VIS-VLI703A
Black with Silver
Ø 3.5 mm
>80 dB
270º
3V to 4.2V, Nominal 3.7 V
Simultaneous Interpretation System
Without Video
Lcd Display
Wireless
Sector
VISSONIC
Carton Paper Box
159 x 49 x 23 mm
China
8517629900
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
