HY-4200M Full Digital Infrared Transmitter

· All-digital infrared audio processing chip technology.
· IEC 61603-7 standard.
· Compatible and cross-usable with IEC 61603-7 international standard infrared language distribution systems.
· Can directly output audio signals to mixing consoles, amplifiers, recording and other audio equipment.


Huain Infrared Simultaneous Interpretation System, using infrared transmission for language distribution, which is highly respected for its superb confidentiality, is the most advanced transmission method of infrared simultaneous interpreting system on the market at present, and is suitable for all kinds of small, medium and large conference rooms and outdoor venues with high requirements for confidentiality.


· 2-8MHz frequency band, not subject to external interference such as high-frequency drive light source.
· 2″ LCD color display, Chinese and English menu selectable.
· Four high-frequency signal output interface (BNC) for serial or parallel connection of infrared radiators.
· Digital DQPSK modulation technology, high spectrum utilization, good characteristics, strong anti-degradation.
· Combined mode, can form 2N channel system.
· Cable transmission delay compensation setting function, to ensure that the emitted signals are synchronized and superimposed.
· Fidelity lossless audio transmission technology, frequency response of 20Hz-20KHz, signal-to-noise ratio greater than 90dB.
· Digital locking confidentiality function, to eliminate external interference and eavesdropping.
· With test function, can produce a variety of frequency sound, convenient for system installation and debugging.
· Built-in small infrared emitter for audio monitoring.
· LED status indication function, showing the status of connected devices.
· Three working modes: normal mode, emergency mode, leisure mode.
· 1 way interpreter desk or digital conference unit interface, can connect 32 interpreter desks or conference units.
· Customized numbering function to avoid ID duplication.
· Adjustable volume for each channel, 32 levels of volume adjustment.
· 1 RS-232 control interface, can be connected to a computer to set the function.
· Built-in perpetual calendar, dynamic display of the current time.



Menu language
Chinese and English(customized)
carrier frequency
Audio processing
frequency response
Distortion degree
Signal to noise ratio
>90 dB
Translation desk interface


Application Cases

The HUAIN global conference program serves 30+ countries and regions, and has been successfully applied in large-scale conferences such as China International Fair for Import and Export and Hongqiao International Economic Forum, Davos Forum, World Intelligence Congress, Latin American Entrepreneurs Summit Conference, China-Russia Media Forum, World Military Games, and so on.

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