VISSONIC ELECTRONICS LIMITED
VISSONIC ELECTRONICS LIMITED WWW.VISSONIC.COM Digital DSP Conference system manufacturer
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Digital IR Receivers with 4/8/16/32 Channel
VISSONIC Translation Receivers Battery removable VIS-VLI703A
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
Digital IR Receivers with 4/8/16/32 Channel
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
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