4 Channel/ 8 Channel /16 Channel /32 Channel Digital Infrared Transmitter wireless interpretation system

The transmitter is the central element in the language distribution system. It accepts analogue or digital input, modulates these signals onto carrier waves and transmits these carrier waves to radiators located in the room.


Order information
VIS-VLI700A-4 4 Channels Digital Infrared Transmitter
VIS-VLI700A-8 8 Channels Digital Infrared Transmitter
VIS-VLI700A-16 16 Channels Digital Infrared Transmitter

Main Features

In accordance with IEC 61603-7 and IEC 60914.

With the digital DQPSK modulation technology.

High-speed DSP processing.

The high frequency (2-6MHz, IEC61603 BAND Iv), is not affected by the high frequency driving light interference.
Input level indication function, controller front panel LED lamp can display the input state of the corresponding channel.

With 16 channel external audio input.

With 16 audio outputs, can be used to monitor or connect cassette recording.

With 4 signal output interface (BNC), is used for connecting the radiation panel.

The power input is 100V-240V, 50-60Hz. It has to undergo a high voltage (3500V) test, to ensure compliance with safety standards.

The controller shell made of metal materials, line and the shell strengthened with wire connection, ensure the capability of anti-static 8000V.

Controls and Indicators
Graphic LCD with back-lighting displays status and menu of the system configuration, supporting multi language menu
Four buttons for configuration
Channel active indicators

Interconnections

2 female XLR connectors for external audio inputs to connect auxiliary balanced audio signals such as music, floor language or emergency audio signal
16 audio signal output connectors (phoenix sockets) for output multi-channel audio
16 audio signal input connectors (phoenix sockets) to connect external unbalanced audio input signals
6 BNC connectors for output HF signal to radiator. To each connector, up to 30 radiators can be connected
1 BNC connector for receiving HF signal from another transmitter
Audio-Link Port for connecting to Interpreter Unit(optional firmware VIS-VLI700-FW) or VIS-DCP2000 or VIS-DCP1000 Congress Main Unit
DANTE port for connecting to Dante network for the digital audio(Optional VIS-DANTE module)
Ethernet and RS232 ports for connection to computer
Emergency signal interface: when the public emergency system is active, alarm signal can be fed to all channels automatically
Power supply socket

Technical Specifications
System Specifications

Modulation...............DQPSK, according to IEC 61603-7
Modulation frequency...............2 to 8 MHz 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...............>90 dB
Weighted SNR...............>85 dBA

Electrical
Unbalanced audio inputs...............-12 dBV to +12 dBV nominal
Balanced audio inputs...............-6 dBV to +18 dBV nominal
Emergency switch connector ............... 2-PIN 3.81 mm
Phoenix connector, alarm signal control input
Headphone output...............32 Ohm to 2 kOhm
HF input/output...............75 Ohm
Power supply...............AC 100 V - 240 V, 50 Hz / 60 Hz
Power consumption...............Maximum 25 W

Mechanical
Mounting............... Brackets for 19" rack mounting or fixing to a table top; detachable feet for free-standing use on a table top
Dimensions h x w x d (mm) ...............88 × 483 × 266
Weight...............7.5 kg
Color...............Black