TS-820 Conference System Central Unit Non Voting




The TS-820 is a Central Unit of the Infrared Conference System that allows easy installation and flexible layout. By connecting TS-905/907 IR Transmitter /Receiver, TS-820 can control the Chairman and Delegate Units via wireless infrared signal. It features the installation confirmation function that allows the connection status of IR Transmitter /Receiver and Chairman/Delegate Units to be verified. The TS-820 is also equipped with FBS (Feedback Suppression), enabling effective control of acoustic feedback. The system can be controlled by PC (*1)


( *1) Relevant control software is supplied on a custom-made basis.

Power Source 100 – 240 V AC, 50/60 Hz ( use of the supplied AC adapter)
Power Consumption 72 W
Current Consumption Max. 3 A DC ( when 24 V DC is supplied from the accessory AC adapter)
 Carrier Frequency Reception: 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
Transmission: Audio channel: 1.95 MHz
 Input MIC  -60 dB ( *2) , 600 Ω, unbalanced, ¢6.3 mm phone jack ( 2P)
AUX -20 dB (*2) , 10 kΩ, unbalanced, ¢6.3 mm phone jack (2P)
 Output LINE: -10 dB (*2), 1: 0 kΩ, unbalanced, ¢6.3 mm phone jack (2P)
REC: -10 dB ( *2 ), 10 kΩ, unbalanced, RCA pin jack
HEADPHONES: ¢3.5 mm mini jack ( 3P: monaural)
 Equalizer Input/Output Input: -20 dB ( *2 ), 10 kΩ, unbalanced, RCA pin jack
Output: -20 dB ( *2 ), 10 kΩ, unbalanced, RCA pin jack
 Number of Connectable Chairman/Deleqate Units 64 units
 Number of Connectable Infrared Transmitter /Receiver Units Up to 4 units ( with the use of distributor, up to 16 units connectable
when they are all TS-905, and up to 12 units when they are all TS-907, or TS-905 and TS-907 are used in combination)
 Infrared Transmitter /Receiver I/0 Terminal BNC jacks
 External Control Connection Terminal D-sub connector (9P, male)/USB-B selectable
 LED Indicator Audio signal receiving indicators 1 – 4 CH, Data signal receiving indicator,
External control priority indicator, External control communication indicator,
Battery indicator ( flashes when a Chairman/Delegate unit’s battery nears complete discharqe ), Short-circuit indicator
 Function Switch Number of open microphones setting switch: 1 /2/3/ 4
Mic-off setting switch: TIME OUT ON/OFF
Speech priority selector switch:
FIRST ( First-in-first-out priority)
LATEST ( Last-in-first-out priority)
FIRST: FIXED NEXT: LATEST (Priority fixed for the first unit, and last-in-                     first-out priority for all other subsequent units.)
 Operatinq Temperature 0 °c to +40 °c (32 °F to 104 °F
 Operatinq Humidity 90 %RH or less ( no condensation)
 Finish Panel: Surface-treated steel plate, black, 30 % qloss, paint
 Weiqht 2.7 kq (5.95 lb)
 Accessory AC adapter (Cord length: 1.8 m (5.91 ft) DC cord, and 2 m (6.56 ft) detachable
AC cord)( *3) ··1
 Option Rack mounting bracket: MB-TS920

(*2) 0 dB = 1
(*3) Not supplied with the TS-820( -CN). For the usable power supply cord and AC adapter, contact your nearest
TOA dealer.