Toa TS-910 Series User manual

INSTRUCTION MANUAL
CONFERENCE SYSTEM TS-910 SERIES
POWER
TALK
PRIORITY
POWER
TALK
Central unit
Expansion unit
Bridge unit
(1-Conference unit
connection type) Bridge unit
(4-Conference unit
connection type)
Delegate unit Chairman unit
Thank you for purchasing TOA's Conference System.
Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.

2
TABLE OF CONTENTS
1. SAFETY PRECAUTIONS ............................................................................. 4
2. GENERAL DESCRIPTION .......................................................................... 6
3. FEATURES ............................................................................................................ 6
4. SYSTEM EQUIPMENT CONFIGURATION ....................................... 7
5. NOMENCLATURE AND FUNCTIONS ................................................. 8
5.1. Central Unit TS-910 .............................................................................................. 8
5.2. Chairman Units TS-911 and TS-811 ................................................................... 12
5.3. Delegate Units TS-912 and TS-812 .................................................................... 16
5.4. Expansion Unit TS-918 ....................................................................................... 19
5.5. Bridge Unit (4-Conference unit connection type) TS-919B4 .............................. 20
5.6. Bridge Unit (1-Conference unit connection type) TS-919B1 ............................... 20
6. SYSTEM CONNECTION EXAMPLES ................................................ 21
7. CONFERENCE UNIT CONNECTION ................................................. 22
7.1. Central Unit and Expansion Unit Connection ...................................................... 22
7.2. Expansion unit, Bridge Unit, and Conference Unit Connections ........................ 24
7.3. Wiring .................................................................................................................. 27
8. USING WIRED MICROPHONES AND
SOUND SOURCE EQUIPMENT ............................................................ 28
8.1. Wired microphone use ........................................................................................ 28
8.2. Sound source equipment use ............................................................................. 29
9. RECORDING EQUIPMENT CONNECTION ................................... 29
10. CONFERENCE UNIT INSTALLATION AND SETTINGS ..... 30
11. RACK MOUNTING ....................................................................................... 31
11.1. Mounting the Central Unit on a Rack ................................................................. 31
11.2. Mounting the Expansion Unit on a Rack ........................................................... 32
12. INSTALLATION STATUS CONFIRMATION ................................. 33
13. SIGNAL FLOW DIAGRAM INSIDE THE CENTRAL UNIT ..... 34
14. FUNCTION SETTINGS ............................................................................. 35
14.1. Setting the Maximum Number of Simultaneous Speakers ................................ 35
14.2. Speech Priority Settings ................................................................................... 35
14.3. Mic-Off Function ............................................................................................... 36
15. MICROPHONE MIX/CUT SWITCH SETTINGS ......................... 37
16. OPERATION .................................................................................................... 38
16.1. Initiating Speech ................................................................................................ 38
16.2. Initiating Priority Speech (TS-911 and TS-811 only) ......................................... 39
16.3. Voting (TS-911 and TS-912 only) ...................................................................... 41

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17. IF ACOUSTIC FEEDBACK OCCURS .............................................. 42
17.1. Using the Built-in FBS function .......................................................................... 42
17.2. Using an External Graphic Equalizer ................................................................ 43
18. IF A FAILURE IS DETECTED ............................................................... 44
18.1. Chairman Unit TS-911/811 and Delegate Unit TS-912/812 ................................ 44
18.2. Central Unit TS-910 .......................................................................................... 45
19. SPECIFICATIONS ........................................................................................ 46
19.1. Central Unit TS-910 ........................................................................................... 46
19.2. Chairman Unit TS-911, Delegate Unit TS-912 ................................................. 47
19.3. Chairman Unit TS-811, Delegate Unit TS-812 .................................................. 48
19.4. Microphone (standard) TS-903, Microphone (long) TS-904 ............................. 48
19.5. Expansion Unit TS-918 ..................................................................................... 49
19.6. Bridge Unit TS-919B1, TS-919B4 ...................................................................... 49
19.7. Distributor YW-1022 (2-branch distributor), YW-1024 (4-branch distributor) ..... 50
19.8. Rack Mounting Bracket MB-TS900 ................................................................... 50
19.9. Half Width Blank Panel MB-15B-BK .................................................................. 50
19.10. Rack Joint Bracket MB-15B-J .......................................................................... 51

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Applicable to Central unit and Expansion unit
• 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.
• Do not touch a plug during thunder and lightning, as this may result in electric shock.
Applicable to Central unit, Conference unit, and Expansion 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.
• 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.
• 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.
Applicable to Central unit and Conference unit
• To prevent possible hearing damage, do not listen at high volume levels for long periods.
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 rst and
understand the safety symbols and messages so you are thoroughly aware of the potential safety hazards.
Indicates a potentially hazardous situation which, if mishandled, could
result in death or serious personal injury.
WARNING

5
• These servicing instructions are for use by qualified personnel only.
To reduce the risk of electric shock, do not perform any servicing other than that contained in the operating
instructions unless you are qualified to do so. Refer all servicing to qualified service personnel.
Applicable to Central 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.
Applicable to Central unit and Expansion 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.
• 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.
Applicable to Central unit, Conference unit, and Expansion unit
• 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.
• 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.
Applicable to Central unit and Conference unit
• 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.
Indicates a potentially hazardous situation which, if mishandled, could
result in moderate or minor personal injury, and/or property damage.
CAUTION
Applicable to Central unit, Conference unit, and Expansion unit
This is a class A product.
In a domestic environment this product may cause radio interference in which case the user may be
required to take adequate measures.

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2. GENERAL DESCRIPTION
The TOA TS-910 Series conference system permits wired system unit via CAT-5 LAN cable connections to be
used in combination.
The Chairman and Delegate units (collectively referred to as “Conference units”) are connected to the Central
unit via the Expansion unit and Bridge unit.
A total of up to 192 Conference units can be connected to the Central unit of each system.
The Expansion unit and Bridge unit are necessary for connection of the Conference units. (Refer to
p. 22.)
The Central unit is used to perform system function settings, status display, etc.
3. FEATURES
• The number of Conference units to be used can be freely selected depending on the number of participants.
A total of up to 192 Conference units can be installed in a single system.
• A Simultaneous Speaker Number Restrictor function reduces the chance of chaos and confusion that can
result from too many speakers trying to talk simultaneously.
• A Speech Priority Selector function permits selection of operating priority (first-in-first-out or last-in-first-out)
when the speech key is pressed.
• If any microphones are not manually turned off after speaking, the system’s Mic-Off function automatically
switches them off if not in use for approximately 30 seconds.
• A built-in Feedback Suppression Function (FBS) ensures more efficient reduction of acoustic feedback*.
When Conference units are in use, their monitor speakers are automatically turned off, eliminating concerns
about acoustic feedback.
• Depending on installation requirements, wired microphones, music playing equipment and other devices can
be freely combined and used within the system.
• Recording equipment can be easily connected to the Central unit, making it ideal for preparing conference
minutes.
* Acoustic feedback: The squeal or howl of a sound loop created when speaker output is picked up by a
microphone, amplified by an amplifier and further output from the speaker again.
[Conference unit]
• Both 900 Series Conference units equipped with Voting and base/translation language selection functions
and 800 Series units designed primarily for speaking and monitoring can be freely used. In the case of the
800 Series Conference units, they can monitor the base language only.
• Each 900 Series and 800 Series feature a selection of both Conference units.
• Chairman units feature a Priority Speech Key Operation function that allows the Chairman unit to take speech
priority over the Delegate units with the simple press of a button.
• Conference unit microphones are attached via XLR connectors that permit easy detachment for more space-
saving convenience in storage.
• Two types of Conference unit microphones are made available and freely interchangeable: Standard type
and Long type.
• Connections between wired Conference units and the Expansion unit (or Bridge unit) can be made using a
single CAT-5 LAN cable, facilitating installation and construction work.
• A total of up to 24 Conference units can be connected per TS-918 Expansion unit.
• Up to 8 TS-918 Expansion units can be installed.
• Two types of Bridge units are available: single-Conference unit connection type and 4-Conference unit
connection type, either of which is freely selectable depending on installation conditions.

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4. SYSTEM EQUIPMENT CONFIGURATION
1 4
Bridge unit
TS-919B1
1
TS-919B1
BRIDGE
BRIDGEUNIT
POWER
TALK
POWER
TALK
PRIORITY
POWER
TALK
BRIDGE UNIT
EXPANSION
TS-919B4
BRIDGE
1 2 3 4
Delegate unit
TS-912/812 No. 1 No. 4
Chairman unit
TS-911/811
Bridge unit
TS-919B4
Central unit
TS-910
Expansion unit
TS-918
Half Width Blank Panel
(for TS-918)
Rack Joint Bracket
(for TS-918)
Rack Mounting Bracket
MB-TS900 (for TS-910)

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1
2
3
4
5 6 7 8 9
10
21
22
11 12 13
14 15 16 18 1917 20
23
24
5. NOMENCLATURE AND FUNCTIONS
5.1. Central Unit TS-910
[Top]
1. Power switch
Setting this switch to the ON position causes the
Power indicator to light.
2. Audio signal receiving indicators
Light up when audio signals are received from
Conference 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 Conference units currently being used for
speech. (Which indicator will light is not specied.)
3. Data signal receiving indicator
Lights when control data is received from the
Conference unit.
4. Battery indicator
Not used.
5. External control communication indicator
Remains lit during communications with a computer
(PC) or operation panel connected to the External
Control terminal (30) or (32).
6. External control priority indicator
Either lights or ashes when a PC or operation
panel connected to the External Control terminal
(30) or (32) 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 (28) 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 (26) 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 (25) located on the rear panel. Speech
input to the AUX 3 terminal is output to both
the base language*1and translation language*2
channels.
10. Microphone Mix/Cut switch
(for the base language channel)
MIX: Speech input from the Conference units,
and AUX 1 and MIC 1 input signals are
output to the base language channel*1, and
recording and line outputs.
CUT: Speech input from the Conference units is
not output to the base language channel*1.
The AUX 1 and MIC 1 input signals are not
delivered to the recording and line outputs.
Note
This switch is factory-preset to the MIX position.

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11. MIC 1 input volume control
Adjusts the input level of the MIC 1 Input Terminal
(29) on the rear panel. Signals input to the MIC
1 terminal are output to the base language
channel*1.
12. Microphone Mix/Cut switch
(for the translation language channel)
MIX: Speech input from the Conference units is
output to the translation language channel*2.
CUT: Speech input from the Conference units
is not output to the translation language
channel*2.
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
(27) on the rear panel. Signals input to the MIC
2 terminal are output to the translation language
channel*2.
14. Voting result display
Computes the number of votes cast by individual
Conference 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. 41.)
This button is also used to conrm installation
conditions for the Conference unit. (Refer to p.
33.)
16. Simultaneous speaker No. setting switch
Used to set the number of Conference units that
can be simultaneously operated. The indications
[1], [2], [3], and [4] represent the number of
simultaneously operable units. (Refer to p. 35.)
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 Conference unit is pressed. (Refer to p. 35.)
A: First-in-rst-out priority
B: Last-in-rst-out priority
C: Priority xed for the rst unit, and last-in-rst-
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 Conference unit
microphones 30 seconds after speech is
completed if the user should neglect to turn off
the microphone. (Refer to p. 36.)
Note
This switch is factory-preset to the OFF position.
19. Speech volume control
Adjusts the microphone volume of the Conference unit.
20. FBS (Feedback Suppressor) Switch
Use to set FBS operation.
EXT: Select when using an external graphic
equalizer.
OFF: Select when not using the FBS function.
AUTO: Select to suppress acoustic feedback by
automatically searching for a frequency
generating acoustic feedback.
MANUAL: Select to manually search for a
feedback-generating frequency.
For details, refer to p. 42.
21. FBS (Feedback Suppressor) control
Rotate to search for a frequency generating
acoustic feedback when the FBS switch (20) is
set to “MANUAL.”
For details, refer to p. 43.
22. Headphone jack (Mini-jack)
Connects to headphones.
23. Headphone volume control
Adjusts the sound volume of the headphones.
24. Headphone channel selector switch
Used to choose the output to be monitored by a
connected headphones 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.
*1Base Language: Mixed audio signals from the AUX 1 input, MIC 1 input, and in-use Conference units.
*2Translation Language: Mixed audio signals from the AUX 2 input, MIC 2 input, and in-use Conference units.

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25 26 27 28 29 30 31 32 33 34 35 36 37
38 39
40 41 42 43 44
[Rear]
25. AUX 3 input terminal
−20 dB*, 10 kΩ, unbalanced, phone jack.
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.
26. AUX 2 input terminal
−20 dB*, 10 kΩ, unbalanced, phone jack.
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.
27. MIC 2 input terminal
−60 dB*, 600 Ω, unbalanced, phone jack.
Connect a wired microphone to this terminal.
Speech input from the microphone connected to
this terminal is relayed to the translation language
channel.
28. AUX 1 input terminal
−20 dB*, 10 kΩ, unbalanced, phone jack.
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.
29. MIC 1 input terminal
−60 dB*, 600 Ω, unbalanced, phone jack.
Connect a wired microphone to this terminal.
Speech input from the microphone connected
to this terminal is relayed to the base language
channel.
30. External control terminal [RS-232C]
Connect this terminal to the serial port of a
PC, operation panel, or other external control
equipment.
31. External control terminal selection switch
Used to select either RS-232C (30) or USB (32)
external control terminals.
32. External control terminal [USB]
Connects to the external control terminal of a
PC, operation panel or other connected external
equipment.
33. Level volume control
Adjusts the line output (34) volume.
34. Line output terminal
−20 dB*, 10 kΩ, unbalanced, phone jack.
Connect an amplier, etc. for public address
applications. Speech input from the Conference
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
(35) determine whether or not such speech input
is output.
35. AUX 3 output Mix/Cut switch
Determines whether or not speech input is relayed
from AUX 3 terminal to the line output (34). 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.
36. Recording output terminal
−20 dB*, 10 kΩ, unbalanced, phone jack, RCA jacks.
Connect an Alternate Recording Deck or MD
recorder. An amplier 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.
37. Graphic equalizer input terminal
−20 dB*, 10 kΩ, unbalanced, RCA jack.
Connect this terminal to the graphic equalizer’s
output terminal.

11
38. Graphic equalizer output terminal
−20 dB*, 10 kΩ, unbalanced, RCA jack.
Connect this terminal to the graphic equalizer’s
input terminal.
39. 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.
40. DC inlet
Connect the supplied AC adapter to this terminal.
41. Cable clip
Run the AC adapter cable through this clip to
prevent its plug from being removed from the DC
inlet.
42. Short circuit indicator
Lights when the Expansion unit or its connected
cable is shorted.
43. Expansion unit I/O terminals
Connect the Expansion unit or Distributor to these
terminals.
By using the YW-1022 (2-branch distributor) and/
or YW-1024 (4-branch distributor), up to 8 TS-918
Expansion units can be connected.
44. Functional earth terminal
Hum noise may be generated when external
equipment is connected to the unit. Connecting
this terminal to the functional earth terminal of the
external equipment may reduce the hum noise.
Note: This terminal is not for protective earth.
* 0 dB = 1 V
Cable clip
AC adapter cable
To the DC inlet

12
5.2. Chairman Units TS-911 and TS-811
[TS-911 Top] [TS-811 Top]
PUSH
1
2
3
4
5
6
7
8
PUSH
1
2
3
5
6
7
8
1. Monitor speaker
Speech signals from other Conference units and
other audio signals from the Central unit are output
from this speaker. (Refer to the table below.)
Model Output signal
TS- 911 Base language or Translation language
Note: Switchable by the Monitor selector
switch (16).
TS - 811 Base language
Use the right-side Monitor Volume Control (14) 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).
4. Voting keys (TS-911 only)
Use these keys to start, end, and cast voting. The
voting status indicator is provided above each key.
5. Speech indicator
Remains lit while the microphone is in use (during
speech). The indicator ashes when the unit is out
of the communications service area.
6. Talk key
When this key is pressed, both the Microphone In-
Use indicator (3) and the Speech indicator (5) light,
and the microphone turns on. Pressing this key
again turns off both indicators and the microphone.
7. Priority speech key
Gives speaking priority to the current speaker.
When this key is used for speech, no other delegate
units can be used. Also, only the current speech
made with the Priority speech key is output at the
Central Unit’s recording and line outputs.
The key has 2 different operating modes, PTT and
ALT, which can be selected with the Priority speech
key operation setting switch (12).
• When PTT mode is selected, the microphone
only turns on while the key is pressed, during
which time the Speech (5) and Microphone in-
use (3) indicators remain lit.
• When ALT mode is selected, pressing the key
turns on the microphone and causes the Speech
(5) and Microphone in-use (3) indicators to light.
Pressing the key again turns off the microphone
and these indicators.
If Chime is set to sound, a chime tone sounds when
the key is pressed. For the chime setting, use the
Priority chime mute switch (10).
8. Power indicator
Lights when power is supplied from the TS-910
Central unit via the TS-918 Expansion unit.
Note
No microphone is supplied with the TS-911/811.

13
[Bottom]
[TS-911 setting switch label] [TS-811 setting switch label]
RESET
OFF
OFF
PTT
100
10
1
ON
NOT USE
UNIT ID
ALT
VOTE
PRIORITY MODE
ON ON
1 1 22 3 4
ON
PRIORITY RESTORE
CHIME MUTE
RESET
OFF
PTT
100
10
1
ON
NOT USE
NOT USE
UNIT ID
ALT
PRIORITY RESTORE
CHIME MUTE
PRIORITY MODE
ON ON
1 1 22 3 4
Note
The figure below shows the setting switch labels for both models.
Remove the cover on the bottom side of the unit to expose its setting switches.
9
10
9
10
11
12
12
13 13
9. Priority operation setting switch
Following completion of a priority speech, this
switch is used to reset the operating status
of Conference units whose operations were
interrupted by the depression of a Priority Speech
key (7).
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.
10. Priority chime mute switch
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.
11. Voting activation switch (TS-911 only)
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.
12. Priority speech key operation setting switch
Use to set the Priority speech key operation
mode.
PTT: Speech only possible while the Priority
speech key is being pressed.
ALT: Speech enabled when the Priority speech
key is pressed, and disabled when the key
is pressed again.
Note
The switch is factory-preset to PTT.
13. Unit address number setting switch
Set the unit address number (001 – 192), taking
care to ensure that the same number is not
duplicated in the system.
If the number [000] is assigned to a unit, the user
of that unit cannot speak. However, the unit can
be used for monitoring.
Set a numeral for the ones place and tens place.
Set this switch to OFF to set the hundreds place
to “0” and to ON to set it to “1.”
Note
This number is factory-preset to [000].

14
[Right side]
[Left side]
14 15 16
15 17
14. Monitor volume control
Adjusts the output volume of the monitor speaker
and right-side headphone output.
15. Headphone jack
Connect headphones to this jack (mini-jack).
Connecting the headphone cuts off the output
from the monitor speaker. (Refer to the table
below.)
Model Output signal
TS- 911 Base language or Translation language
Note: Switchable by the Monitor selector
switch (16).
TS - 811 Base language
Note
A headphone jack is located on both the left and
right side panels.
16. Monitor selector switch (TS-911 only)
Selects either Base Language or Translation
Language for the source to be output to the
monitor speaker and headphone.
17. Headphone volume control
Adjusts the output volume of the left-side
headphone output.

15
18
[Rear]
18. Communication cable connection terminal
Connects to the TS-919B4 or TS-919B1
Bridge unit with a CAT-5 LAN cable.

16
5.3. Delegate Units TS-912 and TS-812
[TS-912 Top] [TS-812 Top]
PUSH
1
2
3
4
5
6
7
PUSH
1
2
3
5
6
7
1. Monitor speaker
Speech signals from other Conference units and
other audio signals from the Central unit are output
from this speaker. (Refer to the table below.)
Model Output signal
TS-912 Base language or Translation language
Note: Switchable by the Monitor selector
switc h (11).
TS-812 Base language
Use the right-side Monitor Volume Control (9) 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).
4. Voting keys (TS-912 only)
Use these keys to start, end, and cast voting. The
voting status indicator is provided on each key.
5. Speech indicator
Remains lit while the microphone is in use (during
speech). The indicator ashes when the unit is out
of the communications service area.
6. Talk key
When this key is pressed, both the Microphone In-
Use indicator (3) and the Speech indicator (5) light,
and the microphone turns on. Pressing this key
again turns off both indicators and the microphone.
7. Power indicator
Lights when power is supplied from the TS-910
Central unit via the TS-918 Expansion unit.
Note
No microphone is supplied with the TS-912/812.

17
[Bottom]
100
10
1
NOT USE
UNIT ID
ON
1 2
Note
The figure below shows the setting switch label.
Remove the cover on the bottom side of the unit to expose its setting switches.
8
9 10 11
8. Unit address number setting switch
Set the unit address number (001 – 192), taking
care to ensure that the same number is not
duplicated in the system.
If the number [000] is assigned to a unit, the user
of that unit cannot speak. However, the unit can be
used for monitoring.
Set a numeral for the ones place and tens place.
Set this switch to OFF to set the hundreds place to
“0” and to ON to set it to “1.”
Note
This number is factory-preset to [000].
9. Monitor volume control
Adjusts the output volume of the monitor speaker
and right-side headphone output.
10. Headphone jack
Connect headphones to this jack (mini-jack).
Connecting the headphone cuts off the output
from the monitor speaker. (Refer to the table
below.)
Model Output signal
TS-912 Base language or Translation language
Note: Switchable by the Monitor selector
switc h (11).
TS-812 Base language
Note
A headphone jack is located on both the left and
right side panels.
11. Monitor selector switch (TS-912 only)
Selects either Base Language or Translation
Language for the source to be output to the
monitor speaker and headphone.
[Right side]

18
10 12
[Left side]
[Rear]
13
13. Communication cable connection terminal
Connects to the TS-919B4 or TS-919B1 Bridge
unit with a CAT-5 LAN cable.
12. Headphone volume control
Adjusts the output volume of the left-side
headphone output.

19
5.4. Expansion Unit TS-918
3 4 5 6 7
8
1
2
[Front]
[Rear]
1. Power indicator
Lights when connecting the supplied AC adapter to
the DC inlet (5).
2. Connection status indicators
The corresponding LINE indicator lights when the
TS-919B4 or TS-919B1 Bridge unit is connected to
the Bridge unit connection terminal (6) and power
is supplied to it.
3. Functional earth terminal
Hum noise may be generated when external
equipment is connected to the unit. Connecting
this terminal to the functional earth terminal of the
external equipment may reduce the hum noise.
Note: This terminal is not for protective earth.
4. Cable clip
Run the AC adapter cable through this clip to
prevent its plug from being removed from the DC
inlet.
5. DC inlet
Connect the supplied AC adapter to this terminal.
6. Bridge unit connection terminals
Connect the TS-919B4 or TS-99B1 Bridge unit to
this terminal with a CAT-5 LAN cable.
7. Central unit connection terminal
Connect the TS-910 Central unit, or YW-1022 or
YW-1024 Distributor to this terminal with a coaxial
cable.
8. Connection status indicators
The corresponding LINE indicator lights when the
TS-919B4 or TS-919B1 Bridge unit is connected to
the Bridge unit connection terminal (6) and power
is supplied to it.

20
5.6. Bridge Unit (1-Conference unit connection type) TS-919B1
5.5. Bridge Unit (4-Conference unit connection type) TS-919B4
[Front]
[Bottom]
BRIDGE UNIT
EXPANSION
TS-919B4
BRIDGE
1 2 3 4
1
2 3 4
1
TS-919B1
EXPANSION BRIDGE
BRIDGE UNIT
[Right side][Left side]
[Bottom]
[Front]
1
2
3
4
1. Connection status indicators
The corresponding LINE indicator lights
when the Conference unit is connected to
the Conference unit connection terminal (3)
and power is supplied to it.
2.
Communication cable connection terminal
(Expansion unit side)
Connects to the TS-918 Expansion unit, or
TS-919B4 or TS-919B1 Bridge unit.
3. Conference unit connection terminals
Connect to the Conference units.
4. Communication cable connection terminal
(Bridge unit side)
Connects to the TS-919B4 or TS-919B1
Bridge unit.
1.
Communication cable connection terminal
(Expansion unit side)
Connects to the TS-918 Expansion unit, or
TS-919B4 or TS-919B1 Bridge unit.
2. Connection status indicator
Lights when the Conference unit is connected
to the Conference unit connection terminal
(4) and power is supplied to it.
3. Communication cable connection terminal
(Bridge unit side)
Connects to the TS-919B4 or TS-919B1
Bridge unit.
4. Conference unit connection terminal
Connects to the Conference unit.