Vissonic VIS-VLI703A Series: Digital infrared receiver series
Model VIS-VLI703A Series
Overview
Ergonomic pocket receivers designed to receive up to 32 language channels in infrared simultaneous interpretation systems.
Equipped with a channel selector, volume control, power switch, LCD display, and 3.5 mm headphone output.
Their DQPSK digital modulation in the 2–8 MHz band ensures immunity to interference from modern lighting systems.
Can operate on standard AA batteries or a rechargeable lithium pack, making them suitable for both permanent installations and rental use.
Technical specifications
Models · Vis-vli703a-4 · Channels
4
Models · Vis-vli703a-4 · Description
4-channel digital infrared receiver, optional rechargeable lithium battery or 2 AA batteries.
Models · Vis-vli703a-8 · Channels
8
Models · Vis-vli703a-8 · Description
8-channel digital infrared receiver, optional rechargeable lithium battery or 2 AA batteries.
Models · Vis-vli703a-16 · Channels
16
Models · Vis-vli703a-16 · Description
16-channel digital infrared receiver, optional rechargeable lithium battery or 2 AA batteries.
Models · Vis-vli703a-32 · Channels
32
Models · Vis-vli703a-32 · Description
32-channel digital infrared receiver, optional rechargeable lithium battery or 2 AA batteries.
Standards
Compliant with IEC 61603-7, IEC 60914, and national standard GB 50524-2010.
Compatibility
Compatible with any infrared simultaneous interpretation system compliant with IEC 61603-7.
Modulation
DQPSK digital modulation/demodulation technology in the 2–8 MHz band to avoid interference from high-frequency lighting.
Channel Selection
Channel selector via up/down buttons; only active channels in the system are displayed.
Display
LCD display showing language channel number, received signal level, battery status/capacity, and volume level.
Headphone Output
3.5 mm jack connector for headphones, supported impedance approximately 32 Ω to 2 kΩ.
Maximum SNR
Signal-to-noise ratio greater than 80 dBA.
Power Supply
Voltage between 3 V and 4.2 V, nominal value 3.7 V (lithium pack) or 2 AA batteries.
Battery Life
With rechargeable battery, typical battery life approximately 24 hours of operation.
Power Saving Functions
Automatic shutdown of receivers not connected or without signal to save energy.
Dimensions
Approximately 159 x 49 x 23 mm (H x W x D).
Weight
≈ 85 g without battery, ≈ 128 g with battery.
Color
Black with silver accents.
Use
Language distribution and also music/ambient sound during breaks or events.
Key features
- Compliance with IEC 61603-7 and IEC 60914, and compatibility with other IR systems adhering to these standards.
- Up to 32 language channels, with clear display of the selected channel and signal level on the LCD screen.
- Lightweight and comfortable pocket design, with a typical battery life of a full working day and energy-saving functions.
- Standard 3.5 mm headphone output compatible with a wide range of headsets and earphones.
- Ideal for multilingual conferences, parliaments, convention centres, guided tours, and educational applications.
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