System Overview

VISSONIC VLI series Digital Infrared Language Distribution System, also known as Digital Infrared Simultaneous Interpretation System, is a system used in multi-language meetings. In order to help the participants understand the conference content, the system transmits the speech of the mother tongue to the receiver and headphones in the hands of the participants. Infrared is used as the transmission medium, and the principle of direct light and diffuse reflection is used to achieve signal coverage of the venue. Participants can move around freely without affecting listening. Therefore, they are widely used in large, medium and small Press conference hall, academic lecture hall, school auditorium, various international conference sites, etc.

System Features

VISSONIC VLI series Digital Infrared Language Distribution System has the following features

● Comply with international IEC 61603-7 and IEC 60914 standards
This standard determines whether the infrared system can be used in Europe, national large-scale conferences, Europe as early as 2011 no longer use analog equipment that does not meet the standard
● Compatible with other infrared simultaneous interpretation systems conforming to the IEC 61603-7 standard, and can be cross-used
Whether the system conforms to the standard, the most intuitive way to verify capital is whether it is compatible with other manufacturers’ receivers and transmitters that conform to the standard. Yilang not only meets the standard, but also verifies that it can be cross-mixed with BOSCH, TELEVIC, TAIDEN infrared systems, and Has been delivered to relevant international users.
● All-digital DQPSK digital modulation/demodulation technology guarantees sound quality and gives an excellent listening experience
The use of DQPSK digital modulation is a requirement of the IEC 61603-7 standard, and most analog systems use FM modulation.
● Audio data is transmitted in the 2~8 MHz frequency band, providing up to 32 voice channel options
Advanced modulation technology enables the system to support more language channels, and can support 32 language channels
● Sunlight, anti-glare, fluorescent light, LED light and other light sources interference
The super anti-interference ability makes the infrared receiver adapt to various venues, even the open-air venue during the day, a large number of LED screen venues, and LED lighting venues are not affected.
● With beautiful ergonomic receiver design
● The friendly LCD interface displays the current language name, current channel, signal strength, battery power, volume and other information
● The industry’s unique arc-shaped large-angle, ultra-long-distance radiation panel, covering a distance of 76 meters, is a powerful signal coverage tool for large-scale venues of thousands of square meters
● With AUDIO-LINK network interface and VISSONIC CLEACON series conference system to achieve seamless integration
● Open DANTE network interface, can be connected to DANTE audio network

VISSONIC IR Wireless Language Distribution System (IR interpretation system) enables multiple translated languages to be transmitted via infrared to delegates throughout a conference facility. The system is available in from 4 to 32 channels, each channel distributing a separate language. The system can be used independently or combined with VISSONIC Conference Systems, providing a total solution for any facility.

System Diagram

These ergonomically designed pocket receivers incorporate the latest electronics technology. VIS-VLI703A series IR receivers, which can receive up to 32 language channels and is equipped with channel selector, volume control, power switch, Ø 3.5 mm stereo earphone jack. A LCD displays channel number with language name, received signal intensity, battery capacity and volume. The pocket receivers can be used for both language and music distribution.

VIS-VLI703A Digital Infrared Receivers for translation

● What's more, it can use VISSONIC rechargeable battery pack or regular AA battery for using freely.
● 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
● Optional lithium rechargeable battery pack or 2x AA battery
● 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
 

VIS-INT64 is 64 channels interpreter desk that enables direct and relay interpretation available in 63+1 languages to provide an easy and relax time during interpretation work.

VIS-INT64 64 Channels Interpreter Desk

Accommodates up to 64 interpretation channels (incl. floor channel)
Digital audio technology, built-in high-speed DSP processing.
Supporting 48 kHz audio sampling rate, 30 Hz to 20 kHz frequency response on all 64 channels
Anti-interference by any RF signal with metal housing design.
Hot plug and play, Removable microphone design
The volume of Loudspeaker and earphone jack support separated adjustment.
Direct and relay interpretation available
Hearing protection direct and relay interpretation available
Interpreter unit can be set as operation unit and all interpreter units support Internal communication with operator unit
Language and system configuration from the interpreter desk’s configuration menu
Short message and tea service function
COUGH key to mute the MIC to avoid the unnecessary sound to the output
Two Interpreter dual user
The speaker and the headset’s volume should be regulated alone. If all microphones in the same booth are off, the loudspeaker will play floor language or interpretation channel
Support the headset microphone and pluggable microphone.
Channel interlock function permits only one microphone on a channel to be activated at any time, ensuring the uniqueness of language channels
Two necessary modes within one interpreter booth: Interlock and Override
A-B pre-select input key to quickly select Input channel
The timing function for indicating the interpretation time.
 

Controls and Indicators

Microphone mounted on a flexible stem, complete with a light ring
Headphone volume controls knob
Speaker volume controls knob
A-B channel selector key for the quickly select the Input(interpreter hearing) language
IN Select Knob with LCD indicating channel for fast switching between the original floor language and the channel set on the channel selector
OUT Select Knob with LCD indicating channel for fast switching between the output channels
Microphone activating key with LED status indicator
Microphone ‘COUGH’ key to mute the MIC while pressing
FLOOR-RELAY key to fast switch between floor language and relay language
Call key (voice) to provide two-way communication between interpreter and operator
 

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.

VIS-VLI700A Digital Infrared Transmitter

Compliant to IEC 61603-7 and IEC 60914
Compatible with any other IR simultaneous interpretation system compliant to IEC 61603-7
DQPSK digital modulation/demodulation technology
Transmitting in 2~8 MHz frequency band eliminates disturbance from high frequency lighting systems
Capable of distributing of 4,8 or 16 audio channels
Auxiliary mode for distribution of music to all channels during a break
Slave mode for distribution of signals from another transmitter allows multiple rooms to be used
Radiator and system status indication via display and indicators
Each transmitter can be assigned a unique name by the installer for easy identification in a multi-transmitter system
Automatic distribution of emergency messages to all channels
Automatic synchronization to the number of channels in use by the CLEACON system
Each audio channel can be assigned a language name for easy identification
Adjustable sensitivity for each input to enable fine tuning of audio levels, support levels indicating of audio input
Flexible configuration of channels and channel quality modes: Mono, standard quality, maximum 16 channels Mono, perfect quality, maximum 8 channels Stereo, standard quality, maximum 8 channels Stereo, perfect quality, maximum 4 channel
With 16 interpretation output channels for recording
Universal mains power facility allows worldwide use
Conference hall privacy; the congress venue itself acts as a barrier to infrared signals escaping and being overheard, as infrared is unable to pass through opaque objects such as walls
Suitable for various kinds (small/medium/large international) of conference halls and outdoor venues
Support the interpreter unit connection directly(by optional firmware VIS-VLI700-FW)
Support 16 channel analogue audio input and 16 channels analogue audio output.
Support 2 transmitters can work as master and slaver mode for 32 channel language distribution
Support optional Dante port for connecting to Dante network
 

These radiators are used to distribute infrared signals throughout the conference space, enabling delegates to listen to the proceedings by means of personal pocket receivers.

VIS-VLI701A Digital Infrared Radiator

Compliant to IEC 61603-7 and IEC 60914
Compatible with any other IR system compliant to IEC 61603-7
Maximum radiation range up to 76 meters.
Cable delay compensation for differences in cable lengths between transmitter and radiators
Half-power / full-power the operating mode can be selected with a switch
Synchronization on/off with transmitter
Connection to connect further radiators in a daisy chain
Radiation angle ± 25°
When the temperature of the radiator is too high, the system will automatically switch from full power to half power.
For the use in conference rooms, even in daylight
 

VIS-TC50A is used to charging and storing the VIS-VLI703A series receivers

VIS-TC50A Charger and Storage box for Infrared Receiver

Can accommodate VIS-VLI703A series receivers
Universal mains power facility allows use worldwide
Rapid recharging: within 2 hours
Capable of charging 50 receivers.
The charging box also has the function of storing receiver

Controls and Indicators
Charging status indicators for every receiver
Interconnection
Mains input with loop-through facility;
male and female Euro mains socket
50 charging contacts and compatible with VIS-VLI703A series pocket receivers

Technical Specifications
Electrical
Power: 100V-240V AC
Max. Power: 150W
Static Power: 17W（no charging）
Mechanical
Dimension (mm): 230x600x380
Weight: 5kg
Color: Black
 

VIS-HPD head phone for delegates

VIS-HPD head phone for delegates

Overview

The VIS-HPD is high quality headset for chairman/delegate to listen the sound from unit directly.
 

Features

● To monitor conference units. 
● To free from influence in conference system. 
● With1.5m cable. 
● Hi-fi quality.
 

Technical parameters

Unit Interface Dual Channel Plug
Frequency Response 80Hz – 2KHz
Sensitivity 90dB
Signal to noise ratio > 80dB
Distortion < 0.1dB
Impedance 32 &Omega;
Dynamic range > 85 dB
Output power 100mW
 

VIS-HPI head phone for interpreter

VIS-HPI head phone for interpreter

Overview

The VIS-HPI is high quality headset for interpreter to translate, there is MIC input.
 

Features

● The shape is agile and fine, make the user feeling more comfortable.
● Listen and speak in the conference.
● Avoid being interfered in conference.
● 40mm advanced speaker.
● Build-in 2.2meter cable.
● Hi-fi audio quality.
● 32 &Omega;，3.5mm monophonic plug.

Technical Parameters

Unit Interface Dual Channel Plug
Frequency Response 80Hz &ndash; 2KHz
Sensitivity 90dB
Signal to noise ratio > 80dB
Distortion < 0.1dB
Impedance 32 &Omega;
Dynamic range > 85 dB
Output power 100mW