ARU104MK2?

Disconnect power before cleaning. Use a dry, soft cloth to wipe the housing. Do not use liquids or solvents. The module requires no regular maintenance; refer any internal servicing to qualified personnel.

USER MANUAL ARU104MK2 Audac

PROFESSIONAL AUDIO EQUIPMENT

1/4/8/16 Zone Digital Paging Station (APM), 4/8/16 Digital Receive/Switch Module (ARU/AVD).

User manual & Installation Guide

AUDAC PROFESSIONAL AUDIO EQUIPMENT

User manual & Installation Guide

© AUDAC

http://www.audac.bc

[e-mail]

Index

INTRODUCTION 3

APM P AGING TABLE 3
ARU/AVD RECEIVE/SWITCH MODULE 5
ARU MODULE 6
AVD MODULE 6

ACCESSORIES APM PAGING TABLE....7

SAFETY REQUIREMENTS....8

CAUTION - SERVICING 8

OVERVIEW DIFFERENT APM MODELS 9

APM 16: 9
APM 08: 9
APM 04:....10
AMP01: 10

OVERVIEW DIFFERENT ARU / AVD MODULES....12

ARU04 12
ARU08 12
ARU16....12
AVD04....13
AVD08....13
AVD16....13

RJ-45 PIN CONNECTIONS....14

ATTENTION....14

POWER SUPPLY 15

MAXIMUM RATED CURRENT 15
VOLTAGE DROP ACROSS THE CABLE 15

GETTING STARTED....16

APM: 16
ARU: 17
CONNECTIONS ARU08 18
JUMPER SETTINGS FOR AUDIO ROUTING 19
AVD: 20
C CONNECTIONS A VD08: 20

WORKING PRINCIPLES OF THE ARU/AVD IN COMBINATION WITH THE APM....21

POSSIBILITY 1: APM01 DIRECTLY ON A PRIORITY INPUT OF A MIXING AMPLIFIER....21
POSSIBILITY 2: N LARGER INSTALLATIONS WHICH HAVE AN AMPLIFIER FOR EACH ZONE (SWITCHING ON LINE LEVEL)....22
POSSIBILITY 3: SWITCHING ON LINE LEVEL, INCLUDING EMERGENCY CALL ON VOLUME CONTROLS. 23
POSSIBILITY 4: USING TWO SEPARATE AMPLIFIERS FOR MUSIC AND PAGING. 24
POSSIBILITY 5: SWITCHING ON LOUDSPEAKER LEVEL, INCLUDING EMERGENCY CALL ON VOLUME CONTROLS....25

WIRE UP THE SYSTEM....26

ARJ03 MODULE 26
BUS STRUCTURE 27
ONE STARPOINT....27
MULTIPLE STARPOINTS 28

This section briefly describes the functionality of the APM/ARU/AVD

paging system.

The Audac Paging System was developed as a simple, flexible solution for evacuation and paging systems.

APM Paging Table:

This table microphone with zone-selection is equipped with a digital audio memory which allows storing all necessary “gong” signals.

The gooseneck microphone is equipped with a electret capsule with cardioïd sound pattern. A built-in Compressor/Limiter with Automatic Gain Control controls the output level of the unit.

There's also an indication on the front plate, to give the person who's talking an impression of his voice level.

The complete operation, from microphone till output including all digital parts, is guarded. In case of malfunction, there is a fault-indication. This is to make sure that when there is an emergency call, the message arrives at the listeners.

When there are several paging units placed in a bus-structure, you can configure them with different priority levels. The status of the audio-bus is indicated on the front panel (enable led). All these configurations can be made in a very simple way with the free software tool “AUDAC CONFIGURATION MANAGER”. This tool can be downloaded for from the AUDAC website (www.audac.be).

There are 4 basic models:

• APM 01: Paging Unit just for General announcements.
• APM 04: Paging Unit with 4 Zone Buttons, "Select All"-, "Clear"- and "Talk"-button.
• APM 08: Paging Unit with 8 Zone Buttons, "Select All"-, "Clear"- and "Talk"-button.
• APM 16: Paging Unit with 16 Zone Buttons, "Select All"-, "Clear"- and "Talk"-button.

The lower function buttons are standard programmed with following functions: a “Select All” button to activate all Paging Zones, a “Clear” button to deactivate all Paging Zones. The remaining buttons are used for Zone-Selection or other switch-functions.

All the buttons are free programmable with the "AUDAC CONFIGURATION MANAGER".

Following buttons are standard:

• Talk: By pressing this button, the “gong” starts to play. After this, you can make an announcement through the microphone.
• Select All: By pressing this button, all "Zone" buttons will be selected at once.
• Clear: This button deselects all selected "Zone" buttons.

Following functions are free programmable:

• Zone-select: Press one time to select a Paging Zone. Pressing a second time will deselect the Zone. By pressing “Talk”, the selected Zone will be switched.
• Power Up delay: This is a function for switching on/off several devices. The step-time is adjustable on the receive/switch unit with a small trimmer.
• Pulse Relay: By pressing a button, this function will activate a relay. This relay stays activated as long as you keep the button pressed down (Press and hold function) (e.g. To open a door with electrical door contact).
• Toggle Relay: By pressing a button, this function will activate a relay. By pressing the button again, Toggle relay will deactivate the relay (Set-Reset function) (e.g. Switching lights,...).
• Select Layer 0: Using layers (max. 3 layers) makes it is possible to expand the Paging Unit. By pressing this button, Layer 0 will be activated.
• Select Layer 1: Press this button to activate layer 1.
• Select Layer 2: Press this button to activate layer 2.

Following functions are available in "Service mode":

• Volume Up (mic. or gong): With this function button, you can increase the volume (microphone or gong) with steps of 3dB (256 steps).
• Volume Down (mic. or gong): With this function button, you can decrease the volume (microphone or gong) with steps of 3dB (256 steps).
• Select mic.: By pressing this button, you select the microphone to change its volume.
• Select gong: By pressing this button, you select the gong to change its volume.

The standard used bus protocol is RS-485, but with an extra plug-in card other bus standards are also available (e.g. LON,...).

ARU/AVD Receive/Switch module:

The Audac ARU/AVD Receive/Switch modules are designed for use with the AUDAC APM01/04/08/16 paging stations. The modules communicate over RS485 and have 4/8/16 relays for several switching tasks.

Following modules exist:

- ARU04: This module can switch between 2 signals (background music and Paging Microphone) and is equipped with 4 relays (4 different zones).

- ARU08: This module can switch between 2 signals (background music and Paging Microphone) and is equipped with 8 relays (8 different zones).

- ARU16: This module can switch between 2 signals (background music and Paging Microphone) and is equipped with 16 relays (16 different zones).

- AVD04: This module can switch a common signal (e.g. 24VDC) to 4 different outputs. (Activating emergency call relay, triggering power relays for curtains,...).

- AVD08: This module can switch a common signal (e.g. 24VDC) to 8 different outputs. (Activating emergency call relay, triggering power relays for curtains,...).

- AVD16: This module can switch a common signal (e.g. 24VDC) to 16 different outputs. (Activating emergency call relay, triggering power relays for curtains,...).

The ARU module:

This module was designed for switching between 2 signals (background music and Paging). There are 4, 8 and 16 channel modules.

The ARU module was made very flexible. For example: it's possible to use separate music sources for each zone, or to use 1 common music source for all Paging Zones. All combinations in between are possible. The connections which have to be made for this can be done in a very simple way by setting “jumpers”.

In case of large installations, the ARU modules can be placed in cascade and addressed by the Configuration Software.

The ARU module is suitable for mounting on a DIN-rail. On one side you have the “fixed connections” (e.g. Amplifiers, ...). On the other side you have the “field connections” (e.g. Loudspeaker cables, CAT5 bus cable,...). This way of working allows a quick, proper cabling of the system.

The AVD module:

This module was designed for switching 1 common signal to the output. There are 4, 8 and 16 channel modules.

The AVD module can be used for the following purposes:

• Activating the “Emergency Call” relay on a classic volume control. In this case, we’re going to switch 24V DC.
• Activating power relays or teleruptors to trigger e.g. window blinds, door contacts, ...
• Power on delay: In case of heavy equipment where the turn-on current is too large (e.g. 8 amplifiers of 4000 Watts), you can switch them on in cascade. The delay time is adjustable by a small trimmer on the AVD unit.

In case of large installations, the ARU modules can be placed in cascade and addressed by the Configuration Software.

The AVD module is suitable for mounting on a DIN-rail. On one side you have the “fixed connections” (e.g. Amplifiers, ...). On the other side you have the “field connections” (e.g. Loudspeaker cables, CAT5 bus cable,...). This way of working allows a quick, proper cabling of the system.

Accessories APM Paging Table

The APM 01/16 is standard equipped with a gooseneck microphone.

Other parts:

- Transparent bezels for buttons (APM16: 19pcs, APM08: 11pcs, APM04: 7pcs, APM01: 1pc).

- Windscreen for the microphone.

Chapter 1

Safety Requirements

The APM 01/04/08/16 can be configured by the free “AUDAC CONFIGURATION MANAGER” software tool. This must be done by a qualified person. Do not open the units, unless you are qualified to do so.

Remove the CAT5 cable before performing any servicing.

The ARU/AVD 04/08/16 contains several “jumpers” which can be set for a desired configuration. These settings may only be done by qualified people.

Switch the power off before changing any “jumpers”.

CAUTION - SERVICING

This unit contains no user serviceable parts. Refer all servicing to qualified service personnel. Do not perform any servicing unless you are qualified to do so.

Note

This product conforms to the following European Standards: EN 50081-1: 1992, EN 50082-1: 1992, EN 60065: 1994, EN 60849

Overview different APM models

APM 16:

APM 08:

APM 04:

APM 01:

The figures above present al modules with their standard functions behind the buttons.

There are 4 standard models :

- APM 16: Contains a 4x4 programmable button matrix and a row with basic functions. Following functions are standard on these buttons:

Zone 1 - 16, Select All, Clear All, Push to Talk.

- APM 08: Contains a 4x2 programmable button matrix and a row with basic functions. Following functions are standard on these buttons:

Zone 1 – 8, Select All, Clear All, Push to Talk.

- APM 04: Contains 4 programmable buttons and a row with basic functions. Following functions are standard on these buttons:

Zone 1 – 4, Select All, Clear All, Push to Talk.

- APM 01: Contains 1 single button: Push to Talk (General announcement).

It's possible to reprogram all function buttons. This can be done with the configuration software.

There are also 4 indication LED's with following functions:

Orange LED: Bus status (enable). Flashes when the gong is played.

Green LED: Voice level indication while speaking. The green LED means: Voice level is OK.

Red LED's: These LED's light up if the voice level is too low or too high.

In case of any malfunction (e.g. Microphone is broken), the green and red LED will start flashing. This way, you can always see if the Paging Table is functioning correctly.

Overview different ARU / AVD modules

ARU04

ARU08

ARU16

AVD04

AVD08

AVD16

RJ-45 pin connections

The APM/ARU/AVD Series are connected by a CAT5 cable. The units need a 24V DC power supply. The 24V DC is connected to the ARU/AVD module. Every ARU/AVD module has 2 RJ45 sockets. By these sockets, the units are connected in a bus structure by a CAT5 cable. The connections are as described below:

Pin 1 White-Orange LON A (optional)
Pin 2 Orange LON B (optional)
Pin 3 White-Green +24V DC
Pin 4	Blue	RS485 A
Pin 5	White-Blue	RS485 B
Pin 6	Green	GND
Pin 7	White-Brown	Audio S+
Pin 8	Brown	Audio S-

ATTENTION

The Cat5 cabling must always be “straight”. In case of self made cabling, it must be done as described above, to make the system work properly. To easily create a bus structure, there are “ARJ-03 splitter” modules (AUDAC). These will be described later.

Power supply

Normally, the power supply must be connected with only one ARU-, AVD- or splitter module. The other modules of the paging network are fed through the CAT5 cable.

Maximum rated current

The power supply's maximum rated current must be higher than the sum of the currents of the connected modules. If the sum exceeds 2A, it's best to use an extra power supply instead of using a power supply with a larger maximum rated current.

For example: an APM module uses +/-300mA , an ARU/AVD/04/08 uses +/-200mA and an ARU16/AVD16 uses +/-400mA . Choosing the right 24V DC power supply: E.g.: We have 2x ARU08 modules, 1x AVD16 module and 3x paging stations. This means a total of 200 + 200 + 400 + 300 + 300 + 300 = 1.7 Ampere at 24V DC. In this case we recommend a power supply of at least 2A at 24V DC.

Voltage drop across the cable

In case of a large number of modules (ARU-, AVD modules and paging stations) and/or large cable distances, voltage loss across the CAT5 cable can occur. In this case some extra power supplies must be placed in the system. These power supplies can be connected to ARU-, AVD- or splitter modules.

Always make sure the power supply at the ARU-AVD modules and paging stations does not drop below 16V due to voltage drop across the cable.

A simplified calculation method can be used:

Allowable voltage drop across the cable: Vdrop = 8V

Average Cable resistance of UTP CAT5e cable: Rcable = 0.096 ohm/meter

Average current of a module: Iav = 0.3A

Number of modules: x

Cable length: L (in meters)

Simplified formula: Vdrop = L * Rcable * Iav * x

So maximum cable length L = Vdrop / (Rcable * Iav * x)

If we fill in the parameters, we get = 277 / x , with x being the number of connected modules.

For example: if we have 6 modules connected to one power supply, the maximum total cable length of the data bus is L = 277 / 6 = 46 meters.

Getting Started

APM:

When turning the power on, the APM paging station comes into its “USER MODE”. In this mode you have function buttons (in most cases Zone buttons, 4-8-16), one “Select All” button, one “Clear All” button and one “Talk” button.

When selecting a zone, the button will light up “green”. When pressing again, the green LED will go out. You can select all Zones by pressing “Select All” and deselect all made settings by pressing “Clear All”.

To make an announcement, you press the “Talk” button and keep it pressed down. This can only be done in case the audio bus is free (=not in use by another paging Station. The yellow LED may not light up).

Following actions will take place:

• All selected zones will be transmitted to the ARU/AVD receive units and the relays will switch.
• Next step is the playing of the "gong" signal. During this, the "enable" LED flashes.
• When the “gong” signal is terminated, the “enable” LED stops flashing, the “LOW” LED lights up and the microphone is turned on. From that moment, the announcement can begin. The best way to speak through the microphone is from a distance of ±5 cm, and with a voice level that makes the “green” LED (Level = GOOD) light up.
• To terminate the announcement, just release the "Talk" button.
• From that moment, you can change the selected zones for the next call.

The APM01 has just one “Talk” button, which is used to make a general announcement (All zones). It’s also possible to specify a number of zones. This must be done in the Configuration Manager Software Tool.

ARU:

The figure below shows the meaning of the connections of an ARU08 module. These are the same for the ARU04 and ARU16 modules.

Connections ARU08

Zone output: This is the output to which signal A or B is switched for each zone. (The ground connection should be made at the connection points of Input Channel A or B.)

Input Channel A: This input is standard selected. It's meant for connecting the signal of a music source.

Input Channel B To this input channel, the signal of the Paging Table(s) must be connected. By disconnecting the power (e.g. Fault), this input will be passed through.

24V DC: The system needs 24V DC power. See part “Power supply and pin configuration” for more explanation.

Line output APM This is the line level signal of the paging table(s). This signal must go to an amplifier. There are different ways to do this (see next chapter).

Jumpers for Audio Routing With these jumpers you can easily make audio routings. This saves extra external cabling.

Analogue relay activation: This makes it possible to activate a relay simply by pulling a contact to the ground (e.g. with pushbutton,...).

2 x RJ45 (data bus): The data bus and DC power of all modules are distributed through the CAT5 cable. To guarantee proper operation, the cabling must be “Daisy-chain”. The front and the end of the bus must be terminated with a resistor (+-120 Ohm). This can be done on the last ARJ03-splitter module by setting a jumper (see further in this manual).

Jumper settings for audio routing

In this example 3 jumpers are set.

The jumper on the right side above input “IN_1” connects the left channel of “IN_1.A” to the right channel of “IN_1.A” (blue tracks). The second jumper can be used to connect the left channel of input channel IN_1.B to the right channel of IN_1.B. Input channel A and B each have their own jumper.

The two jumpers on the right side connect "IN_7.A.right" with "IN_8.A.right" (top jumper, green tracks) and "IN_7.A.left" with "IN_8.A.left" (second jumper, purple tracks). The third jumper can be used to connect "IN_7.B.right to "IN_8.B.right", and the fourth jumper can be used to connect "IN_7.B.left" with "IN_8.B.left". As you can see, it's possible to connect an input channel A or B to a previous and/or next input channel A or B.

Lots of combinations are possible. In the example above, the A input channels are used, but it's also possible to use the B input channels.

AVD:

Connections AVD08:

24V DC: The system needs 24V DC power. See part “Power supply and pin configuration” for more explanation.

Common switch signal To connect the common signal you want to switch (e.g. 24V DC or Paging signal).

Output Signal Where the common input signal is switched to.

Analogue relays activation: This makes it possible to activate relays by pulling the contact to ground (e.g. with push button).

2 x RJ45 (data bus): The data bus and DC power of all modules are distributed through the CAT5 cable. To guarantee proper operation, the cabling must be "Daisy-chain". The front and end of the bus must be terminated with a resistor (+-120 Ohm). This can be done on the last RJ03-splitter module by setting a jumper (see further in this manual for more information).

Working principles of ARU/AVD in combination with APM

Following figures indicate the working principles of APM tables with ARU/AVD modules.

Possibility 1: APM01 directly on a priority input of a mixing amplifier

The Paging Microphone input is connected to an override-input of a mixing amplifier. As option you can place an ARU or AVD module to activate Emergency Call relays, if there are volume controls in each room.

Possibility 2: in larger installations which have an amplifier for each zone (switching on Line Level)

In this setup, the ARU module is placed in the Line Level circuit. You can make an announcement in every zone separately. With ARJ-03 splitter modules it's possible to connect more than 1 paging table to the system. Every paging table can have its own priority level.

If there is more than 1 ARU module used, the music sources must be connected to every ARU module. The paging signal is passed through the CAT5 cable and must be connected to Input B on the ARU module.

Possibility 3: switching on Line Level, including Emergency Call on volume controls

This is the same principle as in the previous case, except for the extra use of an AVD module to override the volume control in case of Emergency Call.

In this case the music can be regulated at low level, without influence on the paging signal.

Possibility 4: using two separate amplifiers for music and paging

In this setup, you need an amplifier for the music signal and an amplifier for the paging signal. The volume between these two can be regulated separately. The power of the amplifier must be calculated on the total load of the system.

In this configuration, the great advantage is that there are only 2 amplifiers needed, even if there are more then 2 paging zones. The disadvantage is that the volume is equal for each room. This can be solved by placing volume controls in each room (with or without Emergency Call).

Possibility 5: switching on loudspeaker level, including Emergency Call on Volume Controls

This is the same setup as the previous one, but with volume control for each zone. With an extra AVD unit, it's possible to switch the Emergency Call of the Volume Controls. In this case, you're switching 24V DC.

Wire up the System

The system uses an RS-485 bus protocol. For this reason, it's very important to avoid making a "STAR" structure in the cabling. In large systems it's also important to terminate the bus in a proper way. This can be done with an ARJ-03 module (explained further in this manual).

RS-485 is a differential bus structure, so cabling must be twisted pair (pairs of CAT5 are twisted). Data is the middle pair of the Cat5 cable (blue pair).

ARJ03 module:

This is a compact, cheap module which makes it possible to place more than one paging table on the bus. The module has a jumper for terminating the bus (120 Ohm resistor). The middle connector (marked: "To APM") is used to connect the paging table. The cable used to connect the paging table to the middle connector may not exceed 2m. If the cable is longer then 2m, a "star point" is created, so reflections on the data bus may occur and will result in signal and performance loss. An exception to this rule can be made when the paging table is connected at the end of the data bus, in other words: when there is no cable attached to the "Bus Out" connector.

The ARJ-03 module can be placed under a desk or in a cableway.

Following figure shows the top of the module:

BUS STRUCTURE

Following figure shows a correct example of cabling the system:

Wires connected to the paging tables are shorter than 2m, the total cable length of the data bus does not exceed 1000m.

ONE STARPOINT

The figure below shows an example of a setup with one “star point” (T-junction). Avoid the use of one “star point”!

Wires connected to the paging tables are shorter than 2m, the total cable length of the data bus does not exceed 500m.

MULTIPLE "STAR POINTS"

The figure below shows an example of a setup with multiple “star points”. Avoid the use of a multiple “star point” structure!

This is not a correct setup !!

Advanced operation APM

Activating “Setup Mode”: When you turn on the power (plug in CAT5Cable) while pressing the “Talk” Button, you activate “Setup Mode”. In this mode, the volume settings of the microphone and the gong can be adjusted.

Following figures give an overview of button-functions in "Setup Mode":

APM16:

APM08:

APM04:

APM01:

With an APM01, the volume settings are not possible.

All volume settings are standard regulated at proper levels. In normal circumstances, it won't be necessary to change them.

Configuration of the ARU/AVD modules

All AUDAC ARU and AVD modules can be configured with a free software configuration tool. This is necessary for addressing all modules, declaring button functions, ...

The “AUDAC CONFIGURATION SOFTWARE” tool can be downloaded for free in the download section of the AUDAC website http://www.audac.be. In the help-file of the program you’ll find a complete explanation of how the tool has to be used and the programming can be done. This tool is made by a “wizard” principle, so no necessary steps or settings can be overlooked.

To be able to program an APM/ARU/AVD configuration, the configuration needs to be connected to a PC on which you have installed the Audac configuration software. The setup you have to make is described in the topic “Additional information APM/ARU/AVD”, section “Pinout RS485 Audac paging system for development purposes”.

Additional Information APM/ ARU/ AVD

PINOUT RS485 AUDAC PAGING SYSTEM FOR DEVELOPMENT PURPOSES

RS485 UTP CAT5e cable
Pin number	Wire Color Con	ction
1 orange / white NC
2 orange NC
3 green / white +24V DC
4	blue	RS485A
5	blue / white	RS485B
6	green	GND
7	brown / white	Audio Signal +
8	brown	Audio Signal -

NC = not connected

Serial data cable depends on the RS232-RS485 conversion unit

CONDENSATOR MICROPHONE Audac CMS45

Small elegant electret microphone with gooseneck, with a 3/8" mounting screw.

Perfect for high definition speeches.

A cardioïde characteristic makes the microphone less sensitive for feedback.

Technical specifications microphone.

Microphone type electret

Dimensions ∅ 8 X 300 mm

Weight 100 gr.

Connections red= signal, ground = - white + power supply, ground - power supply

Supply Voltage 1,5 V max. 10 V

Dimensions APM console

WxLxH (mm) 120 x 192 x 50

Material Steel

Mechanical info ARU/AVD

Housing PVC, non-breakable

Fire Resistance V0(UL 94)

Max. temperature 60°

Color Green

U-profile PVC, non-breakable

Color Transparent

Max. temperature 55°

Side plates Polyamide PA

Fire resistance V0(UL 94)

Color Green

Dimensions ARU/AVD

ARU4/ AVD4 (WxHxL) 137 x 98 x 126

ARU8/ AVD8 (WxHxL) 207 x 98 x 126

ARU16/ AVD8 (WxHxL) 380 x 98 x 126

ARJ3 (WxHxL) 82 × 30 × 45

APM1/4/8/16 (WxHxL) 120 x 55 x 195

Technical specs

Power 24V DC

Data bus protocol RS-485

Bus cabling CAT5

Personal Notes