audio-technica ATUC-50 Digital Wired Conference System Instructions

June 17, 2024
Audio-Technica

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audio-technica ATUC-50 Digital Wired Conference System

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Product Information

Specifications

  • Main Unit: ATUC-50
  • Conference System Type: Digital Wired Conference System
  • Gooseneck Microphone with LED Ring: ATUC-M43H/58H/M32L
  • Discussion Unit: ATUC-50DU
  • Interpretation Unit: ATUC-50INT
  • Control Unit: ATUC-50CU
  • Integration Unit: ATUC-50IU
  • Link Extender: ATLK-EXT165
  • IR Transmitter Unit: ATUC-IRA
  • IR Distributor: ATUC-IRD
  • Charger: ATCS-B60

Product Usage Instructions

ATUC-50 System

Example of Wired System Connections

The ATUC-50 system requires the following connections:

  1. Connect the 50DU/INT to the 50CU using appropriate cables.
  2. Connect multiple 50DU/INTs together using the provided cables.
  3. Connect the microphone (ATUC-M) to the 50DU/INT.
  4. Connect an amplifier to the system.
  5. Turn on the 50CU and test the 50DU operations.
  6. Connect the system to a network.
  7. Connect a computer or mobile device to the network.

ATUC-IR System

Example of IR System Connections

The ATUC-IR system requires the following connections:

  1. Connect the IRA and IRCU using appropriate cables.
  2. Connect the microphone (ATUC-M) to the IRDU.
  3. Start the IRDU.
  4. Set the Device ID for the IRDU.

ATUC-50/IR Hybrid System

Example of Hybrid System Connections

The ATUC-50/IR hybrid system requires a combination of wired and IR system connections. Please refer to the manual for detailed instructions on how to set up the hybrid system.

Specifications

The specifications for the ATUC-50 system are as follows:

  • Main Unit: ATUC-50
  • Conference System Type: Digital Wired Conference System
  • Gooseneck Microphone with LED Ring: ATUC-M43H/58H/M32L
  • Discussion Unit: ATUC-50DU
  • Interpretation Unit: ATUC-50INT
  • Control Unit: ATUC-50CU
  • Integration Unit: ATUC-50IU
  • Link Extender: ATLK-EXT165
  • IR Transmitter Unit: ATUC-IRA
  • IR Distributor: ATUC-IRD
  • Charger: ATCS-B60

Instruction manual – Main Unit Edition –
ATUC-50
Digital Wired Conference System
Gooseneck Microphone with LED Ring ATUC-M43H/58H/M32L Discussion Unit ATUC- 50DU Interpretation Unit ATUC-50INT Control Unit ATUC-50CU Integration Unit ATUC-50IU Link Extender ATLK-EXT165
ATUC-IR
Hybrid Infrared Conference System
Gooseneck Microphone with LED Ring ATUC-M43H/58H/M32L IR Discussion Unit ATUC- IRDU Hybrid Control Unit ATUC-IRCU
Hybrid Control Unit (Dante-Enabled) ATUC-IRCUDAN
IR Transmitter Unit ATUC-IRA
IR Distributor ATUC-IRD Charger ATCS-B60
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Table of Contents

Introduction …………………………………… 4
About this manual………………………………………….. 4 About the information in this manual ………………………………. 4 About the configuration of this manual…………………………….. 4 About registered trademarks and copyrights …………………….. 4 Included accessories for the ATUC50CU ………….. 4 Included accessories for the ATUC50IU …………… 4 Included accessories for the ATLKEXT165 ……….. 4 Included accessories for the ATUCIRCU/IRCUDAN………………………………………. 4 Included accessories for the ATUCIRDU…………… 5 Included accessories for the ATUCIRA …………….. 5 Included accessories for the ATCSB60 …………….. 5 System placement ………………………………………….. 5 Installing the CU(s) in a rack…………………………………………… 5 Unbalanced connection …………………………………………………… 5 AC power cord connection………………………………………………. 5 When cleaning the units………………………………………………….. 5
About This Conference System…………… 6
Features ………………………………………………………… 6 Features of ATUC-50/ATUC-IR system …………………………… 6 About Audio-Technica LINK …………………………………………… 6 Features of ATUC- 50CU …………………………………………………. 6 Features of ATUC-50DU/INT ………………………………………… 6 Features of the ATUC-IRCU/IRCUDAN …………………………. 6 Features of ATUC- IRDU…………………………………………………. 7 Features of ATUC-IRA ……………………………………………………. 7 Features of ATUC-50IU ………………………………………………….. 7 Features of ATLK- EXT165………………………………………………. 7 Features of ATUC-M43H/58H/32L ………………………………… 7 Optional products (sold separately by Audio Technica) …….. 7
ATUC-50 System ………………………………. 8
Example of wired system connections……………… 8
Part Names and Functions ………………… 9
ATUC50CU…………………………………………………….. 9 Front panel …………………………………………………………………….. 9 Rear panel…………………………………………………………………….. 11 ATUC50DU ………………………………………………….. 12 ATUC50INT………………………………………………….. 13 Common to ATUC50DU/INT ………………………….. 14 ATUCM ……………………………………………………….. 14 ATUC50IU ……………………………………………………. 15

ATLKEXT165………………………………………………… 21 Changing settings from ATUC50CU ………………. 22 Entering letters …………………………………………….23 Overview of the Interpretation Unit (ATUC50INT) ……………………………………………….. 24
Wired System Connections and Configuration ……………………………….. 26
Connecting devices ………………………………………. 26 1 Connecting 50DU/INT to 50CU………………………………. 26 2 Connecting the 50DU/INTs together………………………… 27 3 Connecting the microphone ATUC-M to the
50DU/INT ……………………………………………………………… 37 4 Connecting an amplifier …………………………………………… 37 5 Turning on the 50CU and testing 50DU operations ……. 37 6 Connecting to a network ………………………………………….. 38 7 Connecting a computer or mobile device to a
network …………………………………………………………………… 38
ATUC-IR System……………………………… 40
Example of IR system connections …………………. 40
Part Names and Functions (ATUC-IR System) …………………………… 41
ATUCIRCU/ATUCIRCUDAN …………………………… 41 Front panel …………………………………………………………………… 41 Rear panel…………………………………………………………………….. 43 ATUCIRDU …………………………………………………… 44 Range of light reception ………………………………………………… 46 ATUCM ……………………………………………………….. 46 ATUCIRA ……………………………………………………… 47 ATUCIRD……………………………………………………… 48 ATCSB60 ……………………………………………………… 49 Using the Charger …………………………………………………………. 50 Using Dante …………………………………………………. 51 Connecting IRCUDAN in a Network ……………………………… 51 Changing settings on the ATUCIRCU/ATUCIRCUDAN …………………………… 54 Entering letters …………………………………………. 55

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IR System Connections and Configuration ……………………………….. 56
Connecting devices ………………………………………. 56 1 Connecting IRA and IRCU……………………………………….. 56 2 Connecting the microphone ATUC-M to the IRDU …… 56 3 Starting the IRDU ……………………………………………………. 57 4 Setting Device ID for IRDU ……………………………………… 57
ATUC-50/IR Hybrid System ………………. 59
Example of hybrid system connections ………….. 59
Hybrid System Connections and Configuration ……………………………….. 60
About Wired System and IR System Connections and Configuration …………………….. 60
Information…………………………………… 63
Troubleshooting …………………………………………… 63 ATUC-50CU/ATUC-IRCU/ATUC-IRCUDAN ……………… 63 ATUC-IRCUDAN…………………………………………………………. 64 ATUC-50DU/INT………………………………………………………… 64 ATUC-50IU …………………………………………………………………. 65 ATLK-EXT165 ……………………………………………………………… 65 ATUC-IRDU ………………………………………………………………… 65 ATUC-IRA …………………………………………………………………… 66 Error messages …………………………………………….. 67
Specifications ……………………………….. 71
ATUC50CU specifications……………………………… 71 General specifications …………………………………………………… 71 Input/output specifications …………………………………………… 72 ATUC50DU/INT specifications ………………………. 73 General specifications …………………………………………………… 73 Input/output specifications …………………………………………… 74 ATUC50IU specifications ………………………………. 75 General specifications …………………………………………………… 75 Input/output specifications …………………………………………… 76 ATLKEXT165 specifications…………………………… 77 General specifications …………………………………………………… 77 ATUCM43H/58H specifications ……………………… 78 ATUCM32L specifications …………………………….. 79 ATUCIRCU/ATUCIRCUDAN specifications ……… 80 General specifications …………………………………………………… 80 Input/output specifications …………………………………………… 81 ATUCIRDU specifications ……………………………… 82 General specifications …………………………………………………… 82 Input/output specifications …………………………………………… 82 ATUCIRA specifications ………………………………… 83 Input/output specifications …………………………………………… 83 ATUCIRD specifications………………………………… 83

ATCSB60 specifications………………………………… 83

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Introduction

About this manual About the information in this manual
The images and screenshots shown in this manual may differ from the actual product.

About the configuration of this manual

In this manual, the “Main Unit Edition”, there is information about the digital wired conference system ATUC-50 and the hybrid infrared system ATUC-IR products. For how to use Web Remote, see the ” Web Remote Edition”. For how to install ATUC-IRs, see the “ATUC-IR Installation Edition”.
Device names The device names are abbreviated as follows. · 50CU: “Control Unit” ATUC-50CU · 50DU: “Discussion Unit” ATUC-50DU · 50INT: “Interpretation Unit” ATUC-50INT · ATUC-M: “Gooseneck Microphone with LED Ring” ATUC-
M43H/ATUC-M58H/ATUC-M32L · 50IU: “Integration Unit” ATUC-50IU · EXT: “Link Extender” ATLK-EXT165 · IRCU: “Hybrid Control Unit” ATUC-IRCU · IRCUDAN: “Hybrid Control Unit (Dante-Enabled)” ATUC-
IRCUDAN · IRDU: “IR Discussion Unit” ATUC-IRDU · IRA: “IR Transmitter Unit” ATUC-IRA · IRD: “IR Distributor” ATUC-IRD · B60: “Charger” ATCS-B60

Some abbreviated names are used as follows. CU: W hen indicating the ATUC- 50CU, ATUC-IRCU, and ATUC-
IRCUDAN collectively DU: W hen indicating both the ATUC-50DU and the ATUC-IRDU

Symbols

Indicates the page(s) where you can find more detailed

or related information.

NOTICE Indicates a risk that may result in malfunction or damage to the device.

Indicates supplementary information as well as tips & advice for operations.

[ ]

Indicates menu items on the Web Remote screen.

Operations on mobile devices
Operations in this manual assume that you are using a computer as a control device. Alternatively you can use a mobile device such as a tablet. Instead of clicking or double-clicking, operate the application by tapping.

About registered trademarks and copyrights
· Apple, the Apple logo, iPad and Mac OS are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc.
· Google Play and the Google Play logo are registered trademarks or trademarks of Google Inc.
· Other product names, service names, logos and/or company names used in this manual are trademarked and copyrighted properties of their respective owners and/or licensors.
® In this manual, the TM and mark may not be specified.
Included accessories for the ATUC-50CU
· AC power cord · Euroblock connector (9 pieces)
Included accessories for the ATUC-50IU
· Euroblock connector (13 pieces (Green x 3, Black x 10))
Included accessories for the ATLKEXT165
· Euroblock connector · Power cable · Table mount kit (Table mount x 2, Screw x 4)
Included accessories for the ATUC-IRCU/IRCUDAN
· AC power cord · Euroblock connector (9 pieces)

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Included accessories for the ATUC-IRDU
· Rechargeable battery cover (2 pieces)
Included accessories for the ATUC-IRA
· Mounting bracket (1 piece) · Fastening screws for mounting bracket (2 pieces)
Included accessories for the ATCS-B60

AC power cord connection
Be sure to connect the AC power cord into a properly grounded wall outlet. Improper grounding can cause electrical shock.
When cleaning the units
Do not use any solvents or chemicals such as benzine, thinner, alcohol or electrical contact cleaner and protector. Doing so may cause deformation, damage and malfunction of the units.

  • AC adapter
    System placement
    Installing the CU(s) in a rack
    Rack requirements for the CU · EIA standard compatible 19-inch rack · 1U-size rack mounting · Rack equipped with safety guardrails to support the CU and a
    board on which the CU is to be placed
    When installing the CU(s) in a rack, keep the temperature within the rack below 45°C (113°F). High temperature may damage the internal components, causing a malfunction. Leave a space of 10cm or more on each side (top, right and left, rear) between the CU and other devices or the rack.
    Rack mounting angles are fixed to the CU using the following screws. When using screws other than those listed here, check the specifications. · S TIGHT tapping screws with nominal diameter 4×6mm*
  • Substitutable for M4×6mm machine screws

Unbalanced connection
Since induction noises tend to occur due to difference in electric potential of chassis: · Keep the chassis between each device at the same electric
potential. · Use the same power system. · Connect to the GND (ground) terminal or chassis ground of each
device.
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About This Conference System

Features
Features of ATUC50/ATUCIR system
· Audio processing by the feedback processor and the like enables clear- sounding conversations
· Up to 6 interpretation units (ATUC-50INT) can be connected. · The maximum number of discussion units (ATUC-50DU),
integration units (ATUC-50IU), and interpretation units (ATUC50INT) that can be connected on the IRCU is a total of 500 units (IRCU x 1 + 2 CU link units, 200 IRDU units, and 300 50DU units) and on the 50CU is a total of 300 units (for 3 CU link units). · Either daisy-chain or ring connection can be made with Cat5e or higher cables (shielded cables with conductor size of 24AWG or higher in diameter are recommended). · 3 selectable conference modes: Free Talk Mode, Request Talk Mode, and Full Remote Mode · 2-language interpretation, 3-language interpretation, and 3-language relay interpretation are supported (ATUC-50INT) · The recording function enables you to record audio onto a USB device (mass storage device) · Controllable using Web Remote and an external control device · Design with future expansion considered · Layout of hybrid infrared conference system can be easily changed and operations are flexible.
About AudioTechnica LINK
The system uses Audio-Technica’s proprietary LINK format for power supply and signal transmission between the control units and discussion units, etc.
Audio-Technica LINK is compatible with the Ethernet standards and allows a simple installation using universal Cat5e or higher cable connections. (A shielded cable with conductor size of 24AWG or higher in diameter is recommended.) Transmission of high-speed signals with low-latency allows stable control and uncompressed audio signal transmission.
Features of ATUC50CU
· Power supply and control is possible for a maximum of 100 discussion units (ATUC-50DU) (depending on the cable lengths ATLK-EXT165 may be required)
· Up to 300 discussion units (ATUC-50DU) can be connected by cascade- connection
· 4 configurable balanced matrix output plus 1 unbalanced output that outputs the same audio as Output 1
· 2 Mic/Line inputs, 2 monaural AUX inputs, and 2 return inputs

  • 2 return channels are available for both bilingual simultaneous interpretation and the language of the floor holder
    · Conference mode: Free Talk, Request Talk, and Full Remote · Priority mode: First-press priority and later-press (FIFO, LIFO)
    priority · Talk mode: Manual mode, Voice activation mode · Web Remote enables you to easily change settings and control
    attendees’ right to talk during conference · Up to 4 channels (WAV: up to 4 channels, MP3: up to 2 channels)
    can be recorded on a USB device (mass storage device) · Audio processing by the feedback suppressor and the like enables
    the control unit to deliver high-quality sound · Design with future expansion and renewal considered
    Features of ATUC50DU/INT
    · An LED ring enables power supply via 3-pin balanced connector while offering both high sound quality and user flexibility
    · Standard 3-pin microphones can be connected · A microphone pre-amplifier using discrete transistors reduces
    noise; moreover individual gain is adjustable · A high-quality and high- resolution speaker · Designed for the high sound qualities of 24 bit/48 kHz · Equipped with multiple independent indicators (microphone ring
    LED, (talk) button, multicolored LEDs on rear side of discussion unit (ATUC- 50DU)) · High-visibility indicators associated with the headphone volume adjustment buttons and monitor channel selection buttons · Optional removable bottom weight for improved stability · 2 RJ-45 terminals for connecting discussion units (ATUC-50DU); 1 expansion RJ-11 terminal for future expansions · 1 headphone output jack with a monitoring channel switch function
    Features of the ATUCIRCU/IRCUDAN
    · Updated model has expanded FPGA, and the basic functions are the same as the 50CU
    · Supports operation on wired conference systems, infrared conference systems, and hybrid conference systems
    · One system can control up to 300 discussion units (100 50DU units and 200 IRDU units, plus ATLK-EXT165 may be required depending on the number of connected units, cable lengths, and number of antennas)
    · Up to 500 conference microphones can be connected in cascade connections (300 50DU units and 200 IRDU units)
    · Dante equipped models are also available

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Features of ATUCIRDU
· One IRDU unit is shared by two people to support 2-person conversation mode. Equipped with two headphone outputs with independent volume adjustments
· Equipped with two multifunction buttons that can be flexibly changed as appropriate to user’s applications
Features of ATUCIRA
· White IR cover and slender style provide subtle design that can be installed in a variety of locations
· Using BNC terminal makes it possible to do multiplex transmissions by connecting one cable
· Reliable design prevents installation mistakes with LEDs that indicate power supply status
Features of ATUC50IU
· Discussion units that can be embedded in the ATUC-50 system · Configure the system simply by connecting the microphones,
speakers, headphones, etc. · GPIO control terminal built in for monitoring conditions and
controlling external devices · Equipped with 2 RJ-45 terminals for connecting discussion units
(ATUC-50DU), etc. · Designed for the high sound qualities of 24 bit/48 kHz · Integration unit (ATUC-50IU) can be set from the Web Remote
for the chairperson/delegate names · Conference Mode and volume can be set for each integration unit
(ATUC-50IU)

Features of ATUCM43H/58H/32L
· Equipped with an LED ring that enables power supply via 3-pin balanced connector while offering both high sound quality and user flexibility
· Structural design reduces vibration between microphone connectors and discussion units
· Adopted double layer pop filter · Improves RF measures against external radio waves · Double gooseneck design makes installation flexible (ATUC-
M43H and ATUC-M58H) · Super directional design allows capture of distant sounds (ATUC-
M32L)

Optional products (sold separately by Audio Technica)

Model number

Name

Use

ATUC-DUWT DISCUSSION UNIT Use this to improve the WEIGHT PLATE stability of discussion unit installation.

AT8643

RACK MOUNT KIT

Use this when rack mounting half-rack sized products, such as link extenders (ATLKEXT165).

Features of ATLKEXT165

· Connects to any Audio Technica device, such as a control unit (ATUC-50CU), or discussion unit (ATUC-50DU), and is equipped with two RJ-45 terminals that can expand the discussion system
· Remote mode that automatically starts from the control unit (ATUC-50CU)
· Has a standalone mode that can be started by operating the front panel
· Equipped with GPO terminal that notifies external devices when an overcurrent (2.6 A) is detected in the power supplied from RJ-45 terminals

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ATUC-50 System
Example of wired system connections

Windows/Mac
Web Remote Control

Tablet
Web Remote Control

50CU (extension)

50CU (extension)

USB device (mass storage device) to be used for recording/SFX

50CU (primary)

Microphone

CD player

AP

Router Switching hub
Amplifier

Speaker

Recorder

INT IU
EXT

50DU EXT

50DU

IU

IU

The number of connectable units differs depending on the system configuration that you are using. For more details, refer to page 28.

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Part Names and Functions
ATUC-50CU Front panel

Power switch Turns the power of the 50CU on and off.
USB terminal The following operations are possible by connecting a USB device (mass storage device) such as a USB flash drive or USB hard drive. · Recording sound · Playing buzzer and chime · Importing/exporting preset data · Firmware update
NOTICE · Supports FAT16 and FAT32 file systems · Maximum storage capacity: 2TB · Maximum file size: 2GB · Does not support USB hubs. · Do not use extension cables. · Do not attempt to use USB devices (mass storage devices) that have been cracked, deformed or repaired using adhesive tape or the like. · Do not save or create any files or folders unnecessary for this system on the USB device (mass storage device); doing so may affect system operations. · The 50CU is not compatible with USB devices (mass storage device) with special functions such as a security function.
USB access indicator Indicates the connection status of the USB device (mass storage device). · In an access state: lit green
NOTICE · Do not remove the USB device (mass storage device) while the indicator is lit green; doing so may destroy data.
REC (recording) indicator Indicates the recording status. · In a recording state: lit green · In a recording-pause state: blinks green · While not recording: remains off

NOTICE · If you remove the USB device (mass storage device) while in a recording state or recording-pause state, the recorded file may not be written correctly. Do not remove the USB device (mass storage device) during recording.
DU POWER (DU power supply) indicator · In a normal state: lit green · In an abnormal state (such as when a voltage drop occurs in the 48-V output system): blinks green · In a 50DU/INT disconnected state: remains off
DU CHAIN indicator · In a normal state: lit green · In an abnormal state (such as when 50DU communications fail): blinks green · In a 50DU/INT disconnected state: remains off
CU LINK indicator · In a CU Link state: lit green · In an abnormal state (such as when 50CU communications fail): blinks green · In a 50CU link cut-off state: remains off
Remote (remote control) indicator · In a communication state: lit green · In an abnormal state (such as when failing in external transmission retry): blinks green · In a non-communication state: remains off
SIGNAL/PEAK indicator Indicates the audio signal level as follows: ­ 60dBFS or higher: lit green ­ 20dBFS or higher: lit amber ­ 2dBFS or higher: lit red Adjust the audio signal level such that the indicator will not light red.
Display
BACK button Returns to the previous or upper screen/item. Press and hold this button to return to the HOME screen from any screen.

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Jog dial/ENTER button Rotate the jog dial to select the desired item and then press the ENTER button to confirm. Rotating the jog dial also adjusts the setting values.
· Locking the operation buttons (Key Lock function) Press the BACK button and ENTER button simultaneously for over 2 seconds to activate the Key lock function, and thus lock all front panel operations except for the Power switch.
· Unlocking the operation buttons When the operation buttons are locked, press the BACK button and ENTER button simultaneously for over 2 seconds to unlock the operation buttons.
Display and jog dial operations:
HOME screen

1

2

3

4

The item with is the currently selected item. By rotating the jog dial, move to select the operation you want to perform and then press the ENTER button.

1 Master level adjustment (Lvl)

Master level -50 -40 -30 -20 -12 -6 0 6 12 Peak (dBu)

  • Rotate the jog dial to adjust the CU output level (OUTPUT 1). · While pressing the ENTER button, rotate the jog dial to adjust
    the level in 10-step increments. · Be sure that the Peak indicator does not light up while
    adjusting the level.
    2 Recording operations (Rec)
    R (Remaining recording time)/E (Elapsed recording time) display -50 -40 -30 -20 -12 -6 0 6 12 Peak (dBu)

3 Conference preparation (Pst)
· [1] Recall Presets : Rotate the jog dial to move “>” to the item you want to recall and then press the ENTER button to confirm.
· [2] Conf. Setup : Change or check the conference settings. Rotate the jog dial to move “>” to the item you want to change or check and then press the ENTER button to confirm. Pst Menu Items: Settings can also be configured via Web Remote. The item names in parentheses ( ) are used for Web Remote. [1] Recall Presets [2] Conf. Setup 01 Conference Mode (Conference Mode) 02 NOM (Number of Open Mics) 03 Auto Mic Off (Auto Mic OFF) 04 Override Mode (Override Mode) 05 Max Queue (Maximum in Queue) 06 MicON Trigger (Mic ON Trigger / Mic ON Trigger for Priority) 07 MicON Hold Time (Mic ON Hold Time) 08 Interrupt Option (Interrupt Option)
· Items that can be configured from [2] Conf. Setup differ depending on the conference mode.
· For details on items, see “Menu items” in the Web Remote Manual.
4 Configuring settings (Set) Rotate the jog dial to move “>” to the desired item or value and then press the ENTER button to confirm.
For details on setting items, see “Set Menu Items” ( page 22).

  • Rotate the jog dial to select Rec (Start recording)/ Pau (Pause)/Stp (Stop)/R or E (Recording time display) and then press the ENTER button to confirm.
    · Select the time display on the top right side of the screen using the jog dial and then press the ENTER button to switch the display between R (Remaining recording time)/E (Elapsed recording time).
    · To adjust the recording level, move to the recording level meter at the top left of the screen to display Rec Lvl and then press the ENTER button to enter recording level adjustment mode. Rotate the dial to adjust the recording level being sure that the Peak indicator does not light up.
    · While pressing the ENTER button, rotate the jog dial to adjust the level in 10-step increments.

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Rear panel

  • The serial number label is located on the top panel.

NOTICE · Refer also to the instruction manuals supplied with the external devices.
· Be careful NOT to connect the Ethernet cable from your network device to the CU LINK terminal or DU CHAIN terminal. This can cause damage to the connected device.
NETWORK terminal · RJ-45 · Use for connecting to a local area network when controlling from an external device via the Web Remote Control or IP
remote function ( page 38)
CU LINK A/B terminals, DU CHAIN C/D terminals · RJ-45
· Use for cascading multiple 50CUs. ( page 36)
· You can also configure these terminals as 50DU/IU/INT
terminals. ( page 27)
DU CHAIN A/B terminals · RJ-45 · Use for connecting 50DU/IU/INT. You can daisy-chain multiple 50DU/IU/INTs as well as connect multiple 50DU/ IU/INTs in a ring using the A/B terminals.
· By cascade-connecting multiple 50CUs, up to 300 50DU/IU/INTs can be connected. However, there is a
maximum of 6 INTs. ( page 36).

Analog output (balanced) terminals: OUTPUT 1-4 (BAL) · Euroblock · Pin arrangement: “+” Hot/”­” Cold/”G” GND
Analog output (unbalanced) terminals: OUTPUT1 (UNBAL) · Euroblock · Pin arrangement: “SIG” Signal (2 systems)/”G” GND
Analog input (unbalanced) terminals: INPUT (AUX) · RCA
Analog input (balanced) terminals: INPUT (MIC/LINE 1-2) · Euroblock · Pin arrangement: “+” Hot (supports phantom power)/ “­” Cold (supports phantom power)/”G” GND · The input type can be switched between MIC and LINE
Analog input (balanced) terminal: INPUT (INTERPRETATION RETURN 1-2) · Euroblock · Pin arrangement: “+” Hot/”­” Cold/”G” GND · Inputs audio signals from simultaneous interpretation system
Ground screw Since the supplied AC power cord has a three-pronged plug, as long as your AC power wall outlet is grounded properly, the CU will also be grounded properly.
AC Inlet (AC IN) Connect the supplied AC power cord.
NOTICE · Do not plug in the AC power cord until all other connections, including 50CU extension and 50DU/IU/ INTs, have been completed.
· Be sure that the CU is securely grounded to a single ground point. Grounding to multiple ground points can cause ground loops, resulting in noise generation such as a humming noise.

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ATUC-50DU

Display When changing monitor channel or adjusting the volume level, the currently set value is displayed.
Microphone release lever Microphone jack
Connect a microphone. · A typical 3-pin XLR type microphone as well as the ATUC-M
series microphone can be connected. </> Monitor channel selection buttons
When operating the </> monitor channel selection buttons, the currently selected monitor channel is shown on the display .
FL: Monitors speech from the floor channel. 01-03: Monitors speech from groups 1 to 3. Speech interpreted by interpretation units is added to the speech from groups 1 to 3 when INTs are connected on the same system. ­/+ Headphone volume adjustment buttons When operating the ­/+ headphone adjustment buttons, the current volume level (0 to 20) is shown on the display . Built-in speaker Outputs conference audio. (talk) LED Displays DU talk status. · While talking: lit red · When requested to talk (in standby mode): blinks green · W hen talk request is rejected: blinks green (quickly blinks 4 times)
· The LED colors can be changed. See the Web Remote Edition.

(talk) button Press this button to send a request to talk. Press the button again to finish talking or cancel the request to talk. DUs designated as a priority DU can cut other DU speakers short and mute other DUs by pressing this button.

Operations when the (talk) button is pressed briefly:

Conference mode

Current state

Mic ON Trigger mode

Button

Voice

Talk OFF Talk ON

Free Talk

Requesting to talk

Cancel request

(Not acceptable)

Talk ON Talk OFF

Talk OFF Request to talk

Request Talk

Requesting to talk

Cancel request

Talk ON Talk OFF

Full Remote

– (External control only)

  • On priority DUs, operations of the priority DUs are same as in Free Talk Mode regardless of the conference mode.

Operations when the (talk) button is pressed and held: Only for Priority DUs with [Can Cut/Mute] set to on

Mic ON Trigger mode

Current state

Button

Voice

Press the button for 2 seconds or less

Button/Voice
Cut mode Mute mode
Press and hold the button for over 2 seconds

Talk OFF Talk ON

Talk ON Talk OFF

(Not acceptable)

Talk ON(1)
Talk ON stays active(
1)

Talk ON(2)
Talk ON stays active(
2)

1 All specified DUs will be in Talk OFF state. 2 All specified DUs will be in mute state.

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ATUC-50INT

VOL. A

B

Display · Character on the left: Displays the current monitor channel. F: Monitors speech from the floor channel (speech from all meeting participants). 1: Monitors speech from language group 1. · Digit on the right: Displays the language group (1 to 3) assigned to the INT output. When adjusting the volume level, the set value is displayed.
Microphone release lever
Microphone jack Connect a microphone. A typical 3-pin XLR type microphone as well as the ATUC-M series microphone can be connected.
Monitor channel selection button Switches the speech from the floor channel and the speech from language group 1 each time it is pressed.
VOL. Headphone volume adjustment button When operating this button, the current volume level (0 to 20) is shown on the display . The volume is adjusted by operating the / buttons while in this state. Operating this button while the volume level is displayed takes you back to the monitoring channel display.
A / B Interpretation languages selection buttons (only available in bi- directional interpretation) This function is only available when bi- directional interpretation has been selected. (Outgoing language A/Outgoing language B) Switches the location of the interpretation speech being output according to the interpretation pattern.
(Talk) LED Displays INT talk status.
(Talk) button Press this button to talk. Press the button again to finish talking.

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Common to ATUC-50DU/INT

ATUC-M

Microphone Ring LED
Lights red when the microphone is activated. Blinks red while waiting to talk. Connector

Headphone jack Speech from the selected monitor channel is output.
Rear LED The LED color can be set for each 50DU. This is useful when dividing 50DUs into groups by color. The LED color can be changed from Web Remote. NOTICE · Color settings cannot be done for INTs. The settings stay at their default.
Extension terminal
DU/CU connection terminals ( page 26)
Bottom cover Covering the terminals protects them from dust and also prevents cables from becoming unplugged. Therefore, after connecting cables to each terminal, be sure to attach the bottom cover.
Serial number

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25 13.5

ATUC-50IU
5
100 116 100 86

5 12

38

24 50

173

100

117

5

Because the IU is intended to be embedded in a table, etc., when it is used, the user interfaces, such as displays, operating terminals, and input/ output terminals, can be customized according to their usage environment. Specifications for the interfaces are as follows.

Microphone input terminal

Pin number

Signal name

1

GND

2

COLD

3

HOT

4

RING LED

Explanation
Microphone input GND Microphone input balance Supplies a phantom power supply of +48 V (possible to toggle on/off ) For controlling ATUC-M LED

Terminal color
Green

Speaker output terminal

Pin number

Signal name

Explanation

Terminal color

5

HOT

6

COLD

Speaker output 1.4 W, 8 (impedance over 4 )

Green

  • We recommend using a shielded wire for the speaker output terminal. The GND shield in this case is connected to the GND pin (9).

Headphone output terminal

Pin number

Signal name

7

L ch

8

R ch

9

GND

Headphone output 15 mW 32
Headphone output GND

Explanation

Terminal color
Green

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Status output terminal

Pin number

Signal name

10

TALK LED : OPEN/CLOSE

11

TALK LED : LOW/HI

12

FLOOR LED

13

LANGUAGE1 LED

14

LANGUAGE2 LED

15

LANGUAGE3 LED

Operation input terminal

Pin number

Signal name

16

CHANNEL

17

VOL. UP

18

VOL. DOWN

19

TALK ON

20

CUT/MUTE

21

TALK ON (INVERT)

Power supply output terminal

Pin number

Signal name

22

5 V

23

GND

General purpose input terminals (GPI)

Pin number

Signal name

24

GPI0

25

GPI1

26

GPI2

27

GPI3

28

GPI4

29

GPI5

30

GPI6

31

GPI7

Explanation
Talk ON: Close Talk OFF: Open Requesting to talk (waiting): blinks Talk request is rejected: blinks quickly
Terminal for AT8657/LED and U891RCx Talk ON: +5 V Talk OFF: 0 V On/off operations are synchronized with the open/close operations for the TALK LED pin (10)
Selecting the floor channel on the monitor channel When selected: Close When unselected: Open
Selecting group 1 on the monitor channel When selected: Close When unselected: Open
Selecting group 2 on the monitor channel When selected: Close When unselected: Open
Selecting group 3 on the monitor channel When selected: Close When unselected: Open

Terminal color
Black

Explanation
Selecting the monitor’s channel
Adjusting the headphones’ volume
Request to talk Yes: Close No: Open Request to mute/cut microphone Yes: Close No: Open AT8657/LED dedicated terminal Request to talk Yes: +5 V No: 0 V The function of this pin is the same as that of the TALK ON pin (19) *W hen there is a TALK ON or TALK ON (INVERT) request to talk, the system handles them both as requests to talk.

Terminal color
Black

Explanation
Power supply for LED is 5 V Power supply GND

Terminal color
Black

Explanation
General purpose input terminal 0 General purpose input terminal 1 General purpose input terminal 2 General purpose input terminal 3 General purpose input terminal 4 General purpose input terminal 5 General purpose input terminal 6 General purpose input terminal 7

Terminal color
Black

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General purpose output terminals (GPO)

Pin number

Signal name

32

GPO0

33

GPO1

34

GPO2

35

GPO3

36

GPO4

37

GPO5

38

GPO6

39

GPO7

Explanation
General purpose output terminal 0 General purpose output terminal 1 General purpose output terminal 2 General purpose output terminal 3 General purpose output terminal 4 General purpose output terminal 5 General purpose output terminal 6 General purpose output terminal 7

Terminal color
Black

  • You can assign functions to the general purpose input/output terminals (GPI and GPO) on the web remote’s settings screen.

Audio Technica LINK terminal Connect the Audio Technica products and configure the system.
NOTICE · Power is supplied to external devices from the 5 V pin (22); however this pin has a maximum rating of +5 VDC at 100 mA. When you use this, select a circuit or current limit (resistance value) so that the rating is not exceeded.
· If this is used beyond its ratings, it may cause the product to malfunction, but even more so, it may cause fires or unforeseen accidents.

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Example of a user interface connection

123 456 789

10 11 12 13 14 15 16 17 18 19 20 21

22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39

TALK LED OPEN/CLOSE

FLOOR LED

LANGUAGE 1 LANGUAGE 2 LANGUAGE 3

LED

LED

LED

CHANNEL VOL. UP VOL. DOWN TALK ON CUT/MUTE

22 10

22 12

22 13

22 14

22 15

16 23

17 23

18 23

19 23

20 23

GPI 0

GPI 7

GPO 0

GPO 7

24 23

31 23

22 32

22 39

Inputpin IN (23pin GND)

Output pin (22pin 5V) IN

Max. 7 7mmAA

When using with the ATUC-M
XLXRLR ReRceecpetpatacclele
1 FG 2 3

ATUC-50IU
1 GND 2 COLD 3 HOT 4 RING LED

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When using with the AT8657/LED

1

5

23 4

ATUC-50IU
1 GND 2 COLD 3 HOT
11 TALK LED: LOW/HI 21 TALK ON (INVERT)

When using with the U891RCx

BK: GND WH: LED CONTROL BL: CONTACT CLOSURE
RD: COLD YL: HOT SH: GND

  • Do the following settings for the U891RCx. SW.FUNCTION: MOM. ON CONTROL: LED Remote
    Mounting an IU · When securing in two directions Align the IU with the edge of a table, etc., and then fasten it with screws.

ATUC-50IU 1 GND 2 COLD 3 HOT
11 TALK LED: LOW/HI 19 TALK ON 23 GND

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  • When securing on only one side Leave about 2 mm of the screws out when you fasten them to the table, and then hang the IU on them. Slide the IU downward, and then tighten the screws to secure the IU.
    Suspend screws about 2 mm
    Tighten screws securely · You can also mount the IU inverted or sideways. W hen mounting, fasten at a minimum of two places with screws.
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ATLK-EXT165

Mode switch

Remote mode

This mode allows the CU to automatically start the unit.

Standalone mode

This mode allows you to operate the EXT by itself.

We recommend using the remote mode if you are using the EXT. Use the following procedure to turn the EXT’s mode switch on and off manually in standalone mode. If you change the order of operations, the 50DU that is connected may not be recognized correctly. · To turn on the power
Turn on 50CU power Turn on mode switch of EXT · To turn off the power
Turn off mode switch of EXT Turn off CU power

Power indicator

Audio Technica LINK Device indicator Indicates the connection status of devices that support Audio Technica LINK. · Connected: Lit · Unconnected: Unlit

Data indicator · Establishing link (data not transmitted): Lit · Transmitting data: Blinking · No link: Unlit

Cooling fan

Audio Technica LINK POWER STATUS output terminal Open: Power inactive
Close: Power active

Audio-Technica LINK A/B terminals · RJ-45
· Use to connect the devices that support Audio-Technica LINK.

AC inlet (AC IN) Connect the supplied AC power cord.

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Changing settings from ATUC-50CU

You can change 50CU settings by selecting “Set” on the HOME screen of the display. Changeable items are as follows. For more detailed settings and individual settings for each 50DU/ IU/INT, use Web Remote.

  • After changing the network setting item(s), restart the 50CU to enable the setting values.

Set Menu Items

[1] System Setting 01 Device Name 02 Link Port Set
03 CU Link Mode
04 CU Error Notice 05 IP Setting
01 IP Config Mode 02 IP Address 03 Subnet Mask 04 Gateway Address 06 Allow Discovery 07 IP Ctrl Setting 01 IP Ctrl Port No 02 IP Ctrl Ntfy 03 Audio Level Ntfy 04 M-cast Adrs 05 M-cast Port No 08 Auto Mode Change 01 Auto Mode Change 02 Hold Time(Err) 09 NTP Setting 01 NTP 02 NTP Adrs 03 NTP Port 04 Time Zone 05 DST 06 DST Start Date 07 DST Start Time 08 DST End Date 09 DST End Time 10 Login Password 01 Admin.Pwd.Login 02 Admin.Password 03 Opr.Pwd.Login 04 Opr.Password 11 Reset All Dflt.
[2] System Info 01 Name 02 Serial Number 03 FW Version 04 IP Config Mode 05 IP Address 06 Subnet Mask 07 Gateway Address 08 Mac Address 09 Allow Discovery 10 IP Ctrl Port No 11 IP Ctrl Ntfy 12 Audio Level Ntfy 13 M-cast Adrs 14 M-cast Port No 15 NTP 16 NTP Adrs 17 NTP Port 18 Time Zone 19 CU Link Status

ATUC-50CU CU A/B, DU C/D Primary, Extension Pass Thru, Extension Last Unit On, Off
Auto, Static 0.0.0.0 – 255.255.255.255 0.0.0.0 – 255.255.255.255 0.0.0.0 – 255.255.255.255 On, Off
00001 – 65535 On, Off On, Off 0.0.0.0 – 255.255.255.255 00001 – 65535
On, Off 20, 30, 40 seconds
On, Off 0.0.0.0 – 255.255.255.255 00001 – 65535 UTC ­12:00 to +14:00 On, Off 1/1 – 12/31 0:00 – 23:00 1/1 – 12/31 0:00 – 23:00
On, Off Displays password On, Off Displays password
Displays current settings

20 CU Link Mode 21 No.ofExtensionCU 22 Total No.of DU 23 Total No.of IU 24 Total No.of INT [3] Audio Setting 01 MIC/LINE Input 1
01 Input Type 02 Input Gain 03 Level 04 Phantom Power 05 Mix to Floor 02 MIC/LINE Input 2 01 Input Type 02 Input Gain 03 Level 04 Phantom Power 05 Mix to Floor 03 AUX Input 01 Level 02 Mix to Floor 04 DU SP Output Lvl 05 DU Floor Lock 06 VoiceDetectSens 07 Auto to Mic2 In [4] Recorder Setting 01 Rec Format 02 RecordingQuality 03 No.of Rec CH
04 Rec Source CH1
05 Rec Source CH2
06 Rec Source CH3
07 Rec Source CH4
08 Auto Track 09 Filename Prefix [5] Conference 01 Conference Mode 02 NOM 03 Auto Mic Off
04 Override Mode
05 Max Queue 06 MicON Trigger 07 MicON Hold Time 08 Interrupt Option [6] Logging 01 Logging

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Mic, Line +4dBu, Line 0dBV ­60dB to ­16dB ­, ­120 to +10dB On, Off On, Off
Mic, Line +4dBu, Line 0dBV ­60dB to ­16dB ­, ­120 to +10dB On, Off On, Off
­, ­120 to +10dB On, Off 0 – 20 On, Off ­5, ­4, ­3, ­2, ­1, 0, 1, 2, 3, 4, 5 On, Off
WAV, MP3 64, 128, 192, 256, 320kbps 1 to 4 (WAV), 1 to 2 (MP3) Floor, Group 0, Group 1, Group 2, Group 3, Language 1, Language 2, Language 3, Remote Lang. 1, Remote Lang. 2, Mic/Line 1, Mic/Line 2, Mic/ Line 1&2 Mix Floor, Group 0, Group 1, Group 2, Group 3, Language 1, Language 2, Language 3, Remote Lang. 1, Remote Lang. 2, Mic/Line 1, Mic/Line 2, Mic/ Line 1&2 Mix Floor, Group 0, Group 1, Group 2, Group 3, Language 1, Language 2, Language 3, Remote Lang. 1, Remote Lang. 2, Mic/Line 1, Mic/Line 2, Mic/ Line 1&2 Mix Floor, Group 0, Group 1, Group 2, Group 3, Language 1, Language 2, Language 3, Remote Lang. 1, Remote Lang. 2, Mic/Line 1, Mic/Line 2, Mic/ Line 1&2 Mix Off, 15, 30 min, 1, 2 hour Displays filename prefix
Free Talk, Request Talk, Full Remote 1 to 10 5 to 60sec ,Off No Override, FIFO, LIFO (depending on Conference Mode) 0-150 All Button, All Voice, Individual 1.0 to 10.0 seconds Cut, Mute
On, Off

02 Destination
[7] Presets 01 Recall Presets 02 Save Presets 03 Import Presets 04 Export Presets 05 Boot Up Preset

Internal, USB
Recalls presets Saves presets Imports presets Exports presets Calls presets at boot up

Entering letters
For example, when entering letters from [4] Recorder Setting 09 Filename Prefix , follow the procedure below.
1 Rotate the jog dial to select a letter.
You can use the following characters. (1) Password A to Z, a to z, 1 to 9, 0 (2) Device Name A to Z, a to z, 1 to 9, 0, ! # $ ( ) * + , – . : ; < = > ? @ , (space) (3) Filename Prefix A to Z, a to z, 1 to 9, 0, ! # $ ( ) + , – . ; = ? @, (space)
2 Press the ENTER button to enter the selected
letter.
The cursor moves to the right.
3 Repeat steps 1 and 2 to enter desired text.
To delete characters you have just entered, follow the procedure below. · To move the cursor to the character you want to edit:
(1) While pressing and holding the BACK button, rotate the jog dial to move the cursor.
(2) Release the BACK button. · To delete characters you have just entered:
(1) Move the cursor to the character you want to delete. (2) While pressing and holding the BACK button, press the
ENTER button. The character at the current cursor position will be deleted.
· When the cursor flashes in “” state at the end of the text, the character just before the cursor will be deleted.
· To change characters you have just entered: (1) Move the cursor to the character you want to edit. (2) Rotate the jog dial to select the desired character.
· To finish editing: (1) When the cursor is in “” blinking state, press the ENTER button. When editing ends, the cursor will move to the end of the text and “
” will blink.
4 To enter the text, when the cursor is in the “_”
blinking state, press the ENTER button.
Displays Completed! followed by the file name.

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Overview of the Interpretation Unit (ATUC-50INT)

  • Up to 6 interpretation units can be connected. · The maximum number of 50DU/IU/INT connections is 300
    (when three CUs are linked). · INTs can only be connected to the primary 50CU. They cannot be
    connected to extension 50CUs.

Digital Conference System ATUC-50 with the additional Interpretation Unit ATUC-50INT enables the following three types, (1) to (3), of interpretation. This section explains a brief overview of operations assuming that you have set the interpretation languages as in the following table.

Audio Group 1

English

Language Name

Audio Group 2

Japanese

Audio Group 3

French

(1) Interpretation using two languages (2 Languages)
· While in the 2 Languages interpretation mode, you can select from three interpretation patterns (see table below).
· For instance, when the interpretation pattern “English Japanese” is set, “F” appears as the character on the left in the display , and “2” appears as the digit on the right. At this time, the speech from the floor channel is heard through the monitor channel. Additionally, interpreted speech that is input from the microphone of the INT is output to Audio Group 2 (the Japanese group).
· When the bi-directional interpretation pattern is selected, the interpretation system is established with just this INT1. Pressing the interpretation languages selection button switches the interpretation patterns between “Japanese English (Outgoing language A)” and “English Japanese (Outgoing language B)”, simultaneously switch the interpreted speech being output. Whichever interpretation pattern you selected, “Japanese English (Outgoing language A)” or “English Japanese (Outgoing language B)”, it is not saved. W hen the system is started, the interpretation pattern is “Japanese English (Outgoing language A)”.

“Hello”
Monitored

speech

B

Interp”reted speech”

Audio Group 1 English

Audio Group 2 Japanese

“TInhtaernpkreyteodus”peech

A

Monitore”dspeech ”

Interpretation Interpattern preter

Monitored speech

Character on the left

Output destination group

Digit on the right

English Japanese

A + B

Outgoing language A

English

1

Outgoing language B

Japanese

2

Floor*

F*

English Japanese

B

Japanese

2

Japanese English

A

English

1

  • Interpreters can do a switch operation to monitor the audio of language group 1 (key language)

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(2) Interpretation using three languages (3 Languages)
· While in the 3 Languages interpretation mode, you can select from nine interpretation patterns (see table below).
· Although there are three ways to do combinations within 2 Languages, the basic operations are the same as those for 2 Languages interpretation.

Audio Group 1 English

“Hello” Monitored
speech
Interpreted speech
“Thank you”

B ” ”
Interpreted speech

A

Monitored

speech

” ”

Audio Group 2 Japanese

Instpeer”eprcehted” ” sMpoenietcohr”ed

M”Hosnepiletlooerc”ehd Intesrpperee”cYtheeds”

D C

E F

  • Out of the three languages, the language of Audio Group 1 is used as the key language (in this case it is English), and relay interpretation is possible. (diagram below)
    · When interpreting from French to Japanese, for example, Interpreter C first interprets “French English”. Interpreter B switches the monitor channel to the key language “1”, listens to the English interpretation from interpreter C, and then interprets “English Japanese”.
    · Other than that, the basic operations are the same as those for 2 languages.

Audio Group 1
English (Key language)

Monitored speech “Hello”
“Thank you”
Interpreted speech

” ”

Interpreted

B

speech

Interpreted speech
” ”

Audio Group 2 Japanese

A

” ” Monitored

speech

sMpoenie”tcohOrueid” “MIensrtpceier”eprcehted

“HMeoslnlpoite”oercehd Intesrppereecteh”dYes”

“IBntoesnrpjpoereuecrth”ed Mosnpiet”oeOrcehudi”

Audio Group 3 French

Interpretation
pattern

Interpreter

Moni- Character tored on the speech left

Output destination group

Digit on the right

2

  • Interpreters can do a switch operation to monitor the audio of language group 1 (key language)

“MInetersrcppi”er”eBetcoIenhdntjeosrpuperr”eetcehd Mosnpiteo”eOrcehudi”

D C

Interpretation between these
languages is unnecessary.
Audio Group 3 French

Interpreta- Intertion pattern preter

Monitored speech

Character on the left

Output destination group

Digit on the right

English Japanese

A + B

Floor/ English

F/1

(switched by interpreter)

Outgoing language A

English

1

Outgoing language B

Japanese

2

English French

C + D

Floor/ English

F/1

(switched by interpreter)

Wired System Connections and Configuration

Connecting devices

NOTICE · Do not plug in the supplied AC power cord until all other connections have been completed.
· Insert the plugs all the way in. Loose connections may cause malfunctions or noise.
· Check the plug orientations. · Refer also to the instruction manuals supplied with the
external devices. · Although connecting the 50CUs, 50DUs, and INTs are
described here, because basic IU connections are the same as those for 50DUs, refer to how to connect the DUs when connecting IUs. However, refer to the table “Relationship of the LAN cable length, number of units
connected and number of EXTs required” ( page 29,
33) regarding the number of IUs to connect.
Entire system connection diagram (1) Refer also to the entire system connection diagram (2) ( page
38)

When securing a 50DU/INT to a desk or table, use the screw holes (3 holes) on the bottom side of the 50DU/INT (screw: M3, P=0.5, within 6 mm from the bottom side to the tip of the screw).
95 30
45

87 (103.5)

3 2
1

1 Connecting 50DU/INT to 50CU

1 Place the 50CUs and 50DU/INTs.

NOTICE · Install the units on a flat surface. Dropping a unit may

1

cause damage to the unit and/or personal injury.

  • When installing the 50CU in a rack, read the precautions

in advance ( page 5).

1
2 Connect the 50DU/INTs to the DU CHAIN A/B
terminals.

5

4

Speaker

Amplifier
NOTICE · Use straight cables. (Shielded cables with conductor size of 24AWG or higher in diameter are recommended.)
· Using flat-type cables or unshielded cables may cause noise and affect other devices.
· Be sure to establish a ground connection.

Ethernet cable

26
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  • Remove the 50DU/INT bottom cover to connect the Ethernet cables. To remove the bottom cover, pinch together the latches on both sides.
    · On the 50DU/INT, the 50DU/50CU connection terminals are not differentiated, so you can connect to either the left or right terminal.
    2 Connecting the 50DU/INTs together
    To ATUC-50CU

Ring connection: Connect the 50DU/INTs to each of the DU CHAIN A/B terminals and then connect together the last 50DU/INTs together to form a ring. Even if a connection failure occurs somewhere in the ring, since the connection is recognized as 2 daisy chains using the DU CHAIN A/B terminals, the influence of the failure can be minimized and you can continue operating.
One more ring connection can be made by configuring these terminals as the DU CHAIN C/D terminals.

Ethernet cable

Ethernet cable

1 Connect the 50DU/INTs according to the
installation environment and operation method.
Daisy-chain connection: Connect the 50DU/INTs in a series to the DU CHAIN A/B (C/ D) terminals. Compared to a ring connection, a daisy-chain connection enables the 50DU/INTs to be placed even farther from the 50CU.

Even if a connection failure occurs, since the connection is recognized as 2 daisy chains using the DU CHAIN A/B terminals, you can carry on conference control.
· Combining different connection types is also possible, such as a ring connection using the DU CHAIN A/B terminals and daisy-chain connections using the DU CHAIN C/D terminals.

If a connection failure occurs here, all the connections to the last DU/INT are disabled.

Final 50DU/INT

Final 50DU/INT

Daisy-chain connection

Ring connection

2 Expand the system with EXT.
By adding EXT to the system, you can increase the number of 50DU/INT connections and extend the distance of the total extension length of the connecting cable (LAN cable).
For instance, you can connect a total of 100 50DUs/INTs, 50 units on either terminal, by connecting an EXT near the B terminal when using a daisy-chain connection on both the DU CHAIN A and B terminals.

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Maximum number of connections for each terminal/each 50CU in Standalone mode

Maximum number of terminal connections in a DU CHAIN

Daisy Chain

A

B

C

D

Total

50

50

50

50

100*

Ring

50

50

100

  • The maximum number of units that can be connected is up to 100 units to each terminal on the DU CHAIN by using the EXT.
  • IUs consume more power than 50DUs, so the number of units shown in the table cannot be connected. If you connect that many, it may damage the 50CUs or the EXTs.
    Refer to the table “Relationship of the LAN cable length, number of units connected and number of EXTs required” ( page 29, 33) regarding
    the number of IUs that can be connected.

Maximum number of connections for each terminal/each CU when using 3 CU LINKs

ATUC-50CU Primary

ATUC-50CU Extension *max 2pcs

Maximum number of terminal connections
in a DU CHAIN

Maximum number of terminal connections in a DU CHAIN

System Total

50CU x 2

A

B

NOTICE · Up to 6 INTs can be connected to the primary 50CU.

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Daisy-chain connection

ATUC-50CU

L1

L2

L2

ATUC-50DU

L2

L1

L3

L2

L2

ATLK-EXT165

NOTICE · For a 50CU-50DU-50DU-…50DU-EXT connection, the distance between the [50DU-EXT] is L1. · W hen it is EXT-50DU-…-50DU-50DU-, the distance for [EXT- 50DU] is L3.

Relationship of the LAN cable length, number of units connected and number of EXTs required: Daisy-chain connection

Length of cables

1-port daisy-chain connection (using DUs)

1-port daisy-chain connection (using IUs)

50CU50DU
L1
10 m

50DU50DU
L2
1.5 m

EXT-50DU L3 10 m

Number of 50DUs connected
1 to 45 units 46 to 50 units

Number of EXTs needed
0 units 1 unit

Number of IUs connected
1 to 30 units 31 to 45 units

Number of EXTs needed
0 units 1 unit

50 m

1.5 m

10 m

1 to 36 units 37 to 50 units

0 units 1 unit

1 to 24 units 25 to 39 units

0 units 1 unit

100 m

1.5 m

10 m

1 to 24 units 25 to 50 units

0 units 1 unit

1 to 16 units 17 to 33 units

0 units 1 unit

10 m

2.0 m

10 m

1 to 29 units 44 to 50 units

0 units 1 unit

1 to 27 units 28 to 43 units

0 units 1 unit

50 m

2.0 m

10 m

1 to 34 units 35 to 50 units

0 units 1 unit

1 to 23 units 24 to 37 units

0 units 1 unit

100 m

2.0 m

10 m

1 to 24 units 25 to 50 units

0 units 1 unit

1 to 16 units 17 to 33 units

0 units 1 unit

10 m

5.0 m

10 m

1 to 33 units 34 to 50 units

0 units 1 unit

1 to 25 units 26 to 39 units

0 units 1 unit

50 m

5.0 m

10 m

1 to 27 units 28 to 50 units

0 units 1 unit

1 to 20 units 21 to 34 units

0 units 1 unit

100 m

5.0 m

10 m

1 to 20 units 21 to 48 units

0 units 1 unit

1 to 14 units 15 to 30 units

0 units 1 unit

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Length of cables

50CU50DU
L1

50DU50DU
L2

EXT-50DU L3

2-port daisy-chain connection (using 50DUs)

2-port daisy-chain connection (using IUs)

Number of 50DUs
connected

Maximum number of
units connected

Number of EXTs needed

Number of IUs connected

Maximum number of
units connected

Number of EXTs needed

1 to 25 × 2 units

(total 50 units)

0 units 1 to 16 × 2 units

(total 32 units)

0 units

26 to 50 × 2 units

(total 100 units)

2 units 17 to 39 × 2 units

(total 78 units)

2 units

1 to 23 × 2 units

(total 46 units)

0 units 1 to 15 × 2 units

(total 30 units)

0 units

24 to 50 × 2 units

(total 100 units)

2 units 16 to 37 × 2 units

(total 74 units)

2 units

1 to 20 × 2 units

(total 40 units)

0 units 1 to 13 × 2 units

(total 26 units)

0 units

21 to 50 × 2 units

(total 100 units)

2 units 14 to 35 × 2 units

(total 70 units)

2 units

1 to 25 × 2 units

(total 50 units)

0 units 1 to 16 × 2 units

(total 32 units)

0 units

26 to 50 × 2 units

(total 100 units)

2 units 17 to 37 × 2 units

(total 74 units)

2 units

1 to 23 × 2 units

(total 46 units)

0 units 1 to 15 × 2 units

(total 30 units)

0 units

24 to 50 × 2 units

(total 100 units)

2 units 16 to 36 × 2 units

(total 72 units)

2 units

1 to 20 × 2 units

(total 40 units)

0 units 1 to 12 × 2 units

(total 24 units)

0 units

21 to 50 × 2 units

(total 100 units)

2 units 13 to 34 × 2 units

(total 68 units)

2 units

1 to 24 × 2 units

(total 48 units)

0 units 1 to 16 × 2 units

(total 32 units)

0 units

25 to 50 × 2 units

(total 100 units)

2 units 17 to 35 × 2 units

(total 70 units)

2 units

1 to 22 × 2 units

(total 44 units)

0 units 1 to 14 × 2 units

(total 28 units)

0 units

23 to 50 × 2 units

(total 100 units)

2 units 15 to 33 × 2 units

(total 66 units)

2 units

1 to 19 × 2 units

(total 38 units)

0 units 1 to 12 × 2 units

(total 24 units)

0 units

20 to 48 × 2 units

(total 96 units)

2 units 13 to 31 × 2 units

(total 62 units)

2 units

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Length of cables

50CU50DU

50DU50DU

EXT50DU

4-port daisy-chain connection (using 50DUs) 4-port daisy-chain connection (using IUs)

Number of 50DUs connected

Maximum number of
units connected

Number of EXTs needed

Number of IUs connected

Maximum number of
units connected

Number of EXTs needed

A/B: 1 to 15 × 2 units C/D: 1 to 10 × 2 units

(total 50 units)

A/B: 0 units C/D: 0 units

A/B: 1 to 10 × 2 units C/D: 1 to 6 × 2 units

(total 32 units)

A/B: 0 units C/D: 0 units

A/B: 16 to 30 × 2 units C/D: 11 to 20 × 2 units

(total 100 units)

A/B: 2 units C/D: 2 units

A/B: 11 to 30 × 2 units C/D: 7 to 20 × 2 units

(total 100 units)

A/B: 2 units C/D: 2 units

A/B: 1 to 15 × 2 units C/D: 1 to 10 × 2 units

(total 50 units)

A/B: 0 units C/D: 0 units

A/B: 1 to 9 × 2 units C/D: 1 to 6 × 2 units

(total 30 units)

A/B: 0 units C/D: 0 units

A/B: 16 to 30 × 2 units C/D: 11 to 20 × 2 units

(total 100 units)

A/B: 2 units C/D: 2 units

A/B: 10 to 30 × 2 units C/D: 7 to 20 × 2 units

(total 100 units)

A/B: 2 units C/D: 2 units

A/B: 1 to 14 × 2 units C/D: 1 to 10 × 2 units

(total 48 units)

A/B: 0 units C/D: 0 units

A/B: 1 to 8 × 2 units C/D: 1 to 6 × 2 units

(total 28 units)

A/B: 0 units C/D: 0 units

A/B: 15 to 30 × 2 units C/D: 11 to 20 × 2 units

(total 100 units)

A/B: 2 units C/D: 2 units

A/B: 9 to 30 × 2 units C/D: 7 to 20 × 2 units

(total 100 units)

A/B: 2 units C/D: 2 units

A/B: 1 to 15 × 2 units C/D: 1 to 10 × 2 units

(total 50 units)

A/B: 0 units C/D: 0 units

A/B: 1 to 10 × 2 units C/D: 1 to 6 × 2 units

(total 32 units)

A/B: 0 units C/D: 0 units

A/B: 16 to 30 × 2 units C/D: 11 to 20 × 2 units

(total 100 units)

A/B: 2 units C/D: 2 units

A/B: 11 to 30 × 2 units C/D: 7 to 20 × 2 units

(total 100 units)

A/B: 2 units C/D: 2 units

A/B: 1 to 15 × 2 units C/D: 1 to 10 × 2 units

(total 50 units)

A/B: 0 units C/D: 0 units

A/B: 1 to 9 × 2 units C/D: 1 to 6 × 2 units

(total 30 units)

A/B: 0 units C/D: 0 units

A/B: 16 to 30 × 2 units C/D: 11 to 20 × 2 units

(total 100 units)

A/B: 2 units C/D: 2 units

A/B: 10 to 30 × 2 units C/D: 7 to 20 × 2 units

(total 100 units)

A/B: 2 units C/D: 2 units

A/B: 1 to 14 × 2 units C/D: 1 to 10 × 2 units

(total 48 units)

A/B: 0 units C/D: 0 units

A/B: 1 to 8 × 2 units C/D: 1 to 6 × 2 units

(total 28 units)

A/B: 0 units C/D: 0 units

A/B: 15 to 30 × 2 units C/D: 11 to 20 × 2 units

(total 100 units)

A/B: 2 units C/D: 2 units

A/B: 9 to 30 × 2 units C/D: 7 to 20 × 2 units

(total 100 units)

A/B: 2 units C/D: 2 units

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Length of cables

50CU50DU

50DU50DU

EXT50DU

4-port daisy-chain connection (using 50DUs) 4-port daisy-chain connection (using IUs)

Number of 50DUs connected

Maximum number of
units connected

Number of EXTs needed

Number of IUs connected

Maximum number of
units connected

Number of EXTs needed

A/B: 1 to 15 × 2 units C/D: 1 to 10 × 2 units

(total 50 units)

A/B: 0 units C/D: 0 units

A/B: 1 to 10 × 2 units C/D: 1 to 6 × 2 units

(total 32 units)

A/B: 0 units C/D: 0 units

A/B: 16 to 30 × 2 units C/D: 11 to 20 × 2 units

(total 100 units)

A/B: 2 units C/D: 2 units

A/B: 11 to 29 × 2 units C/D: 7 to 20 × 2 units

(total 98 units)

A/B: 2 units C/D: 2 units

A/B: 1 to 15 × 2 units C/D: 1 to 10 × 2 units

(total 50 units)

A/B: 0 units C/D: 0 units

A/B: 1 to 9 × 2 units C/D: 1 to 6 × 2 units

(total 30 units)

A/B: 0 units C/D: 0 units

A/B: 16 to 30 × 2 units C/D: 11 to 20 × 2 units

(total 100 units)

A/B: 2 units C/D: 2 units

A/B: 10 to 29 × 2 units C/D: 7 to 20 × 2 units

(total 98 units)

A/B: 2 units C/D: 2 units

A/B: 1 to 14 × 2 units C/D: 1 to 10 × 2 units

(total 48 units)

A/B: 0 units C/D: 0 units

A/B: 1 to 8 × 2 units C/D: 1 to 6 × 2 units

(total 28 units)

A/B: 0 units C/D: 0 units

A/B: 15 to 30 × 2 units C/D: 11 to 20 × 2 units

(total 100 units)

A/B: 2 units C/D: 2 units

A/B: 9 to 28 × 2 units C/D: 7 to 20 × 2 units

(total 96 units)

A/B: 2 units C/D: 2 units

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Ring connection

ATUC-50CU

L1

L1

L2

L2

ATUC-50DU

L1

L2

L2

L1

ATLK-EXT165

L3

L2

L2

L3

NOTICE · For a 50CU-50DU-50DU-…50DU-EXT connection, the distance between the [50DU-EXT] is L1. · W hen it is EXT-50DU-…-50DU-50DU-, the distance for [EXT- 50DU] is L3.

Relationship of the LAN cable length, number of units connected and number of EXTs required: Ring connection

Length of cables

1-ring connection (using 50DUs)

1-ring connection (using IUs)

50CU50DU
L1
10 m

50DU50DU
L2
1.5 m

EXT-50DU L3 10 m

Number of 50DUs connected
1 to 45 units 46 to 50 units

Number of EXTs needed
0 units 1 unit

Number of IUs connected
1 to 30 units 31 to 50 units

Number of EXTs needed
0 units 2 units

50 m

1.5 m

10 m

1 to 36 units 37 to 50 units

0 units 2 units

1 to 24 units 25 to 50 units

0 units 2 units

100 m

1.5 m

10 m

1 to 24 units 25 to 50 units

0 units 2 units

1 to 16 units 17 to 48 units

0 units 2 units

10 m

2.0 m

10 m

1 to 43 units 44 to 50 units

0 units 1 unit

1 to 29 units 30 to 50 units

0 units 2 units

50 m

2.0 m

10 m

1 to 34 units 35 to 50 units

0 units 2 units

1 to 23 units 24 to 50 units

0 units 2 units

100 m

2.0 m

10 m

1 to 24 units 25 to 50 units

0 units 2 units

1 to 16 units 17 to 48 units

0 units 2 units

10 m

5.0 m

10 m

1 to 33 units 34 to 50 units

0 units 2 units

1 to 25 units 26 to 50 units

0 units 2 units

50 m

5.0 m

10 m

1 to 27 units 28 to 50 units

0 units 2 units

1 to 20 units 21 to 50 units

0 units 2 units

100 m

5.0 m

10 m

1 to 20 units 21 to 50 units

0 units 2 units

1 to 14 units 15 to 45 units

0 units 2 units

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Length of cables

50CU50DU

50DU50DU

EXT50DU

2-ring connection (using DUs)

Number of 50DUs connected

Maximum number of
units connected

Number of EXTs needed

1 to 25 × 2 units

(total 50 units)

0 units

26 to 50 × 2 units

(total 100 units)

4 units

1 to 23 × 2 units

(total 46 units)

0 units

24 to 50 × 2 units

(total 100 units)

4 units

1 to 20 × 2 units

(total 40 units)

0 units

21 to 50 × 2 units

(total 100 units)

4 units

1 to 25 × 2 units

(total 50 units)

0 units

26 to 50 × 2 units

(total 100 units)

4 units

1 to 23 × 2 units

(total 46 units)

0 units

24 to 50 × 2 units

(total 100 units)

4 units

1 to 20 × 2 units

(total 40 units)

0 units

21 to 50 × 2 units

(total 100 units)

4 units

1 to 24 × 2 units

(total 48 units)

0 units

25 to 50 × 2 units

(total 100 units)

4 units

1 to 22 × 2 units

(total 44 units)

0 units

23 to 50 × 2 units

(total 100 units)

4 units

1 to 19 × 2 units

(total 38 units)

0 units

20 to 50 × 2 units

(total 100 units)

4 units

2-ring connection (using IUs)

Number of IUs connected

Maximum number of
units connected

Number of EXTs needed

1 to 16 × 2 units

(total 32 units)

0 units

17 to 40 × 2 units

(total 80 units)

4 units

1 to 15 × 2 units

(total 30 units)

0 units

16 to 38 × 2 units

(total 76 units)

4 units

1 to 13 × 2 units

(total 26 units)

0 units

14 to 38 × 2 units

(total 76 units)

4 units

1 to 16 × 2 units

(total 32 units)

0 units

17 to 40 × 2 units

(total 80 units)

4 units

1 to 15 × 2 units

(total 30 units)

0 units

16 to 38 × 2 units

(total 76 units)

4 units

1 to 12 × 2 units

(total 24 units)

0 units

13 to 38 × 2 units

(total 76 units)

4 units

1 to 16 × 2 units

(total 32 units)

0 units

17 to 39 × 2 units

(total 78 units)

4 units

1 to 14 × 2 units

(total 28 units)

0 units

15 to 37 × 2 units

(total 74 units)

4 units

1 to 12 × 2 units.

(total 24 units)

0 units

13 to 35 × 2 units

(total 70 units)

4 units

The values in the tables above are calculated based on the following assumptions. · The number of 50DUs that can be connected is based on the assumption that the ATUC-M is used. · The number of IUs that can be connected is based on the assumption that ATUC-M, TALK LED, FLOOR LED, 8- speaker units, 32-
impedance headphones, and GPO terminals with LED x 4 (7 mA each) are being used. · Given that Cat5e or higher cables are used. (Shielded cables with conductor size of 24AWG or higher in diameter are recommended.) · 1-port daisy-chain connection/1 ring connection: Given that one of the DU CHAIN A/B terminals is connected in a 50DU/IU daisy chain
or that the A-B terminal is connected in a ring. · 2-port daisy-chain connection: Given that the same number of 50DUs/IUs are daisy-chained to the DU CHAIN A/B terminals. · 4-port daisy-chain connection: Given that the same number of 50DUs/IUs are daisy-chained to both the DU CHAIN A/B terminals and
the same number of DUs/IUs are daisy-chained to the DU CHAIN C/D terminals. · 2-ring connections: Given that one ring connection is used for the DU CHAIN A-B terminals and for the DU CHAIN C-D terminals.

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NOTICE · When connecting 50DUs/IUs, never exceed the number of connectable 50DUs/IUs and the connectable length. It may damage the 50CU or the EXTs.
· Depending on the CU settings, you can also connect the DUs/IUs to the CU LINK terminals by configuring them as DU CHAIN C/D terminals. However, if the number of the DUs connected to the DU CHAIN A/B terminals has not reached the maximum, be sure to connect them to the DU CHAIN A/B terminals.
· The above table and notes are the same for the INT and 50DU. However, a maximum number of 6 INTs can be connected to one system.
· The combinations shown above are representative examples. For other combinations, please inquire with our sales representative.
· The position in which to connect the EXTs should have the same number of 50DUs (A, B, and C in the following diagram) between EXT-EXT as there are between 50CU-EXT connected to the 50CU 1 port. For example, do the connections as follows for an L1 = 10 m, L2 = 1.5 m, and L3 = 10 m, with 50 units connected to a 1 port daisy-chain connection.

A=17

ATUC-50CU L1

L2

L2

L1

ATUC-50DU

ATLK-EXT165

B=17

L3 L2

L2

L3

C=16

L3

L2

L2

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CU Link connection: Up to 3 50CUs can be cascaded (cascade 50CUs using the CU LINK A/B terminals as shown below). Set one of the 50CUs as the primary unit. Since up to 100 50DU/INTs can be connected to each 50CU, if you use 3 CUs, up to 300 50DU/INTs can be connected in total.
Follow the procedure below to cascade CUs. Connect the CU LINK A terminal on the 1st extension 50CU to the CU LINK B terminal on the primary 50CU. When cascading 2 extension 50CUs, connect the CU LINK A terminal on the 2nd extension 50CU to the CU LINK B terminal on the 1st extension 50CU. Primary 50CU
Terminal A is not used.

  • You can either daisy-chain ( page 27) or ring ( page
  1. 50DU/INTs to each 50CU.
    NOTICE · When using only one 50CU without a CU Link connection, be sure to set [CU Link Settings] to [Primary]. If [CU Link Setting] is set to [Extension Pass Through] or [Extension Last Unit], we cannot assure operations.
    · Up to 6 INTs can be connected to the primary 50CU. They cannot be connected to extension 50CUs.
    3 Attach the bottom cover to the 50DU/INT.
    After connecting the Ethernet cables to the 50DUs/INTs, attach the bottom cover to each 50DU/INT. · The Ethernet cable is fixed securely between the 50DU/INT
    and the bottom cover. This helps reduce the weight of the 50DU/INT which bears on the Ethernet cables. · To lead the cable out to the rear side, use the through hole . To lead the cable out to the bottom side, use the through holes .

1st extension 50CU

up to 100 units

Bottom cover

2nd extension 50CU

up to 100 units (INTs cannot be connected)

4 Attach the optional bottom weight to the 50DU/
INTs.
· W hen using 50DU/INTs that are not secured to desktops or tabletops, it is recommended to use the optional bottom weight (330g) for secure placement.
· To purchase the optional accessories, contact our sales team.

up to 100 units (INTs cannot be connected)

Primary/Extension (CU Link Mode ):

Primary 1st extension 50CU 2nd extension 50CU
50CU

2-CU LINK [Primary] [Extension Last Unit]

3-CU LINK [Primary] [Extension Pass Through] [Extension Last Unit]

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3 Connecting the microphone ATUCM to the 50DU/INT
1 Connect the ATUCM to the microphone jack on
the 50DU/INT.
ATUC-M
ATUC-50DU/INT NOTICE · Insert the ATUC-M connector in until you hear a
clicking sound. · Do not attempt to lift up the 50DU/INT by grabbing
onto the ATUC-M. Be sure to hold the main body of the 50DU/INT when lifting it up. · Slowly bend or extend the flexible part of the ATUC-M. Do not apply excessive force to the ATUC-M when bending it. · W hen disconnecting the ATUC-M from the 50DU/INT, securely hold the connector while pressing down the microphone release lever and then remove the ATUC-M. · Before connecting/disconnecting the ATUC-M, be sure to turn off the power. If you do not turn off the power, malfunction may occur.

NOTICE · When connecting external devices to IN/OUT terminals, do so after cutting the phantom power supply of the external devices. If you leave the phantom power supply on, it may cause unexpected malfunctions.
· When connecting external devices, refer also to the instruction manuals supplied with them.
5 Turning on the 50CU and testing 50DU operations
After checking that all the connections from steps 1 to 4 have been done properly, follow the procedure below to turn on the power of the 50CU.
1 Check that all the PA devices such as an amplifier
and mixer are off.
2 Connect the supplied AC power cord to the 50CU.
NOTICE · Be sure to use the supplied AC power cord. Using an AC power cord other than the supplied one may cause problems such as damage to the 50CU, which can be very dangerous.
· Be sure to connect the AC power cord into a properly grounded wall outlet. Improper grounding can cause electrical shock.
· Be sure that the 50CU is securely grounded to a single ground point. Grounding to multiple ground points can cause ground loops, resulting in noise generation such as a humming noise

Connecting an amplifier

1 Connect an amplifier to the OUTPUT BAL.
terminal.
Connect an amplifier to amplify sound. Connect a speaker via the amplifier.

3 Press the power button.

OUTPUT BAL. terminal Amplifier

Speaker

NOTICE · When one or two extension 50CUs are connected to the system, turn on the power of the primary 50CU and extension 50CU(s) at the same time. If the time period between each power-on time is significantly long, a successful CU Link may not be established.
· Configure the network setting from the 50CU ( page
22) as necessary.

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4 After the 50CU starts up, press the (talk) button
of each 50DU to confirm operation.
NOTICE · When the 50DUs are placed close to each other, excessively raising the volume of the 50DU speakers may cause howling. In such a case, move the 50DUs farther away from each other or decrease the volume.
5 After checking that the 50DUs are operating, turn
off the 50CU before proceeding to the next step for connecting the 50CU to a network device.
NOTICE · If the power of the amplifier is on, first turn off the power of the amplifier.
Entire system connection diagram (2)
Web Remote Control
7
Tablet

Web Remote Control
7
Computer

AP Router

Switching hub
6

5

6 Connecting to a network
Configure the detailed conference system settings via Web Remote by connecting the 50CU to a network.
1 Use an Ethernet cable to connect the 50CU to a
switching hub via the NETWORK terminal.
NOTICE · Be careful NOT to connect the Ethernet cable from your network device to the CU LINK terminal or DU CHAIN terminal. This can cause damage to the connected device.

NETWORK terminal
Ethernet cable

Switching hub
7 Connecting a computer or mobile device to a network
About network settings · If there is a DHCP server running on the network, the 50CU
automatically configures network settings including the IP address. · If there is no DHCP server running on the network, manually configure network settings including the IP address from the Set
Menu System Setting ( page 10).
· W hen configuring settings manually, inquire with the network manager regarding setting items.
NOTICE · We decline any and all responsibility for communication errors and failures regarding your network environment and external devices.
· Disable the firewall setting on your computer. Otherwise, “Locate” will not recognize the 50CU.

NETWORK terminal
Ethernet cable

Computer

Switching hub

Mobile device AP

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To connect the 50CU directly to your Windows PC/ Mac using an Ethernet cable
If your computer is equipped with an NIC (Network Interface Card), you can also connect the 50CU directly to the computer using an Ethernet cable. NOTICE · Be careful NOT to connect the Ethernet cable from the
computer to the CU LINK terminal or DU CHAIN terminal. This can cause damage to the computer.
1 Use an Ethernet cable (straight) to connect the
NETWORK terminal on the 50CU and the Ethernet terminal on a computer/Mac.
2 In the network settings on your Windows PC/Mac,
select “Obtain an IP address automatically” on your Windows PC, or “Using DHCP” on your Mac, and then save the settings.
3 Start up the 50CU and from the Set Menu System Info IP Config Mode , select Auto . ( page 10).
4 Press the BACK button to close the Set Menu.
· After changing the network setting item(s), restart the 50CU to enable the setting values.
Since there is no DHCP server, IP addresses are automatically assigned to the Windows PC/Mac and the 50CU using the APIPA (Automatic Private IP Addressing) feature.
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ATUC-IR System

Example of IR system connections
Device equipped with Dante*

Windows/Mac
Web Remote Control

Tablet
Web Remote Control

AP

CD player Microphone USB device for recording/SFX (mass storage device)
IRCU
IRD

Router Switching hub
Amplifier

Speaker

Recorder IRD

IRA

IRA

IRA

IRA

IRA

IRA

IRDU

IRDU

IRDU

*The ATUC-IRCUDAN can be connected to Dante-enabled devices.

IRDU

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IRDU

IRDU

Part Names and Functions (ATUC-IR System)
ATUC-IRCU/ATUC-IRCUDAN Front panel

Power switch Turns the power on and off.
USB terminal The following operations are possible by connecting a USB device (mass storage device) such as a USB flash drive or USB hard drive. · Recording sound · Playing buzzer and chime · Importing/exporting preset data · Upgrading the firmware
NOTICE · Supports FAT16 and FAT32 file systems · Maximum storage capacity: 2 TB · Maximum file size: 2 GB · Does not support USB hubs. · Do not use extension cables. · Do not attempt to use USB devices (mass storage devices) that have been cracked, deformed or repaired using adhesive tape or the like. · Do not save or create any files or folders unnecessary for this system on the USB device (mass storage device). Doing so may affect system operations. · The IRCU/IRCUDAN are not compatible with USB devices (mass storage device) with special functions such as a security function.

USB access indicator Indicates the connection status of the USB device (mass storage device). · In an access state: lit green
NOTICE · Do not remove the USB device (mass storage device) while the indicator is lit green; doing so may destroy data.

REC (recording) indicator Indicates the recording status. · In a recording state: lit green · In a recording-pause state: blinks green · While not recording: remains off
NOTICE · If you remove the USB device (mass storage device) while in a recording state or recording-pause state, the recorded file may not be written correctly. Do not remove the USB device (mass storage device) during recording.

DU CHAIN indicator · In a normal state: lit green · In an abnormal state (such as when IRDU communications fail): blinks green · In a DU disconnected state: remains off
IRDU LINK indicator · In a normal state: lit green · In an abnormal state (such as when IRDU communications fail): blinks green · In an IRDU disconnected state: remains off
CU LINK indicator · In a CU Link state: lit green · In an abnormal state (such as when failing in communication with a CU): blinks green · In a CU Link cut- off state: remains off
REMOTE (remote control) indicator · In a communication state: lit green · In an abnormal state (such as when failing in external transmission retry): blinks green · In a non-communication state: remains off
SIGNAL/PEAK indicator Indicates the audio signal level as follows: ­ 60dBFS or higher: lit green ­ 20dBFS or higher: lit amber ­ 2dBFS or higher: lit red Adjust the level so it does not light red while operating.
Display
BACK button Returns to the previous or upper screen/item. Press and hold this button to return to the HOME screen from any screen.

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Jog dial/ENTER button Rotate the jog dial to select the desired item and then press the ENTER button to confirm. Rotating the jog dial also adjusts the setting values.
· Locking the operation buttons (Key Lock function) Press the BACK button and ENTER button simultaneously for over 2 seconds to activate the Key lock function, and thus lock all front panel operations except for the Power switch.
· Unlocking the operation buttons When the operation buttons are locked, press the BACK button and ENTER button simultaneously for over 2 seconds to unlock the operation buttons.
Display and jog dial operations:
HOME screen

1

2

3

4

The item with is the currently selected item. By rotating the jog dial, move to select the operation you want to perform and then press the ENTER button.

1 Master level adjustment (Lvl)
Master level -50 -40 -30 -20 -12 -6 0 6 12 Peak (dBu)

  • Rotate the jog dial to adjust the IRCU output level (OUTPUT 1).
    · While pressing the ENTER button, rotate the jog dial to adjust the level in 10-step increments.
    · Be sure that the Peak indicator does not light up while adjusting the level.
    2 Recording operations (Rec)
    R (Remaining recording time)/E (Elapsed recording time) display -50 -40 -30 -20 -12 -6 0 6 12 Peak (dBu)

3 Conference preparation (Pst)
· [1] Recall Presets : Rotate the jog dial to move “>” to the item you want to recall and then press the ENTER button to confirm.
· [2] Conf. Setup : Change or check the conference settings. Rotate the jog dial to move “>” to the item you want to change or check and then press the ENTER button to confirm. Pst Menu Items: Settings can also be configured via Web Remote. The item names in parentheses ( ) are for Web Remote. [1]Recall Presets [2]Conf. Setup 01 Conference Mode (Conference Mode) 02 NOM (Number of Open Mics) 03 Auto Mic Off (Auto Mic OFF) 04 Override Mode (Override Mode) 05 Max Queue (Maximum in Queue) 06 MicON Trigger (Mic ON Trigger / Mic ON Trigger for Priority) 07 MicON Hold Time (Mic ON Hold Time) 08 Interrupt Option (Interrupt Option)
· Items that can be configured from [2] Conf. Setup differ depending on the conference mode.
· For details on items, see “Menu items” in the Web Remote Manual.
4 Configuring settings (Set) Rotate the jog dial to move “>” to the desired item or value and then press the ENTER button to confirm. For details on setting items, see “Set Menu Items” (page 54).

  • Rotate the jog dial to select Rec (Start recording)/ Pau (Pause)/Stp (Stop)/R or E (Recording time display) and then press the ENTER button to confirm.
    · Select the time display on the top right side of the screen using the jog dial and then press the ENTER button to switch the display between R (Remaining recording time)/E (Elapsed recording time).
    · To adjust the recording level, move to the recording level meter at the top left of the screen to display Rec Lvl and then press the ENTER button to enter recording level adjustment mode. Rotate the dial to adjust the recording level being sure that the Peak indicator does not light up.
    · While pressing the ENTER button, rotate the jog dial to adjust the level in 10-step increments.

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Rear panel

  • The serial number label is located on the top panel.

NOTICE · Refer also to the instruction manuals supplied with the external devices.
· Be careful NOT to connect the Ethernet cable from your network device to the CU LINK terminal or DU CHAIN terminal. This can cause damage to the connected device.

NETWORK terminal · RJ-45 · Use for connecting to a local area network when controlling from an external device via the Web Remote Control or IP remote function.

Dante network terminals (ATUC-IRCUDAN) · RJ-45 · Connect to Dante audio network, or use for connections when controlling externally through Web Remote/IP remote. · The primary terminal and secondary terminal mode settings are shown in the following table.

Mode

Connected device

Primary

Secondary

Switched

Dante network Web Remote/external control

Dante network Web Remote/external control

Redundant

Dante network (primary) Web Remote/external control

Dante network (secondary)

Split (Default)

Web Remote/external control

Dante network

CU LINK A/B terminals, DU CHAIN C/D terminals · RJ-45 · Use for cascading multiple CUs. · You can also configure these terminals as DU/IU/INT terminals.
DU CHAIN A/B terminals · RJ-45 · Use for connecting DU/IU/INT. You can daisy- chain multiple DU/IU/INTs as well as connect multiple DU/IU/INTs in a ring using the A/B terminals.

Analog output (balanced) terminals: OUTPUT 1-4 (BAL) · Euroblock · Pin arrangement: “+” Hot/”­” Cold/”G” GND
Analog output (unbalanced) terminals: OUTPUT1 (UNBAL) · Euroblock · Pin arrangement: “SIG” Signal (2 systems)/”G” GND
Infrared input/output terminals: IR ANT Use for connecting ATUC-IRA. · BNC connector
Analog input (unbalanced) terminals: INPUT (AUX) · RCA
Analog input (balanced) terminals: INPUT (MIC/LINE 1-2) · Euroblock · Pin arrangement: “+” Hot (supports phantom power)/”­” Cold (supports phantom power)/”G” GND · The input type can be switched between MIC and LINE
Analog input (balanced) terminal: INPUT (INTERPRETATION RETURN 1-2) · Euroblock · Pin arrangement: “+” Hot/”­” Cold/”G” GND · Inputs audio signals from simultaneous interpretation system
Ground screw Since the supplied AC power cord has a three-pronged plug, as long as your AC power wall outlet is grounded properly, the CU will also be grounded properly.
AC inlet (AC IN) Connect the supplied AC power cord.
NOTICE · Do not plug in the AC power cord until all other connections, including CU extension and DU/IU/INT/ IRDUs, have been completed.
· Be sure that the CU is securely grounded to a single ground point. Grounding to multiple ground points can cause ground loops, resulting in noise generation such as a humming noise.

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ATUC-IRDU

PUSH

Built-in speaker Outputs conference audio.
Microphone release button
Microphone jack Connect a microphone. * A typical 3-pin XLR type microphone or an ATUC-M series microphone, can be connected.
Multifunction LED Indicates the state of talking on the IRDU. · While talking: lit red · While requesting to talk: blinks green · When talk request is rejected: blinks green (blinks 4 times quickly, then turns off ) · Talking off: off · Self-muting: lit white
· The LEDs can change to 9 colors. See the Web Remote Edition.
Multifunction button Press this button to send a request to talk. Press the button again to finish talking or cancel the request to talk. Also, if priority is set to on for an IRDU, pressing and holding this button can stop other IRDUs from talking or mute their audio.

When Priority Is Off

Two Person Mode

Conference Mode

Talk Mode

Left Button Right Button

Voice

Self Mute Self Mute

Free Talk

All Button Toggle

Self Mute

Talk ON

OFF

Push to Talk

Talk ON

Request to All Button

Talk

Toggle

Self Mute

Talk ON

Full Remote

Self Mute Self Mute

Talk ON

Free Talk

All Button Talk ON Talk ON Toggle (speaker 1) (speaker 2)

Push to Talk

Talk ON (speaker 1)

Talk ON (speaker 2)

Full Remote

Self Mute Self Mute

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When Priority Is On Talk Mode
All Button Toggle Push to Talk
Voice

Left Button* Cut/Mute Permit Next Cut/Mute Permit Next

Right Button Talk ON Talk ON Self Mute Self Mute

  • Depends on the “Left Button Function Assign” setting.
    (talk) LED
    Cut/mute LED monitor channel selection buttons While you use these buttons, the currently selected monitor channel appears on the display. · FL: Audio from floor channel · 01 – 03: Audio from groups 1 to 3. Display When changing the monitor channel or adjusting the volume level, the currently set value is displayed. Power LED The dot on the far right is always lit while the power is on. Infrared transmitter Rear LED Indicates the talking state and the remaining charge in the batte r y. · While talking: lit · While requesting to talk: blinks · Talking off: off (can be changed to dimmer) · Battery low: blinks orange · The LEDs can change to 9 colors.

Headphone jack Speech from the selected monitor channel is output.
­/+ Headphone volume adjustment buttons When operating these buttons, the current volume level (0 to 20) is shown on the display.
Power switch
AC adapter jack
Rechargeable battery/rechargeable battery cover release button
Service jack

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Range of light reception
The range at which the IRDU can receive infrared light is shown below.
ATUC-M
Microphone Ring LED Lights red when the microphone is activated. Blinks red while waiting to talk. Connector
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ATUC-IRA

Power LED Lights when the power to the IRCU is on, after wiring is complete.
Hook for mounting Use to mount on the mounting bracket (included accessory).
BNC connector * The BNC cable is not an included accessory.

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ATUC-IRD

BNC connectors
Connect to BNC cables. Mounting holes
Holes used to mount IRD. · The BNC cable is not an included accessory.
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ATCS-B60

<Charger (top view)>

Charging state indicator LED · Charging: Lights red · Charging complete: Lights green · Error: Flashes red
Power switch Turns the power on and off.
AC adapter connector Connect the connector from the AC adapter.

<Charger (side view)>

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Using the Charger
LED indicators · Charging (lights red) · Charging complete (lights green) · Error (flashes red)
1 Insert the rechargeable battery into the charger slot. If a rechargeable battery is facing the wrong way, the LED does not light.
2 Charging state indicator LED lights red. If a charging error occurs, the LED flashes red. If this happens, insert the rechargeable battery again.
3 Charging is complete when the charging state indicator LED lights green. Charging finishes within about 5.5 hours. Charging times vary depending on the charge remaining in the rechargeable batteries.
NOTICE · Operating temperature is 10 to 30°C and storage temperature is 0 to 20°C. · Remove the rechargeable batteries from the B60 if they will not be used for an extended period of time. If you leave the rechargeable batteries in the B60, while its power is turned off, for a long period of time, the rechargeable batteries will over discharge, which may drastically shorten their service lives or prevent them from recharging. If you will not be using the rechargeable batteries for a long time, store them without charging them, and then recharge them before you use them. · They can be recharged about 300 times.
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Using Dante
The IRCUDAN supports Dante network audio. It is possible to output ATUC-IR audio to a Dante device or to input audio from a Dante device to an IRCU. For details about Dante network audio, see the Audinate home page (www.audinate.com).

Connecting IRCUDAN in a Network

Network terminal mode settings
1. Explanation for setting up from OLED Set menu System settings Network Config, and then set Config Mode.
2. Setting up from Web Remote See the Web Remote Edition of the instruction manual.
· The settings can also be changed from the Dante Controller (an application provided by Audinate) For details about Dante Controller, see the Audinate home page (www.audinate.com).
Connections in different modes
Switched (default settings)

PC

Mobile device

Device equipped with Dante
PRIMARY SECONDARY

Switching hub
Device equipped with Dante
PRIMARY SECONDARY

Device equipped

PC

with Dante

PRIMARY SECONDARY

  • Switching hubs used in Dante networks must be gigabit compatible. Refer to the Audinate page for specifications required for switching hubs that can be used.
    Connect Dante audio and the external control of the IRCU to either the primary or secondary terminal. As shown in the diagram, you can connect a PC or Dante device directly to the network port on the IRCU.

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Redundant Audio

Switching hub

Switching hub

SECONDARY PRIMARY
Device equipped with Dante
SECONDARY PRIMARY

In redundant audio mode, independent networks for both the primary and secondary are needed. If a fault occurs, for whatever reason, on the Dante primary side network, the system automatically switches to the Dante audio on the secondary network.
Split

PC

Mobile device

Switching hub
Device equipped with Dante
PRIMARY SECONDARY

Switching hub

In split audio mode, independent networks for both the primary and secondary are needed. The primary is the IRCU external control terminal and the secondary is the Dante audio terminal.

IRCU Dante channel list

No

Dante transmission channel

1 Active Mic 1

2 Active Mic 2

3 Active Mic 3

4 Active Mic 4

5 Active Mic 5

6 Active Mic 6

7 Active Mic 7

8 Active Mic 8

9 Active Mic 9

10 Active Mic 10

Dante Receiving channel Mic/Line 1 Mic/Line 2 Aux L Aux R Language1-1 Language1-2 Language2-1 Language2-2 Language3-1 Langauge3-2

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No

Dante transmission channel

11 Mic/Line 1

12 Mic/Line 2

13 Aux L

14 Aux R

15 Retrun 1

16 Return 2

17 Output 1

18 Output 2

19 Output 3

20 Output 4

21 Group 0

22 Group 1

23 Group 2

24 Group 3

25 Floor

26 Language 1

27 Language 2

28 Language 3

Dante Receiving channel

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Changing settings on the ATUC-IRCU/ ATUC-IRCUDAN

You can change IRCU/IRCUDAN settings by selecting “Set” on the HOME screen of the display. Changeable items are as follows. For more detailed settings and individual settings for each DU/IU/ INT, use Web Remote.
· If you change the network setting item(s), then you must restart the IRCU/IRCUDAN to enable the setting values.

Set Menu Items
[1] System Setting 01 Device Name 02 Link Port Set 03 CU Error Notice 04 Network Config
01 Config Mode
02 Latency
05 IP Setting 01 IP Port Set. 01 IP Config Mode 02 IP Address 03 Subnet Mask 04 Gateway Address 02 Dante Port Set. 01 IP Config Mode 02 IP Address 03 Subnet Mask 04 Gateway Address
06 Allow Discovery 07 IP Ctrl Setting
01 IP Ctrl Port No 02 IP Ctrl Ntfy 03 Audio Level Ntfy 04 M-cast Adrs 05 M-cast Port No 08 Auto Mode Change 01 Auto Mode Change 02 Hold Time(Err) 09 NTP Setting 01 NTP 02 NTP Adrs 03 NTP Port 04 Time Zone 05 DST 06 DST Start Date 07 DST Start Time 08 DST End Date 09 DST End Time 10 Infrared Setting 01 IRDU No toDetect 02 Limit NOM

ATUC-IR CU A/B, DU C/D On, Off
Switched, Redundant Audio, Split 250 sec, 500 sec, 1 msec, 2 msec, 5 msec
Auto, Static 0.0.0.0 – 255.255.255.255 0.0.0.0 – 255.255.255.255 0.0.0.0 – 255.255.255.255
Auto, Static 0.0.0.0 – 255.255.255.255 0.0.0.0 – 255.255.255.255 0.0.0.0 – 255.255.255.255 On, Off
00001 – 65535 On, Off On, Off 0.0.0.0 – 255.255.255.255 00001 – 65535
On, Off 20, 30, 40 seconds
On, Off 0.0.0.0 – 255.255.255.255 00001 – 65535 UTC ­12:00 – +14:00 On, Off 1/1 – 12/31 0:00 – 23:00 1/1 – 12/31 0:00 – 23:00
0 – 200 On, Off

03 IRDU Band 01 Band A 02 Band B 03 Band C 04 Band D 05 Band E 06 Band F 07 Band G 08 Band H 09 Band I 10 Band J
11 Login Password 01 Admin.Pwd.Login 02 Admin.Password 03 Opr.Pwd.Login 04 Opr.Password
12 Reset All Dflt.
[2] System Info 01 Device Name 02 Serial Number 03 ATUC-IR CUFW Ver 04 ATUC-IR IRFW Ve 05 IP Config Mode 06 IP Address 07 Subnet Mask 08 Gateway Address 09 Mac Address 10 Dante 01 Device Name 02 Firmware Ver. 03 Config Mode 04 Connect Status-P 05 IP Mode-P 06 IP Address-P 07 Subnet Mask-P 08 Gateway Adrs-P 09 Mac Address-P 10 Connect Status-S 11 IP Mode-S 12 IP Address-S 13 Subnet Mask-S 14 Gateway Adrs-S 15 Mac Address-S 16 Latency 11 Allow Discovery 12 IP Ctrl Port No 13 IP Ctrl Ntfy 14 Audio Level Ntfy 15 M-cast Adrs 16 M-cast Port No 17 NTP 18 NTP Adrs 19 NTP Port 20 Time Zone 21 CU Link Status 22 No.ofExtensionCU

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Enabled, Disabled Enabled, Disabled Enabled, Disabled Enabled, Disabled Enabled, Disabled Enabled, Disabled Enabled, Disabled Enabled, Disabled Enabled, Disabled Enabled, Disabled
On, Off Displays password On, Off Displays password
Displays current settings

23 Total No.of IRDU 24 Total No.of DU 25 Total No.of IU 26 Total No.of INT [3] Audio Setting 01 MIC/LINE Input 1
01 Input Type 02 Input Gain 03 Level 04 Phantom Power 05 Mix to Floor 01 MIC/LINE Input 1 01 Input Type 02 Input Gain 03 Level 04 Phantom Power 05 Mix to Floor 03 AUX Input 01 Input Type 02 Level 03 Mix to Floor 04 DU SP Output Lvl 05 DU Floor Lock 06 VoiceDetectSens 07 Auto to Mic2 In [4] Recorder Setting 01 Rec Format 02 No.of Rec CH
03 Rec Source CH1
04 Rec Source CH2
05 Rec Source CH3
06 Rec Source CH4
07 Auto Track 08 Filename Prefix [5] Conference Mode 01 Conference Mode 02 NOM

Mic, Line +4dBu, Line 0dBV, Dante ­24dB – +20dB ­, ­120 – +10dB On, Off On, Off
Mic, Line +4dBu, Line 0dBV, Dante ­24dB – +20dB ­, ­120 – +10dB On, Off On, Off
Analog, Dante ­, ­120 – +10dB On, Off 0 – 20 On, Off 5, 4, 3, 2, 1, 0, 1, 2, 3, 4, 5 On, Off

03 Auto mic Off
04 Override Mode
05 Max Queue
06 MicON Trigger
07 MicON Hold Time 08 Interrupt Option [6] Logging 01 Logging 02 Destination [7] Presets 01 Recall Presets 02 Save Presets 03 Import Presets 04 Export Presets 05 Boot Up Preset

5 – 60sec, Off No Override, FIFO, LIFO (depending on Conference Mode) 0 – 150 All Button Toggle, All Voice, All Push-to-Talk 1.0 – 10.0 seconds Cut, Mute
On, Off Internal, USB
Recalls presets Saves presets Imports presets Exports presets Calls presets at boot up

Entering letters

Entering text is the same operation as for the 50CU. Refer to
“Entering letters” (page 23)

WAV, MP3
1 – 4 (WAV), 1 – 2 (MP3)
Floor, Group 0, Group 1, Group 2, Group 3, Language 1, Language 2, Language 3, Remote Lang. 1, Remote Lang. 2, Mic/Line 1, Mic/ Line 2, Mic/Line 1&2 Mix
Floor, Group 0, Group 1, Group 2, Group 3, Language 1, Language 2, Language 3, Remote Lang. 1, Remote Lang. 2, Mic/Line 1, Mic/ Line 2, Mic/Line 1&2 Mix
Floor, Group 0, Group 1, Group 2, Group 3, Language 1, Language 2, Language 3, Remote Lang. 1, Remote Lang. 2, Mic/Line 1, Mic/ Line 2, Mic/Line 1&2 Mix
Floor, Group 0, Group 1, Group 2, Group 3, Language 1, Language 2, Language 3, Remote Lang. 1, Remote Lang. 2, Mic/Line 1, Mic/ Line 2, Mic/Line 1&2 Mix
Off, 15, 30 min, 1, 2 hour
Displays filename prefix

Free Talk, Request Talk, Full Remote
1 – 10

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IR System Connections and Configuration

Connecting devices

1 Connecting IRA and IRCU

NOTICE · Do not plug in the supplied AC power cord until all other connections have been completed.
· When connecting devices, plug the connectors securely all the way in. Loose connections may cause malfunctions or noise.
· Check the plug orientations. · Refer also to the instruction manuals supplied with the
external devices.
Entire system connection diagram

1 Install the IRCU and IRA.
NOTICE · Install the IRCU on a flat surface. Dropping a unit may cause damage to the unit and/or personal injury.
· When installing the IRCU in a rack, read the precautions
in advance ( page 5).
· Refer to the Instruction Manual – Installation Edition to install the IRA.
2 Use BNC cable to connect the IRCU and IRA.

1

24

2 Connecting the microphone ATUCM to the IRDU
1 Connect the ATUCM to the microphone jack on
the IRDU.

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NOTICE · Insert it until you hear a click.
· Do not lift the IRDU by holding the ATUC-M. Be sure to hold the main body of the IRDU when holding it.
· Slowly bend or extend the flexible part of the ATUC-M. Do not apply excessive force to the ATUC-M when bending it.
· W hen disconnecting the ATUC-M from the IRDU, securely hold the connector while pressing down the microphone release button and then remove the ATUC-M.
· Before connecting/disconnecting the ATUC-M, be sure to turn off the power. If you do not turn off the power, a malfunction may occur.

When removing the rechargeable batteries: While pressing the rechargeable battery/rechargeable battery cover release button, slide the rechargeable battery in the direction of the arrow.
Press to remove rechargeable batteries

3 Starting the IRDU
1 Insert the rechargeable batteries into the IRDU.
Insert the rechargeable batteries into the bottom of the IRDU. Then, just slide the rechargeable batteries in the direction of the arrow to secure them. There is a click sound so you can confirm that the batteries are securely mounted.

NOTICE · You can install two rechargeable batteries, but one is enough to operate. If you install both rechargeable batteries, power is consumed from the first one.
· The IRDUs do not have a recharging function. To recharge them, use Audio Technica’s specialized charger ( ATC S -B 6 0 ) .

If you are using an AC adapter (sold separately): Attach the rechargeable battery covers to the IRDU.
NOTICE · Extend the cord of the AC adapter through the hole for the cord.
· Do not pinch the cord when you attach the rechargeable battery covers. Doing so may cause the cord to break.

4 Setting Device ID for IRDU
You need to set individual IDs for each IRDU before you can use them. They cannot be used correctly if you do not set the ID numbers. There are two setting methods. “Auto Setting” automatically assigns an ID in the order the IRDUs are connected to the IRCU. With “Manual Setting”, you set the ID on the IRDU itself. · This setting is done only one time and the ID numbers are
recorded in memory. · You can use 200 ID numbers, from 001 to 200, but no other
numbers can be set. (All the numbers are set to 001 at the factory.)
Auto setting:
While pressing the “BACK” button, turn on the IRCU to enter the device ID setting mode.
When “audio-technica ATUC-IR” appears in the OLED, release the “BACK” button.
Wait until the OLED display changes to “ATUC-IRDU Device ID Auto Assign Mode…”, then, while pressing the “<“/”>” monitor channel selection buttons, turn on each IRDU one at a time in order.
The IDs are automatically assigned in the order in which you turn the IRDUs on. After you have confirmed the ID, press the right multifunction button to set the ID. You can also set any ID you want by doing the same operation as “Manual Setting”.
After setting all the IDs, restart the IRCU.

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NOTICE · For any DUs that were not assigned an ID, such as due to poor infrared transmissions, turn off their power, and then, while pressing on the “<“/”>” monitor channel selection buttons, turn on the power and perform “Auto Setting” or “Manual Setting” to specify the ID.
Manual settings: While pressing the “<“/”>” monitor channel selection
buttons, press the power switch. Look at the display to input the ID number you want.
<Example: To set ID number “152”> 1 While pressing the “<“/”>” monitor channel selection buttons,
press the power switch. 2 Press the “<“/”>” buttons so the 2 appears as the first digit. 3 Press the left multifunction button to set the second digit. 4 Press the “<“/”>” buttons so the 5 appears as the second digit. 5 Press the left multifunction button to set the third digit. 6 Press the “<“/”>” buttons so the 1 appears as the third digit. 7 Press the right multifunction button to apply the setting.
(After step 7, you can use the system in regular modes.) Additional procedures closely follow the procedures for the ATUC-
50 system. Refer to “4 Connecting an amplifier” (page 37) in
” Wired System Connections and Configuration”.
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ATUC-50/IR Hybrid System

The ATUC-50 wired conference system and the ATUC-IR infrared conference systems can be combined, and operated as a hybrid conference system. Refer to both the wired conference system and infrared conference system sections in this manual to operate a hybrid conference system.

Example of hybrid system connections

Windows/Mac
Web Remote Control

Tablet
Web Remote Control

AP

50CU (Extension)

50CU (Extension)

USB device for recording/SFX (mass storage device)
Microphone

IRCU (Primary)

CD player

IU EXT
DU EXT

INT DU
IU
IU

Router Switching hub
Amplifier

Speaker

Recorder IRD

IRA

IRA

IRA

IRD IRDU

IRDU

IRDU

IRA

IRA

IRA

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IRDU

IRDU

IRDU

Hybrid System Connections and Configuration
About Wired System and IR System Connections and Configuration
Refer to both the wired conference system and infrared conference system sections in this manual regarding connections and configurations to operate a hybrid conference system.
” Wired System Connections and Configuration” (page 26) “IR System Connections and Configuration” (page 56)

IRCU (Primary)

50CU (Extension)
50CU (Extension)

DU (Max. 100 units)

DU (Max. 100 units)

DU (Max. 100 units)

IRD

IRD

IRA

IRDU (Max. 200 units)

Maximum number of connections for each terminal/each CU in Standalone mode

Maximum number of terminal connections in a DU CHAIN

A

B

C

D

Total

Maximum number of IR connections

Daisy-chain

50

50

50

50

100

connection

200

Ring connection

50

50

100

System total
300 300

  • The maximum number of units that can be connected to each terminal on the DU CHAIN by using the EXT is 100 units.
    · IUs consume more power than 50DUs, so the number of units shown in the table cannot be connected without the use of the appropriate number of EXTs. If you connect that many without the use of the appropriate number of EXTs, it may damage the CUs or the EXTs.
    Refer to the table “Relationship of the LAN cable length, number of units connected and number of EXTs required” (page 29, 33)
    regarding the number of IUs that can be connected.

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Maximum number of connections for each terminal/each CU when using 3 CU links

IRCU Primary

50CU Extension max. 2 units

Maximum number of terminal connections in a DU
CHAIN

Maximum number of
IR

A

B

Total connections

Maximum number of terminal connections in a DU CHAIN

System total

50CU x 2

A

B

Total

Total

Daisy-chain connection

50

50

100

200

Ring connection

50

50

50

50

50

100

200

500

50

100

350

NOTICE · Up to 6 INTs can be connected to the primary.

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About CU link connections: IRCU/IRCUDAN as primary and up to 2 50CUs as extension can be cascaded (use the CU LINK A/B terminals for connections as shown below). Since up to 100 50DU/INTs can be connected to each CU, if you use 3 CUs, up to 300 50DU/INTs can be connected in total.
Follow the procedure below to cascade CUs. Connect the CU LINK A terminal on the 1st extension CU to the CU LINK B terminal on the primary CU. When cascading 2 extension CUs, connect the CU LINK A terminal on the 2nd extension CU to the CU LINK B terminal on the 1st extension CU.
IRCU/IRCUDAN primary

Terminal A is not used.

1st 50CU extension

Up to 100 units

Primary/Extension (CU Link Mode ):

2 CU LINK

1st extension Extension last unit

2nd extension –

3 CU LINK

Extension pass-through Extension last unit

NOTICE · Settings on the IRCU/IRCUDAN that is the primary are not needed.

  • You can either daisy-chain (page 27) or ring (page 27) 50DU/INTs to each CU.
    NOTICE · Up to 6 INTs can be connected to the primary CU. They cannot be connected to extension CUs.
    · If you are using CU LINK connections, do not use the
    Boot Up Preset function (page 55) because it will not
    operate correctly.

2nd 50CU extension

Up to 100 units (INTs cannot be connected)

Up to 100 units (INTs cannot be connected)
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Information

Troubleshooting

If a problem should arise, first check the following: 1. Check your connections. 2. Verify that the system is being operated as described in this instruction manual. 3. Check that the external devices are operating properly. Check the operation while the devices are not connected to the CU. 4. Restart your network devices. If any unit in the system is not operating properly, check the items listed in the table below. If the symptom is not covered on the checklist below, contact our sales representative.
W hen you contact us, you may be asked the firmware version. Please check the firmware version by following the procedure below.
To check from Web Remote: [Settings & Maintenance] [System Settings] [Utilities] or [Settings & Maintenance] [System Info] To check on the CU display: Set Log in as Administrator or Operator System Info

ATUC50CU/ATUCIRCU/ATUCIRCUDAN

Symptom

Cause/Solution

Cannot turn on the power.

Check that the AC power cord is connected properly.

Check the connection of the microphone.

Check and adjust the MIC/LINE 1/2 settings.

The connected microphone does not work.

To check from Web Remote: [Settings & Maintenance] [Install Settings] [CU Audio] [Input Settings]

To check on the CU display: Set Log in as Administrator or Operator Audio Setting

Check the connections of all devices.

Plug the connection cables all the way in.

The sound from the connected speaker Check that the inputs and outputs of all devices are connected properly.

is distorted or cannot be heard.

Check that terminal pin assignments (Hot/Cold/GND, etc.) are correct.

Check that the cables are not damaged.

Check and adjust the setting of the connected amplifier.

Cannot record sound.

Check the remaining memory on the USB device (mass storage device).
Reconnect the USB device (mass storage device) or try with a different USB device (mass storage device).

Check that the recording channel set from [Rec source] is correct.

Although recording has performed properly, when playing the recorded files using a device such as a computer, no sound is heard.

To check from Web Remote: [Settings & Maintenance] [Install Settings] [Recorder] [USB Recorder Settings] To check on the CU display: Set Log in as Administrator or Operator Recorder Setting

Page page 37 page 11
page 10
page 11 –
page 11 page 11

page 10

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Symptom You forget the password.

Cause/Solution
Follow the procedure below to reset the password. Display the HOME screen of the CU display and then while pressing the BACK
button on the CU front panel, rotate the jog dial clockwise until it clicks 3 times. While pressing the BACK button, rotate the jog dial counterclockwise until it
clicks 3 times. While pressing the BACK button, press the ENTER button.

Page page 9

ATUCIRCUDAN

Symptom Cannot get recognition from Dante controller.
Dante audio is not being input. Dante audio is not being output.

Cause/Solution Check the connections of the LAN cables. Check the Dante network settings.
To check from Web Remote: [Settings & Maintenance] [System Settings] [Network/Dante] Check whether the audio routing on Dante controller is correct. Check whether the input audio settings on Web Remote are correct. “DANTE” must be selected as the type for input settings in [Settings & Maintenance] [Install Settings] [CU Audio] [Input Settings] screen. Check whether the audio routing on Dante controller is correct.

Page page 51 page 54
page 55

ATUC50DU/INT
Symptom Cannot turn on the power.
The (talk) button does not function.
No sound is output from the headphone jack.

Cause/Solution
Check the connection to the CU or other DUs/INTs.
Depending on the conference mode or setting, the (talk) button may not function. Check the conference mode settings.
To check from Web Remote: [Settings & Maintenance] [Install Settings] [Conference] [Conference Mode] To check on the CU display: Set Log in as Administrator or Operator Conference Mode The settings of the interpretation unit(s) may cause speech to be output incorrectly, even if the talk button is pressed to speak. Check the settings of the interpretation unit(s).
To check from Web Remote: [Settings & Maintenance] [Install Settings] [Interpretation] [Interpretation Settings] [Interpretation Mode] and [Settings & Maintenance] [Install Settings] [Interpretation] [INT Unit Settings] [Interpretation Languages] Insert the headphone plug all the way in.
Raise the volume with the + button.
Use the monitor channel selection button(s) of the DU/INT to confirm that you can monitor speech from the channel you want.

Page pages 26,
27
page 10

pages 12,
13 pages 12,
13

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Symptom
No sound is output from the built-in speaker.
The ATUC-M does not operate. If you read the preset, the settings changed from the last settings.

Cause/Solution
Check the connection of the DUs.
Plug the Ethernet cable all the way in.
Check that the cables are not damaged.
From [Settings & Maintenance] [Install Settings] [DU/IU] [DU/IU Detail Settings], check that the [Speaker] setting is set to [Enabled].
Adjust the speaker level.
To check from Web Remote: [Settings & Maintenance] [Install Settings] [DU/IU] [Global DU/IU Settings] [Speaker Level] To check on the CU display: Set Log in as Administrator or Operator Audio Setting DU SP Output Lvl
Speech is not output from the built-in speaker of the INTs.
Insert the ATUC-M connector into the microphone jack on the DU/INT until a clicking sound is heard.
For DUs: From [Settings & Maintenance] [Install Settings] [DU/IU] [DU/IU Detail Settings], check the setting of [Microphone].
For the INTs: From [Settings & Maintenance] [Install Settings] [Interpretation] [INT Unit Settings] [INT Unit Detail Settings] check the setting of [Microphone].
· Check that [Phantom Power] is not set to [Off ]. · Check that [Input Gain] is not too low.
Check that the preset data is correct.
Check that the number and topology of the DUs/INTs have not changed since the last time.

Page page 27

page 10
page 37

ATUC50IU
Symptom Cannot turn on the power.

Cause/Solution Check the connection to the CU or other DUs/INTs.

Page
pages 26, 27

ATLKEXT165
Symptom Cannot turn on the power.

Cause/Solution Check that the AC power cord is connected properly.

Page page 37

ATUCIRDU
Symptom Cannot turn on the power.

Cause/Solution Check the installation of the rechargeable batteries. Check the remaining charge in the rechargeable batteries.

Page page 57 page 50

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Symptom

Cause/Solution

Check the installation locations of the IRDUs and IRAs.

Initialization operation does not end (LEDs continue flashing).

There may be a limit on the number of IRDUs that are detected at system start. Check the infrared setting again. [Settings & Maintenance] [System Settings] [Infrared] If this is the case, connection is possible by operating any button on the IRDU.

Depending on the conference mode or settings, the (talk) button may not function. Check the conference mode settings.

To check from Web Remote: The (talk) button does not function. [Settings & Maintenance] [Install Settings] [Conference] [Conference Mode]

To check on the CU display: Set Log in as Administrator or Operator Conference Mode

Check the installation locations of the IRDUs and IRAs.

The sound from the connected microphone is distorted or cannot be heard.

Check the ID settings of the device.
There may be interference with the infrared. The problem may be solved by the settings for the infrared frequency that you are using. [Settings & Maintenance] [System Settings] [Infrared] [IRDU Band]

Insert the headphone plug securely all the way in.

No sound is output from the headphone jack.

Raise the volume with the + button on the IRDU.
Use the monitor channel selection button(s) to confirm that you can monitor speech from the channel you want.

From [Settings & Maintenance] [Install Settings] [DU/IU] [DU/IU Detail Settings], check that the [Speaker] setting is set to [Enabled].

Adjust the speaker level.

No sound is output from the built-in speaker.

To check from Web Remote: [Settings & Maintenance] [Install Settings] [DU/IU] [Global DU/IU Settings] [Speaker Level]

To check on the CU display: Set Log in as Administrator or Operator Audio Setting DU SP Output Lvl

Page –
page 54
page 10
page 57 page 54 page 45 page 45 page 45 page 27
page 10

ATUCIRA

Symptom
Cannot turn on the power to ATUCIRA.

Cause/Solution Check the connections of the cables. Check that the cables are not damaged.

Page page 56

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Error messages

  • Error messages displayed on the Web Remote screen and CU displays are as follows. · The states of the CU LED error indicators are described together with the CU display error messages. · If the same error persists even after the following remedies are taken, or when the unit(s) requires repair or parts replacement, contact our
    sales representative.

Web Remote Resume Data Error 1
Preset Data Error 2
DU Power Error
3
DU Communication Error 4
DU Ring to Daisy 5
DU Daisy to Ring 6
Number of DU Decreased 7
DU Exceeds 100 Units 8
INT Unit Exceeds 6 Units 9
DU A/B: Exceeds 50 Units 10
DU C/D: Exceeds 50 Units 11
CU Communication Error 12
CU Link OFF 13
Network Communication 14 Error

CU display (LED indicators) Resume Data Err
Pst Data Err
DU Power Err (DU CHAIN: blinks green)
DU Comm Err (DU CHAIN: blinks green) DU Ring to Daisy (DU CHAIN: blinks green)
DU Daisy to Ring (DU CHAIN: blinks green)
DU Number Decrease (DU CHAIN: blinks green)
DU Exceeds 100pcs (DU CHAIN: blinks green)
INT Exceeds 6pcs (DU CHAIN: blinks green)
DU A/B Exceeds 50pcs (DU CHAIN: blinks green) DU C/D Exceeds 50pcs (DU CHAIN: blinks green) CU Comm Err (CU LINK: blinks green) CU Link OFF (CU LINK: blinks green) Network Comm Err (REMOTE: blinks green)

State/remedies
Failed to read the resume information. · The unit was started up using the second from the last setting or default
setting. Although there is no functional limitation, be sure to restart the unit to check that the same error does not occur again.
Failed to read the preset data. · This error may occur when you recall the default preset or the preset which
you successfully recalled last time. Although there is no functional limitation, be sure to restart the unit to check that the same error does not occur again.
An error occurred when power was supplied to the DU. · Voltage may fall at the 48V output. After disconnecting all DUs from the CU, restart the CU. If the same error occurs again, the CU requires repair. If the same error does not occur again in but the error occurs again after connecting the DUs, there may be a damaged cable or DU. Identify the damaged cable or DU for replacement or repair.
DU individual settings cannot be configured. · Check that there is no DU connection error.
The DU topology has been changed (from ring to daisy). · If this error occurs even though you did not change the DU connection,
check that there is no DU connection error.
The DU topology has been changed (from daisy to ring). · If this error occurs even though you did not change the DU connection,
check that there is no DU connection error.
The number of connected DUs decreased. · If this error occurs even though you did not change the DU connection,
check that there is no DU connection error.
More than 100 DUs are connected to the DU CHAIN A/B/C/D terminals in total. · Connect 100 DUs or less to each CU.
More than 6 INTs are connected to the DU CHAIN A/B/C/D terminals in total. · Connect 6 INTs or less to CU.
More than 50 DUs are connected to the DU CHAIN A/B terminals in total. · Connect 50 DUs or less to the DU CHAIN A/B terminals in total.
More than 50 DUs are connected to the DU CHAIN C/D terminals in total. · Connect 50 DUs or less to the DU CHAIN C/D terminals in total.
A communication error occurred between the CUs. · Check that there is no CU connection error.
CU Link is cancelled. · If this error occurs unexpectedly, check that there is no CU connection error.
(1) A network communication error occurred. (2) An IP command communication error occurred. · Check that there is no network connection error.

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Web Remote USB Access Error 15
USB Format Error 16
Failed

CU display (LED indicators) USB Access Err
USB Format Err
Failed

17

File Export Failed 18
File Import Failed 19
USB Write Error
20

USB Write Err

Failed. Please turn power OFF. CU FW Update Err

21

Please Turn Pwr OFF

Failed. Please turn power OFF. IRCU FW Update Err

22

Please Turn Pwr OFF

Failed. Please turn power OFF. DU FW Update Err Please Turn Pwr OFF
23

Failed. Please turn power OFF. INT FW Update Err Please Turn Pwr OFF
24

State/remedies
An error occurred when accessing the USB device (mass storage device). · Check that the USB device (mass storage device) has no problems. · Check that the same error does not occur with another USB device (mass
storage device).
There is a problem with the USB device (mass storage device). · Check the format of the USB device (mass storage device). · Use a USB device (mass storage device) formatted with FAT16 or FAT32.
(1) The setting cannot be configured due to some system errors. · Try to configure the setting again and check whether the same error occurs
again.
(2) Playback operation cannot be performed. · Check that the USB device (mass storage device) is connected properly. · Check that the file you want to play is in the USB device (mass storage
device). · Check that the format of the file you want to play is correct. (You can check
by, for example, playing the file with another playback device.)
(3) Recording operation cannot be performed. · Check that the USB device (mass storage device) is inserted in the CU. · Check that write protection is disabled on the USB device (mass storage
device). · Check the space available on the USB device (mass storage device). · Check that the USB device (mass storage device) has no problems. · Check that the same error does not occur with another USB device (mass
storage device).
(4) The preset data cannot be exported. · Check that the USB device (mass storage device) has no problems. · Check that the same error does not occur with another USB device (mass
storage device).
(5) The preset data cannot be imported. · Check that the USB device (mass storage device) has no problems. · Check that the same error does not occur with another USB device (mass
storage device).
The data log cannot be saved onto the USB device (mass storage device). · Check that the USB device (mass storage device) is inserted to the CU. · Check that write protection is disabled on the USB device (mass storage
device). · Check the space available on the USB device (mass storage device). · Check that the USB device (mass storage device) has no problems. · Check that the same error does not occur with another USB device (mass
storage device).
An error occurred during the CU firmware update. · Turn off the power and restart the CU.
An error occurred during the IRCU firmware update. · Turn off the power and restart the system.
An error occurred during the DU firmware update. · Turn off the power and restart the CU.
(W hen the update cannot be performed for the 1st DU, or an error occurs during the update process and the update cannot be continued.)
An error occurred during the INT unit firmware update. · Turn off the power and restart the CU.
(W hen the update cannot be performed for the 1st INT, or an error occurs during the update process and the update cannot be continued.)

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Web Remote

CU display (LED indicators)

Failed. Please turn power OFF. IU FW Update Err Please Turn Pwr OFF
25

Completed except serial numbers below. Please turn power OFF.

Part of DU Failed Please Turn Pwr OFF

26 XXXXXXXX XXXXXXXX (Displays a list of 8-digit serial numbers of DUs for which the update cannot be performed.)

Completed except serial numbers below. Please turn power OFF.

Part of INT Failed Please Turn Pwr OFF

27 XXXXXXXX XXXXXXXX (Displays a list of 8-digit serial numbers of INTs for which the update cannot be performed.)

Completed except serial numbers below. Please turn power OFF.

Part of IU Failed Please Turn Pwr OFF

28 XXXXXXXX XXXXXXXX (Displays a list of 8-digit serial numbers of IUs for which the update cannot be performed.)

Data acquisition error. 29

Data Acquisition Err

Unable to Set

Unable to Set

30 Can’t.ReducePriority

All DUs will be turned off to Turn OFF All DU? apply the changes. Do you wish to proceed?
31

Unable to control. 32

Unable to Ctrl

State/remedies
An error occurred during the IU firmware update. · Turn off the power and restart the CU.
(W hen the update cannot be performed for the 1st IU, or an error occurs during the update process and the update cannot be continued.)
The DU firmware update has been completed but the update cannot be performed for some DUs. The serial numbers of DUs for which the update cannot be performed will be listed on the pop-up screen. Write them down. Turn off the power. Disconnect the DUs with the serial numbers you wrote down. Perform emergency update for the DUs you disconnected in step . For details on how to perform the emergency update, contact our sales representative.
The INT unit firmware update has been completed but the update cannot be performed for some INTs. The serial numbers of INTs for which the update cannot be performed will be listed on the pop-up screen. Write them down. Turn off the power. Disconnect the INTs with the serial numbers you wrote down. Perform emergency update for the INTs you disconnected in step . For details on how to perform the emergency update, contact our sales representative.
The IU firmware update has been completed but the update cannot be performed for some IUs. The serial numbers of IUs for which the update cannot be performed will be listed on the pop-up screen. Write them down. Turn off the power. Disconnect the IUs with the serial numbers you wrote down. Perform emergency update for the IUs you disconnected in step . For details on how to perform the emergency update, contact our sales representative.
Failed to acquire data through operation via Web Remote or the CU display. · Perform the operation again and check whether the same error occurs.
(1) Unusable characters are contained in the string of letters you have entered. · Delete unusable characters.
(2) The change cannot be applied because the entered values are out of the permitted range or the change is not allowed. · Enter values within the permitted range. · Check that the unit is in a state where changes are allowed and then perform
the operation again and check whether the same error occurs.
(3) The setting of [Number of Open Mics] (NOM ) cannot be changed due to the current number of priority DUs. · Set a different number for [Number of Open Mics] (NOM ) or change the
number of priority DUs.
(4) Since recording, recording pause, or file reading process is under way, any recording-related settings cannot be configured. · Stop recording and then perform the operation again.
(5) You must turn off the microphones for all of the DUs in order to change the settings. · Selecting [Yes] forces the microphones for all of the DUs off and changes the
settings.
(1) Since recording, recording pause, or file reading process is under way, the operation cannot be performed. (2) Due to other reasons, the operation cannot be performed. (Operations except changing settings cannot be performed.) · Stop recording and then perform the operation again.
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Web Remote
Number of IRDU exceeds 33 available IR Bands

CU display (LED indicators)
Pst Recall Err

Dante Communication Error 34

Dante Comm Err

Number of priority units

exceeds maximum. Reduced

35 priority channels.

Unable to set. Number of

priority channels exceeds

36 maximum.

Recording Failed

37

Device ID XXX , Battery 1 Low

38

Device ID XXX , Battery 1

39 Depleted

Device ID XXX , Battery 2 Low

40

Device ID XXX , Battery 2

41 Depleted

Device ID XXX, IRDU Not

42 Responding

Boot Error XXX

43

Chg to FreeTalk Mode

44

Forcible FW Update

45

Connect USB Device

46

with FW Update File

Warning 60D

47

State/remedies
The preset file cannot be read. The number in [Number of Open Mics] exceeds the number of [IRDU Band] that are enabled. · Set [Limit NOM to Enabled IR Bands] in [Infrared Settings] to [Off ].
A communication error occurred with the Dante board. · Turn off the power and restart the system. Confirm that the same error does
not occur when the system is restarted.
The number of DUs which are set as priority DUs exceeded the limit due to CU Link. Decrease the number of priority DUs. (Deactivate the priority setting for some DUs.) · Check the priority DUs and change the setting as necessary.
The maximum number of DUs that can be designated as priority DU is 1 unit less than the specified value for [Number of Open Mics] (NOM ). No more DUs can be designated as a priority DU. · Change the setting value for the NOM or DU priority setting.
A recording function error occurs such as a recording error not due to recording operations via Web Remote. · Check that no error occurs during recording on the CU. If an error occurs,
solve the problem according to the error.
There is low remaining power in battery 1 in the IRDU with device ID XXX. · Replace battery 1.
There is no remaining power in battery 1 in the IRDU with device ID XXX. · Replace battery 1.
There is low remaining power in battery 2 in the IRDU with device ID XXX. · Replace battery 2.
There is no remaining power in battery 2 in the IRDU with device ID XXX. · Replace battery 2.
There is no response from IRDU with device ID XXX. · Refer to the installation manual to confirm that the installation environment
for the IRDU and IRA is correct, and then redo the previous operation.
An error occurred while booting the CU. (XXX indicate an error code.) · Restart the CU and check whether the same error occurs. If the same error
occurs again, the CU requires repair.
Since a communication error occu

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