TOA Electronics TS-900,TS-901,TS-902,TS-903,TS-904,TS-905,TS-907 Users Guide

Download

OPERATING INSTRUCTIONS

INFRARED CONFERENCE SYSTEM

TS-900 series

TS-900 TS-901/-903

TS-902/-903

TS-905/-907

Thank you for purchasing TOA's Infrared Conference System. Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.

TABLE OF CONTENTS

1. SAFETY PRECAUTIONS .............................................................................................. 4

2. GENERAL DESCRIPTION ............................................................................................ 7

3. FEATURES ........................................................................................................................ 7

4. SYSTEM EQUIPMENT CONFIGURATION ............................................................. 8

5. NOMENClATURE AND FUNCTIONS

5.1. Central Unit TS-900 ........................................................................................................ 9

5.2. Chairman Unit TS-901 .................................................................................................. 12

5.3. Delegate Unit TS-902 ................................................................................................... 15

6. OPERATION

6.1. Initiating Speech ............................................................................................................ 18

6.2. Initiating Priority Speech (TS-901 only) ......................................................................... 19

6.3. Voting ............................................................................................................................ 20

7. FUNCTION SETTINGS

7.1. Setting the Maximum Number of Simultaneous Speakers ............................................ 21

7.2. Speech Priority Settings

7.2.1. Mode A: first-in/first-out priority (factory-preset switch position) .......................... 21

7.2.2. Mode B: last-in/first-out priority ............................................................................ 21

7.2.3. Mode C: priority fixed for first-enabled unit, and last-in/first-out priority

for all subsequent units ....................................................................................... 22

7.3. Mic-Off Function ............................................................................................................ 22

8. MICROPHONE MIX/CUT SWITCH SETTINGS .................................................... 23

9. SYSTEM CONNECTION EXAMPLES .................................................................... 24

10. INFRARED SERVICE AREAS

10.1. Infrared Transmitter/Receiver ..................................................................................... 25

10.2. Chairman Unit and Delegate Unit ............................................................................... 26

11. INSTALLATION AND CONNECTIONS

11.1. Notes on Installation of the Infrared Transmitter/Receiver Unit .................................. 27

11.2. Infrared Transmitter/Receiver Unit Arrangement Examples ....................................... 28

11.3. Wiring between the Infrared Transmitter/Receiver Unit and the Central Unit

11.3.1. Notes on wiring ............................................................................................... 29

11.3.2. Distributor use ................................................................................................. 29

11.3.3. Wiring examples .............................................................................................. 29

11.4. Mounting the Infrared Transmitter/Receiver Unit

11.4.1. Ceiling mounting ............................................................................................. 31

11.4.2. Mounting on a microphone stand .................................................................... 32

11.5. Connections between the Infrared Transmitter/Receiver Unit and the Central Unit

11.5.1. Connecting ...................................................................................................... 33

11.5.2. Coaxial cable processing ................................................................................ 34

11.6. Using Wired Microphones and Sound Source Equipment

11.6.1. Wired microphone use .................................................................................... 39

11.6.2. Sound source equipment use ......................................................................... 39

11.7. Recording the Conference Contents ........................................................................... 40

12. CHAIRMAN AND DELEGATE UNIT INSTALLATION AND SETTINGS ...... 41

13. CHAIRMAN AND DELEGATE UNIT POWER SUPPLY

13.1. BP-900 Lithium-Ion Battery

13.1.1. Inserting the lithium-ion battery ....................................................................... 42

13.1.2. Recharging ...................................................................................................... 43

13.2. AD-0910 AC Adapter .................................................................................................. 44

14. CENTRAL UNIT RACK MOUNTING ....................................................................... 45

15. INSTALLATION STATUS CONFIRMATION .......................................................... 46

16. APPENDIX

16.1. Confirming the Wiring Design

16.1.1. Values necessary for calculating the loss ....................................................... 47

16.1.2. Values necessary for calculating the voltage drop .......................................... 47

16.2. Computational Equation

16.2.1.

Finding the wiring loss

..................................................................................... 48

16.2.2. Finding the wiring voltage drop ....................................................................... 48

16.3. Design Examples

16.3.1. Example 1: When installing 4 TS-905 Infrared Transmitter/Receiver units

using 4 coaxial cables reaching from the Central unit: ................ 49

16.3.2. Example 2: When installing 4 TS-905 Infrared Transmitter/Receiver units using 1 coaxial cable reaching from the Central unit

(one 4-branch distributor connected): .......................................... 50

16.3.3. Example 3: When installing each 4 TS-905 Infrared Transmitter/Receiver units using 4 coaxial cables reaching from the Central unit

(four 4-branch distributors connected): ........................................ 52

16.3.4. Example 4: When installing 16 TS-905 Infrared Transmitter/Receiver units using 1 coaxial cable reaching from the Central unit

(five 4-branch distributors connected): ........................................ 53

17. IF A FAILURE IS DETECTED

17.1. Chairman Unit TS-901 and Delegate Unit TS-902 ...................................................... 55

17.2. Central Unit TS-900 .................................................................................................... 56

17.3. Battery Charger BC-900 .............................................................................................. 56

18. SPECIFICATIONS

18.1. Central Unit TS-900 ................................................................................................... 57

18.2. Chairman Unit TS-901, Delegate Unit TS-902 ............................................................ 58

18.3. Microphone TS-903, TS-904 ...................................................................................... 58

18.4. Infrared Transmitter/Receiver TS-905, TS-907 ............................................................ 59

18.5. Lithium-Ion Battery BP-900 ........................................................................................ 59

18.6. Battery Charger BC-900 ............................................................................................. 60

18.7. AC Adapter AD-900 ................................................................................................... 60

18.8. Distributor YW-1022 (2-branch distributor), YW-1024 (4-branch distributor) .............. 61

18.9. Rack Mounting Bracket MB-TS900 ............................................................................ 61

1. SAFETY PRECAUTIONS

• Before installation or use, be sure to carefully read all the instructions in this section for correct and safe operation.

• Be sure to follow all the precautionary instructions in this section, which contain important warnings and/or cautions regarding safety.

• After reading, keep this manual handy for future reference.

Safety Symbol and Message Conventions

Safety symbols and messages described below are used in this manual to prevent bodily injury and property damage which could result from mishandling. Before operating your product, read this manual first and understand the safety symbols and messages so you are thoroughly aware of the potential safety hazards.

Indicates an imminently hazardous situation, which, if not avoided, will result in death or serious injury.

DANGER

• Should the following irregularity be found during use, immediately switch off the power, take the batteries out of the unit, and keep them away from fire. Failure to do so may cause a fire or explosion.

· If you find battery leakage, discoloration, deformation or damage.

· If you detect smoke or a strange smell coming out from the batteries.

• Do not deform, modify, nor solder the batteries. Dosing so may damage the battery's safety or protector mechanism, causing the batteries to fire, leak, or explode.

• Never short the positive and negative terminals with a wire or other metallic objects. Also, avoid carrying or keeping the batteries with metallic objects such as necklaces or hair pins. Doing so may cause the batteries to fire, explode, leak, or heat.

• Never heat the batteries nor throw them into a fire. Doing so may damage the battery's gas relief valve or safety mechanism, causing the batteries to fire or explode.

• Do not dip the batteries into water nor wet the battery terminals. This may corrode the batteries, possibly causing them to fire, explode, leak, or heat.

• Note correct polarity (positive and negative orientation) when inserting the batteries into a battery charger. Doing otherwise may cause them to fire, explode, leak, or heat.

• Do not use, keep, nor leave the batteries near fire or in locations where the temperature rises above 60°C such as in a sun-heated car. Dosing so may damage the battery's safety or protector mechanism, causing the batteries to fire, explode, leak, or heat.

• Be sure to use the BC-900 charger when recharging the batteries. Using other battery charger may cause them to fire, explode, leak, or heat.

• Use the batteries only with the equipment specified. Failure to do so may cause the batteries to fire, explode, leak, or heat.

• Do not drop the batteries nor give them a shock. Doing so may damage the battery's safety or protector mechanism, causing the batteries to fire, explode, leak, or heat.

• There is a fear of loosing one's eyesight if a battery leakage gets in one's eyes. Wash it away with clean water and consult a doctor immediately. If a battery leakage stains one's skin or clothes, wash it away with clean water as there is a fear of impairing the skin.

Applicable to Lithium-ion battery

When Installing the Unit

• Do not expose the unit to rain or an environment where it may be splashed by water or other liquids, as doing so may result in fire or electric shock.

• Use the unit only with the voltage specified on the unit. Using a voltage higher than that which is specified may result in fire or electric shock.

• Do not cut, kink, otherwise damage nor modify the power supply cord. In addition, avoid using the power cord in close proximity to heaters, and never place heavy objects -- including the unit itself -- on the power cord, as doing so may result in fire or electric shock.

• Avoid installing or mounting the unit in unstable locations, such as on a rickety table or a slanted surface. Doing so may result in the unit falling down and causing personal injury and/or property damage.

When the Unit is in Use

• Should the following irregularity be found during use, immediately switch off the power, disconnect the power supply plug from the AC outlet and contact your nearest TOA dealer. Make no further attempt to operate the unit in this condition as this may cause fire or electric shock.

· If you detect smoke or a strange smell coming from the unit.

· If water or any metallic object gets into the unit

· If the unit falls, or the unit case breaks

· If the power supply cord is damaged (exposure of the core, disconnection, etc.)

· If it is malfunctioning (no tone sounds.)

• To prevent a fire or electric shock, never open nor remove the unit case as there are high voltage components inside the unit. Refer all servicing to your nearest TOA dealer.

• Do not place cups, bowls, or other containers of liquid or metallic objects on top of the unit. If they accidentally spill into the unit, this may cause a fire or electric shock.

• Do not insert nor drop metallic objects or flammable materials inside the unit, as this may result in fire or electric shock.

• Do not touch a plug during thunder and lightning, as this may result in electric shock.

• Stop charging if the batteries are not fully charged within 5 hours. Continuously charging over 5 hours may cause the batteries to fire, explode, leak, or heat.

Applicable

to Battery charger and Lithium-ion battery

Applicable

to Central unit, Chairman unit, Delegate unit, Battery charger, and AC adapter

Applicable

to Central unit, Chairman unit, Delegate unit, Battery charger, and AC adapter

Indicates a potentially hazardous situation which, if mishandled, could result in death or serious personal injury.

WARNING

Indicates a potentially hazardous situation which, if mishandled, could result in moderate or minor personal injury, and/or property damage.

CAUTION

When Installing the Unit

• Be sure to follow the instructions below when rack-mounting the unit. Failure to do so may cause a fire or personal injury.

· Install the equipment rack on a stable, hard floor. Fix it with anchor bolts or take other arrangements to

prevent it from falling down.

· To rack-mount the unit, use the supplied rack mounting hardware.

· When connecting the unit's power cord to an AC outlet, use the AC outlet with current capacity allowable to

the unit.

• Never plug in nor remove the power supply plug with wet hands, as doing so may cause electric shock.

• When unplugging the power supply cord, be sure to grasp the power supply plug; never pull on the cord itself. Operating the unit with a damaged power supply cord may cause a fire or electric shock.

• When moving the unit, be sure to remove its power supply cord from the wall outlet. Moving the unit with the power cord connected to the outlet may cause damage to the power cord, resulting in fire or electric shock. When removing the power cord, be sure to hold its plug to pull.

• Do not block the ventilation slots on the unit. Doing so may cause heat to build up inside the unit and result in fire.

• Avoid installing the unit in humid or dusty locations, in locations exposed to the direct sunlight, near the heaters, or in locations generating sooty smoke or steam as doing otherwise may result in fire or electric shock.

When the Unit is in Use

• Do not place heavy objects on the unit as this may cause it to fall or break which may result in personal injury and/or property damage. In addition, the object itself may fall off and cause injury and/or damage.

• If dust accumulates on the power supply plug or in the wall AC outlet, a fire may result. Clean it periodically. In addition, insert the plug in the wall outlet securely.

• Switch off the power, and unplug the power supply plug from the AC outlet for safety purposes when cleaning or leaving the unit unused for 10 days or more. Doing otherwise may cause a fire or electric shock.

• Use the dedicated AC adapter for the unit. Note that the use of other adapter may cause a fire.

• Make sure that the volume control is set to minimum position before power is switched on. Loud noise produced at high volume when power is switched on can impair hearing.

• When the unit is not in use for 10 days or more, be sure to take the battery out of the unit because battery leakage may cause a fire, personal injury, or contamination of environment.

• Replace the battery only with the TOA BP-900. Using a battery other than designated may cause it to explode. When you discard batteries, please contact the local dealer from whom you bought.

Applicable to Chairman unit and Delegate unit

Applicable to Central unit

Applicable to Central unit, Chairman unit, Delegate unit, and Battery charger

Applicable to Central unit, Chairman unit, Delegate unit, Battery charger, and AC adapter

Applicable to Central unit

• Remove the power supply plug of charger from the AC outlet after charging completion, as doing otherwise may cause a fire.

• When you discard batteries, please contact the local dealer from whom you bought.

Applicable to Lithium-ion battery

Applicable to Battery charger

2. GENERAL DESCRIPTION

The TOA TS-900 Series is a cordless infrared conference system that can be installed and removed quickly and easily. Since the TS-901 Chairman unit and the TS-902 Delegate unit require no wiring, they permit easy installation based on a free layout. The Infrared Transmitter/Receiver unit and recording equipment are connected to the TS-900 Central unit, and the system function settings and status indications are performed at the Central unit.

3. FEATURES

• Since the system is cordless, it can be easily installed and removed, permitting flexible relocation and changes in system layout.

• The system's infrared communication method is not only resistant to radio interference and eavesdropping, but it also permits simultaneous use of systems in adjacent conference rooms with no crosstalk.

• The number of Chairman and Delegate units can be varied as required depending on the number of participants. Up to 96 Chairman and Delegate units can be used per system.

• The maximum number of Infrared Transmitter/Receiver units to be installed in a system is 16 when they are all TS-905 units and 12 when they are all TS-907 units. (Also 12 when both models are mixed.)

• A voting function offers three selections (Yes, No, and Abstention) for quick and efficient vote counting.

• A function to restrict the number of speakers minimizes disorder that could result from simultaneous communications by meeting participants.

• The speech system selection function permits operation when the unit's Talk key is pressed to be set to firstin-first-out, last-in-first-out, or other priority.

• The Mic-Off function automatically turns off the unit's microphone after 30 seconds, even if a user forgets to turn off the microphone after speech completion.

• While the Chairman or Delegate unit is in use, its built-in monitor speaker is turned off, preventing acoustic feedback*.

• The Central unit can be used in conjunction with wired microphones and output source equipment, depending on application.

• Since the Central unit can be connected to recording equipment, it is ideal for use in preparing conference minutes.

• The Chairman unit features a priority speech key which allows it to take precedence over Delegate units when speaking.

• Both Chairman and Delegate units are equipped with a monitor selector switch which permits monitoring of either the base or translated language.

• The dedicated microphone used by Chairman and Delegate units employs an XLR connector that not only permits easy attachment and detachment of the microphone, but also saves space when stored.

• Both Chairman and Delegate units can be operated on both their built-in rechargeable lithium-ion batteries or AC power supply.

• Two types of dedicated microphones are made available for the Chairman and Delegate units: "standard" and "long."

* Acoustic feedback: A squeal or howl from the speaker caused by an audio loop condition in which part of the

speaker output is picked up by the same microphone, and subsequently amplified and output from the speaker again, quickly building in intensity.

4. SYSTEM EQUIPMENT CONFIGURATION

Distributor YW-1024 (4-branch distributor) or YW-1022 (2-branch distributor)

Note

The maximum number of Infrared Transmitter/Receiver units to be installed TS-905 only: 16 TS-907 only: 12 (Also 12 when both models are mixed.)

Infrared transmitter/receiver TS-905 or TS-907

Central unit

TS-900

Chairman unit

TS-901

AC adapter

(supplied with the TS-900)

Microphone (standard) TS-903 or Microphone (long) TS-904

Delegate unit

TS-902

Power cord

(supplied with the TS-900)

AC adapter AD-0910

(for TS-901/902)

Lithium-ion battery BP-900

(for TS-901/902)

Battery charger BC-900

(for BP-900)

Rack mounting bracket MB-TS900

(for TS-900)

5. NOMENCLATURE AND FUNCTIONS

5.1. Central Unit TS-900

[Top]

1. Power switch

Setting this switch to the ON position causes the Power indicator to light.

2. Audio signal receiving indicators

[Ch1/Ch2/Ch3/Ch4]

Light up when audio signals are received from either Chairman or Delegate units. Audio signals are transmitted or received through 4 channels. The number of channels to be used can be set with the Simultaneous Speaker No. Setting switch (16). These indicators light in the same number as that of the Chairman or Delegate units currently being used for speech. (Which indicator will light is not specified.)

3. Data signal receiving indicator

Lights when control data is received from the Chairman or Delegate unit.

4. Battery indicator

Flashes when the lithium-ion battery of the Chairman or Delegate unit nears complete discharge. (In this event, the Microphone In-Use indicator and the Speech indicator on the corresponding unit also flash.)

Note

Be sure to replace the lithium-ion battery of the corresponding unit immediately if this indicator begins to flash.

5. External control communication indicator

Remains lit during communications with a computer (PC) or operation panel connected to the External Control terminal (29).

6. External control priority indicator

Either lights or flashes when a PC or operation panel connected to the External Control terminal (29) performs priority operation. In this event, three function setting switches (16), (17), and (18) cannot be used.

7. AUX 1 input volume control

Adjusts the input signal level of the AUX 1 Input Terminal (27) located on the rear panel. Speech input to the AUX 1 terminal is output to the base language channel*1.

8. AUX 2 input volume control

Adjusts the input signal level of the AUX 2 Input Terminal (25) located on the rear panel. Speech input to the AUX 2 terminal is output to the translation language channel*2.

9. AUX 3 input volume control

Adjusts the input signal level of the AUX 3 Input Terminal (24) located on the rear panel. Speech input to the AUX 3 terminal is output to both the base language*1and translation language*

channels.

2 3

POWER

CENTRAL UNIT TS-900

Ch4Ch3Ch2Ch1

BATTERYDATA

VOTING

START/END3

14 15 16 18 1917

11 12 13

5 6 7 8 9

FUNCTION SETTINGMIC UNIT

DATA–EXT–PRIORITY

PRIORITY

MIC

UNITMAX

124

ABC

A: FIRST B: LATEST C: FIRST: FIXED, NEXT: LATEST

TIME OUT

OFF

MAIN SUB MAIN+SUB

AUX1

100

MIC UNIT

MIX

CUT

MIC1

MIC UNIT INPUT

100

100100

AUX2

100

MIC UNIT

MIX

CUT

MIC2

100

HEADPHONES

MAIN SUB LINE

21 22

AUX3

100

10. Microphone Mix/Cut switch

(for the base language channel)

MIX: Speech input from the Chairman unit,

Delegate unit, and AUX 1 and MIC 1 terminals are output to the base language channel*

, and recording and line outputs.

CUT: Speech input from the Chairman and

Delegate units is not output to the base language channel*

. Speech input from the AUX 1 and MIC 1 terminals are not delivered to the recording and line outputs.

Note

This switch is factory-preset to the MIX position.

11. MIC 1 input volume control

Adjusts the input level of the MIC 1 Input Terminal (28) on the rear panel. Speech input to the MIC 1 terminal is output to the base language channel*

12. Microphone Mix/Cut switch (for the translation language channel)

MIX: Speech input from the Chairman unit and

Delegate unit are output to the translation language channel*

CUT: Speech input from the Chairman unit and

Delegate unit are not output to the translation language channel*

Note

This switch is factory-preset to the MIX position.

13. MIC 2 input volume control

Adjusts the input level of the MIC 2 Input Terminal (26) on the rear panel. Speech input to the MIC 2 terminal is output to the translation language channel*

14. Voting result display

Computes the number of votes cast by individual Chairman and Delegate units for categories 1 – 3 and displays the result after voting completion.

15. Voting start/end button

Holding down this button for 1 second or more permits the Central unit to accept voting. To terminate voting, hold down the button again for 1 second or more. If this button is held down for 1 second or more once again, the Voting Result Display (14) is turned off. (Refer to p. 20.)

This button is also used to confirm installation conditions for the Infrared Transmitter/Receiver unit, the Chairman unit, and the Delegate unit. (Refer to p. 46.)

16. Simultaneous speaker No. setting switch

Used to set the number of Chairman and Delegate units that can be simultaneously operated. The indications [1], [2], and [4] represent the number of simultaneously operable units. (Refer to p. 21.)

Note

This switch is factory-preset to the [1] position.

17. Speech priority selector switch

Determines the priority mode when the Talk key of the Chairman or Delegate unit is pressed. (Refer to p. 21.)

A: First-in-first-out priority B: Last-in-first-out priority C: Priority fixed for the first unit, and last-in-first-

out priority for all other subsequent units.

Note

This switch is factory-preset to the [A] position.

18. Mic-off setting switch

Automatically turns off Chairman or Delegate unit microphones 30 seconds after speech is completed if the user should neglect to turn off the microphone. (Refer to p. 22.)

Note

This switch is factory-preset to the OFF position.

19. Speech volume control

Adjusts the microphone volume of the Chairman unit and Delegate unit.

20. Headphone jack (Mini-jack)

Connects to a headphone.

21. Headphone channel selector switch

Used to choose the output to be monitored by a connected headphone from the following three sources: Base language (MAIN), Translation language (SUB), and Line (LINE) channels.

Note

This switch is factory-preset to the MAIN position.

22. Headphone volume control

Adjusts the sound volume of the headphone.

Base Language: Mixture of speech inputs from sound sources connected to the AUX 1 and

MIC 1 terminals, as well as those from the Chairman and Delegate units

Translation Language: Mixture of speech inputs from sound sources connected to the AUX2 and

MIC 2 terminals, as well as those from the Chairman and Delegate units.

[Bottom]

23. DC input

Connect the supplied AC adapter to this terminal.

24. AUX 3 input terminal

Connect a CD player, tape recorder, or other similar equipment to this terminal. Speech input connected to this terminal is relayed to both the base and translation language channels.

25. AUX 2 input terminal

Connect a CD player, tape recorder, or other similar equipment to this terminal. Speech input connected to this terminal is relayed to the translation language channel.

26. MIC 2 input terminal

Connect a wired microphone to this terminal. Speech input from the microphone connected to this terminal is relayed to the translation language channel.

27. AUX 1 input terminal

Connect a CD player, tape recorder, or other similar equipment to this terminal. Speech input connected to this terminal is relayed to the base language channel.

28. MIC 1 input terminal

Connect a wired microphone to this terminal. Speech input from the microphone connected to this terminal is relayed to the base language channel.

29. External control terminal

Connect this terminal to the serial port of a PC, operation panel, or other external control equipment.

30. Level volume control

Adjusts the line output volume.

31. Line output terminal

Connect an amplifier, etc. for public address applications. Speech input from the Chairman unit, Delegate unit, or MIC 1, AUX 1, or AUX 3 terminals is output to this terminal. The settings of Microphone Mix/Cut switch (10) and AUX 3

Output Mix/Cut switch (32) determine whether or not such speech input is output.

32. AUX 3 output Mix/Cut switch

Determines whether or not speech input is relayed from AUX 3 terminal to the line output. Set this switch to MIX in normal use, and to CUT to enable conference participants in other rooms to avoid potential audio feedback while speaking.

33. Recording output terminal

Connect an Alternate Recording Deck or MD recorder. An amplifier can also be connected for public address applications. The same speech signal as the line output and that of AUX 3 terminal are output to this terminal.

34. Priority chime volume control

Adjusts the output volume of the chime tone that sounds when the Priority Speech key on the Chairman unit is pressed.

35. Infrared transmitter/receiver unit I/O terminals

Connect the Infrared Transmitter/Receiver unit or distributor to this terminal. By using the YW-1022 (2-branch distributor) and/or YW-1024 (4-branch distributor), the following maximum number of Infrared Transmitter/Receiver units can be connected: 16 units when they are all TS-905 units, 12 units when they are all TS-907 units. (Also 12 units when both models are mixed.)

36. Short circuit indicator

Lights when the Infrared Transmitter/Receiver unit or its connected cable is shorted.

37. Cable clip

Run the AC adapter cable through this clip to prevent its plug from being removed from the DC input.

23 24 25 26 27 28 29 30 31 32 33 34

DC24V 3A(MAX)

SHORT

AUX2 MIC2 MIC1 EXT CONTROL LEVEL CHIME

AUX3

INFRARED TRANSMITTER/RECEIVER

353637

AUX1

MIX CUT

AUX3

LINE OUT REC OUT

Cable clip

To the DC input

AC adapter cable

5.2. Chairman Unit TS-901

[Top]

1. Monitor speaker

Speech input from other Chairman or Delegate units and the Central unit is output from this speaker. Use the right-side Monitor Volume Control (15) to adjust the volume. No sound is output from the speaker of the unit in use while speaking.

2. Microphone

Use either the TS-903 (Standard) or TS-904 (Long) dedicated microphone.

3. Microphone in-use indicator

Lights when the microphone is turned on (for speech) and flashes when the battery level is low.

4. Infrared emitter/detector

The device used to transmit and receive infrared communication signals is built inside this panel.

Note

Never place any object that could block infrared signal access to this part of the unit, as this would prevent the unit from transmitting or receiving its required infrared signal.

5. Voting keys

Use these keys to start, end, and cast voting. The voting status indicator is provided above each key.

6. Speech indicator

Remains lit while the microphone is in use (during speech). The indicator flashes when the unit is out of the communications service area.

7. Talk key

When this key is pressed, both the Microphone InUse indicator (3) and the Speech indicator (6) light, and the microphone turns on. Pressing this key again extinguishes both indicators and turns off the microphone.

8. Priority speech key

Press this key continuously while speaking. A chime tone sounds when the key is pressed. (The chime can be disabled using the Priority Chime Disable switch (12).) The microphone turns on and both the Microphone In-Use indicator (3) and the Speech indicator (6) remain lit as long as the key is held down, allowing the voice input from the unit to take precedence over other units. During this interval, other Delegate units cannot be used. While this key is held down, only the priority speech input is relayed to the Central unit's recording and line outputs.

9. Power indicator

Lights when the power is switched ON. This indicator also flashes when the battery level is low or the unit is outside the communications service area.

Note

No microphone is supplied with the TS-901 Chairman unit.

7 8 9

[Bottom]

10. Lithium-ion battery compartment

Install only a dedicated BP-900 Lithium-Ion Battery in this compartment.

11. Interrupted operation reset switch [5]

Following completion of a priority speech, this switch is used to reset the operating status of Chairman and Delegate units whose operations were interrupted by the depression of a Priority Speech key (8). Set the switch to RESTORE in order to resume the mode in operation prior to initiation of the priority speech, and to RESET when resumption is not desired.

Note

This switch is factory-preset to the RESET position.

12. Priority chime disable switch [6]

Disables the chime that sounds when the Priority Speech key is pressed. Set this switch to OFF when sound output is desired, and to ON when no sound is desired.

Note

This switch is factory-preset to the OFF position.

13. Voting activation switch [7]

Determines whether or not to start and terminate voting from the Chairman unit. Set the switch to ON to enable voting, or to OFF to disable voting.

Note

This switch is factory-preset to the OFF position.

14. Unit address number setting switch

Set the unit address number ([01] – [96]), taking care to ensure that the same number is not duplicated in the system. If the number [00] is assigned to a unit, the user of that unit cannot speak. However, the unit can be used for monitoring.

Note

This number is factory-preset to [00].

Remove the cover on the bottom side of the unit to expose its setting switches.

Note

The label describing the setting switches is shown in the following figure.

PRIORITY

1 2 3

RESET

OFF

RESTORE CHIME MUTE

ON VOTE

UNIT ID

[Right side]

15. Monitor volume control

Adjusts the output volume of the monitor speaker and headphone.

16. Monitor selector switch

Selects either Base Language or Translation Language for the source to be output to the monitor speaker and headphone.

17. Headphone jack

Connect a headphone to this jack (mini-jack). Connecting the headphone cuts off the output from the monitor speaker.

Note

A headphone jack is located on both the left and right side panels.

18. Power switch

Press this switch to switch on the power. To switch off the power, press this switch again.

[Left side]

19. DC inlet

Connect the dedicated AD-0910 AC Adapter to this terminal.

Note: No microphone is supplied with the TS-901 Chairman unit.

15 16

HEADPHONES

MAIN SUB

HEADPHONES

MAIN SUB

POWER

OFF

HEADPHONES

5.3. Delegate Unit TS-902

[Top]

1. Monitor speaker

Speech input from other Chairman or Delegate units and the Central unit is output from this speaker. Use the right-side Monitor Volume Control (11) to adjust the volume. No sound is output from the speaker of the unit in use while speaking.

2. Microphone

Use either the TS-903 (Standard) or TS-904 (Long) dedicated microphone.

3. Microphone in-use indicator

Lights when the microphone is turned on (for speech) and flashes when the battery level is low.

4. Infrared emitter/detector

The device used to transmit and receive infrared communication signals is built inside this panel.

Note

Never place any object that could block infrared signal access to this part of the unit, as this would prevent the unit from transmitting or receiving its required infrared signal.

5. Voting keys

Use these keys to start, end, and cast voting. The voting status indicator is provided above each key.

6. Speech indicator

Remains lit while the microphone is in use (during speech). The indicator flashes when the unit is out of the communications service area.

7. Talk key

8. Power indicator

Lights when the power is switched ON. This indicator also flashes when the battery level is low or the unit is outside the communications service area.

Note

No microphone is supplied with the TS-902 Delegate unit.

[Bottom]

9. Lithium-ion battery compartment

Install only a dedicated BP-900 Lithium-Ion Battery in this compartment.

10. Unit address number setting switch

Note

This number is factory-preset to [00].

Remove the cover on the bottom side of the unit to expose its setting switches.

Note

The label describing the setting switches is shown in the following figure.

UNIT ID

[Right side]

11. Monitor volume control

Adjusts the output volume of the monitor speaker and headphone.

12. Monitor selector switch

Selects either Base Language or Translation Language for the source to be output to the monitor speaker and headphone.

13. Headphone jack

Connect a headphone to this jack (mini-jack). Connecting the headphone cuts off the output from the monitor speaker.

Note

A headphone jack is located on both the left and right side panels.

14. Power switch

Press this switch to switch on the power. To switch off the power, press this switch again.

[Left side]

15. DC inlet

Connect the dedicated AD-0910 AC Adapter to this terminal.

Note: No microphone is supplied with the TS-902 Delegate unit.

11 12

HEADPHONES

MAIN SUB

HEADPHONES

MAIN SUB

POWER

OFF

HEADPHONES

6. OPERATION

6.1. Initiating Speech

Step 1. Press the Talk key on the Chairman or

Delegate unit. The Speech indicator and Microphone In-Use indicator light, placing the unit in speech mode. No sound is output from the monitor speaker while both indicators are continuously lit.

Note

The unit cannot be used for speech if the indicators do not light.

Step 2. Speak into the microphone.

Step 3. Press the Speech key again after

speech completion. The indicators extinguish, and sound can be output from the monitor speaker.

Note

When the user forgets to turn off the microphone, the Mic-Off function automatically turns off the microphone approximately 30 seconds after speech completion. (Refer to p. 22.)

Speech indicator

Microphone in-use indicator

The figure shows the TS-901.

6.2. Initiating Priority Speech (TS-901 only)

Step 1. Speak while holding down the Priority Speech

key. Both the Speech indicator and the Microphone In-Use indicator light, placing the unit in priority speech mode. No sound is output from the monitor speaker while both indicators are continuously lit. A chime tone* sounds at other units, preventing them from being used for speaking.

* The chime tone can be enabled or disabled

using the Priority Chime Disable switch located on the bottom side of the unit.

ON: No chime sounds. OFF: Chime sounds. (Factory-preset

position)

Note

When two or more Chairman units are used in a system, a priority speech currently in progress from one unit can be interrupted by pressing the Priority Speech key of another Chairman unit, allowing the latter unit to go through. (Last-in-first-out priority)

Step 2. Release the Priority Speech key after speech

completion. Both indicators extinguish, and sound can be output from the monitor speaker.

Note

After the priority speech is completed, the other interrupted unit resumes operation as predetermined by the setting of the Interrupted Operation Reset switch located on the bottom side of the unit.

RESTORE: Resumes the unit's mode prior to

being interrupted by the priority speech.

RESET: Resets all units currently being

used for speech (Factory-preset position). When an interrupted party wishes to continue to speak, the Speech key must again be pressed.

Note

The Chairman unit that initiated the priority speech automatically returns to its original mode following priority speech completion, regardless of its Operation Reset switch setting.

The Chairman unit features the function that allows its speech to take precedence over that of the Delegate unit. The Chairman unit's speech is prior to the AUX 1, AUX 2, AUX 3, MIC 1, and MIC 2 inputs.

Microphone in-use indicator

Speech indicator

Interrupted operation reset switch

Priority chime disable switch

(Inside of the cover)

1 2 3

RESET

OFF

PRIORITY RESTORE

CHIME MUTE ON

ON VOTE

TS-901

bottom side

6.3. Voting

Step 1. Place the system in voting mode.

On the Central unit, hold down the Voting Start/End button for 1 second or more. On the Chairman Unit, simultaneously press Voting keys [1] and [2] for 1 second or more.

The Voting Result display (1 – 3) on the Central unit, and the Voting Status indicators on the Chairman and Delegate units flash, enabling voting. (In this event, the Voting Result Display shows [-- -- 0].) Only a priority speech can be initiated by the Chairman unit during voting operation, and the currently used microphones of all other units are turned off.

Step 2. Vote.

Press the desired Voting key on the Chairman or Delegate unit, and the corresponding Voting Status indicator lights. (Other Voting Status indicators remain flashing.) Pressing another Voting key invalidates the previously pressed key, and makes the last pressed key valid. In this event, the Voting Result display on the Central unit shows the total number of units whose Voting key was pressed.

Step 3. Terminate voting.

Again hold down the Voting Start/End button on the Central unit for 1 second or more or alternatively the Chairman unit's Talk key. Voting operations from the Chairman and Delegate units are confirmed and Voting Status indicators [1] through [3] extinguish. The result of computed votes is displayed on Voting Result displays [1] through [3] on the Central unit.

Note

If voting operation was activated by the Central unit, this operation cannot be terminated by the Chairman unit. However, if it was activated by the Chairman unit, it can be terminated by the Central unit as well.

Step 4. Clear the Voting Result display.

Press the Voting Start/End button on the Central unit for 1 second or more once again. The display contents are cleared from the Central unit's Voting Result display.

Voting can be started and terminated from the Central unit or the Chairman unit. To perform this operation from the Chairman unit, set the Voting Activation switch to ON as shown in the figure. (This switch is factory-preset to the OFF position.)

Voting activation switch

(For the Central unit)

VOTING

321

START/END

Hold down this button for 1 second or more.

Voting result display

(inside of the cover)

1 2 3

RESET

OFF

(For the Chairman unit)

Flashes

PRIORITY RESTORE

CHIME MUTE ON

ON VOTE

TS-901

bottom surface

Voting status indicators

Hold down these keys for 1 second or more.

(Example)

Lights

(For the Chairman unit)

PRIORITY

Hold down this key for 1 second or more.

TALK

7. FUNCTION SETTINGS

7.1. Setting the Maximum Number of Simultaneous Speakers

Using the Simultaneous Speaker No. Setting switch on the TS-900 Central Unit, set the maximum total number of Chairman and Delegate units that can simultaneously initiate speech.

Set the switch to [1], [2], or [4] depending on the type of the conference. These numbers indicate the number of units that can simultaneously initiate speech. (This switch is factory-preset to the [1] position.)

Note

When the Talk key is pressed at a unit exceeding the set maximum number, the corresponding unit can only initiate speech as determined in the speech priority settings referred to in the next section.

7.2. Speech Priority Settings

Operation following the depression of the Talk key on a Chairman or Delegate unit, when the maximum number of speakers that can be simultaneously initiated is reached, can be selected with the Speech Priority Selector switch on the TS-900 Central unit.

7.2.1. Mode A: first-in/first-out priority (factory-preset switch position)

Speech is initiated on a first-come/first-served basis. When the maximum number of speakers is reached, subsequent speech requests cannot be accepted, even if the Talk key is pressed.

• Example showing the number of simultaneous speakers set to [2].

7.2.2. Mode B: last-in/first-out priority

When the maximum number of simultaneous speakers is reached, input from the most recent subsequent Talk key-enabled Chairman or Delegate unit takes precedence, thus rendering earlier enabled units inoperable.

• Example showing the number of simultaneous speakers set to [2].

FUNCTION SETTING

DATA–EXT–PRIORITY

MIC

UNITMAX

124

PRIORITY

ABC

A: FIRST B: LATEST C: FIRST: FIXED, NEXT: LATEST

TIME OUT

Simultaneous speaker No. setting switch

FUNCTION SETTING

DATA–EXT–PRIORITY

MIC

UNITMAX

124

PRIORITY

ABC

A: FIRST B: LATEST C: FIRST: FIXED, NEXT: LATEST

TIME OUT

OFF

Chairman or Delegate unit

[First unit]

Press the talk key.

First unit: Speech possible.

[Second unit]

TALK TALKTALK

Press the talk key.

First unit: Speech possible. Second unit: Speech possible.

[Third unit]

Press the talk key.

First unit: Speech possible. Second unit: Speech possible. Third unit: Speech not possible.

Speech priority selector switch

Chairman or Delegate unit

[First unit]

[Second unit]

[Third unit]

Press the talk key.

First unit: Speech possible.

TALK TALKTALK

Press the talk key.

First unit: Speech possible. Second unit: Speech possible.

Press the talk key.

First unit: Speech cancelled. Second unit: Speech possible. Third unit: Speech possible.

7.2.3. Mode C: priority fixed for first-enabled unit, and last-in/first-out priority for all subsequent units

The first-enabled Chairman or Delegate unit is given fixed speech priority until its Talk key is pressed again. All subsequent Talk key-enabled units are given last-in/first-out priority, as in Mode B.

• Example showing the number of simultaneous speakers set to [2].

7.3. Mic-Off Function

This function automatically turns off the microphone if the user neglects to turn it off following speech completion.

This function is enabled when the Mic-Off Setting switch on the TS-900 Central Unit is set to the ON position. The microphone automatically turns off if a duration of silence lasts for about 30 seconds. It is recommended that the Mic-Off switch be set to the OFF position when not specifically using this function. (The Mic-Off switch is factory-preset to the OFF position.)

Notes

• When the Mic-Off switch is set to the ON position, the

microphone automatically turns off if there is a silent interval of about 30 seconds, even though a speech may be in progress. In conferences, where long pauses during speeches can be experienced, set the switch to the OFF position.

• The Mic-Off function may not be operated correctly in high-

noise areas.

Chairman or Delegate unit

[First unit]

[Second unit]

TALK TALK TALKTALK

[Third unit]

[Fourth unit]

Press the talk key.

First unit: Speech possible.

Press the talk key.

First unit: Speech possible. Second unit: Speech possible.

Press the talk key.

First unit: Speech possible. Second unit: Speech cancelled. Third unit: Speech possible.

Press the talk key.

First unit: Speech possible. Second unit: Speech cancelled. Third unit: Speech cancelled. Fourth unit: Speech possible.

FUNCTION SETTING

DATA–EXT–PRIORITY

MIC

124

PRIORITY

UNITMAX

ABC

A: FIRST B: LATEST C: FIRST: FIXED, NEXT: LATEST

TIME OUT

OFF

Mic-off setting switch

8. MICROPHONE MIX/CUT SWITCH SETTINGS

Whether to output voice signals from Chairman or Delegate units to the base or translation language channel can be determined by setting the Microphone Mix/Cut switch on the TS-900 Central unit. Outputs for individual inputs (MIC 1 – 2, and AUX 1 – 3) to the Central Unit also change depending on the switch setting.

[Switch Setting Relationship of Input to Base/Translation Language Channel]

• Speech output from Chairman and Delegate units depends on the switch setting. When the MAIN switch is

set to the MIX position, speech is output to the base language channel. When the SUB switch is set to the MIX position, speech is output to the translation language channel.

• Inputs to the MIC 1 and AUX 1 terminals are output to the base language channel, except during priority

speech from the Chairman unit, regardless of the switch setting.

• Inputs to the MIC 2 and AUX 2 terminals are output to the translation language channel, except during

priority speech from the Chairman unit, regardless of the switch setting.

• Inputs to the AUX 3 terminal are always relayed to both the base and translation language channels

regardless of the switch setting.

[Input/Output Relationship to Switch Settings]

MAIN SUB MAIN+SUB

AUX1

AUX2

AUX3

MIC UNIT

MIX

MIC1

For the base language channel

100

CUT

100

MIX

100

MIC UNIT

CUT

MIC2

100

For the translation language channel

100

Microphone Mix/Cut switch

MAIN SUB

MIX MIX

MIX CUT

CUT MIX

CUT CUT

Input

Chairman/Delegate unit

MIC 1

AUX 1

MIC 2

AUX 2

AUX 3

Chairman/Delegate unit

MIC 1

AUX 1

MIC 2

AUX 2

AUX 3

Chairman/Delegate unit

MIC 1

AUX 1

MIC 2

AUX 2

AUX 3

Chairman/Delegate unit

MIC 1

AUX 1

MIC 2

AUX 2

AUX 3

Monitor speaker on the Chairman/Delegate unit Headphone* on the Central unit

Base language

Translation language

Output

Central unit

Line output Headphone*

Recording output

: Indicates that individual inputs are output. : Indicates that individual inputs are not output. : Indicates that output can be determined by the setting of the AUX 3 Output Mix/Cut switch (located on the TS-900's rear panel).

Select output from MAIN (base language), SUB (translation language), and LINE (line output) sources using the Headphone

Channel Selector switch.

9. SYSTEM CONNECTION EXAMPLES

For the translation language channel

For the base language and translation language channels

AC adapter (supplied with the TS-900)

Power cord (supplied with the TS-900)

DC24V 3A(MAX)

SHORT

Central unit TS-900

AUX2 MIC2 MIC1 EXT CONTROL LEVEL CHIME

AUX3

INFRARED TRANSMITTER/RECEIVER

AUX1

MIX CUT

AUX3

LINE OUT REC OUT

For the base language channel

Cassette player

Alternate recording deck

Distributor YW-1024 (4-branch distributor) or YW-1022 (2-branch distributor)

Infrared transmitter/receiver TS-905 or TS-907

For details of the installation and connection of the Infrared Transmitter/Receiver unit, please refer to p. 27 "11. INSTALLATION AND CONNECTIONS."

Chairman unit TS-901 or Delegate unit TS-902

Headphone

Distributor block diagram

[YW-1022] [YW-1024]

Loss of 4.5dB

Mixing

Distributor

Loss of 4.5dB

Distribution 1

Impossible

Distribution 2

Mixing

Loss of 8.5dB

Distribution 1 Distribution 2 Distribution 3

Distributor

Distribution 4

Loss of 8.5dB

SpeakerAmplifier

Impossible Impossible Impossible

To avoid an increase in loss, do not perform connections

Note:

between distribution terminals.

10. INFRARED SERVICE AREAS

10.1. Infrared Transmitter/Receiver

Notes

• Infrared signals cannot reach the Infrared Transmitter/Receiver unit if it is hidden behind the user or other

objects. Install multiple Transmitter/Receiver units in line-of-sight from all Chairman and Delegate units.

• Install the Infrared Transmitter/Receiver units in such a way that each Chairman and Delegate unit can

always communicate with two or more Transmitter/Receiver units. If installed in such a way that communication is only established with one Transmitter/Receiver unit, the infrared signal may be blocked by persons or other objects, possibly causing a momentary loss of signal reception.

Model Ceiling height Radius of communication area

2.5 m Approx. 7.0 m

3.0 m

TS-905 3.5 m

Approx. 6.5 m

4.0 m

4.5 m

5.0 m

5.5 m Approx. 6.0 m

TS-907 6.0 m

6.5 m

7.0 m

• TS-905

• TS-907

Ceiling height

2.5 – 4.5 m

Ceiling height

5 – 7 m

150°

Radius of communication area

90°

Radius of

communication area

10.2. Chairman Unit and Delegate Unit

120°

15°

90°

15°

11. INSTALLATION AND CONNECTIONS

11.1. Notes on Installation of the Infrared Transmitter/Receiver Unit

Installing the Infrared Transmitter/Receiver unit in locations exposed to sunlight or in proximity to such infrared sources as fluorescent lights could result in system failures or the introduction of noise into the system. Avoid installing the Infrared Transmitter/Receiver unit in close proximity to infrared sources, as instructed below:

[Avoid direct sunlight]

• Cover windows with curtains or blinds to shield the unit from direct exposure to sunlight.

• Install the unit at lease 2 – 3 meters away from the nearest window.

[Keep away from fluorescent lights]

Position the unit at least 50 cm away from fluorescent lights.

[Keep away other infrared light sources]

• Lighting equipment

• LCD projectors, overhead projectors, incandescent lamps, etc.

• Mercury-arc lamps

• Plasma displays

• Remote controllers, infrared microphones, infrared equipment such as infrared LANs.

• Dimmers

2 – 3 m

Sunlight

Ceiling

Fluorescent lights

50 cm or more 50 cm or more

11.2. Infrared Transmitter/Receiver Unit Arrangement Examples

The area range that an Infrared Transmitter/Receiver unit covers differs depending on the height from the Chairman/Delegate units to the ceiling. (Refer to p. 25.)

Arrange the Infrared Transmitter/Receiver units so that all Chairman and Delegate units are included in the service area.

Note

The maximum number of Infrared Transmitter/Receiver units to be installed is 16 when they are all TS-905 units and 12 when they are all TS-907 units. (Also 12 when both models are mixed.)

[Conference room measuring 30 x 30 meters]

Arranging the units at intervals as illustrated permits the service area to cover every corner of the room.

Note

Determine which to use TS-905 or TS-907 depending on the ceiling height.

[Conference room using round tables]

All Chairman and Delegate units are arranged around the table, in which case only one Infrared Transmitter/Receiver unit may suffice for complete coverage of conference communications. However, it is highly recommended that two or more Transmitter/Receiver units be installed in order to avoid accidental interruptions of communications.

Communication area that each unit covers

Infrared transmitter/receiver

6 m6 m 9 m9 m

6 m

Infrared transmitter/receiver

10 – 15 m

6 m9 m 9 m

Communication area that the unit covers

10 – 15 m

11.3. Wiring between the Infrared Transmitter/Receiver Unit and the Central Unit

11.3.1. Notes on wiring

When two or more Infrared Transmitter/Receiver units receive infrared signals from the Chairman and Delegate units, the signal reception level increases if input signals to each Transmitter/Receiver unit are in phase. If not in phase, the signal reception level may decrease.

• To put signals in phase, ensure that the following cable length between two components are identical.

Length between each Infrared Transmitter/Receiver unit and the Central unit

: L + M0 + N0 = M1 + N0 = N1

Note: This length must always be the same even if a distributor is included in the wiring.

Length between Infrared Transmitter/Receiver unit and distributor: L Length between distributors (where two distributors are connected): M0 Length between distributor and Central unit: N0

(In the above figure, since there is only one N0 connection, the length need not be matched for the N0 line.)

• The maximum cable length between each Infrared Transmitter/Receiver unit and the Central unit differs depending on the type of coaxial cable to be used. (Refer to p. 47.) Take care not to exceed the maximum cable length.

11.3.2. Distributor use

• The YW-1022 is a 2-branch distributor, and the YW-1024 is a 4-branch distributor. In the case of the YW1024, its distribution terminals may become idle depending on the Infrared Transmitter/Receiver unit's wiring. However, this presents no problem.

• Avoid connecting more than 2 distributors in series. Connecting 3 or more distributors increases highfrequency signal loss, and could result in system malfunction.

• It is possible to mix Infrared Transmitter/Receiver units not connected to any distributor, those connected to 1 distributor, and those connected to 2 distributors in the same system.

11.3.3. Wiring examples

[Example 1]

All cables for "N" must be identical in length when the Infrared Transmitter/Receiver unit and the Central unit are installed in the same space.

Infrared transmitter/receiver Distributor

L L

Central unit

L L

N0 N1

Infrared transmitter/receiver

Central unit

When installing in the same space,

• All "L" cables must be identical in length

• All "M" cables must be identical in length.

Note

To facilitate the unification of coaxial cables used in different connections into the same length, it is highly recommended that wiring from the Central unit to the distributor mounted in a ceiling be performed with a single cable. For other ceiling wiring, using pre-cut coaxial cables of a slightly longer length will facilitate making all connections the same length.

[Example 2]

[Example 3]

When installing in multiple rooms where the light is shut off, coaxial cables used in different rooms need not be matched to the same length.

• All L0 cables are the same length.

• All L1 cables are the same length.

• All M0 cables are the same length.

• L0 and L1 cables need not be the same, since they are used in different rooms.

• M0 and M1 cables need not be the same length, since they are used in different rooms.

Note

The above condition also applies to cases in which two conference systems, both including the Chairman and Delegate units, are apart from each other in the same room so that communications cannot be made between the two systems.

Infrared transmitter/receiver Distributor

L L

Central unit

L L

Conference room A

L1 L1

Distributor

L1 L1

Central unit

Conference room B

L0 L0

Infrared transmitter/receiver

L0 L0

11.4. Mounting the Infrared Transmitter/Receiver Unit

11.4.1. Ceiling mounting

Step 1. Make a 68 mm diameter hole in the ceiling.

Step 2. Attach the supplied mounting plate to the ceiling panel.

Notes

• Since the distance between two mounting screw holes is 83.5 mm, the plate can also be mounted over an electrical box.

• For open wiring, use of an electrical box is recommended.

• When attaching the plate to an electrical box, use an L-shaped BNC plug or L-shaped conversion

connector.

Step 3. After wiring completion, mount the Infrared Transmitter/Receiver unit to the mounting plate.

With the unit's tabs (3 places) aligned with each corresponding notch in the mounting plate, rotate the Infrared Transmitter/Receiver unit clockwise till it stops and fits into place.

83.5 mm ø68 ±5 mm

Coaxial cable

Tabs (3 places)

Infrared transmitter/receiver TS-905/-907

Rotate to fix.

Mounting plate (supplied with the TS-905/-907)

Notes

•

The screws supplied with the TS-905 and TS907 are used for mounting it to the microphone stand. (Refer to the next page.)

•

Mounting screws for ceiling or wall are not supplied with the unit. Prepare them separately.

Mounting screw

11.4.2. Mounting on a microphone stand

Step 1. Attach the supplied stand mounting frame to the microphone stand.

Applicable thread size is W 5/16. When the stand's thread size is W 5/8, mount the supplied thread adapter onto the microphone stand.

Step 2. Fix the supplied mounting plate to the stand mounting frame.

Use the two supplied M3 x 6 screws for mounting.

Step 3. Attach the Infrared Transmitter/Receiver unit to the mounting plate.

Align the unit's tabs (3 places) with the corresponding notches in the plate, and then rotate the unit clockwise until it stops and fits into place.

Step 4. Mount an anti-drop screw to the mounting plate.

Note: The screw tip enters a hole in the unit and prevents its rotation.

Step 5. Perform wiring.

Anti-drop screws M3 x 6 (supplied with the TS-905/-907)

Stand mounting frame

Coaxial cable

(supplied with the TS-905/-907)

Infrared transmitter/receiver

TS-905/-907

Tabs (3 places)

W5/16 – W5/8 thread adapter (supplied with the TS-905*/-907)

Mounting plate (supplied with the TS-905/-907)

Microphone stand (applicable thread size: W5/16)

Rotate to fix.

Mounting screws M3 x 6 (supplied with the TS-905/-907)

Microphone stand (applicable thread size: W5/8)

* Not supplied with the TS-905 CE version.

11.5.

Connections between the Infrared Transmitter/Receiver Unit and the Central Unit

11.5.1. Connecting

Notes

• It is recommended that the 3C-FB, 5C-FB, or 7C-FB coaxial cable be used.

• Since the Infrared Transmitter/Receiver unit is equipped with the Live Status indicator, it is possible to

confirm whether or not the coaxial cable is correctly connected. (The indicator cannot be used for confirmation of the unit's minimum operating voltage.) When the indicator does not light, it can be considered that the coaxial cable is not connected or shorted.

• The Central unit has a Short Circuit indicator on its rear panel and the Central unit's short circuit protection circuit is common to all 4 BNC terminals. If this short circuit indicator lights, locate the shorted point by removing each distributed cord. The indicator also lights when the number of Infrared Transmitter/Receiver units connected in the system exceeds the allowable limit.

Use the coaxial cable with a BNC connector to connect the Infrared Transmitter/Receiver unit to the Central unit.

Coaxial cable

Central unit TS-900 (rear panel)

Live status indicator

MIX CUT

AUX3

LINE OUT REC OUT

Infrared transmitter/receiver

DC24V 3A(MAX)

SHORT

AUX3

AUX2 MIC2 MIC1 EXT CONTROL LEVEL CHIME

AUX1

INFRARED TRANSMITTER/RECEIVER

TS-905/-907

Short circuit indicator

11.5.2. Coaxial cable processing

Note: Purchase both the coaxial cable and the required BNC plugs separately.

Follow the procedure below to attach the BNC connector to the coaxial cable:

Attaching a YA-641 or CC-4901 BNC Plug to the 3C-FB Cable

Step 1. Strip the jacket 10 mm from the end of the

coaxial cable.

Step 2. Slip the tube supplied with the BNC plug over the

jacket.

Step 3. Unravel the braided shield and turn it back, then

peel away the aluminum cladding.

Step 4. Strip the dielectric 4 mm from the cable end.

Step 5. Disassemble the BNC plug as shown in the

figure at right and turn the screw on the plug so that it loosens partially but remains in position.

Step 6. Insert the coaxial cable into the clamping fixture.

Step 7. Insert the clamping fixture assembly into the

plug.

Step 8. Tighten the screw and then clamp the plug by

tightening the clamping fixture.

Coaxial cable Applicable BNC plug

3C-FB and 5C-FB YA-641 (1 piece per package), CC-4900 (10 pieces per package),

and CC-4901 (10 pieces per package)

7C-FB YA-642 (1 piece per package)

10 mm

Dielectric

Clamping fixture

Braided shield

Tube

Aluminum cladding

Conductor

4 mm

Screw

Plug

Clamping fixture

Screw

Plug

Screw

PlugClamping fixture

(Finished)

Attaching a CC-4900 BNC Plug to the 3C-FB Cable

Step 1. Strip the jacket 10 mm from the end of the

coaxial cable.

Step 2. Slip the tube supplied with the BNC plug over the

jacket.

Step 3. Unravel the braided shield and turn it back, then

peel away the aluminum cladding.

Step 4. Strip the dielectric 4 mm from the cable end.

Step 5. Disassemble the BNC plug as shown in the

figure at right.

Step 6. Insert the coaxial cable into the clamping fixture.

Step 7. Insert the clamping fixture assembly into the plug

and then solder the conductor.

Step 8. Insert the plug into the BNC connector.

Step 9. Clamp the connector by tightening the clamping

fixture.

Braided shield

10 mm

Tube

Aluminum cladding

Dielectric

Conductor

4 mm

Clamping fixture Plug BNC connector

Clamping fixture

Conductor

Solder.

BNC connector

BNC connectorClamping fixture

(Finished)

Attaching a YA-641 or CC-4901 BNC Plug to the 5C-FB Cable

Step 1. Strip the jacket 10 mm from the end of the

coaxial cable.

Step 2. Unravel the braided shield and turn it back, then

peel away the aluminum cladding.

Step 3. Strip the dielectric 4 mm from the cable end.

Step 4. Disassemble the BNC plug as shown in the

figure at right and turn the screw on the plug so that it loosens partially but remains in position.

Step 5. Insert the coaxial cable into the clamping fixture.

Step 6. Insert the clamping fixture assembly into the

plug.

Step 7. Tighten the screw and then clamp the plug by

tightening the clamping fixture.

10 mm

Dielectric

Clamping fixture

Braided shield

Aluminum cladding

Conductor

4 mm

Screw

Plug

Clamping fixture

Screw

Clamping fixture

Plug

(Finished)

Attaching a CC-4900 BNC Plug to the 5C-FB Cable

Step 1. Strip the jacket 10 mm from the end of the

coaxial cable.

Step 2. Unravel the braided shield and turn it back, then

peel away the aluminum cladding.

Step 3. Strip the dielectric 4 mm from the cable end.

Step 4. Disassemble the BNC plug as shown in the

figure at right.

Step 5. Insert the coaxial cable into the clamping fixture.

Step 6. Insert the clamping fixture assembly into the plug

and then solder the conductor.

Step 7. Insert the plug into the BNC connector.

Step 8. Clamp the connector by tightening the clamping

fixture.

10 mm

Dielectric

Clamping fixture

Braided shield

Aluminum cladding

Conductor

4 mm

Plug

BNC connector

Conductor

Solder.

BNC connector

BNC connectorClamping fixture

(Finished)

Attaching a YA-642 BNC Plug to the 7C-FB Cable

Step 1. Disassemble the BNC plug as shown in the

figure at right.

Step 2. Strip the jacket 15 mm from the end of the

coaxial cable.

Step 3. Insert the coaxial cable into the open ring.

Step 4. Unravel the braided shield and turn it back, then

peel away the aluminum cladding.

Step 5. Strip the dielectric 5 mm from the cable end.

Step 6. Insert the coaxial cable into the clamping

fixture.

Step 7. Attach the clamping ring to the plug.

Step 8. Insert the clamping fixture assembly into the

plug.

Step 9. Solder the conductor to the plug.

Step 10. Clamp the plug by tightening the clamping

fixture.

Clamping fixture

Open ring Clamping

Braided shield

15 mm

Open ring

Aluminum cladding

Dielectric

Conductor

5 mm

Plug

ring

Clamping fixture

PlugClamping ring

Solder.Clamping fixture

(Finished)

11.6. Using Wired Microphones and Sound Source Equipment

11.6.1. Wired microphone use

Connect a wired microphone to the Central unit's MIC input and adjust its volume with the corresponding MIC input volume control.

11.6.2. Sound source equipment use

Connect sound source equipment to the Central unit's AUX input and adjust its volume with the corresponding AUX input volume control.

MIC 1 or MIC 2 input volume control

MIC1

100

Central unit TS-900

MIC2

100

Wired microphone

(Top panel)

POWER

CENTRAL UNIT TS-900

Ch4Ch3Ch2Ch1

BATTERYDATA

VOTING

FUNCTION SETTINGMIC UNIT

DATA–EXT–PRIORITY

PRIORITY

MIC

UNITMAX

ABC

124

A: FIRST B: LATEST C: FIRST: FIXED, NEXT: LATEST

START/END3

TIME OUT

OFF

MAIN SUB MAIN+SUB

AUX1

100

MIC UNIT

MIX

CUT

MIC1

100

MIC UNIT INPUT

100100

AUX2

100

MIC UNIT

MIX

MIC2

100

HEADPHONES

MAIN SUB LINE

AUX3

100

CUT

(Rear panel)

DC24V 3A(MAX)

SHORT

MIC 1 or MIC 2 input terminal

AUX3

AUX2 MIC2 MIC1 EXT CONTROL LEVEL CHIME

AUX1

INFRARED TRANSMITTER/RECEIVER

MIX CUT

AUX3

LINE OUT REC OUT

Central unit TS-900 (Top panel)

CENTRAL UNIT TS-900

Ch4Ch3Ch2Ch1

BATTERYDATA

POWER

VOTING

START/END3

FUNCTION SETTINGMIC UNIT

DATA–EXT–PRIORITY

MIC

UNITMAX

124

A: FIRST B: LATEST C: FIRST: FIXED, NEXT: LATEST

PRIORITY

ABC

TIME OUT

OFF

AUX 1, AUX 2, or AUX 3 input volume control

MAIN SUB MAIN+SUB

AUX1

100

MIC UNIT

MIX

CUT

MIC1

100

MIC UNIT INPUT

100100

AUX2

100

MIC UNIT

MIX

MIC2

100

HEADPHONES

MAIN SUB LINE

AUX1

CUT

100

AUX3

100

AUX2

100

(Rear panel)

DC24V 3A(MAX)

SHORT

AUX3

100

Sound source

equipment

Line output

AUX 1, AUX 2, or AUX 3 input terminal

AUX2 MIC2 MIC1 EXT CONTROL LEVEL CHIME

AUX3

INFRARED TRANSMITTER/RECEIVER

AUX1

MIX CUT

AUX3

LINE OUT REC OUT

11.7. Recording the Conference Contents

Connect the recorder's recording input terminal to the Central unit's recording output terminal. If the recorder has its recording level control, adjust it to an appropriate recording level.

Note: For operation of the recorder, refer to the instruction manual included with the recorder.

Alternate recording deck

(Front panel)

Headphone

Monitor output

Central unit TS-900 (Rear panel)

Recording output (REC OUT)

DC24V 3A(MAX)

SHORT

AUX2 MIC2 MIC1 EXT CONTROL LEVEL CHIME

AUX3

INFRARED TRANSMITTER/RECEIVER

AUX1

MIX CUT

AUX3

LINE OUT REC OUT

Recorder

Recording input

(Rear panel)

Connection of the recorder using RCA plugs.

12. CHAIRMAN AND DELEGATE UNIT INSTALLATION AND SETTINGS

Step 1. Set the unit address numbers for the

Chairman and Delegate units to be used. To perform this setting, rotate the rotary DIP switches located on the bottom side of the unit with a screwdriver. Set for numbers [01] – [96] so that the same number is not duplicated. Setting [00] prohibits the unit from being used for speech. To use the unit only for monitoring purposes, set the address number to [00]. (These switches are factory-preset to [00].)

Step 2. Mount the microphone to the Chairman

or Delegate unit.

Step 3. Set the Interrupted Operation Reset, Priority Chime Disable, and Voting Activation functions using the

in-line DIP switch located on the bottom side of the Chairman unit.

Step 4. Turn on the same number of microphones on the Chairman and Delegate units as the maximum

number of simultaneous speakers set at the Central unit. Speaking into the microphone, adjust the Central unit's Speech volume control to an appropriate level.

Step 5. Initiate speech from the microphones of all Chairman and Delegate units, and confirm that acoustic

feedback is not produced. If feedback occurs, widen the distance between the Chairman unit and the Delegate unit or reduce the output volume to prevent feedback.

(Inside of the cover)

Tens digit

Units digit

UNIT ID

Microphone (standard) TS-903

Microphone (long) TS-904

Chairman or Delegate unit

Bottom side

Chairman unit TS-901 or Delegate unit TS-902

Chairman unit

(bottom side)

(Inside of the cover)

Interrupted operation reset switch

Priority chime disable switch

Voting activation switch

RESET

OFF

1 2 3

PRIORITY RESTORE

CHIME MUTE ON

ON VOTE

13. CHAIRMAN AND DELEGATE UNIT POWER SUPPLY

Use either the optional BP-900 Lithium-Ion Battery or the AD-0910 AC Adapter for the power supply of the Chairman and Delegate units.

13.1. BP-900 Lithium-Ion Battery

13.1.1. Inserting the lithium-ion battery

Note: A fully charged battery can be continuously used for about 10 hours.

Lithium-ion battery BP-900

Arrow

Chairman unit TS-901 or Delegate unit TS-902 (bottom side)

Slide the battery in the direction

indicated by the arrow until it stops and fits into place.

Align the battery slots (4 places) with the corresponding tabs located on the unit's underside, and insert the battery into the battery compartment.

Lithium-ion battery compartment

Reverse the above procedures to remove the battery.

13.1.2. Recharging

Use the BC-900 Battery Charger to recharge the BP-900 Lithium-Ion Battery.

Step 1. Connect the power cord to the supplied AC adapter.

Step 2. Connect the AC adapter to the Charger's power input terminal.

Step 3. Insert the AC plug into the AC wall outlet.

Step 4. Turn on the power switch.

The Power indicator lights green.

Step 5. Insert the battery fully into one of the Charger's battery receptacles with the battery oriented to the

proper direction. Ensure that the charging status indicator lights red. If it does not light, check to see if the battery is correctly inserted.

Charging is completed within 5 hours and the charging status indicator lights green.

Note

Switching the Charger's power OFF and back ON again with fully-charged (charging completed) batteries inserted will result in repeated recharge of the batteries. Battery life could deteriorate from this repetitive charging.

Stop charging if batteries are not fully charged within 5 hours. Continuously charging over 5 hours may cause batteries to fire, explode, leak, or heat.

WARNING

Remove the power supply plug of charger from the AC outlet after charging completion, as doing otherwise may cause a fire.

CAUTION

BP-900 Lithium-Ion Battery

Charging status indicator (Red/green)

Power cord (supplied with the BC-900)

Power switch

Power input terminal

BC-900 Battery Charger

AC adapter (supplied with the BC-900)

13.2. AD-0910 AC Adapter

Connect the AD-0910 AC Adapter to the DC Inlet located on the left side panel of the Chairman and Delegate units.

TS-901/902

Power cord

(supplied with the AD-0910)

DC inlet

AC adapter

AD-0910

14. CENTRAL UNIT RACK MOUNTING

Step 1. Detach both side panels of the TS-900 Central Unit.

Removed screws are used in Step 2.

Step 2. Attach the MB-TS900 Rack Mounting Bracket to both sides of the Central Unit.

Use the screws removed in Step 1.

Step 3. Mount the Central unit equipped with the mounting brackets in the rack.

Use the rack mounting screws and fiber washers supplied with the rack mounting bracket.

Side panel

Screws removed in Step 1 (6 screws)

Fiber washers (supplied with the MB-TS900)

Rack mounting screws 5 x 12 (supplied with the MB-TS900)

Note

Supplied 5 x 12 rack mounting screws are designed specifically for TOA's equipment rack. Avoid using them for other rack mounting.

15. INSTALLATION STATUS CONFIRMATION

Installation status for the Infrared Transmitter/Receiver unit, Chairman unit, and Delegate units can be checked from the Central unit. Switch on the power to the Chairman and Delegate units to confirm their installation status after completing installation and connection.

Note

None of the unit's functions can be used while in installation status confirmation mode, except Priority Speech initiated from the Chairman unit.

Step 1. Switch on the power to the Central unit while

holding down its Voting Start/End button. The Central unit's Battery indicator lights, placing the unit in installation confirmation mode.

1-1. Each segment (1 – 3) of The Central unit's Voting

Result display shows [00] and flashes.

1-2. When a connection check signal is output from the

Central unit, the microphone indicator on the Chairman or Delegate unit that has received the signal flashes.

1-3. An acknowledgement signal is transmitted from

each Chairman or Delegate unit.

1-4. A response confirmation signal is output from the

Central unit that has received the acknowledgement signal, and the microphone indicator on the Chairman or Delegate unit that has received the signal changes from flashing to steady ON.

1-5. Each segment (1 – 3) of the Voting Result display

provides a flashing indication of [the number of installed Chairman units], [the number of installed Delegate units], and [the total number of installed Chairman and Delegate units], respectively.

Step 2. Press the Voting Start/End button for 1 second or

more after confirming the indication. The Central unit's Battery indicator and Voting Result display (1 – 3) turn off. The microphone indicators on the Chairman and Delegate units also extinguish, and the installation status confirmation mode is terminated, returning the system to normal operation mode.

POWER

Lights

BATTERYDATA

Flashes

Battery indicator

VOTING

START/END3

Voting result display

Flashes Lights

POWER

Number of installed Chairman units

Number of installed Delegate units

POWER

BATTERYDATA

VOTING

321

START/END3

Total number of installed Chairman and Delegate units

Extinguished

BATTERYDATA

VOTING

Extinguished

START/END3

16. APPENDIX

(Finding the maximum cable length between the Central Unit and the Infrared Transmitter/Receiver Unit)

Values calculated here are given only as guidelines, since they can vary depending on ambient building conditions and the Infrared Transmitter/Receiver unit.

16.1. Confirming the Wiring Design

To obtain the maximum cable length between the Infrared Transmitter/Receiver unit and the Central unit, calculate the cable length on the following each condition. The shorter length of the two results is the required extendable length.

Values necessary for each calculation are as follows.

16.1.1. Values necessary for calculating the loss

(1) 2-branch distributor (YW-1022) loss: 4.5 dB

(2) 4-branch distributor (YW-1024) loss: 8.5 dB

(3) Coaxial cable loss per 100 m (table shown below)

Note: The values in the table above are losses at 10 MHz.

16.1.2. Values necessary for calculating the voltage drop

(1) Operating current per Infrared Transmitter/Receiver unit: 0.1 A (TS-905), 0.13 A (TS-907)

(2) Distributor resistance loss: 0 Ω

(3) Coaxial cable loop resistance per 100 m (table shown below)

Note: The values in the table above are losses at 10 MHz.

Note: Coaxial cable loss and loop resistance values used here are based on our investigation.

(1) Maximum allowable wiring loss: 20 dB (Total cable and distributor loss)

(2) Maximum allowable DC voltage drop: 5 V

RG-59/U 16.82 Ω

RG-6/U 12.82 Ω

RG-11/U 2.4 Ω

RG-59/U 3.3 dB

RG-6/U 2.7 dB

RG-11/U 2.0 dB

16.2.1. Finding the wiring loss

Requirement: Total loss 20 dB

Cable loss = (Length / 100) x Loss per 100 m

Total loss = Cable 1 loss + Cable 2 loss + Cable 3 loss + Distributor 1 loss + Distributor 2 loss

16.2.2. Finding the wiring voltage drop

Requirement: Total voltage drop 5 V

Cable voltage drop = (Length / 100) x Loop resistance per 100 m x Current

Cable current =

Number of the connected Infrared Transmitter/Receiver units x 0.1 (TS-905) or 0.13 (TS-907)

Total voltage drop = Voltage drop 1 + Voltage drop 2 + Voltage drop 3

Note: For the coaxial cable required to carry a large current, use a cable of low loop resistance type.

16.2. Computational Equation

[Finding the cable current]

Cable current = Number of the connected Infrared Transmitter/Receiver units x 0.1 (TS-905) or 0.13 (TS-907)

The cable current changes when the Distributor is used, as shown below.

Central Unit

Coaxial cable 1

Coaxial cable 1 loss

Distributor 1

Distributor 2

Coaxial cable 2

Coaxial cable 2 loss

Central unit

Coaxial cable 1

Distributor

Coaxial cable 2

Transmitter/Receiver

Coaxial cable 3

Coaxial cable 3 loss

Transmitter/Receiver

Coaxial cable 3

unit

Current 1

Voltage drop 1

Current 2

Voltage drop 2

Current 3

Voltage drop 3

Infrared

Central unit

0.1 A

Infrared Transmitter/Receiver unit TS-905

Central unit

Distributor1

0.1 A

0.2 A

0.1 A

Transmitter/Receiver units TS-905

16.3. Design Examples

16.3.1. Example 1: When installing 4 TS-905 Infrared Transmitter/Receiver units using 4 coaxial cables

reaching from the Central unit:

1) Finding the maximum cable length using maximum allowable cable losses

Assuming that the type of coaxial cable used is RG-59/U,

Maximum cable length L = (Coaxial cable loss / its cable loss per 100 m )

= (20 dB / 3.3 dB) x 100 m = 606 m

The following table shows the maximum allowable cable length for each type of coaxial cable.

2) Finding the maximum cable length using voltage drop

Since one TS-905 Infrared Transmitter/Receiver unit is connected per coaxial cable, the current that flows through each coaxial cable is 0.1 A.

Assuming that the type of coaxial cable used is RG-59/U,

Maximum length L = { (Voltage drop 1 / Current 1) / Coaxial cable loop resistance 1 for 100 m }

= { (5 V / 0.1 A) / 16.82 Ω } x 100 m = 297 m

The following table shows the maximum allowable cable length for each type of coaxial cable.

The table below shows the required maximum cable length for the example 1, the shorter length of the calculation results (1) and (2) above.

RG-59/U 297 m

RG-6/U 390 m

RG-11/U 2083 m

RG-59/U 297 m

RG-6/U 390 m

RG-11/U 1000 m

RG-59/U 606 m

RG-6/U 740 m

RG-11/U 1000 m

Central unit

Infrared Transmitter/Receiver units

TS-905

Condition: Cable length between the Distributor and the TS-905 Infrared Transmitter/Receiver unit is

assumed to be 50 meters.

16.3.2. Example 2: When installing 4 TS-905 Infrared Transmitter/Receiver units using 1 coaxial cable

reaching from the Central unit (one 4-branch distributor connected):

1) Finding the maximum cable length using maximum allowable cable losses

Assuming that RG-59/U coaxial cable is used between the Distributor and the Infrared Transmitter/Receiver unit, the cable loss between the two is calculated by the following equation:

Cable loss = 3.3 dB x (50 m / 100 m) = 1.65 dB

Since the Distributor's internal loss is 8.5 dB, the maximum allowable loss between the Central unit and the Distributor becomes 9.85 dB (20 dB – 1.65 dB – 8.5 dB).

When RG-6/U coaxial cable is used between the Central unit and the Distributor, the length L1 between the two is,

L1 = (Coaxial cable loss / its cable loss per 100 m )

= (9.85 dB / 2.7 dB) x 100 m = 364 m

Maximum cable length L between the Central unit and the Infrared Transmitter/Receiver unit is calculated by the following equation:

L = L1 + 50 m

= 364 m + 50 m = 414 m

Similarly calculated for other types of coaxial cables, the maximum cable length between the Central unit and the Infrared Transmitter/Receiver unit is found in the following table.

RG-59/U 348 m

RG-6/U 414 m

RG-11/U 542 m

Infrared Transmitter/Receiver units

Central unit

Distributor

TS-905

50 m

2) Finding the maximum cable length using voltage drop

The current flowing from the Distributor into each coaxial cable connected to the TS-905 Infrared Transmitter/Receiver unit is 0.1 A, since the number of Infrared Transmitter/Receiver units connected to each coaxial cable is 1.

Assuming that RG-59/U coaxial cable is used, the voltage drop between the Distributor and the Infrared Transmitter/Receiver unit is calculated by the following equation:

Voltage drop = 16.82 Ω x (50 m / 100 m) x 0.1 A

= 0.841 V

A remaining voltage of 4.159 V (5 V – 0.841 V) is the maximum allowable voltage drop between the Central unit and the Distributor. The current that flows between the two is 0.4 A.

When RG-6/U coaxial cable is used between the Central unit and the Distributor, the cable length L1 between the two is,

L1 = { (Voltage drop 1 / Current 1) / Coaxial cable loop resistance 1 per 100 m }

= { (4.159 V / 0.4 A) / 12.82 Ω } x 100 m = 81 m

Maximum cable length L between the Central unit and the Infrared Transmitter/Receiver unit is calculated by the following equation:

L = L1 + 50 m

= 81 m + 50 m = 131 m

Similarly calculated for other types of coaxial cables, the maximum cable length between the Central unit and the Infrared Transmitter/Receiver unit is found in the following table.

The table below shows the required maximum cable length for the example 2, the shorter length of the calculation results (1) and (2) above.

RG-59/U 111 m

RG-6/U 131 m

RG-11/U 483 m

RG-59/U 111 m

RG-6/U 131 m

RG-11/U 483 m

Condition: Cable length between the Distributor and the TS-905 Infrared Transmitter/Receiver unit is

assumed to be 50 meters.

16.3.3. Example 3: When installing each 4 TS-905 Infrared Transmitter/Receiver units using 4 coaxial

cables reaching from the Central unit (four 4-branch distributors connected):

The equation and maximum cable length in this example are the same as those in Example 2 in the previous section on p. 50.

Infrared Transmitter/Receiver units

TS-905Distributor

Central unit

50 m

Condition: Length between the Distributor 2 and the TS-905 Infrared Transmitter/Receiver unit is assumed to

be 50 meters, and the length between Distributor 1 and Distributor 2 10 meters.

16.3.4. Example 4: When installing 16 TS-905 Infrared Transmitter/Receiver units using 1 coaxial cable

reaching from the Central unit (five 4-branch distributors connected):

1) Finding the maximum length using maximum allowable cable losses

Assuming that RG-59/U coaxial cable is used, the cable loss between the Distributor 2 and the Infrared Transmitter/Receiver unit is calculated by the following equation:

Cable loss = 3.3 dB x (50 m / 100 m) = 1.65 dB

Assuming that RG-6/U coaxial cable is used, the cable loss between the Distributor 1 and Distributor 2 is calculated by the following equation:

Cable loss = 2.7 dB x (10 m / 100 m) = 0.27 dB

Because of the 2 serially-connected 4-branch distributors, their loss is 17 dB (8.5 dB + 8.5 dB), which is added to the above cable loss, causing a total loss of 18.92 dB (1.65 dB + 0.27 dB + 17 dB). Therefore, the maximum allowable cable loss between the Central unit and the Distributor 1 is calculated to be 1.08 dB (20 dB – 18.92 dB).

• Assuming that RG-11/U coaxial cable is used, L1 between the Central unit and the Distributor 1 is calculated by the following equation:

L1 = (Coaxial cable loss / its cable loss per 100 m)

= (1.08 dB / 2 dB) x 100 m = 54 m

Maximum cable length L (Length between the Central unit and the Infrared Transmitter/Receiver unit) = 54 m + 10 m + 50 m = 114 m

• Assuming that RG-6/U coaxial cable is used, L1 between the Central unit and the Distributor 1 is calculated by the following equation:

L1 = (Coaxial cable loss / its cable loss per 100 m)

= (1.08 dB / 2.7 dB) x 100 m

= 40 m Maximum cable length L (Length between the Central unit and the Infrared Transmitter/Receiver unit) = 40 m + 10 m + 50 m = 100 m

Similarly calculated for other types of coaxial cables, the maximum cable length between the Central unit and the Infrared Transmitter/Receiver unit is found in the table.

RG-59/U 92 m

RG-6/U 100 m

RG-11/U 114 m

Infrared Transmitter/Receiver units

TS-905Distributor 2

Distributor 1Central unit

50 m10 m

2) Finding the maximum cable length using voltage drop

The current flowing from the Distributor 2 into each coaxial cable connected to the TS-905 Infrared Transmitter/Receiver unit is 0.1 A, since the number of Infrared Transmitter/Receiver units connected to each coaxial cable is 1.

Assuming that RG-59/U coaxial cable is used, the voltage drop between the Distributor 2 and the Infrared Transmitter/Receiver unit is calculated by the following equation:

Voltage drop = 16.82 Ω x (50 m / 100 m) x 0.1 A

= 0.841 V

When RG-6/U type coaxial cable is used, since the current flowing into each coaxial cable between Distributor 1 and Distributor 2 is 0.4 A, the voltage drop between the two is calculated by the following equation:

Voltage drop 2 = 12.82 Ω x (10 m / 100 m) x 0.4 A

= 0.513 V

Voltage drop 1 + Voltage drop 2 = 1.354 V

A remaining voltage of 3.646 V (5 V – 1.354 V) is the maximum allowable voltage drop between the Central unit and the Distributor 1. The current that flows between the two is 1.6 A.

• Assuming that RG-11/U coaxial cable is used, L1 between the Central unit and the Distributor 1 is calculated by the following equation:

L1 = { (Voltage drop 1 / Current 1) / Coaxial cable loop resistance 1 per 100 m }

= { (3.646 V / 1.6 A) / 2.4 Ω } x 100 m = 94 m

Maxim cable length L (Length between the Central unit and the Infrared Transmitter/Receiver unit) = 94 m + 10 m + 50 m = 154 m

• Assuming that RG-6/U coaxial cable is used, L1 between the Central unit and the Distributor 1 is calculated by the following equation:

L1 = { (Voltage drop 1 / Current 1) / Coaxial cable loop resistance 1 per 100 m }

= { (3.646 V / 1.6 A) / 12.82 Ω } x 100 m = 17 m

Maxim cable length L (Length between the Central unit and the Infrared Transmitter/Receiver unit) = 17 m + 10 m + 50 m = 77 m

Similarly calculated for other types of coaxial cables, the maximum cable length between the Central unit and the Infrared Transmitter/Receiver unit is found in the following table.

The table below shows the required maximum cable length for the example 4, the shorter length of the calculation results (1) and (2) above.

RG-59/U 73 m

RG-6/U 77 m

RG-11/U 154 m

RG-59/U 73 m

RG-6/U 77 m

RG-11/U 114 m

17. IF A FAILURE IS DETECTED

17.1. Chairman Unit TS-901 and Delegate Unit TS-902

Symptom

Cannot turn ON power.

Cause and Points to Check

(When using the lithium-ion battery) Battery not charged.

Remedy

Batteries are not charged as shipped from the factory. Be sure to fully charge the battery before use. (Refer to p. 43.)

No sound output from the speaker or headphone.

Monitor volume control not correctly adjusted.

Adjust the volume to an appropriate level.

Cannot operate the Talk key.

Infrared Emitter/Detector exposed to direct sunlight or spotlight.

Reposition in a location not exposed to direct light. (Refer to p. 27.)

Are the Infrared Transmitter/Receiver units and Chairman/Delegate units positioned to permit their infrared emitter/detector sections to be in sight of each other?

Are the TS-905 or TS-907 Infrared Transmitter/Receiver units correctly selected to match the ceiling height and installed so that all the Chairman/Delegate units are in the communications service area?

(If both the Power and Speech indicators simultaneously flash, this indicates the unit is out of the communications service area.)

Install all the units so that they are in clear view of each other, and select and install the Infrared/ Transmitter/Receiver units correctly for the ceiling height. (Refer to p. 25.)

Monitor Selector switch not correctly set.

Set the switch to the position where sound can be heard.

Central unit's Microphone Mix/Cut switch not correctly set.

Headphone plug not fully inserted. Insert the headphone plug fully into the

jack.

Unit address numbers outside range of 01 – 96.

Set the unit address number within the range of 01 – 96. (Refer to p. 41.)

Cable between the Infrared Transmitter/Receiver unit and the Central Unit not connected.

Connect the cable.

Priority speech is in progress. Operate the key after the priority

speech is completed.

(When using the AC adapter) Power cord or DC input plug not connected.

Connect the power cord (supplied with the AC adapter) and the DC input plug correctly. (Refer to p. 44.)

Cannot initiate speech. Is the Central Unit's rear panel-

mounted Short Circuit indicator illuminated?

Check the cable connected to the Central Unit's Infrared Transmitter/Receiver unit I/O terminals.

Does the Live Status indicator on the Infrared Transmitter/Receiver unit remain dark?

Power indicator (green) does not light even if the power switch is turned ON.

Charging status indicator (red) does not light even if the lithium-ion battery is inserted into its receptacle.

Short battery recharge duration.

AC plug is not inserted into the wall AC outlet.

Insert the AC plug to the wall AC outlet.

Is the lithium-ion battery correctly inserted into its receptacle?

Insert the lithium ion battery fully into its receptacle.

Deterioration of the lithium-ion battery.

Replace with a brand-new BP-900 Lithium-Ion Battery.

Charging terminals are dirty. Wipe the terminals with a dry cotton

swab to clean them.

Symptom Cause and Points to Check Remedy

Fuse has blown. The fuse must be replaced.

For replacement, consult your TOA dealer.

Symptom

Chime does not sound when the Priority Speech key is pressed.

Cause and Points to Check

Central unit's rear panel-mounted Priority Chime volume control is set to the minimum volume position.

Remedy

Adjust the volume control to an appropriate level.

Battery can be used only for a short period of time.

Not fully charged. Charging is completed within 5 hours.

Note: Fully charged batteries can be

used for up to 10 hours. (Refer to p. 42.)

Battery is approaching the end of its life.

Use a brand-new battery.

Note: Battery can be recharged almost

300 times.

Mic-Off function does not work.

High background noise level generated by such equipment as air conditioners.

In areas where the background noise level is high, the Mic-Off function may not work. Reposition in a low-noise location or turn off the Mic-Off function.

Symptom

Cannot switch ON the power.

Cause and Points to Check

Power cord or DC plug not connected.

Remedy

Correctly connect the power cord and DC plug supplied with the Central unit. (Refer to p. 24.)

17.2. Central Unit TS-900

17.3. Battery Charger BC-900

Indicator on the microphone extinguishes during speech.

Mic-Off function set to ON. Disable the Mic-Off function if a long

pause is made during speech.

Microphone indicator flashes.

Battery voltage has dropped below a marginal level.

Replace the battery with a fully charged one.

Power Source 100 – 240 V AC, 50/60 Hz (supplied from the accessory AC adapter)

Power Consumption 72 W

Input MIC 1 (Base Language): –60 dB*, 600 Ω, unbalanced, phone jack

MIC 2 (Translation Language): –60 dB*, 600 Ω, unbalanced, phone jack AUX 1 (Base Language): –20 dB*, 10 kΩ, unbalanced, phone jack AUX 2 (Translation Language): –20 dB*, 10 kΩ, unbalanced, phone jack AUX 3 (Bass and Translation Language):

–20 dB*, 10 kΩ, unbalanced, phone jack

Output LINE OUT: –20 dB*, 10 kΩ, unbalanced, phone jack

REC OUT: –20 dB*, 10 kΩ, unbalanced, phone jack, RCA pin jack HEADPHONES: Mini jack

Number of Connectable 96 units Chairman/Delegate Units

Number of Connectable 4 units Infrared Transmitter/Receiver (By using 4 Distributors, up to 16 units when only the TS-905 units are used, Units up to 12 units when only the TS-907 units are used or when both models are

mixed.)

Infrared Transmitter/Receiver 4 BNC jacks I/O Terminal

External Control Terminal D-sub connector (9 P, male)

LED Indicator Voting result indicators 1 – 3 (7-segment LED, double-digit number),

Audio signal receiving indicators 1 – 4 CH, Data signal receiving indicator, External control priority indicator, External control communication indicator, Power indicator, Battery indicator (flashes when a Chairman/Delegate unit's battery nears complete discharge)

Function Switch Simultaneous speaker No. setting switch: 1/2/4

Mic-off setting switch: TIME OUT ON/OFF Speech priority selector switch: A: First-in-first-out priority,

B: Last-in-first-out priority, C: Fixed for the first unit, and last-in-first-

out for the subsequent units

Microphone Mix/Cut Switch Mix: Chairman/Delegate units + MIC 1 + AUX 1 + AUX 3 (for the Base Language) Base Language

Cut: MIC 1 + AUX 1 + AUX 3 Base Language

Microphone Mix/Cut Switch Mix: Chairman/Delegate units + MIC 2 + AUX 2 + AUX 3 (for the Translation Language)

Translation Language

Cut: MIC 2 + AUX 2 + AUX 3 Translation Language

AUX 3 Mixing Select Switch Mix: AUX 3 input is relayed to the line output.

Cut: AUX 3 input is not relayed to the line output.

Operating Temperature 0°C to 40°C

Finish Panel: Surface-treated steel plate, gray metallic, paint, semi-gloss

Dimensions 359 (w) x 118.8 (h) x 179.8 (d) mm

Weight 2.8 kg

18.1. Central Unit TS-900

18. SPECIFICATIONS

* 0 dB = 1 V

Note: The design and specifications are subject to change without notice for improvement.

• Accessories

AC adapter (Cord length: 1.8 m DC cord, and 2 m detachable AC cord) ............... 1

TS-903 TS-904

Electret condenser microphone

Undirectional

1.8 kΩ

–37 dB (1 kHz, 0 dB = 1 V/Pa)

Speech (lighting) / low battery (flashing) indicator (ring type)

100 – 13,000 Hz

XLR-4-32 type

Gooseneck: Stainless steel, black Other: ABS resin, black

368 mm 518 mm

90 g 105 g

Chairman unit: TS-901, Delegate unit: TS-902

Power Source 7.4 V DC (battery), 9 V DC (AC adapter)

(supplied from BP-900 battery or AD-0910 AC adapter)

Current Consumption Max. 270 mA

Wavelength 870 nm (AM: Brightness modulation)

Modulation Method Frequency modulation

Carrier Frequency Transmission: Audio channel 1: 7.35 MHz

Audio channel 2: 8.10 MHz Audio channel 3: 8.55 MHz Audio channel 4: 9.15 MHz Control channel: 6.45 MHz

Reception: Base language channel: 1.95 MHz

Translation language channel: 2.25 MHz

Acceptance Angle Vertical: 90°, Horizontal: 120°

Emission Angle Vertical: 90°, Horizontal: 120°

Input Microphone terminal: XLR-4-31 type

(For connecting the optional TS-903 or TS-904)

Output Monitor speaker: 8 Ω, 0.2 W

Headphone: Mini jack x 2

LED Indicator Speech indicator (flashes when the unit is out of communications range),

Voting status indicators 1 – 3, Power indicator (flashes when the unit is out of communications range or when the battery level is low)

Battery Life Approx. 10 hours (when the fully-charged BP-900 battery is used with

"During speech" to "Standby" ratio of 1:2)

Operating Temperature 0°C to 40°C

Finish Top Panel: ABS resin, gray metallic, paint, semi-gloss

Dimensions 210 (w) x 65.9 (h) x 152 (d) mm

Weight 640 g

18.2. Chairman Unit TS-901, Delegate Unit TS-902

18.3. Microphone (standard) TS-903, Microphone (long) TS-904

Infrared Emitter/Detector

Note: The design and specifications are subject to change without notice for improvement.

Model No.

Type

Directivity

Rated Impedance

Rated Sensitivity

LED Indicator

Frequency Response

Output Connector

Finish

Length

Weight

Applicable Unit (Option)

Model No. TS-905 TS-907

Power Source 24 V DC (supplied from the optional TS-900)

Current Consumption Max. 150 mA Max. 180 mA

Wavelength 870 nm (AM: Brightness modulation)

Modulation Method Frequency modulation

Carrier Frequency Transmission: Audio channel 1: 7.35 MHz

Audio channel 2: 8.10 MHz Audio channel 3: 8.55 MHz Audio channel 4: 9.15 MHz Control channel: 6.45 MHz

Reception: Base language channel: 1.95 MHz

Translation language channel: 2.25 MHz

Acceptance Angle

Vertical: 150° (75°+75°), Horizontal: 360° Vertical: 90° (45°+45°), Horizontal: 360°

Emission Angle

Vertical: 150° (75°+75°), Horizontal: 360° Vertical: 90° (45°+45°), Horizontal: 360°

Communication Area Approx. 6 – 7 m in radius from the Approx. 6 m in radius from the

point underneath the unit point underneath the unit (ceiling height: 2.5 – 4.5 m) (ceiling height: 5 – 7 m)

Connection Terminal BNC jack

LED Indicator Power

Operating Temperature 0°C to 40°C

Finish Dome: PC resin, visible light cut filter

Base: ABS resin, black

Dimensions ø120 x 71.3 (h) mm

Weight 230 g (unit only)

Infrared Emitter/Detector

Nominal Voltage 7.4 V DC

Nominal Capacity 1700 mAh

Operating Temperature 0°C to 40°C

Dimensions 71.6 (w) x 20.4 (h) x 37.6 (d) mm

Weight 95 g

Note: The design and specifications are subject to change without notice for improvement.

18.4. Infrared Transmitter/Receiver TS-905, TS-907

18.5. Lithium-Ion Battery BP-900

• Accessories

Mounting bracket ........................................................................... 1

Stand mounting bracket ................................................................. 1

Screw M3 x 6 ................................................................................. 3

W5/16 – W5/8 thread adapter (except for TS-905 CE version) ..... 1

Note: The design and specifications are subject to change without notice for improvement.

• Accessories

Terminal protection cover (pre-installed at the factory) ............ 1

Power Source 100 – 240 V AC, 50/60 Hz

Current Consumption Max. 5 A

Charging Time Approx. 5 hours

Charging Capacity 8 BP-900 batteries (optional)

LED Indicator Charging status (Green: Full charge, Red: On charge), Power indicator

Operating Temperature 0°C to 40°C

Finish Case: Steel, black, paint

Battery receptacles: PPO resin, black

Dimensions 240 (w) x 70 (h) x 115 (d) mm

Weight Unit: 1.1 kg, AC adapter: 520 g

18.6. Battery Charger BC-900

Note: The design and specifications are subject to change without notice for improvement.

• Accessories

AC adapter (Cord length: 1.5 m DC cord, and 2 m detachable AC cord) .......... 1

Power Source 100 – 240 V AC, 50/60 Hz

Output 9 V DC, 1 A

Ripple Voltage 100 mV (p-p)

Current Consumption 100 mA AC (Input 230 V)

Cord Length 1.8 m

Plug RC6705, center "+"

Operating Temperature 0°C to 40°C

Finish Case: PC/ABS alloy, black

Dimensions 47.4 (w) x 33 (h) x 86.5 (d) mm (excluding a power cord)

Weight 190 g

18.7. AC Adapter AD-0910

Note: The design and specifications are subject to change without notice for improvement.

• Accessories

AC power cord (2 m) .......................................................................................... 1

Finish Surface-treated steel plate, gray metallic, paint, semi-gloss

Dimensions 65.5 (w) x 177 (h) x 61 (d) mm

Weight 680 g

18.9. Rack Mounting Bracket MB-TS900

Note: The design and specifications are subject to change without notice for improvement.

• Accessories

Rack mounting screw 5 x 12 ........................... 4

Rack mounting washer (for M5) ...................... 4

• Accessories

Wood screw 4.1 x 25 (for fixing the unit) ......... 2

YW-1022 YW-1024

1 Mixing / 2 Distribution 1 Mixing / 4 Distribution

1.6 – 1,000 MHz (excluding 50 – 70 MHz)

4.5 dB ±3 dB 8.5 dB ±3 dB

(between the Mixing and each (between the Mixing and each

Distribution terminal) Distribution terminal)

75 Ω

Mixing terminal: BNC jack, power passing type (under 30 V DC, under 2 A) Distribution terminals: BNC jack, power passing type (under 30 V DC, under 1 A)

–10 to +50°C

ABS resin, gray

75 (w) x 122 (h) x 34 (d) mm

105 g 120 g

18.8. Distributor YW-1022 (2-branch distributor), YW-1024 (4-branch distributor)

Note: The design and specifications are subject to change without notice for improvement.

Model No.

Number of I/O terminals

Frequency Range

Distribution Loss

Input/Output Impedance

Coaxial Connector

Operating Temperature

Finish

Dimensions

Weight

Printed in Japan 133-12-894-1E

TOA Electronics TS-900,TS-901,TS-902,TS-903,TS-904,TS-905,TS-907 Users Guide

Specifications and Main Features

Frequently Asked Questions

User Manual