Digital IR Language Distribution System Infrared Receivers for Both Language and Music Distribution

Product Description

Digital IR Language Distribution System Infrared Receivers for both Language and Music Distribution
Feature
Compliant to IEC 61603-7 and IEC 60914 Compatible with any other IR simultaneous interpretation system compliant to IEC 61603-7 Digital infrared processor with DQPSK digital modulation/demodulation technology Transmitting in 2~8 MHz frequency band eliminates disturbance from high frequency lighting systems Channel selection via up/down button, at most 4,8,16 or 32 channels available LCD display with channel number, language name, battery and signal status indication Number of available channels is always the same as the number of channels in use by the system, eliminating the need to scroll through unused channels Adjustable volume Unique 270º super wide reception angle, ensuring perfect sound quality even when casually placed Audio signal automatically muted when signal is too low, ensuring that the user receives only high quality audio. Ergonomically compact and elegant design Lightweight and handy receiver in conjunction with single earphone or headphone for easy and comfortable use Can be hung over the neck via a nice strap or fit into the shirt pocket Freedom of movement within the range of IR power radiator No limit to the receiver number within the IR power radiation range Works without errors, even in bright sunlight Built-in high precision rechargeable circuitry to prolong battery life Environmentally-friendly lithium rechargeable battery pack No power consumption and auto-off when headphone is disconnected after 5 minutes
Controls and Indicators
LCD displays channel number, language name, battery capacity, signal intensity and volume Power switch
Channel selector buttons
Volume control buttons
Interconnections
Ø 3.5 mm stereo earphone jack
Charging contacts
Technical Specifications
System Specifications
Modulation...............DQPSK, according to IEC 61603-7 Modulation frequency
Carriers 0 to 5...............2 to 6 MHz, according to IEC 61603-7
Frequency response...............20 Hz to 10 kHz (-3dB) at standard quality;
20 Hz to 20 kHz (-3dB) at perfect quality
THD at 1 KHz ...............<0.05%
Isolation...............>80 dB
Dynamic range...............>80 dB
Weighted SNR...............>80 dBA
Input range...............-12 dBV ~ +12 dBV (adjustable)
Electrical
IR irradiance level...............4 mW/m2 per carrier
Angle of sensitivity...............270º
Headphone output level at 2.4 V 450 mVrms (speech at maximum volume, 32 Ohm headphone)
Headphone output freq. range...............20 Hz to 20 kHz
Headphone output impedance...............32 Ohm to 2 kOhm
Max. SNR...............>80 dBA
Supply voltage...............3V to 4.2V,nominal 3.7 V
Headphone jack unplugged after 5 minutes...............0 mA Battery life
Rechargeable battery pack ...............24 hours
Mechanical
Dimensions (H x W x D) ...............159 x 49 x 23 mm
Weight............... excluding battery 85 g
including battery 128g (0.27 lb)
Color...............black with silver
Application