OPERATING INSTRUCTIONS
CONFERENCE SYSTEM
TS-770 (CENTRAL UNIT)
TS-771 (CHAIRMAN UNIT)
TS-772 (DELEGATE UNIT)
TS-773 (MICROPHONE)
TS-774 (MICROPHONE)
TS-770 SERIES
TS-775 (REMOTE DELEGATE INTERFACE UNIT)
YR-770-2M (2 m EXTENSION CORD)
YR-770-10M (10 m EXTENSION CORD)
TS-770
TS-771
TS-772
TS-775
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.
TABLE OF CONTENTS
1. IMPORTANT SAFETY INSTRUCTIONS ..................................................... 3
2. SAFETY PRECAUTIONS ................................................................................. 4
3. GENERAL DESCRIPTION .............................................................................. 6
4. FEATURES ........................................................................................................... 6
5. NOMENCLATURE AND FUNCTIONS
5.1. TS-770 Central Unit ........................................................................................... 7
5.2. TS-771 Chairman Unit and TS-772 Delegate Unit ............................................. 9
5.3. TS-775 Remote Delegate Interface Unit .......................................................... 11
6. OPERATING CHAIRMAN AND DELEGATE UNITS
6.1. Making Speech ................................................................................................ 12
6.2. Making Priority Speech (Chairman Unit TS-771 Only) ..................................... 13
7. HOLDING REMOTE CONFERENCES
7.1. Remote Conference Procedures ...................................................................... 14
7.2. Speech Operation When the Remote Delegate Interface Unit
Is Set to AUTO Mode ....................................................................................... 14
7.3. Speech Operation When the Remote Delegate Interface Unit
Is Set to MANUAL Mode .................................................................................. 15
7.4. Setting Examples ............................................................................................. 15
8. FUNCTION SETTINGS
8.1. Speaker Restriction Function
8.1.1. Setting procedure ................................................................................... 16
8.1.2. Restricted number of simultaneously operable Delegate units
and each conference unit's operation .................................................... 16
8.2. Automatic Mic-Off Function .............................................................................. 17
8.3 All Mic-On Function ........................................................................................... 17
9. RECORDING
9.1. Recording with the Central Unit ....................................................................... 18
9.2. Recording with the Chairman Unit or Delegate Unit ........................................ 18
10. INSTALLATION AND CONNECTION
10.1. Connection Example ...................................................................................... 19
10.2. Installation Procedures ................................................................................... 20
10.3. Basic System Installation and Adjustment
10.3.1. Connecting the Chairman and Delegate units to the Central unit ...... 21
10.3.2. Setting functions and adjusting Chairman and Delegate units
sound output volume .......................................................................... 23
11. IF USING MULTIPLE CENTRAL UNITS: .................................................. 25
12. WHEN HOLDING REMOTE CONFERENCES: ...................................... 26
13. BLOCK DIAGRAMS
13.1. TS-770 Central Unit ....................................................................................... 29
13.2. TS-771 Chairman Unit ................................................................................... 29
13.3. TS-772 Delegate Unit ..................................................................................... 30
13.4. TS-775 Remote Delegate Interface Unit ........................................................ 30
14. SPECIFICATIONS
14.1. TS-770 Central Unit ....................................................................................... 31
14.2. TS-771 Chairman Unit and TS-772 Delegate Unit ......................................... 31
14.3. TS-773 and TS-774 Microphones .................................................................. 32
14.4. TS-775 Remote Delegate Interface Unit ........................................................ 32
14.5. YR-770-2M 2 m Extension Cord and YR-770-10M 10 m Extension Cord ..... 32
2
1. IMPORTANT SAFETY INSTRUCTIONS
• Read these instructions.
• Keep these instructions.
• Heed all warnings.
• Follow all instructions.
• Do not use this apparatus near water.
• Clean only with dry cloth.
• Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
• Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including
amplifiers) that produce heat.
• Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide
blade or the third prong is provided for your safety. If the provided plug does not fit into your outlet, consult
an electrician for replacement of the obsolete outlet.
• Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and
the point where they exit from the apparatus.
• Only use attachments/accessories specified by the manufacturer.
• Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer,
or sold with the apparatus. When a cart is used, use caution when moving the
cart/apparatus combination to avoid injury from tip-over.
• Unplug this apparatus during lightning storms or when unused for long periods of time.
• Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have
fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or
has been dropped.
3
2. 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.
WARNING
Indicates a potentially hazardous situation which, if mishandled, could
result in death or serious personal injury.
CAUTION
Indicates a potentially hazardous situation which, if mishandled, could
result in moderate or minor personal injury, and/or property damage.
WARNING
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. (TS770 only)
• 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. (TS-770 only)
• 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.
• Since the unit is designed for in-door use, do not
install it outdoors. If installed outdoors, the aging of
parts causes the unit to fall off, resulting in personal
injury. Also, when it gets wet with rain, there is a
danger of electric shock.
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.
4
· 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.) (TS-770 only)
· 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
qualified service personnel.
• 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 in the ventilation slots of the
unit's cover as this may result in fire or electric
shock.
• Do not touch a power supply plug during thunder
and lightning, as this may result in electric shock.
(TS-770 only)
• The apparatus shall be connected to a mains
socket outlet with a protective earthing connection.
(TS-770 only)
• The socket-outlet shall be installed near the
equipment and the plug (disconnecting device)
shall be easily accessible. (TS-770 only)
CAUTION
When Installing the Unit
• Never plug in nor remove the power supply plug
with wet hands, as doing so may cause electric
shock. (TS-770 only)
• 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. (TS-770 only)
• 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. (TS-770 only)
• 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
• Contact your TOA dealer as to the cleaning. If dust
is allowed to accumulate in the unit over a long
period of time, a fire or damage to the unit may
result. (TS-770 only)
• 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. (TS-770 only)
• 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. (TS-770 only)
• Do not block the ventilation slots in the unit's cover.
Doing so may cause heat to build up inside the unit
and result in fire. Also, periodically clean the
ventilation slots of dust. (TS-770 only)
The lighting flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user
to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of
sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user to the presence of
important operation and maintenance (servicing) instruction in the literature accompanying the
appliance.
5
3. GENERAL DESCRIPTION
The TS-770 Series conference system is designed for quick and easy installation and storage.
The system can be installed by merely connecting conference units* to the TS-770 Central unit.
The use of the Remote Delegate Interface unit permits a party in remote location to participate in the
conference.
* Collective name of the following 3 models: TS-771 Chairman Unit, TS-772 Delegate Unit, and TS-775
Remote Delegate Interface Unit.
4. FEATURES
• Conference speech can be amplified by simply connecting the Chairman and Delegate units to the Central
unit.
• Connecting the Remote Delegate Interface unit to the system allows conferences to be held between remote
locations via telephone lines or PCs.
• Up to 70 conference units can be connected per Central unit. (35 units per line x 2 lines.)
• Up to 3 Central units and up to 210 conference units can be connected per system.
• Optional 2-meter and 10-meter extension cables allow wiring suitable to local installation conditions.
• Either the TS-773 or TS-774 Microphone can be used with the TS-771 Chairman unit and the TS-772
Delegate unit.
• Because the microphone for both the Chairman and Delegate units is detachable, both units can be stored
without taking up much space.
• Test function allows easy confirmation of connections between conference units.
• The number of simultaneously operable Delegate units can be limited using the Speaker Restriction
function. (Can be set to 0, 1, 3 or 6 units.)
• Even if the speaker forgets to turn off his or her microphone after speech completion, the Automatic Mic-Off
function automatically switches off the microphone after a preset interval elapses. (Can be set to OFF, 20 or
40 seconds.)
• Conference contents can be recorded using a recording equipment.
• All Mic-On function allows conferences to be held without requiring talk key operation. (A dedicated function
for conference recording.)
6
5. NOMENCLATURE AND FUNCTIONS
5.1. TS-770 Central Unit
[Front]
2
3
4
5
6
1
CENTRAL UNIT TS-770
7
8
9
10
1. Power indicator [POWER]
Lights when the power switch (11) on the rear
panel is set to the ON position.
7. Mic input jack [MIC]
Connects to a microphone.
(600 Ω, –60 dB*, unbalanced)
2. Microphone volume control [MIC]
Adjusts the volume of the microphone connected
to the microphone input jack (7).
8. AUX input jack [AUX]
Connects to a CD or cassette deck.
(10 kΩ, –20 dB*, unbalanced)
3. AUX volume control [AUX]
Adjusts the volume of equipment connected to
AUX input jack (8).
4. Line volume control [LINE]
Adjusts the volume of the conference unit's built-in
speaker.
9. Test/All Mic-On Switch [TEST/MIC ON]
Setting this switch to the ON position turns on
the microphones of all conference units. This
switch is intended for testing purposes during
installation, as well as for open conferences in
which speech can be made freely from any
conference unit.
5. Speaker restriction switch [MIC LIMITER]
Sets the number of delegate units that can be
used simultaneously.
10. Test/All Mic-On Indicator
Lights when the Test/All Mic-On switch is set to
the ON position.
6. Automatic mic-off setting switch [TIME OUT]
It is possible to set the conference unit's
microphone to be automatically turned off after
speech completion.
* 0 dB = 1 V
7
[Rear]
12
13
11
18
11. Power switch [POWER]
Power is switched on and off with each
depression of this switch.
15
19
20
16
17
21
17. Recording output terminals [REC OUT]
(RCA jack)
Connect to a recording machine.
(10 kΩ, –20 dB*, unbalanced)
12. Expansion Switch [EXPANSION/MAIN]
Used when expanding the Central unit.
(Equipped with a lock mechanism.) Set this
switch to the EXPANSION position if expanded.
18. AC inlet
Connects to the supplied power cord.
13. Expansion IN/OUT terminals [EXT 1/2]
Connect to the Central unit(s) to be expanded.
19. Equalizer insertion input terminal
[EQUALIZER IN]
Connects to the output terminal of equalizer.
(10 kΩ, –20 dB*, unbalanced)
14. LINE 1 connection terminal [LINE 1]
Connects to the conference unit. Up to 35
conference units can be connected per line.
15. LINE 2 connection terminal [LINE 2]
Connects to the conference unit. Up to 35
conference units can be connected per line.
16. Recording output terminal [REC OUT]
(Phone jack)
Connects to an Alternating cassette recorder,
etc. (10 kΩ, –20 dB*, unbalanced)
8
14
20. Equalizer insertion output terminal
[EQUALIZER OUT]
Connects to the input terminal of equalizer.
(10 kΩ, –20 dB*, unbalanced)
21. Equalizer insertion switch
[EQUALIZER ON/OFF]
Set to the ON position when using the equalizer.
* 0 dB = 1 V
5.2. TS-771 Chairman Unit and TS-772 Delegate Unit
[TS-771 Top]
[TS-772 Top]
2
1
1
2
3
TS-771
PRIORITY
5
3
4
TALK
TS-772
4
TALK
6
6
2. Microphone connection connector
Connects to the TS-773 or TS-774 Microphone.
5. Priority key [PRIORITY] (TS-771 only)
While this key is pressed, the microphone in-use
indicator remains lit, allowing priority speech to go
through. In this case, no other conference units
can be used. Pressing this key causes a single
tone chime to sound at the remaining conference
units.
3. Speaker
Outputs other speakers' voices. Adjust the volume
with the TS-770 Central unit's line volume control.
The built-in speaker is temporarily disabled while
speech is made using this unit.
6. Talk key [TALK]
Press this key to speak. The microphone in-use
indicator lights. Press this key again to turn off the
microphone. The microphone in-use indicator
extinguishes.
1. Line connection cord
Connect this cord to the Line Connection terminal
of the Central unit or that of the next preceding
linked conference unit.
4. Microphone in-use indicator
Lights when the microphone can be used.
9
[TS-771/TS-772 Side]
7
7. Volume control
Adjusts the sound volume from
Recording/Headphone Output Terminal.
the
Note
Use the volume control of the TS-770 Central unit
to adjust the sound output volume from the
internal speaker (3).
8
8. Recording/Headphone output terminals
[HEADPHONES]
Connect recording equipment or headphones to
these terminals. No sound is output from the
internal speaker (3) while this terminal is in use.
[TS-771/TS-772 Rear]
9. Line connection terminal [LINE]
Connect the following linked conference unit's
line connection cord to this terminal.
9 10
10
10. Control output terminal
[CONTROL OUTPUT]
This terminal is an open collector output
interlocked with the Microphone in-use indicator,
and is enabled when in speech mode.
(24 V DC, Max. 50 mA)
5.3. TS-775 Remote Delegate Interface Unit
[Front]
1
2
3
4
1. Modular jack [HANDSET MODULAR]
Used to connect a telephone equipped with a
handset using modular connectors.
5
6 7
8
9
5. Microphone input volume control [INPUT]
Adjusts the microphone input volume.
6. Speaker output volume control [OUTPUT]
Adjusts the speaker output volume.
* Detach the handset from the telephone and
connect the Remote Delegate Interface unit to
the telephone instead.
7. Speech Indicator
Lights when a remote party is allowed to speak.
2. Handset selector switch [HANDSET TYPE]
Set this switch to either the A or B position
depending on the type of telephone handset.
8. Auto/Manual selector switch [AUTO/MANUAL]
Setting this switch to the AUTO position permits
the remote party to speak without requiring Talk
key operation.
The MANUAL position only permits the party to
speak when the Talk key is pressed.
3. Microphone input terminal [INPUT –50 dBV]
Connect this terminal to the PC's headphone
output.
4. Speaker output terminal [OUTPUT –40 dBV]
Connect this terminal to the PC's microphone
input.
9. Talk key [TALK]
Used to enable speech when the Auto/Manual
Selector switch is set to the MANUAL position.
Speech is alternately enabled and disabled with
each press of this key.
[Rear]
10
11
12
10. Line connection cord
Connect this cord to the Central unit or to the
next preceding linked conference unit.
11. Line connection terminal [LINE]
Connect this terminal to the following linked
conference unit.
12. Control output terminal
[CONTROL OUTPUT]
Output is closed ("make") when in speech mode.
(24 V DC, Max. 50 mA)
11
6. OPERATING CHAIRMAN AND DELEGATE UNITS
This section explains how to operate these units when the All Mic-On function is set to OFF (default setting).
When this function is set to ON, speakers can talk anytime from any conference unit with no need to operate
any switches or keys.
To enable or disable this function, use the Test/All Mic-On switch on the Central unit. (Refer to p. 17.)
6.1. Making Speech
Step 1. Press the TALK key once.
The microphone in-use indicator lights, and the
microphone turns on.
[Example: TS-772 Delegate unit]
Microphone in-use indicator: Lights.
Notes
• No sound is output from the internal speaker of the
operated unit while the Microphone in-use indicator
remains lit. However, audio signal is output from the
Recording/Headphone output terminal.
• While the Chairman unit is in priority speech mode
(see page 13), other unit's microphones do not turn on
even if their Talk keys are pressed.
• The microphones of some Delegate units may not turn
on even if their Talk keys are pressed, depending on
the setting of the Speaker Restriction function (see
page 16).
TS-772
TALK
Step 2. Speak into the microphone.
Step 3. Press the Talk key again after speech completion.
The Microphone in-use indicator extinguishes and sound
is audible from the operated unit's speaker.
Microphone in-use indicator: Extinguishes.
TS-772
TALK
12
6.2. Making Priority Speech (Chairman Unit TS-771 Only)
Holding down the priority key on the Chairman unit gives that unit speech priority and allows it to interrupt
other delegate units.
Step 1. Press the Priority key.
The microphone in-use indicator lights, and the microphone
turns on. Pressing this key causes a single tone chime to
sound at the remaining conference units.
Note
No sound is output from the internal speaker of the
operated unit while the Microphone in-use indicator remains
lit. However, audio signal is output from the
Recording/Headphone output terminal.
Microphone in-use indicator: Lights.
TS-771
PRIORITY
TALK
Step 2. Speak while holding down the Priority key.
No delegate units can be used while the Priority key is
pressed.
Step 3. The microphone in-use indicator extinguishes, turning on
the built-in speaker.
Notes
• In the system employing 2 or 3 chairman units, even while 1 unit is making priority speech, other chairman
unit(s) can also make priority speech by pressing the Priority key although a single-tone chime is not
sounded.
• Any previous speech that has been interrupted by the priority speech is not restored even after priority
speech completion. Press the Talk key again, and make a speech after microphone in-use indicator lights.
• When the Remote Delegate Interface unit is set to Auto mode, if the Chairman unit's priority key is pressed
while a remote party is speaking, the Chairman unit can speak but cannot interrupt the remote party's
speech in progress.
13
7. HOLDING REMOTE CONFERENCES
Using the TS-775 Remote Delegate Interface unit instead of the Delegate unit permits a remote party to
participate in conferences via telephone or PC.
7.1. Remote Conference Procedures
Step 1. Set the telephones or PCs in both the conference room and remote locations to conversation mode,
then connect the telephone or PC in the conference room to the Remote Delegate Interface unit.
For details, refer to p. 26.
Step 2. Set the Remote Delegate unit's Auto/Manual Selector switch to "AUTO" or "MANUAL," whichever is
suitable for the type of conference. Depending on the selected switch position, the method of enabling
speech differs.
However, when the Central unit's All Mic-On function is set to ON, any conference unit can speak at
any time without requiring any key operation.
TS-775
Remote Delegate Interface Unit
Auto/Manual Selector switch
(Factory default: AUTO)
7.2. Speech Operation When the Remote Delegate Interface Unit Is Set to AUTO Mode
[Conference room]
[Remote location]
TS-775
Remote Delegate Interface Unit
Shift to the "AUTO."
The speech indicator lights.
Speak while nobody else is speaking.
If speech is initiated while nobody else is speaking, the Remote Delegate Interface unit detects the speaker's
audio signal and automatically switches to speech mode (the unit's Speech indicator lights). After speech is
completed, the speech mode is reset and the Speech indicator extinguishes.
Regardless of the setting of the Speaker Restriction function (see page 16), provided nobody else is speaking,
the speaker's audio signal is detected and the speaker is allowed to speak.
Speech made through the Remote Delegate Interface unit is not interrupted even if the Chairman unit's priority
key (see the next page) is pressed during the speech.
Note
This unit is disabled for speech if another party is already speaking.
14
7.3. Speech Operation When the Remote Delegate Interface Unit Is Set to MANUAL Mode
[Conference room]
[Remote location]
TS-775
Remote Delegate Interface Unit
Shift to the "MANUAL."
Press the Talk key.
The speech indicator lights.
Speak while the Talk key is
turned on.
The remote party is permitted to speak when the Remote Delegate Interface unit's Talk key is pressed, and
cannot speak when the key is pressed again.
Set the unit to MANUAL mode to enable the chairman or other parties in the conference room to prevent a
remote party from freely speaking. In the MANUAL mode, the number of simultaneously operable Delegate
units can be limited (Speaker Restriction function - see page 16).
7.4. Setting Examples
Step 1. Select MANUAL mode to extinguish the speech indicator when it is desirable to prohibit remote
conference participants from speaking.
[Conference room]
[Remote location]
TS-775
Remote Delegate Interface Unit
Shift to the "MANUAL."
Speech indicator is extinguished.
Speaking is prohibited.
Step 2. When a remote participant requests permission to speak, press the Talk key to enable speech or shift
the AUTO/MANUAL Selector switch to the AUTO position so that the participant may speak at any
time. Select either position according to the circumstances.
[Conference room]
TS-775
[Remote location]
Shift to the "MANUAL."
Press the Talk key.
The speech indicator lights if the Talk key is pressed.
or
Make speech.
Shift to the "AUTO."
The Speech indicator lights if a remote participant speaks.
15
8. FUNCTION SETTINGS
8.1. Speaker Restriction Function
8.1.1. Setting procedure
Using the TS-770 Central Unit's speaker restriction switch, set the number of simultaneously-usable delegate
units (TS-772). Set the switch to 0, 1, 3, or 6 depending on the type of conference.
Delegate units cannot speak if the number is set to "0." (Chairman Priority mode)
TS-770 Central Unit
CENTRAL UNIT TS-770
Speaker restriction switch
(Factory default: 6)
Note
When multiple Central units are connected, different settings cannot be applied for each unit. If settings differ
among these Central units, only the setting of the unit with its Expansion switch set to MAIN takes effect.
8.1.2. Restricted number of simultaneously operable Delegate units and each conference unit's operation
Shown below is the relationship between the Speaker Restriction function and each conference unit's speech
capability.
[Chairman unit]
Chairman units can speak at any time regardless of the setting of the Speaker Restriction function.
[Delegate unit]
Up to the set number of Delegate units can speak simultaneously.
When the full set number of Delegate units are in use (their microphones have been turned on), no
microphones of other Delegate units can be turned on, even if their Talk keys are pressed.
[Remote Delegate Interface unit]
Speech capability differs depending on the Auto/Manual selector switch setting.
• Auto position:
A remote party can speak regardless of the setting of the Speaker Restriction function,
provided another conference unit is not currently in use.
• Manual position: The Remote Delegate Interface unit is also recognized as one of the Delegate units. Up to
the set number of Delegate units, inclusive of the Remote Delegate Interface unit, can be
simultaneously used.
16
8.2. Automatic Mic-Off Function
Using the Automatic mic-off setting switch of the TS-770 Central Unit, the automatic mic-off function can be
set. Whenever a break in speech exceeds a specified period of time, the Central unit presumes speech
completion and automatically turns off the microphone. Delegate unit's microphone turns off after the preset
period of time even if a speaker forgets to turn it off after use.
The break time can be set for either 20 (20s position) or 40 (40s position) seconds. Set the switch to OFF if
this function is unnecessary.
TS-770 Central Unit
CENTRAL UNIT TS-770
Automatic mic-off setting switch
(Factory default: OFF)
Notes
• When the automatic mic-off function is selected, any break in speech exceeding the preset time during
speech will automatically turn off the microphone. Therefore, for conferences in which long breaks in speech
are expected, set the automatic mic-off setting switch to the OFF position.
• In areas with high levels of background noise, the Central unit may mistake the noise to be speech and the
automatic mic-off function will not operate correctly. In such cases, this function should be disabled by
placing the switch in the OFF position.
• In the system employing 2 or 3 Central units, it is not possible to operate the units with each different setting.
Perform the same setting for all connected Central units.
8.3 All Mic-On Function
It is possible to turn on the microphones of all connected conference units by setting the Central unit's All MicOn switch to ON. In this event, no sound is output from Chairman and Delegate unit's internal speakers,
however audio signals are output from their Recording/Headphone Output terminals.
All conference units can speak at any time without requiring Talk key operation, regardless of the Speaker
Restriction function setting. The All Mic-On function is especially useful when wishing to record small
conferences or broadcast conference contents to other areas.
Note
When the All Mic-On function is enabled and it is desirable to have a remote party speak by way of the
Remote Delegate Interface unit, be sure to set the unit's Auto/Manual Selector switch to MANUAL. The party
cannot speak if the switch is set to AUTO.
TS-770 Central Unit
All Mic-On indicator
CENTRAL UNIT TS-770
All Mic-On switch (Factory preset: OFF)
17
9. RECORDING
The contents of the conference can be recorded by connecting an Alternate Cassette Recorder or other
recording equipment to the TS-770 Central Unit, TS-771 Chairman Unit, or TS-772 Delegate Unit.
9.1. Recording with the Central Unit
Step 1. Connect the recording output on the rear panel of the TS-770 Central Unit to the recorder's recording
input.
There are 2 types of recording output terminals: one is of a phone jack and the other is of RCA jacks.
Select either type of jack according to equipment to be connected.
Note
Prepare the connection cables separately.
TS-770 Central Unit
Recording output terminals
Pin plug
(RCA jacks)
To the recorder's recording
input terminal
or
Recording output terminal
(Phone jack)
Phone plug
To the recorder's recording
input terminal
Step 2. Connect a set of headphones into the recorder's monitor output to confirm that the contents of the
conference are being recorded correctly.
If the recording device is equipped with a recording level control, adjust it to an appropriate recording
level.
For use of recording device, refer to the instruction manual supplied with the device.
9.2. Recording with the Chairman Unit or Delegate Unit
Using the Recording/Headphone Output terminals on the side panel, recordings can be made in the same
manner used for the Central unit.
To 1 or 2
Mini plug
To the recorder's recording
input terminal
Recording/Headphone output terminals
TS-771 Chairman unit or
TS-772 Delegate unit
Notes
• If either of Recording/Headphone jacks 1 and 2 is used, no sound is output from the unit's speaker.
• Sound volume from the recording output of the Chairman and Delegate units can be adjusted using the
Central unit's Line Volume control. Setting the line volume control to the minimum position makes it
impossible to record from the recording output of the Chairman and Delegate units. When wishing to record
conference contents without amplifying the sound output from the Chairman and Delegate unit speakers,
use the Central unit's Recording Output terminals.
18
10. INSTALLATION AND CONNECTION
10.1. Connection Example
TS-770 Central unit
TS-772 Delegate units
TS-771 Chairman unit
TS-770 Central unit
TS-775 Remote Delegate
Interface unit
TS-771 Chairman unit
TS-772 Delegate unit
Handset modular
connector
Telephone body
Telephone handset
PABX
C/O
TS-770 Central unit
TS-775 Remote Delegate
Interface unit
TS-771 Chairman unit
TS-772 Delegate unit
Internet
PC
PC
19
10.2. Installation Procedures
Basic System Installation
(1 Central unit and up to 70 Delegate units)
1. Connect the Delegate units to the Central unit (see page 9).
2. Perform function settings for the Central unit, and volume adjustment, etc. for
the Chairman and Delegate units (see page 21).
If using multiple Central units:
(Up to 3 Central Units and up to 210 conference units)
3. Repeat Steps 1 and 2 above for each Central unit (see page 25).
4. Make connections between Central units (see page 25).
If using the Remote Delegate Interface
units (remote conferencing):
5. Establish speech connections with remote participants through PCs or
telephones, then adjust their sound volume (see page 26).
20
10.3. Basic System Installation and Adjustment
This section explains how to install and adjust a basic system comprised of 1 Central Unit and Chairman and
Delegate units.
10.3.1. Connecting the Chairman and Delegate units to the Central unit
Step 1. Connect either the TS-773 or TS-774 Microphone to the TS-771 Chairman unit and TS-772 Delegate
unit.
Indicator
TS-773 or TS-774
Microphone
TS-771 Chairman unit or
TS-772 Delegate unit
Step 2. Connect the TS-771 Chairman unit and TS-772 Delegate unit to the TS-770 Central unit.
When installing, keep conference units 1.5 – 2 m away from each other. If distances exceed 2 m, use
YR-770-2M (2 m) or YR-770-10M (10 m) extension cables.
Up to 35 conference units can be connected per line (line 1 and 2) of the central unit.
Ensure that the total length of connection cables between the Central unit and the last conference unit
is less than 100 m.
TS-771 or TS-772 (Up to 35 units* per line)
Position the units
1.5 – 2 m away
from each other.
Line connection terminals
TS-770
Line connection terminal
YR-770-2M
Line connection terminal
YR-770-10M
100 m or less
* If the TS-775 Remote Delegate Interface unit is used, up to 35 units can be connected per line, including the TS-775.
21
Step 3. Connect an indicator or other device to the TS-771 Chairman unit's or TS-772 Delegate unit's Control
Output terminal as required.
Note
This output terminal is closed
("make" contact) when the
Remote Delegate Interface unit
is set to Speech mode.
TS-771/772
Tighten
Control output
terminal
Terminal screw
Cable*
* Conductor diameter:
ø0.4 – 1.3 mm (AWG 16 – 26),
solid or stranded
Step 4. Set the Test switch on the front panel of the Central unit to ON. (Test mode)
The Test indicator lights together with the conference unit's Microphone in-use indicator and the
indicator on the microphone.
Note that as the number of connected conference units increases, several seconds may elapse
before the indicators light.
When all indicators for the installed conference units light, this completes connection confirmation. In
this event, if the indicators of a certain conference unit do not light, check the connections of the
microphone and those between the Central unit and conference units.
Indicator: Lights
TS-770 Central unit
Microphone in-use indicator: Lights
Test indicator: Lights
CENTRAL UNIT TS-770
Test switch: ON
TS-771 Chairman unit or TS-772 Delegate unit
Step 5. Shift the Central unit's Test switch back to the OFF position. (Test mode cancelled.)
Note that as the number of connected conference units increases, several seconds may elapse
before the indicators extinguish.
22
10.3.2. Setting functions and adjusting Chairman and Delegate units sound output volume
Step 6. Set the number of simultaneously operable Delegate units using the Speaker Restriction switch on
the front panel of the Central unit.
For details, refer to p. 16.
TS-770 Central unit
CENTRAL UNIT TS-770
Speaker restriction switch
(Factory preset: 6)
Step 7. Adjust the sound volume of the Chairman and Delegate units.
Press the Talk key on both the Delegate unit in the number set in Step 4 and the Chairman unit to
turn on their microphone. Speaking into the microphone, adjust the volume to an appropriate level
using the Central unit's Line Volume control.
Indicator: Lights
Line volume control
TS-770
CENTRAL UNIT TS-770
TS-771 or TS-772
Indicator: Lights
Indicator: Extinguishes
Step 8. Confirm that no acoustic feedback is generated from any microphone to be used.
If acoustic feedback occurs, widen the distance between conference units or turn down the line
volume in order to prevent feedback.
Use an equalizer to ensure that no acoustic feedback is caused even if the sound volume is
increased. Connect the equalizer's input terminal to the Central unit's Equalizer Insertion Output
terminal and the equalizer's output terminal to the Central unit's Equalizer Insertion Input terminal,
then set the Central unit's Equalizer Insertion switch to ON. This allows all audio signals to be
controlled by the equalizer.
TS-770
Equalizer insertion switch
Equalizer
In
Out
23
Step 9. Set the Automatic Mic-Off function*, as required, using the Automatic Mic-Off setting switch on the
front panel of the Central unit.
* This function automatically turns off the microphone if not used for a specified period of time (see
page 17).
Microphone volume control
AUX volume control
TS-770
9
CENTRAL UNIT TS-770
Automatic mic-off setting switch
(Factory preset: OFF)
To a BGM player
To a wired microphone
10
Step 10. When using a wired microphone and background music (BGM) equipment, connect these
components to the Central unit and adjust their sound volume.
In the case of a wired microphone, connect it to the Central unit's front-mounted Mic Input jack and
adjust the volume to an appropriate level using the microphone volume control.
In the case of BGM equipment such as CD decks and cassette decks, connect to the Central unit's
front-mounted AUX Input jack and adjust the volume to an appropriate level using AUX input volume
control.
Step 11. When recording conference contents, connect the recording equipment's recording input terminal to
the Central unit's Recording Output terminal, or the chairman or Delegate unit's
Recording/Headphone output terminals.
For details, refer to p. 18.
TS-770
To recording equipment
24
11. IF USING MULTIPLE CENTRAL UNITS:
Up to 3 Central Units (up to 210 conference units) can be simultaneously used.
Note
The Speaker Restriction and Automatic Mic-Off functions will not be applied correctly if settings are performed
differently for each Central unit.
Step 1. Perform connections and adjustments for each Central unit.
Follow Steps 1 – 11 on pages 21 – 24 for each Central unit.
Step 2. Set the Central unit's rear-mounted Expansion switch.
Set the Expansion switch of one of the connected Central units to MAIN, and the remaining Central
units to EXPANSION.
To shift the switch position, loosen the lock screw for the Expansion switch and retighten the screw
after the position change has been completed.
TS-770 Central unit
Expansion switch
Lock screw
When set to MAIN
(Factory preset)
Lock screw
When set to EXPANSION
Step 3. Make connections between Central units.
Connect the Expansion IN-OUT terminals mutually between Central units, as shown below. Note that
the CTRL terminal of the Main Central unit must be connected directly to each CTRL terminal of the
Expansion Central unit(s) using a single line.
TS-770
(For the MAIN setting)
(For the MAIN setting)
Expansion IN/OUT terminals
TS-770
(For the EXPANSION setting)
(For the EXPANSION setting)
Expansion IN/OUT terminals
TS-770
(For the EXPANSION setting)
(For the EXPANSION setting)
Expansion IN/OUT terminals
Note
Because no cables are supplied for connection between Central units, please prepare separately.
25
Step 4. Set the Central unit's functions as follows:
• Speaker Restriction Switch
Only set the Speaker Restriction switch of the MAIN Central unit. (This setting takes effect
regardless of the switch settings of the other EXPANSION Central Units.)
• Automatic Mic-Off Setting Switch
Perform the same setting for all connected Central units.
12. WHEN HOLDING REMOTE CONFERENCES:
When holding a conference between remote locations, add the Remote Delegate Interface unit and use a
telephone or PC.
Step 1. Connect the Remote Delegate Interface unit to the Central unit. Connections are the same as those
used for other conference units (see page 21).
Line connection terminals
TS-771 or TS-772
TS-770
TS-775
Line connection terminal
TS-771 or TS-772
YR-770-2M
Line connection terminal
TS-775
Position the units 1.5 – 2 m
away from each other.
YR-770-10M
100 m or less
Note
A total of up to 35 Chairman, Delegate and Remote Delegate Interface units can be connected per Central unit
line connection terminal.
Step 2. Connect an indicator or other device to the Remote Delegate Interface unit's Control Output terminal
as required.
Tighten
TS-775
Note
This output terminal is closed ("make"
contact) when the Remote Delegate
Interface is set to Speech mode.
Control output terminal
Terminal screw
Cable*
26
* Conductor diameter:
ø0.4 – 1.3 mm (AWG 16 – 26),
solid or stranded
Step 3. Set the telephones or PCs in both the conference room and remote location to conversation mode
and connect the conference room telephone or PC to the Remote Delegate Interface unit.
3-1. If using the telephone:
Use a telephone equipped with a handset using modular connectors.
1) Set the telephones in both the conference room and the remote location to conversation mode.
2) Detach the modular plug from the handset, then connect the plug to the Remote Delegate Interface
unit.
TS-775 Remote delegate interface unit
[Conference room]
Modular jack
Handset modular connector
[Remote location]
Telephone body
PABX
C/O
Telephone handset
3-2. If using the PC's microphone input and headphone output:
1) Using Skype* or other IP telephone software, set the PCs in both the conference room and the
remote location to conversation mode.
2) Set the PC's microphone input and speaker output to allow conversations to be held between PCs
at an appropriate level.
3) Connect the PC's headphone output terminal to the Remote Delegate Interface unit's Microphone
Input terminal, and the Remote Delegate Interface unit's Speaker Output terminal to the PC's
microphone input terminal.
* Skype is a trademark of Skype Limited.
Skype is a toll-free IP telephone software program which allows conversations via the Internet.
For details, refer to http://www.skype.com/helloagain.html.
[Conference room]
TS-775
[Remote location]
Microphone input terminal
Headset
Speaker output terminal
Headphone
output terminal
Microphone input terminal
PC
PC
Internet
27
Step 4. Set the Central unit's Automatic Mic-Off setting switch to the OFF position.
TS-770 Central unit
CENTRAL UNIT TS-770
Automatic mic-off setting switch
(Factory preset: OFF)
Step 5. Set the Remote Delegate Interface unit's Auto/Manual Selector switch to the MANUAL position to
disable speech through the unit (the speech indicator extinguishes).
TS-775 Remote delegate interface unit
Handset Selector Switch
Speech Indicator
Speaker Output Volume Control
Microphone Input Volume Control
Talk Key
Auto/Manual Selector Switch
Step 6. Adjust the Speaker Output Volume control to enable the remote party to hear audio from the
Chairman and Delegate units clearly at their telephones or PCs.
Note
When using a telephone, if sound is not audible at all, change the position of the Handset Selector
switch (default position: A).
Step 7. Press the Talk key to enable the remote party to speak, then adjust the Microphone Input Volume
control so that the remote party's voice can be heard clearly from the Chairman and Delegate units
(the microphone indicator extinguishes).
Step 8. Set the Auto/Manual Selector switch to the AUTO position and perform fine adjustment of the
Microphone Input Volume control to allow conversation flows to be reversed correctly between the
conference room and the remote party.
28
13. BLOCK DIAGRAMS
13.1. TS-770 Central Unit
EQUALIZER
OUT
IN
REC OUT
EXT IN 1
EXT IN 2
REC OUT
EQ switch
+35 V
LINE
MIC
MIC
DIN
AUX
LINE 1
LINE 2
Number of speakers
EXT OUT 1
AUX
Chime
EXT OUT 2
Priority control
EXT CTRL 1
EXT CTRL 2
+35 V
-
Fuse
+
+24 V
Speech duration
Test control
Test/Microphone indicator
REG
+
Power indicator
13.2. TS-771 Chairman Unit
VR
CONTROL OUT
REC/PHONE 1
REC/PHONE 2
Bias
Microphone
TS-773
or
TS-774
+35 V
DIN
DC control
LED control
Microphone control
Speaker control
Priority key
Test control
Speech duration control
DC control
Priority control
Talk key
29
13.3. TS-772 Delegate Unit
VR
CONTROL OUT
REC/PHONE 1
REC/PHONE 2
Bias
Microphone
TS-773
or
TS-774
+35 V
DIN
DC control
LED control
Microphone control
Speaker control
Test control
Speech duration control
DC control
Number of speakers
Talk key
13.4. TS-775 Remote Delegate Interface Unit
OUTPUT
OUTPUT VR
INPUT
INPUT VR
To PC's
microphone input
Signal detection
CONTROL OUT
From PC's
headphone output
Signal detection
MODULAR
DIN
+35 V
DC control
LED control
Microphone control
Speaker control
Talk key
To telephone's handset modular connector
30
Test control
Speech duration control
DC control
Priority control
14. SPECIFICATIONS
14.1. TS-770 Central Unit
Power Source
Power Consumption
Input
Output
Equalizer Insertion
Terminals
Expansion IN/OUT
Terminals
Control
Number of Connectable
Conference Units
Operating Temperature
Operating Humidity
Finish
Dimensions
Weight
AC mains, 50/60 Hz
60 W
Microphone: –60 dB*, 600 Ω, unbalanced, phone jack
AUX:
–20 dB*, 600 Ω, unbalanced, phone jack
Recording: –20 dB*, 10 kΩ, unbalanced, phone jack, RCA jack x 2
Input: –20 dB*, 10 kΩ, RCA jack
Output: –20 dB*, 10 kΩ, RCA jack
Input: –20 dB*, 10 kΩ, unbalanced, RCA jack x 2
Output: –20 dB*, 10 kΩ, unbalanced, RCA jack x 2
Control: 10 kΩ, voltage output, RCA jack x 2
Priority Speech chime: A single-tone chime activated by TS-771's priority key
Speaker Restriction:
Number of simultaneously-usable TS-772/775s can
be set to 0, 1, 3, or 6
Automatic Mic-off:
Function OFF/20 s/40 s (selectable)
70 units (max. 35 units per line), max. 210 units when 3 Central units
connected
0°C to 40°C (32°F to 104°F)
Under 90 % RH (no condensation)
Pre-coated steel plate, black (30% glossy)
210 (w) x 107.1 (h) x 316 (d) mm (8.27" x 4.22" x 12.44")
4 kg (8.82 lb)
* 0 dB = 1 V
Note: The design and specifications are subject to change without notice for improvement.
• Accessories
Power cord (2 m) ........................................ 1
14.2. TS-771 Chairman Unit and TS-772 Delegate Unit
Power Source
Output
Control
Operating Temperature
Operating Humidity
Finish
Dimensions
Weight
35 V DC, under 30 mA (supplied from TS-770 Central unit)
Headphone/Recording: 32 Ω (headphone)/10 kΩ, –20 dB* (recording),
unbalanced, mini jack, equipped with a volume
control
Internal Speaker:
130 Ω, 200 mW
Contact output:
24 V DC, Max. 50 mA
Speech: Microphone and speaker on-off control by Talk key
Priority speech (TS-771 only):
Microphone and speaker on-off control, other microphone off, and
single-tone chime activation by Priority key
0°C to 40°C (32°F to 104°F)
Under 90 % RH (no condensation)
Case: ABS resin, black
Panel: ABS resin, gray metallic, 50 % glossy, paint
114.5 (w) x 78.4 (h) x 152.9 (d) mm (4.51" x 3.09" x 6.02")
560 g (1.23 lb)
* 0 dB = 1 V
Note: The design and specifications are subject to change without notice for improvement.
31
14.3. TS-773 and TS-774 Microphones
Model No.
Type
Directivity
Rated Impedance
Rated Sensitivity
LED Indicator
Frequency Response
Output Connector
Finish
Length
Weight
Applicable Unit (Option)
TS-773
TS-774
Electret condenser microphone
Unidirectional
1.8 kΩ
–37 dB (1 kHz, 0 dB = 1 v/Pa)
Speech Indicator (ring type)
100 – 13,000 Hz
Equivalent to XLR-4-32
Gooseneck: Stainless steel, black
Other:
ABS resin, black
368 mm (14.49")
518 mm (20.39")
90 g (3.17 oz)
105 g (3.7 oz)
TS-771 Chairman unit, TS-772 Delegate unit
Note: The design and specifications are subject to change without notice for improvement.
14.4. TS-775 Remote Delegate Interface Unit
Power Source
Input
Output
Speech Mode
Operating Temperature
Operating Humidity
Finish
Dimensions
Weight
35 V DC, under 30 mA (supplied from TS-770 Central unit)
–50 dB*, 200 Ω, balanced, mini jack, equipped with a volume control
–40 dB*, 22 Ω, balanced, mini jack, equipped with a volume control
Auto:
Voice-activated Automatic switching
Manual: Talk key on-off switching
0°C to 40°C (32°F to 104°F)
Under 90 % RH (no condensation)
Pre-coated steel plate, black
160 (w) x 41.8 (h) x 100 (d) mm (6.3" x 1.65" x 3.94") (excluding projection)
700 g (1.54 lb)
* 0 dB = 1 V
Note: The design and specifications are subject to change without notice for improvement.
14.5. YR-770-2M 2 m Extension Cord and YR-770-10M 10 m Extension Cord
Model No.
Connector
Length
YR-770-2M
YR-770-10M
DIN socket (8P, unit's rear-mounted connector side),
DIN plug (8P, unit's cord connector side)
2 m (78.74")
10 m (393.7")
Note: The design and specifications are subject to change without notice for improvement.
URL: http://www.toa.jp/
133-22-106-80