TS-921 Chairman Unit



TS-921   Chairman Unit

The TS-921 is a Chairman unit of the Infrared Conference system. Since the system is cordless, it can be easily installed and removed. The Chairman unit features a priority speech key which allows it to take precedence over the TS-922 Delegate units when speaking. It can be operated on either the AD-0910 AC adapter or the BP-920, BP-900A lithium-ion battery. It is equipped with a remaining battery indicator. Two types of dedicated microphones are made available for the TS-921 as optional products: the TS-923, TS-903 standard type and the TS-924, TS-904 long type.

Power Source Supplied from optional lithium-ion battery or AC adapter

Current Consumption Max. 390 mA

Infrared Emitter / Detector

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


Base language channel: 1.95 MHz

Translation language channel: 2.25 MHz

Covering Range 7 m (22.97 ft) radius

Input Microphone terminal: XLR-4-31 type

Output Monitor speaker: 8 Ω, 0.2 W

Headphone: φ3.5 mm mini Jack (3P:monaural) × 2

LED Indicator Speech indicator, Voting status indicators 1 -3, Power indicator

Function Monitor volume control, Headphone volume control, Priority speech function,

Voting function, Monitor selector switch (MAIN/SUB)

Battery Life Approx. 10 hours

Operating Temperature 0 ℃ to +40 ℃ (32 F to 104 F)

Operating Humidity 90 %RH or less (no condensation)

Finish Case: PC resin, black

Speaker Net: Steel plate, Black, matte finish, paint

Dimensions 205.7 (W) × 70.3 (H) × 164.2 (D) mm (8.1″ × 2.77″ × 6.46″)

Weight 525 g (1.16 lb)

Option Microphone: TS-923, TS-903, TS-924, TS-904 (Select either one.)

Lithium-ion Battery: BP-920, BP-900A

AC adapter: AD-0910




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