4 Channel Simultaneous Interpretation System/infrared languages system

This is simultaneous translating system is popular with most of customers in oversea; it is designed by the latest technology,

4 Channel Simultaneous Translating  System

Transmission main unit 

SI-H7104

SI-H7104 Digital Transmitter is the central modulator unit in the digital infrared system. It accepts audio from the SI-H7104 or other compatible audio sources. The SI-H7104 modulates the incoming audio signals onto carrier waves, which are sent directly to one or more SI-T7204 Digital Infrared Radiators. The output from the radiator is then passed on to each SI-R7404 delegate receiver.

1. High security, prevent external interference

2. Suitable for different conference hall

3. Automatic level control function (ALC)

4. No disturb under daylight lamp

5. Easy to operate and save in project cost

6. With the most advanced technology

7. Elegant configuration in accordance to ergonomics

8. Input channel direct function

9. Has 4CH interpreter's voice for record

10. Self-test function, 4 kinds of testing voices for system test

11. PB test and display function  

12. Installed in a 19-inch frame

Modulation mode:	FM
Frequency synthesis	Digital PLL
Frequency band	1.7 - 4.0MHz
Frequency response	100Hz-14 kHz
Frequency stability	10ppm
Pre-emphasis	75 µSec
Distortion at 1 kHz	<0.5%
Channel separation	>70dB
RF output power level	700mV
RF output impedance	50 ohms
Input impedance	18k ohms
Max. Input power level	2V
AGC range	30dB
S/N ratio	>75dB
Power consumption	40W
Operating voltage	230V/50Hz

IR Transmitter

SI-T7204 

1. Radiates & distributes up to 4 channels of audio signal

2 Auto switched on/off by carrier signals’ from transmission main unit

3. Auto gain control to ensure diodes with max, efficiency

4. Convection cooled for noiseless, reliable operation

5. Mounted on celling, wall, floor, stand or optional tripod

6. Easily daisy-chained together to expand coverage

7. Half radiator angle: ±22 °

Interpreter unit

SI-I7304

1. Design by the latest technology

2. Work with headset earphone

3.4CH simultaneous interpretation

4. Easy to operate, just with a single press

5. IR Transmit main unit could connect 4 interpreter's units

6. Voice adjustable and with prevention on feedback

7.Ensure that every channel is correspondent to the reply function respectively, In case the interpreter couldn't understand the speaker's language, he could switch to other channel to listen another interpreter's voice and then interpreter it.

8. Delegates speak too fast; give a request for slow the speed.

9. Automatic numbering on system units

10. Prevention on interpreter's cough

IR Receiver

SI-R7404

1. Pocket size wireless handheld unit

2. Accommodates up to 4 different languages

3. Channel selector and headphone connector

4. Power on/off switch and volume level control

5. Powered by 2 X AAA alkaline batteries

6. Aluminum carrying cases provided for receivers

4 Channel Simultaneous Interpretation System/infrared languages system