ATEIS ECS User Manual

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ATEIS INTERNATIONAL

Version

: EN.1

ECS MANUAL

Full instruction guide for the

Echo Cancellation System

Ateïs International

3/3/2010

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Version EN.1

CONTENTS

INTRODUCTION ............................................................................................................................4

WELCOME ................................................................................................................................4

PRESENTATION.........................................................................................................................4

PRODUCTS............................................................................................................................4

DEVELOPMENT .....................................................................................................................4

ATEÏS Field of applications ........................................................................................................4

ECS PRESENTATION ......................................................................................................................5

INSTALLATION ..............................................................................................................................6

SYSTEM OVERVIEW ......................................................................................................................7

MACHINE..................................................................................................................................7

AUDIO ......................................................................................................................................7

LINKING....................................................................................................................................7

SYSTEM CONFIGURATION.........................................................................................................7

PRESET MANAGEMENT.............................................................................................................8

SYSTEM CONTROL.....................................................................................................................8

CONNECTION............................................................................................................................8

COMPONENTS ..........................................................................................................................8

SYSTEM.....................................................................................................................................8

OFFLINE PROGRAMMING .........................................................................................................8

FOR YOUR SAFETY ........................................................................................................................9

CONTACTS..................................................................................................................................11

HARDWARE DESCRIPTION ..........................................................................................................12

FRONT PANEL .........................................................................................................................12

1) JOG-DIAL / DATA.............................................................................................................12

2) ENTER BUTTON...............................................................................................................12

3) BACK BUTTON.................................................................................................................12

4) NET A / NET B LED...........................................................................................................12

5) CONFIGURABLE AUDIO I/O .............................................................................................12

6) ETHERNET LED ................................................................................................................12

7) POWER LED.....................................................................................................................12

REAR PANEL............................................................................................................................13

1) POWER SECTION.............................................................................................................13

2) LINK CONNECTORS..........................................................................................................13

3) RS485 CONNECTORS.......................................................................................................13

4) CONTROL INPUT CONECTORS .........................................................................................14

5) LOGIC OUTPUTS CONNECTORS .......................................................................................15

6) RS232 CONNECTOR.........................................................................................................15

7) ETHERNET (RJ45) CONNECTOR........................................................................................16

8) TELEPHONE CONNECTOR................................................................................................16

9) AUDIO INPUT/OUTPUT CONNECTOR...............................................................................16

FRONT ACCES (LCD Screen).........................................................................................................17

ACOUSTIC ECHO CANCELLATION (AEC).......................................................................................22

ACOUSTIC ECHO EXPLANATION ..............................................................................................22

ACOUSTIC ECHO CANCELLATION RULES..................................................................................23

AEC WITH TWO DEVICES.........................................................................................................25

Schematic: ..........................................................................................................................25

Design in the ECS: ...............................................................................................................26

AEC WITH ONE DEVICE ...........................................................................................................28

Schematic: ..........................................................................................................................28

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Design in the ECS: ...............................................................................................................28

AEC WITH CODEC SERVER.......................................................................................................30

Schematic: ..........................................................................................................................30

Design in the ECS ................................................................................................................32

AEC WITH CODEC SERVER AND LOCAL AMPLIFICATION...........................................................33

Schematic: ..........................................................................................................................33

Design in the ECS: ...............................................................................................................33

AEC WITH FULL EXAMPLE (2 mics, 2 lines, local amplification) ................................................34

Schematic: ..........................................................................................................................34

Design in the ECS: ...............................................................................................................35

AEC COMPONENT FUNCTIONS................................................................................................36

AEC Coefficient / Reset .......................................................................................................36

Volume display and control.................................................................................................36

Non Linear Process (NLP) ....................................................................................................37

AEC COMPONENT PARAMETERS.............................................................................................38

AEC SETUP PROCEDURE..........................................................................................................39

TELEPHONE CARD.......................................................................................................................45

Schematic: ..........................................................................................................................45

Design in the ECS : ..............................................................................................................46

TELEPHONE CARD COMPONENT.............................................................................................46

TC Transmit Component .....................................................................................................46

TC Receive Component.......................................................................................................48

LOCAL ECHO SUPPRESSOR ..........................................................................................................49

Schematic: ..........................................................................................................................50

Design in the ECS: ...............................................................................................................50

LOCAL ECHO SUPPRESSOR COMPONENT ................................................................................51

ADDITIONAL DEVICES FOR ECS SYSTEM ......................................................................................52

URC (UNIVERSAL REMOTE CONTROL) .....................................................................................52

PPM........................................................................................................................................52

PPM-SP (stacking paging)........................................................................................................52

RAC (REMOTE ACCESS CONTROL) ...........................................................................................53

JB (JUNCTION BOX).................................................................................................................53

Remote Devices Hardware Connections .....................................................................................54

Connection example for one PPM with JB...............................................................................55

Connection example for several PPMs with JB ........................................................................56

Rj45 pin out ............................................................................................................................57

Junction Box ...........................................................................................................................57

Connect JB to ECS ...............................................................................................................59

Connect URC to ECS with JB ................................................................................................59

Connect URC to ECS ............................................................................................................59

Connect PPM to JB..............................................................................................................60

Connect PPM to ECS ...........................................................................................................60

Connect RAC...........................................................................................................................60

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INTRODUCTION

WELCOME

Thank you for choosing ATEÏS ECS. We hope you will enjoy using this exciting piece of technology as much as we enjoy developing and building it.

This manual can be updated at any time without prior notice in order to keep this manual up to date. In case of errors in this manual or not clear process description, feel free to submit us mistakes, suggestions or questions by sending an email: [email protected] subject: ECS manual corrections. This document intends to be a complete manual and we hope that this Help file will provide you all information or answers needed. However if you have any questions, feel free to contact us.

PRESENTATION

ATEÏS is a leading supplier of high-quality PA/VA audio equipment with distributors and

subsidiaries in 23 countries throughout Europe, States, Middle East and Asia. Since 1981 we are manufacturing reliable and high quality loudspeakers, amplifiers, security matrices and other audio components. Our products are manufactured to IS0 9001 standards and, when possible, meet local requirements.

With more than twenty years of experience, ATEÏS has quickly established itself as a leading manufacturer of Public Address, Voice Alarm systems and counter intercoms. The constant growth of market share in Europe provides confirmation of the quality of ATEÏS’s commercial and technical approach.

PRODUCTS

The company now offers a full range of sound equipment: microphones, preamplifiers, digital processors, digital audio matrixes, loud-speaker monitoring systems, amplifiers, etc. ATEÏS designs and manufactures leading products in the voice alarm systems market which have been certified EN60849 compliant by the TÜV.

DEVELOPMENT

Thanks to a development team that includes thirty engineers, and to constant investment, we are able to respond quickly to the demands of our various markets with specific solutions and cutting edge technology. We have distributors in more than fifteen countries in Europe and the Middle East, with whom we have carried out major projects. In choosing ATEÏS, you are guaranteed a trustworthy partner that can be counted on for the long term.

ATEÏS Field of applications

ATEÏS's audio systems have been installed into following markets:

- Railways

- Subways

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- Airports

- High raise buildings

- Hotels

- Restaurants

- Shopping center and Malls

- Theme parks

- Places of worship

- Stadia

- Museums

- Industrial buildings

- Industrial plants

- Commercial buildings

ECS PRESENTATION

The ATEÏS ECS is the new Ateïs processor which includes the echo cancellation component in more than general functions of UAPg2 and LAPg2. Designed for Conference application, the ECS is the new DSP audio Matrix for medium paging application and multi zone audio routing. According to its powerful audio numerical signal treatment the ECS can easily be used in an exigent environment requiring audio quality.

Thanks to its Ethernet port you can easily connect and pilot the ECS through an IP network or direct from a PC by using RJ-45 connector.

ECS's programming is done through convivial software Ateïs Studio based on graphical Windows® design environment. The signal path is defined by adding DSP components (Equalizer, Gate, Compressor, delay...), simply inserted in a clear and easy graphical window by "drag en drop" operation. You can recreate a complex audio system in a simple 1U space machine. Forget the addition of machines that required racks and too much long cables in the past.

Once programmed, you can pilot your system through PC, VITY, Crestron or AMX. You can also disconnect the PC and the networked devices run as a standalone system; however it can be controlled through a range of controllers (logical TTL Input, logical TTL Output, analogical inputs, RS485 network). Wall mounted source selectors, smart controllers and programmable paging mikes are available.

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INSTALLATION

RACK MOUNTING:

If needed, fit the rack mounting brackets to each side of the ECS by using the 6 pcs Phillips M3X

screws supplied with the package.

SITTING

The ECS takes only a single 19’’ rack space and generates little heat itself. Consider leaving enough ventilation space above and below the unit. Do not mount the ECS directly above heat generating devices like power supplies or power amplifiers.

ECS cooling is provided by a fan at the left side of the unit. Be sure to not to block the air vent holes along the sides of the housing. Normal operation is ensured within a temperature range between 0°C and 40°C (32 °F to 104 °F).

POWER CONNECTION:

Connect the AC to the mains supply via a power cord. Check your line voltage before plugging in. The power supply of the ECS accepts AC voltages ranging from 100 V to 240 V, 50/60 Hz. The ECS can also be powered up from a 24 VDC supply; i. e. backup battery.

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SYSTEM OVERVIEW

MACHINE

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The ECS is made of:

• 6 slots of 4 audio channels

• 8 (0 to 5 VDC) Control inputs either analogue or Logical (contacts)

• 2 logic outputs (Dry contacts)

• RS-232 serial interfacing for third party control

• Ethernet port (RJ-45) TCP/IP based

• RS-485 for connecting ATEÏS remote devices (URC, PPM-SP)

• 90 Mbytes memory Message player (Wave format, 16/24/48kHz, 16bits)

• Devices linked using ATEIS NET

• One microcontroller and one DSP for standalone operation

AUDIO

The ECS unit handles 6 slots of 4 audio channels. Each slot can contain either an input board (A/D converters) or an output board (D/A converters); this is a factory hardware configuration. You can choose between them and custom your ECS as you want.

The excellent sonic performance is being achieved by the advanced 24 bit A/D and D/A converters, together with the 48/96 kHz capable audio processing and the ADSP 21369 (400MHz SIMD SHARC Core, capable of 2.4 GFLOPS peak performance).

Every single analogue audio input can be software defined for five different sensitivities (input gain

of 0dB, 12dB, 24dB, 40dB or 54dB it means the input device have sensitivities of 0dB, -12dB, -24dB, -40dB or -54dB) and

for 48V phantom power operation. This can be set for each single channel and each machine independently.

The ECS can contain from 1 to 4 AEC boards. Each one has two ADSP 21363 (333 MHz SIMD SHARC Core, capable of 2 GFLOPS peak performance). That's need for the AEC treatments.

LINKING

If more inputs or outputs are required, it is possible to digitally link several ECS by using the

Ateïs Net. This one is explained in the Ateïs Studio manual.

SYSTEM CONFIGURATION

To tell the machine what to do with audio and control signals there is a Windows® based graphical design and operating environment software called Ateïs Studio. With this all-in-one program you build up the network, design signal processing from a huge library of DSP components and apply control sources.

The signal path of the ECS is built from virtual elements called 'Components', providing the functionality of simple preamps, filters, dynamics, delays, or more complex processors like automatic mixers, crossovers or feedback killer. Their control windows hold all the buttons, faders, knobs, meters etc. to set the desired values.

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There is also the AEC component which is particular to the ECS. It is this component which allows echo cancellation.

After selecting, placing and wiring DSP 'Components', your 'System' will be compiled and sent to the ECS via TCP/IP Ethernet port.

PRESET MANAGEMENT

The ECS includes two types of presets:

The Sub-Preset presets (Parameter -preset): They enable values of multiple parameters of the same design, such as levels, gains, EQ, etc. to be restored either from the PC software, the remote controllers or the control inputs.

The Master presets (Design preset): they enable completely different designs to be restored. Application examples for this feature are hotel meeting rooms with removable walls.

These 'Master Presets' and 'Sub-Presets' residing in the ECS's memory which can be accessed in many ways: PC, Logic inputs, Third party.

The limitation depends on memory usage. In Ateïs Studio, there is an indication of percentage of used memory

SYSTEM CONTROL

Once a 'System' is stored into the ECSs memories, you can disconnect your PC and run it as a standalone audio network. You can control all parameters like 'Channel Level', 'Master Volume' etc. from assignable control sources or from front knob. There is a range of control devices built for the system you can operate. The ECS integrates perfectly into third party control systems like: VITY, AMX, Audace, Crestron, etc.

CONNECTION

Audio and control connections are made via Euro-block connectors on the rear panel of the units.

COMPONENTS

Huge library with audio tools for all applications (routing, paging, signal processing, networking, speaker managing, etc)

SYSTEM

• System design by drag & drop

• DSP design by drag & drop from component library

• Changeable appearance of the control elements

OFFLINE PROGRAMMING

Design and editing of 'DSP designs'

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FOR YOUR SAFETY

Please follow the instructions in this chapter to get the optimum results from these units.

EXCLUSION OF RESPONSIBILITY

Manufacturer, importer, or dealer shall not be liable for any incidental damages including personal injury or any other damages caused by improper use or operation of the ECS.

INTERFERENCE

Like all computing devices, the ECS uses high frequency digital circuitry that may cause interference on radio or television equipment placed close to the unit. The best solution for problems like this is to relocate the affected parts.

WARNING

• Do not expose the ECS to extreme temperatures, direct sunlight, humidity, or dust, which could cause fire or electrical shock hazard.

• Keep away water or other liquids from the ECS. Otherwise fire or electrical shock may result.

• Connect the power cord only to an AC outlet of the type stated in this Owner's Manual or as

marked on the unit. Otherwise fire and electrical shock hazard results.

• When disconnecting the power cord from an AC outlet always grab the plug. Never pull the cord. A damaged power cord is a potential risk of fire and electrical shock hazard.

• Avoid touching power plugs with wet hands. Doing so is a potential electrical shock hazard.

• Take care for correct polarity when operating the ECS from a DC power source. Reversed

polarity may cause damage to the unit or the batteries.

• Avoid placing heavy objects on power cords. A damaged power cord is a fire and electrical shock hazard.

• Do not cut, scratch, bend, twist, pull, or heat the power cord. A damaged power cord is a fire and electrical shock hazard. Ask your ATEÏS dealer for replacement.

• Turn off the unit immediately, remove the power cord from the AC outlet and consult your ATEÏS dealer in any of the following circumstances:

o Smoke, odour, or noise getting out of the unit. o Foreign objects or liquids get inside the ECS. o The unit has been dropped or the shell is damaged. o The power cord is damaged.

If you continue using the ECS, fire and electrical shock may result.

• Do not drop or insert metallic objects or flammable materials into the unit as this may result in fire and electrical shock.

• Do not remove the ECS s cover, as there are exposed parts inside carrying high voltages that may cause an electrical shock. Contact your ATEÏS dealer if internal inspection, maintenance, or repair is necessary.

• Do not try to make any modifications to the ECS. This is a potential fire and electrical shock hazard.

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• Avoid the ECS’s ventilation slots to be blocked. Blocking the ventilation slots is a potential fire hazard.

CAUTION

• To prevent the unit from falling down and causing personal injury and/or property damage, avoid installing or mounting the unit in unstable locations.

• Leave enough space above and below the unit to provide good ventilation of the ECS. If the airflow is not adequate, the ECS will heat up inside and may cause a fire.

• Operate the ECS in an environment with a free-air temperature of between 0 °C and 40 °C (32 °F and 104 °F).

• Turn off all audio equipment when making any connections to the ECS, and make sure to use adequate cables.

• Do not use benzene, thinner, or chemicals to clean the ECS. Use only a soft, dry cloth.

• If the ECS is moved from a cold place (e.g. overnight in a car) to a warmer environment,

condensation may form inside the unit, which may affect performance. Allow the ECS to acclimatize before use.

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CONTACTS

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INTERNATIONAL

Sydneystraat 42, 3047BP ROTTERDAM - NETHERLANDS

Fountain Court, 2 Victoria Square, Victoria Street, St. Albans, Hertfordshire, AL1 3TF, UK

Web: http://www.ateis-international.com

Chemin du Dévent, 1024 Ecublens -Switzerland

Web: http://www.ateis-international.com/

Building SEA, room 324, DAFZA, DUBAÏ, United Arab Emirats

Web, contact: http://www.ateis-international.com/

34, avenue de l’Europe, Z.A Font Ratel, CLAIX, FRANCE

Web, contact: http://www.ateis-france.fr/

Industriestrasse 8, D-63801 Kleinostheim, Deutschland

Web: http://www.ateis-germany.de/

Web, contact: http://www.ateis.co.uk/

Ateïs China, 亚提斯（中国）技术服务中心

地址：上海市闵行区吴宝路255号力国大厦610室

Web, contact: http://www.ateis.com.cn

ATEÏS Europe bv

Phone: +31 (0)10 2088690

Fax: +31 (0)10 2088699

Ateïs International S.A.

Phone: +41 (0)21 881 25 10

Fax: +41 (0)21 881 25 09

Mail: [email protected]

Phone: +971 4609 1325/24

Fax: +971 4609 1326

Phone: +33 (0) 4 76 99 26 30

Fax: +33 (0) 4 76 99 26 31

Phone: +49(0)60 27 97 98 85

Fax: +49(0)60 27 97 98 80

Mail: [email protected]

phone: + 44 (0) 8456 521 511

Fax: + 44 (0) 8456 522 527

电话：021-54495191/92

传真 021-54495193

Ateïs Middle East

Ateïs France

Ateïs Germany

Ateïs UK

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HARDWARE DESCRIPTION

FRONT PANEL

1) JOG-DIAL / DATA

The jog-dial allows navigation in the menu of the ECS screen.

2) ENTER BUTTON

This button is used to enter in a menu or to validate a parameter in the ECS screen.

3) BACK BUTTON

This button is used to go out of a menu or out of a parameter in the ECS screen.

4) NET A / NET B LED

These independent led Light when data are received or sent on the port.

5) CONFIGURABLE AUDIO I/O

Inside the ECS you have 6 audio slots (named A, B, C, D, E and F). Each of these audios slots receives either 4 audio inputs channels or 4 audio outputs channels. When you switch on the ECS you can see which kind of audio card is fitted in each slots:

• Green LEDs mean INPUTs

• Yellow LEDs mean OUTPUTs

When a signal passes through an input or an output the corresponding LED will blink.

6) ETHERNET LED

Light when the ECS is connected (on-line) to TCP/IP network.

7) POWER LED

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Lights when the ECS is switched on.

Normal status Standby status

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Error status

-Problem on the Ateïs Net.

-The ECS has no design inside.

-The design inside the ECS does not match with the physical installation.

-If the link led is off : The ECS has no input link

Power

LED

The LED grows bright in green

The LED grows

bright in red

The LED flicks in red and green

REAR PANEL

1) POWER SECTION

Insert provided power cable first into ECS then in the wall power connector. Power switch:

• | (engaged) = ON;

• O (engaged) = OFF

2) LINK CONNECTORS

If you want to put several ECS in your rack (increase the number of input/output or remote controllers) simply use straight CAT5 cable to connect “Net Port B” output to the "Net Port A” input of the next sub-ECS. Close the loop by connecting the last ECS to the first one.

Note: this is not a network but a link: The maximum cable length is 10 meters between two ECS.

3) RS485 CONNECTORS

Here starts the RS485 network (connection for PPM and/or URC):

• Power: + and –

• DATA: A and B

The RS485 port at the rear side of the unit is used for additional units like the URC (Universal Remote

Controller) or the PPM (Programmable Paging Microphone).

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Note: The maximum cable length depends on the type of cable used and should not exceed 300 m

with standard CAT5. This restriction is mostly due to supply voltage drops with low wire gauge in longer cable runs and can be obviated by using external power supplies (Junction Box) or higer diameter cables. However, we have seen data cable lengths up to 850m working just fine. You will have to put

external power every three remote devices (PPM or URC) or every 300m.

Note: It is recommended to not put more than 8 remote devices (PPM and/or URC) on one ECS. You

can of course use more remote devices (ECS can manage up to 16 PPMs), but this increase the response time of the devices and you will have to be very carefull in the wiring by adding external power supply.

4) CONTROL INPUT CONECTORS

Either connects logical input (TTL IN, dry contact) or analogical input (10 k Ohm potentiometer). Simply connect the switch or relay or potentiometer between the number (1 and 8) and the G (ground). The number indicates which control logic channel will be used (when you define the action of the control input).

If you use control Input as analogue input:

You can connect Remote Controllers RAC5 or RAC8. Or a simple variable resistor (10K) to the analogue control inputs as follows:

You can reduce the step by putting a 100uF capacitor in parallel across the contact.

If you use control Input as Logic input:

The logic In is momentary activate when the contact is closed.

Simple activation of the TTL inputs can be made like this:

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5) LOGIC OUTPUTS CONNECTORS

The Contact closes when the Logic Output is active.

The logic outputs are simple dry contact or relay contact, with a common rail. The common rail is linked to the ground. Caution: Do not connect voltage (24V) to the common rail.

No voltage is provided.

Contact rating: (relays EGE type EDR201A0500) Maximum voltage 100 VDC, Maximum switching current 0.5 amps, Maximum switching power 10VA

If the RS485 bus is unused, then you can easily use the 24V DC output of the ECS to feed 8 LEDS that each have a 2k2 current limiting resistor.

6) RS232 CONNECTOR

Connect third party device (Crestron, AMX, VITY) to pilot some desired features of your ECS system by using the Ateïs Third party protocol.

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At the rear side of the ECS you also find a DB9f connector for RS232 data communication. This port can be used for transparent RS232 data multipoint communication through the network (for using with IDA4) or for 3rd party control applications.

Note: RS232 does support cable lengths up to 15 m.

Signal Text i n

1 CD carrier detect (n.c.) 2 RXD receive data 3 TXD transmit data 4 DTR data terminal ready (n.c.) 5 GND ground 6 DSR data set ready (n.c.) 7 RTS request to send (n.c) 8 CTS clear to send (n.c.) 9 RI ring indicator (n.c.)

(n.c):non connected

7) ETHERNET (RJ45) CONNECTOR

For connecting the ECS in a TCP/IP based network or directly to a computer:

• To load design in a ECS system

• To pilot ECS system

• To monitor ECS system

8) TELEPHONE CONNECTOR

There are two connectors. One is to connect the telephone line. The other is to connect a

physical telephone, allowing you to have a physical interface in more than the software interface.

9) AUDIO INPUT/OUTPUT CONNECTOR

Balanced Audio input or output:

• S = Shield

• + = Hot audio signal

• - = Cold audio signal

Input and output cards have different connector colours:

• BLACK = OUTPUT

• GREEN = INPUT

If you want to use unbalanced signal please connect the Cold (-) pin with the Shield (S) pin.

There is a hardware clip operation on input board over 15dBu.

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FRONT ACCES (LCD Screen)

You can get the access to some function and parameters of the ECS, by using the JOG-DIAL, the

ENTER button and the BACK button.

• The JOG-DIAL allows moving in the menu, or modifying a parameter.

• By pushing the ENTER button, you enter in a menu or you select a parameter. If the

screen is on rest, the ENTER button displays the root menu.

• By pushing the BACK button, you get out of a menu or you cancel the selection.

•

On rest the screen displays the ECS logo:

Click on ENTER to displays the root menu:

• Device Setting : enter in the Device Settings

• DSP function : enter in the DSP function

• Return : go back on rest

Use the JOG-DIAL to move in, and click ENTER.

Device Settings >

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Preset Inf > Information about sub-preset and master-preset

• Master Preset: at the right is displayed the current master-preset number

• Sub Preset: at the right is displayed the current sub-preset number

• Return: go back root menu

Fault > Display the current fault and status of the ECS

Network >

• Return: go back to root menu

IP Address > Here you can set the IP address of the ECS

o Edit : click here to set the IP. o Return: go back to "Network" menu

Edit > Type the IP address and click [ENTER]

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Sub Mask > Here you can set the sub-net mask of the ECS

o Edit: click here to set the mask. o Return: go back to "Network" menu

Edit > Type the sub-net mask and click [ENTER]

Gateway > Here you can set the gateway of the ECS

o Edit: click here to set gateway IP. o Return: go back to "Network" menu

Edit > Type the gateway IP and click [ENTER]

Version > Display the current version numbers

• MCU Version : displays the version of the MCU

• DSP Version : displays the version of the DSP

• Return: go back to root menu

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Temperature > Display the temperature of the ECS

• Temperature : displays the current temperature inside the ECS

• Return: go back to root menu

User MG > Allows the user management.

• ID: click here and type the ID.

• PX: click here and type the Password

• Login:

• Logout:

Date >

• Edit: click here to set the date

• Return: go back to Root menu

Time >

• Edit: click here to set the time

• Return: go back to Root menu

Device ID > Display the device ID. It's fixed.

• Return: go back to Root menu

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Reset > Allows resetting the device

• Yes: click here to confirm that you want reset the device

• Cancel: click here to not reset the device, and go back to root menu

Sensitivity > Displays the inputs sensitivity of the ECS inputs. (You cannot change them here)

• Return: go back to Root menu

Saver > Here you can choose the saving time.

• Edit: click here to set the saver time

• Return: go back to Root menu

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ACOUSTIC ECHO CANCELLATION (AEC)

ACOUSTIC ECHO EXPLANATION

In remote conference applications, reflected signals caused by acoustic echo between microphones and speakers are normal, for example, when two people communicate with each other in different places.

A's voice from the microphone will travel through the speaker in room B and reflect to the microphone. It would result in acoustic echo. The acoustic echo usually appears when microphones and speakers are in the same space. It can decrease the quality of the conversation.

The main idea of AEC is to simulate the impulse response of the echo path included space reflection and time delay. According to this concept, the audio is sampled at the Far-End signal. AEC applies the sampled signal 180 degrees out of phase with the Near-End signal to eliminate it. If the simulation is meeting to the real echo signal, the echo will be deleted and not affect the voice of the user. The following picture aims to eliminate the echo for user B. B will not hear her own voices from the speaker.

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The purpose of Ateïs AEC is for cancellation the acoustic echo in the remote conference applications. The audio quality is wide bandwidth up to 24 kHz. With the Double Talk Detection, the AEC improves the interactive communication. It can also support the maximum delay time achieved to 128ms and perform the echo cancellation efficiently.

Depending of the application, different schematic using the AEC can be made. They are explained in the following chapters.

ACOUSTIC ECHO CANCELLATION RULES

At first we have to define the signal labeling.

Signals Definitions:

Far-In signal: The audio signal source on which the echo cancellation process is applied.

Generally it's the microphone.

Far-End signal: The audio signal used as reference for the echo cancellation process.

AEC Rules:

Microphones:

Every microphone has to use the AEC before to be sent to the transmission through a mixer if necessary. Each microphone needs one AEC channels. The reference of these AEC channels is the Far-End signal after the AEC treatment.

After proper adjustment of the level (in the input component, and in the mixer) the volume control of the microphone has to be done with the Near-End Volume parameter of the AEC component.

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Audio lines:

If there are audio lines (like CD/DVD/Radio, etc) in more than the microphones, they don't need to pass through an AEC. They are directly sent to the transmission and the local amplification through mixer if necessary.

Far-End signal:

If the transmission system use a codec server, then the Far-End signal must be treated on one AEC channel. The reference of this AEC channels is the mixed signal of all the local audio sources (output of the local mixer). After proper adjustment of the level (in the input component, and in the mixer) the volume control of the Far-End signal has to be done with the Near-End Volume parameter of the AEC component.

Local amplification:

If there is a local amplification, then each microphone has to pass through a local echo suppressor before to be sent to the local amplification.

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AEC WITH TWO DEVICES

Schematic:

In a system without video codec, each side receives the incoming signal called "far-end", coming from the other side. Without AEC, this signal contains the audio sources of the other side (microphones, and maybe PC, DVD, etc) and the echo due to the acoustic reflections on the other side. The idea of the AEC is to send a proper signal to the other side. The AEC simulates the local reflections, and removes them from the signal to be sent. The AEC component modifies the signal of the local microphone by using the far-end signal as reference.

This is an example of a standard point to point system:

On the both sides, there is an AEC component on the microphones, in order to send a proper signal to the other side. The reference signal of the AEC is the signal coming from the other side, called far-end signal.

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Design in the ECS:

Regarding the schematic of a point to point system, here is the corresponding design which must

be created with Ateïs Studio software.

With two ECS, the same configuration is stored into each ECS. There are linked together with two audio signals in the both directions.

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The complete system with two ECS is linked like this:

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AEC WITH ONE DEVICE

Schematic:

The only difference with the previous chapter, is that here the both AEC components are in the same ECS.

The schematic is the same, only the room separation has been moved:

There is an AEC component on the both microphones, in order to send a proper signal to the other side. The reference signal of the AEC is the signal coming from the other side, called far-end signal.

Design in the ECS:

Regarding the schematic of a point to point system, here is the corresponding design using one

ECS device. It must be created with Ateïs Studio software.

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With one ECS device, the both configuration are mixed in one design. The signal coming from the remote room B contain the audio source of the room B, without AEC treatment. The signal sent from room A has to be amplified and send to the loudspeakers.

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AEC WITH CODEC SERVER

Schematic:

As internet doesn't provide the multi-cast, the most of time, a multi-point conference system use a video codec server. Each client of this system sends its audio signal to the video codec server.

The video codec server mixes all the received signals in one and sends it to each client of the system. That means that each the clients receive the audio signal of every client and also its own signal. It's done like this because otherwise it would take too much process time to send only each signal to its target.

In this following schematic you can that the Client 1 send its signal to the codec server and receive a mixed signal of the client signal 2,3 and 4, including its own signal 1.

The first using of the AEC is to send a proper signal to the codec server. It simulates the local reflections, and removes them from the signal to be sent. The AEC component modifies the signal of the local microphone by using the far-end signal as reference.

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As each client receives its own signal (mixed with the others) then each client has to use an AEC to remove its own signal from the received signal, called "far-end". This is the second using of the AEC.

In a system with video codec, each client has to send a proper signal to the video codec and also to remove its own signal from the incoming signal far-end.

The following schematic includes all the required functions decrypted above on a client side for a system with video codec.

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Design in the ECS

Regarding the schematic of a system using a codec server, here is the corresponding design

which must be created with Ateïs Studio software.

The AEC component provides four independent channels. As we need one channel for each microphones signal (if there are several local microphones) and one for the far-end signal, the using of one AEC component is enough.

Schematic:

Design:

It's not easy at first sight, but this design is exactly corresponding to the schematic. The AEC channel 1, linked to the local microphone use the far-end signal as reference. The AEC channel 2, linked to the local loudspeaker use the microphone signal (far-in) as reference.

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AEC WITH CODEC SERVER AND LOCAL AMPLIFICATION

Schematic:

With the AEC, the local reflexions are removed on the signal sent to the codec server. If the client wants to hear its own microphone signal by using a loudspeaker (and of course an amplifier), then in order to avoid the local echo reflexion on the local loudspeaker, it is needed to use also the local echo suppressor component (please see Local Echo Suppressor chapter for detail about this component).

Design in the ECS:

Regarding the schematic of a system using a codec server and a local amplification, here is the

corresponding design which must be created with Ateïs Studio software.

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AEC WITH FULL EXAMPLE (2 mics, 2 lines, local amplification)

In this example we include 2 microphones and 2 audio sources (Radio and CD) in a system with codec server.

Microphones:

Every microphone has to use the AEC before to be sent to the mixer 1 for the transmission. One

microphone needs one AEC channels.

The reference of these AEC channels is the Far-End signal after the AEC treatment.

If there is a local amplification, each microphone has to use a local echo suppressor before to be

sent to the mixer 2 for the local amplification.

Audio line:

The audio sources which are not microphones don't need use AEC.

They are directly sent to the mixer1 and 2, for the transmission and the local amplification.

Far-End signal:

If the transmission system use a codec server, then the Far-End signal has to use one AEC

channel.

The reference of this AEC channels is the mixed signal of all the local audio sources (output of

mixer 1).

Schematic:

As the AEC component contains four channels, all these three AEC modules (for mic 1, mic 2 and far-end signal) are in one AEC component.

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Design in the ECS:

Regarding the complete schematic above, here is the corresponding design which must be created with Ateïs Studio software.

The AEC component provides four independent channels. As we need one channel for each microphones signal and one for the far-end signal, the using of one AEC component is enough.

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AEC COMPONENT FUNCTIONS

The AEC component provides four fully independent channels. On the component, each channel has one input called "far-in", one output, and one reference called "far-end". The far-end signal will be removed of the far-in signal, in order to send a proper signal to the other room.

AEC Coefficient / Reset

On each channel you can independently activate the echo cancellation process by setting the "AEC Coefficient" parameter on "Perform". You can also let it working without the process activates, by keeping the AEC coefficient by choosing "Hold". Of course, you can deactivate it on "Off".

The reset button is used to reset the AEC coefficient.

Volume display and control

The far-end volume and near-end volume vu-meters display respectively the far-end and near-end volume level. If you want to modify the volume of a source (near-end inputs), then you have to use the "Near-End Level" knobs in the AEC component. When the system is properly adjusted, it is not advised to change the volume by using another parameter than this one.

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Non Linear Process (NLP)

The microphone captures the sound coming from the loudspeaker and also the speaker's voice.

If on the microphone capsule, the sound pressure level of the loudspeaker sound is near of the sound pressure level of the speaker's voice, then the AEC component won't be able to recognize them. In this case the AEC process is stopped and the non-linear process is activated.

All you have to do is to choose the type of the nonlinear process, soft, medium, aggressive or off.

The NLP threshold parameter is not available, the threshold is now automatically set.

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AEC COMPONENT PARAMETERS

This component is used to avoid reflected signals caused by acoustic echo between microphones and speakers, in remote conference applications.

The control window of the "AEC" module is opened by a double click on the icon in the DESIGN AREA and appears like this: AEC Parameters

Parameter Range Comment

Echo Detect led This led lit when an echo is detected.

Signal led This led lit when an audio signal is detected.

ERLE (dB) Echo Return Loss Enhancement.

The decrement of echo, it indicates the quality of the AEC.

AEC Coefficient Selector:

Perform,

Bypass, Hold

Reset Button Reset the echo cancellation on the channel

Far-End Volume

Near-End

Volume (dB)

Near-End Level -90 to 20 (dB) volume adjustment of the near end audio signal

NLP Selector:

NLP Threshold

(dB)

Noise

Reduction

Enable

NR Threshold -90 to 20 (dB)

Vu-meter

(dB)

Vu-meter

(dB)

Soft,

Medium,

Aggressive,

Off

-90 to 20 (dB) The threshold value of the Nonlinear Process.

Button Enable the noise gate

Function supplied for AEC controlled status. It offers 4 functions:

• Perform: turn on the AEC function

• Bypass: turn off the AEC function

• Hold: hold the parameters of the echo

coefficient

Audio volume of the Far-end audio signal.

Audio volume of the Near-end audio signal.

The purpose is to suppress the remain echo in complex environment.

It offers four functions：

• off: NLP function off

• soft： weak intensity of remain

echo suppression.

• medium： medium intensity of

remain echo suppression.

• aggressive：aggressive intensity of

remain echo suppression.

Threshold of the noise gate

NonLinear Process.

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AEC SETUP PROCEDURE

The design must be stored into the ECS, and your PC on which Ateïs Studio is running must be On-line (live) with the ECS. Now you can start the setup procedure.

You can have different kind of ECS use, but the setup procedure idea is the same for all.

For example let's take this complete configuration:

This procedure is decrypted on several pages but the idea is simple:

• Turn off local amplification

• Bypass the AEC

• Adjust signal coming from the other side

• Adjust local sources

• Adjust the local echo suppressors of the local sources

• Active the AEC

Turn off local amplification

1) If you have a local amplification of the local sources then turn off the local application. Only the far end signal is allowed in the speakers.

Mute the local sources in the mixer of the local amplification and just enable the far-end signal coming from the other side.

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Bypass the AEC

2) In the both AEC, set the AEC coefficient function to "Bypass".

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Adjust signal coming from the other side

3) Make proper adjustment of the input sensitivity of the far-end signal coming from the other side on the input component.

4) In the AEC 2, adjust the volume level of far-end signal coming from the other side with NearEnd parameter.

5) Make proper adjustment of the volume level of the Mixer until the audio from the other side is clear and without feedback noise.

6) In the AEC 2, make proper adjustment of Background Noise Threshold, then To Press Noise reduction Enable button to make noise reduction working.

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Adjust local sources

7) Make proper adjustment of the input sensitivity of the local microphones on the input component.

8) In the AEC 1, adjust the microphone volume level with Near-End parameter.

9) In the AEC 1, make proper adjustment of Background Noise Threshold, then To Press Noise reduction Enable button to make noise reduction working.

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Adjust the local echo suppressors of the local sources

If you have a local amplification, the purpose of this step is to turn on the local amplifier application and to turn off the signal coming from the other side. Only the far-in signals (microphones) are allowed in the speakers.

10) Enable the local sources in the mixer of the local amplification mute the far-end signal coming from the other side.

11) Make adjustment of Pre-Threshold of LES (Maximum audio level).

12) Make adjustment Post-Threshold of LES (Minimum audio level).

By default, the Pre-Threshold and Post-Threshold are set as -22dB and -40dB in table microphones. If output volume of near end in LES is increased, it is essential to decrease Pre-Threshold level to suppress the local audio echo feedback.

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Active the AEC

13) Enable the local sources in the mixer of the local amplification.

14) In the both AEC, set the AEC coefficient function to "Reset".

15) In the both AEC, set the AEC coefficient function to "Perform".

The system is ready.

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TELEPHONE CARD

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By linking the "Line" connector of the ECS to a telephone line, and by using a microphone and a

loudspeaker, then you can use the ECS as a telephone interface.

The interface of this telephone is available by using the dedicated components in Ateïs Studio

software, which are TC transmit and TC receive.

In option, you can also connect a telephone to the "Set" connector of the ECS allowing you to

have a physical interface.

The telephone line bandwidth is around 300hz – 3.3khz. It's due to its narrow bandwidth we

simulate.

The sound to be up to 6.6 kHz for comfortable listening. But there is a distortion resulting in a

metallic sound. You can put a low-pass filer to cut above 3.5kHz, that will help.

Schematic:

• Connect the direct telephone line or a line coming from a PABX central to the "Line" RJ11

connector of the ECS.

• In option, you can also connect a analogue telephone to the "Set" RJ11 connector of the

ECS.

• Connect a microphone or audio source to an input of the ECS. It will be used as

telephone microphone.

• Connect a listening system (loudspeaker) to an output of the ECS. It will be used as a

telephone speaker.

Analogue

telephone

Direct phone line

PABX central

Amplified

Loudspeaker

Microphone

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Design in the ECS :

Regarding the basic schematic above, here is the corresponding design which must be created

with Ateïs Studio software.

The TC Transmit component is the interface between the local microphone (or audio sources) and the telephone line. Its input has to be linked to an input component where the microphone is physically connected to the ECS.

The TC Receive component is the interface between the local listening system (loudspeaker) and the telephone line. Its output has to be linked to an output component where the listening system is physically connected to the ECS.

You can use any input/output channels of the ECS.

TELEPHONE CARD COMPONENT

The telephone card component allows using the ECS as a telephone interface.

In the ECS configuration design, the telephone card consist of a TC transmit component and a TC receive component. When your PC with Ateïs Studio software is connected live with the ECS, the TC transmit and TC receive component offer a telephone interface allowing you to manage the telephone call.

TC Transmit Component

The TC transmit component provides the telephone keypad with the standard functions of a telephone.

The component is split in two parts:

The "User Telephone Area", allowing you to type a telephone number, to start the call and to stop it.

The "Machine status Area", which contains several status led showing you the current state of

the interface.

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User Telephone Area Parameters

Parameter Range Comment

Send Button Start the telephone call

Finish button Stop the telephone call

Current Number display Display the current target telephone number

Last Number display Display the previous target telephone number

Back Button Not available

ReDail Button Re-start the last telephone call

Flash Not available

Machine Status Area Parameters

Parameter Range Comment

Dialling led Light when the call is established, until the end of the call.

Connect led

Ringing led Light when the telephone is ringing on the other side

Busy led Light when the telephone line is busy on the other side

Set led Light when you pick up the telephone (if there is one)

MCU led Not available

Ready led Light when the telephone line is properly connected to the ECS

Fault led Light when the telephone line is not connected to the ECS

Mute button Mute the telephone line (mic)

Level -15 to 12(dB) Control the volume level of the microphone

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TC Receive Component

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The TC receive component allows to see the incoming call with the DTMF Decoder and provides also some controls. Here you can adjust the audio level of the incoming caller signal and of the incoming ringing signal that you will hear in the speaker connect to the TC receive output. The auto-answer function is available, allowing the ECS to automatically answer the incoming call.

A Noise suppression can be activated, and also a line echo cancellation in order to reduce the noise and the echo due to the telephone line.

Machine Status Area Parameters

Parameter Range Comment

Caller signals / Mute Button/led Mute the caller signal

Caller signals / Level -15 to 12(dB) Level control of the caller signal

Ring signals / Mute Button/led Mute the ring signal

Ring signals / Level -15 to 12(dB) Level control of the ring signal

Auto-answer

Noise suppression Button Active the noise suppression on the caller signal

DTMF decoder /

enabled

DTMF using Light when a DTMF signal is detected

DTMF history Display the last DTMF signal received

Line echo cancellation Button Active the echo cancellation on the line

Button/led Enable the DTMF decoder

Active the auto-answer function, by selecting after how many rings the ECS will answer.

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LOCAL ECHO SUPPRESSOR

The local echo suppressor is needed if a microphone is amplified and its signal is sent to a loudspeaker for a local listening.

In this case two problems may appear. There is a risk of feedback Larsen, when the microphone receives its own sound highly. The signal will be indefinitely amplified, which result in a high frequency signal on the loudspeaker, very uncomfortable, called Larsen.

The second problem that may appear is the residuals echo. These echoes are due to the local reflections.

As the sound in the room is sent to different directions, it reflects in the wall, the ceiling or the floor. So the sound use different ways between the loudspeaker and the microphone, these ways have different lengths that result by several little echoes.

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Schematic:

To avoid the problems explained above, a local echo suppressor is added between the microphone and the listening system. The local echo suppressor component is split in two parts. The Pre-Processing part take care of the residual echoes, and the Post-Processing part take care of the feedback.

Design in the ECS:

Regarding the basic schematic above, here is the corresponding design which must be created with Ateïs Studio software.

The input of the Local Echo Suppressor has to be linked to an input component where the microphone is physically connected to the ECS.

The output of the Local Echo Suppressor has to be linked to an output component where the listening system is physically connected to the ECS.

You can use any input/output channels of the ECS.

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LOCAL ECHO SUPPRESSOR COMPONENT

This component is designed for suppressing local Echo or feedback.

It's shared in two parts, pre-processing and post-processing. The Pre-Processing limits the level to a threshold above which the gain will be reduced. This is to avoid feedback. The Post-Processing removes the echo below a threshold. This is to avoid the residual echo.

The control window of the "Local Suppressor Echo" module is opened by a double click on the icon in the DESIGN AREA and appears like this:

Parameter Range Comment

Bypass Button Switches off the component operations

Gain Reduction Display the gain of output volume.

Pre-Processing > Threshold

(dB)

Pre-Processing > Attack Time

(ms)

Pre-Processing > Release Time

(ms)

Post-Processing > Threshold

(dB)

Post-Processing > Attack Time

(ms)

Post-Processing > Release Time (ms) 100 to 5k

-40 to 0 (dB)

1 to 100

(ms)

100 to 5k

(ms)

-40 to -20 (dB)

1 to 100

(ms)

Local Echo Suppressor Parameters

When input volume is bigger than Pre-Processing Threshold ,it will Reduce the volume to Threshold.

The time needed to change the volume from original level to the expected level.

The time needed to change the volume from expected level to the original level.

When input volume is smaller than Post-Processing Threshold ,it will suppress the residue echo sound.

The time needed to change the volume from original level to the expected level.

The time needed to change the volume from expected level to the original level.

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ADDITIONAL DEVICES FOR ECS SYSTEM

To maintain simple, secure and intuitive interfaces for operators, the ECS offers different types of

remote controllers:

• Universal Remote Control (URC)

• Programmable Paging Microphone (PPM, PPMTouch)

• RAC5 or RAC8

• To connect several devices on a ECS It may be helpful to use a Junction Box (JB)

Note: It is recommended to not put more than 8 remote devices (PPM and/or URC) on one ECS.

Putting more will increase the time response of the URCs and/or PPMs.

URC (UNIVERSAL REMOTE CONTROL)

URC can be fully programmed via ECS software to adjust every setting you want: volume, mute,

preset, components' adjustments... This remote device is connected to the ECS via the RS485 port.

PPM

Allow you to have up to 64 buttons (with additional Keypad). With the ECS Software you can select in which area(s) (outputs) the microphone will be heard when you press a PPM's key. You can also define pre or post chime when an announcement is done. This remote device is connected to the ECS via the RS485 port.

The PPM has an Omni directional microphone capsule.

PPM-SP (stacking paging)

Same features as the PPM and a small memory (2min audio) in the PPM-SP allow storing the message if the PPM-SP cannot rout the message to the desired zone. When the zone becomes available the message will be played.

The PPM has a Cardio directional microphone capsule and an enhanced audio quality.

If the PPM-SP is linked to an additional keypad V2, the keypad is able to start messages.

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RAC (REMOTE ACCESS CONTROL)

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Allow using analogue inputs for selecting a channel among 5 or 8 and setting the volume.

• RAC5 - Wall-mounted level and 5 sources selectors

• RAC8 - Wall-mounted level and 8 sources selectors

JB (JUNCTION BOX)

Easy chain connection of ECS peripherals (URC and PPM), using standard CAT5 cables.

KEY FEATURES:

• 5 x RJ45:

1) Connection to previous JB (or ECS bus on the first JB)

2) RS485-SIDE for URC connection

3) Easy connection to a Master PPM using the supplied 10 pins cable.

4) Connection to first Slave PPM (feature not available by now)

5) MAIN OUT connection to next JB

• 2 internal screw connectors for 0 dB audio:

• audio output from PPM microphone --> Audio Output (connect to the Audio In of the ECS)

• audio input to PPM speaker --> Audio Input (connect to the Audio Output of the ECS, if needed)

• 1 input for additional 24V power supply. (Depending on distance between ECS and

PPM/URC you will have to put an external power supply)

• 1 internal switch for PPM Master or Slave selection. (Slave features are not available for

the moment)

• 1 internal switch for System or Local power supply selection.

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Remote Devices Hardware Connections

Because of the bus 485 and the audio, the connection of several PPM is not easy. You normally have to create a bus with the RS485 (data and power) by using junction box (daisy-chain).

All audio from PPM must be sent to the LAP. Each Junction box has an audio output which is the microphone signal of the PPM connected to the junction box. Connect audio output from each junction box to an audio input of the ECS.

Each Junction box has also an audio input, used to get the audio from the ECS and sent it to the PPM speaker.

Only for the first PPM/JB : The audio of the first PPM is already on the RJ45 linked to the ECS, so you can either use the audio coming from the RJ45 or the audio coming from the JB audio output.

In summary:

• 485 : daisy chain, datas and power go from the ECS to the first JB (or PPM) then from

the first JB (PPM) to the second, etc.

• Audio: "star" connection, Each microphone and/or speaker is connected to an input and/or

output of the ECS

For other type of connection (Star connection, each PPM are directly connected to the ECS) we cannot ensure a proper working.

Note: it is advised to not put more than 8 PPMs and or URCs on one ECS. It is working with up to 16 PPM but the response time is increased and you will have to use external power supply.

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Connection example for one PPM with JB

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Connection example for several PPMs with JB

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Rj45 pin out

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For practically all the wiring you'll need straight CAT5 cable (4 pairs):

With PPM, a straight CAT5 cable 5 pairs is needed (provided with PPM):

Junction Box

AUDIO

OUTPUT

S - +

SLAVE

PPM

S - +

AUDIO

INPUT

RS-485

MAIN-IN

AUDIO

OUT

RS-485

SIDE

LOCAL

POWER

(24 VDC)

RS-485

MAIN-OUT

Master S lave

MASTER

PPM

GND 24VDC <- from UAP

Line OUT (+ -) 24VDC <- from adapter

Line IN (+ -) 24VDC

Slave RS-485 (A B) Master RS-485 (A B)

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Connectors:

AUDIO OUTPUT (line out): This signal comes from the PPM's microphone to be connected in a ECS

input (Shielded audio cable)

RS-485 MAIN-IN + AUDIO OUT (To ECS): It is the BUS 485 to be connected into the ECS. You can also have access with this JB output to the PPM's microphone signal (to be connected to a ECS input)

Pin 1. RS-485 B Pin 2. RS-485 A Pin 3. Line in Pin 4. 24Vdc Pin 5. Ground Pin 6. Line in + Pin 7. Line out Pin 8. Line out +

RS-485 SIDE: BUS 485 to connect URC

Pin 1. RS-485 B Pin 2. RS-485 A Pin 3. NC Pin 4. 24Vdc Pin 5. Ground Pin 6 ~ 8. NC

LOCAL POWER (24VDC):To gives power to the JB through a local power supply

MASTER PPM (CAT5 5 pairs): To connect the PPM

Pin 1. Slave RS-485 A Pin 2. 24Vdc Pin 3. Master RS-485 Pin 4. Master RS-485 A Pin 5. Line out + ( PPM Mic) Pin 6. Line out - (PPM Mic) Pin 7. Line in + (PPm speak.) Pin 8. Line in – (PPm speak.) Pin 9. Ground Pin10. Slave RS-485 B

RS-485 MAIN-OUT (To next Master): To connect another JB (daisy-chain)

Pin 1. RS-485 B Pin 2. RS-485 A Pin 3. NC Pin 4. 24Vdc Pin 5. Ground Pin 6 ~ 8. NC

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Cat5

TO R

S-485

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AUDIO INPUT: To send audio signal from a ECS output to the PPM speaker (Shielded audio cable)

SLAVE PPM (CAT5 5 pairs): NOT AVAILABLE FOR THE MOMENT (to connect Slave PPM)

Pin 1. Slave RS-485 B Pin 2. Slave RS-485 A Pin 3. Line in Pin 4. 24Vdc Pin 5. Ground Pin 6. Line in + Pin 7. Line out Pin 8. Line out +

Internal Switches: POWER S/W: To choose between local power supply or the ECS power supply

Master/Slave:NOT AVAILABLE FOR THE MOMENT (chose if the PPM connected to this JB is a Master

or a Slave)

LEDs: POWER SYSTEM: Lights if the power comes from a local power supply POWER LOCAL: Lights if the power comes from ECS READY: Lights if the Junction Box is ready to work

Connect JB to ECS

Connect URC to ECS with JB

URC

Connect URC to ECS

4 pairs

SIDE

of the JB

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Connect PPM to JB

Simply use the CAT5 5 pairs provided with your PPM or a standard CAT5 4 pairs (Straight): from PPM to MASTER PPM of the JB. If you use a CAT5 4 pairs you probably will hear some data into the speaker of the PPM. This is due to the internal wiring (if you do not use speaker, simply disconnect it).

Connect PPM to ECS

There is two way to connect one PPM

1) Use a 4 pairs between the ECS and the junction box, and then connect the PPM to MASTER PPM of the junction box with a 5 pairs..

2) Use a CAT5 5 pairs directly between the PPM and the UAP, as follow.

Connect RAC