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GONSIN TC-904/906/908/912 infrared simultaneous interpretation system is designed to offer 4-ch, 6-ch, 8-ch, 12-ch language ditribution for simultaneous interpretation using the advanced infrared light transmission technology.
As the central element of the system, the infrared transmitter interfaces with either analog or digital conference system, connects interpreter consoles and infrared radiators which transmit audio signals to wireless multi-channel receivers for the delegates to hear the language of their choice via personal earphones.
Operating in the higher 2 to 6 MHz frequency band, the system is immune to distortion from hall lighting and free from radio interferences, ideally suited for use in business and government conferences, international conventions and other multilingual applications.
Typical Applications
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★ Convention centres |
★ Parliament chambers |
★ Courtrooms |
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★ Boardrooms |
★ Council chambers |
★ Classrooms |
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★ Auditoriums |
★ Theatres |
★ Houses of Worship |
IR Transmitter 
The TC-Z904B/Z906B/Z908/Z912 infrared transmitter is a microprocessor based central unit which is designed to modulate and transmit 4, 6, 8, 12 audio channels to different carrier frequencies. It features independent channel volume control, independent channel output level indicators, and independent channel audio output for sound recording. Test mode produces a different frequency tone for each input/channel. Two BNC sockets can link up infrared radiators in two lines. Multiple interpreter consoles can be connected to the transmitter in a daisy chain.
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Modulation mode: FM
Frequency synthesis: digital PLL
Frequency band: 2.0 - 6.0MHz
Frequency response: 100-14kHz
Frequency stability: 10ppm
Pre-emphasis: 75 μSec.
Peak deviation: ±7.5kHz
Distortion at 1 kHz: <0.5%
Channel separation: >70dB
RF output power level: 700mV |
RF output impedance: 55-75 ohms
Input impedance: 18k ohms
Max. input power level: 7.5V
AGC range: 30dB
S/N ratio: >75dB
Power consumption: 40W
Powe requirement: 110/240VAC, 50-60Hz
19" rack mountable case
Dimension: 430×99×325 mm (W×H×D)
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IR Radiator
The TC-H15/TC-H25 high-power infrared radiator can be switchable to 50% low power, making it suitable for use in larger halls and smaller rooms. The radiator’s integrated power supply unit is automatically switched on and off by the carrier signals from the transmitter by means of an high frequency sensor. The radiator is equipped with automatic gain control to ensure the infrared diodes function with maximum efficiency, and is naturally convection cooled for totally silent and maintenance-free continuous operation. It can be ceiling or wall mounted for permanent installation, or set up on an optional tripod for portable application.Multiple radiators can easily be daisy-chained together to expand coverage. The unit is easy to maintain and clean, with IR emitting diodes protected by the cover plate.
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Frequency band: 2.0 - 6.0 MHz
IR output power: 15W / 25W
Switchable output level: Low/High
Coverage range: up to 40 meters
Angle of half intensity: ±22°
RF output impedance: 55-75 ohms |
RF input voltage: 100-2000mV
Power consumption: 55W, Stand-by 8W
Power Supply: 110/240VAC, 50-60Hz
Operating temperature: 0℃-40℃
Cable: 75Ω-4 coax, BNC connectors
Dimensions: 450×211×82 mm |
IR Receiver 
The portable TC-J904B/J906B infrared receiver is designed to receive 4 or 6 audio channels. The optical lens offers a wider receiving angle to pick up the infrared light signal. The delegate may listen to any selected language on a headphone/earphone. Volume level can be adjusted through the volume control for comfortable listening. Any number of receivers can be used within the radiator’s effective coverage range.
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Modulation mode: FM
Frequency synthesis: digital PLL
Frequency band: 2.0 - 6.0MHz
Frequency response: 100-14kHz
De-emphasis: 75 μSec.
Peak deviation: ±7.5kHz
Distortion at 1 kHz: <1%
S/N ratio: >55dB |
Frequency stability: 10ppm
Operating voltage: 2.3V-3.6V
Power consumption: 50mW
Slide switch for channel selection
Switch for power on/off & volume control
3.5mm earphone output jack
Battery type: 2 x AAA alkaline or rechargeable
Pocket clip and lanyard for easy-wearing
Dimensions: 140×58×30 mm (HxWxD) |
IR Receiver
The portable TC-J904LB/J906LB/J908L/J912L infrared receiver is designed to receive 4, 6, 8, 12 audio channels. The unit is powered by a more environment-friendly rechargeable Lithium-ion battery pack. The selected channel number and battery level can be displayed on LCD screen. The user may listen to any selected language on a personal earphone. Volume level can be adjusted through a thumbwheel switch for comfortable listening. Any number of receivers can be used within the radiator’s effective coverage range.
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Slide switch for power on/off
Thumbwheel switch for volume control
3.5mm phone output jack
Up/down push buttons for channel selection
LCD shows channel number & battery level
Pocket clip and lanyard for easy-wearing
Battery: 3.7V rechargeable Lithium-ion
Integrated charging electronics & contacts
Modulation mode: FM
Frequency synthesis: digital PLL |
Frequency range: 2.0 - 6.0MHz
Frequency response: 100-14kHz
De-emphasis: 75 μSec.
Peak deviation: ±7.5kHz
Distortion at 1 kHz: <1%
S/N ratio: >55dB
Channel separation: >55dBA
Frequency stability: 10ppm
Power consumption: 50mW
Dimensions: 133×57×23 mm |
Clip-on Headphone TC-D1 
- Type: dynamic 40mm
- Single swivel clip-on hanger
- Impedance: 40 ohms ±10%
- Sensitivity: 102dB SPL/1mW
- Frequency response: 7Hz to 24KHz
- 120cm cord with 3.5mm plug
- Full range enhance system
- Super bass frequency technology
Stereo Headphone TC-D3
- Ergonomic design
- Super heavy bass
- Frequency response: 20 Hz - 20 kHz
- Impedance: 32 ohms ±15%
- Sensitivity: 94dB ±3dB
- Maximum power input: 30mW
- Adjustable headband & soft earcups
- 40mm drivers for dynamic stereo sound
- 120cm single entry cord with 3.5mm plug
Charging Case GX-20 
- Microprocessor-based unit w/ smart charging circuit
- Accommodates up to 20 receiver units with Li-ion battery
- DC 5V low voltage charging power
- LED indicator for charging status
- About 10 hours needed to fully recharge 20 receivers
- Receivers can be left in the case after the charge is complete
- AC/DC adaptor w/ power cord
- Power input AC100/240V 50-60Hz, output DC5V 8A
- Dimensions: 59x30x18 cm (WXDXH)
Storage Case GX-48
- Handy locking aluminium/plastic suitcase
- Designed for carrying/storage of receiver units
- 48 positions with pre-cut foam
- Dimensions: 50×33×20 cm (WxDxH)
System Configuration Diagram
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