GONSIN TL-VB4000 digital conference system offers a multi-functional integrated conferencing solution that combines microphone management, delegate discussion, digital voting, attendee registration, chairman priority, LCD display, chipcard reading, video switching, camera tracking, digital recording and software control.

The basic system on one central control unit supports up to 70 delegate units and can be expanded to 200 units with additional extension units.  Multiple control units can be cascaded together to support up to 1000 delegate units.

      Main features:

• Dual-shielded cable for interference resistance
• Multiple selectable microphone modes
• Multiple voting types and options
• Superior high fidelity audio quality
• Automatic camera control is supported
• All circuit boards in anti-corrosive, moisture-proof design

     The system functions with PC/software control

• Centralized microphone management
• Operator control over delegate request-to-speak list
• Chairperson unit can be active at any time
• Simultaneous active delegate microphones from 1 to 4
• Chairperson can override/mute all the active delegate units
• Delegate speaking time limit can be preset or controlled by operator
• Attendance registration by inserting IC card or pushing MIC button
• Two registration modes - dynamic and countdown
• LCD display of conference and user-related information
• Up to 4 dome cameras can be supported to track the speaking delegate
• Hard disk drive (HDD) digital recording via PC/software
• Different voting types and options:
•    Parliamentary voting, ordinary election, multi-choice: YES/NO/ABST
•    Quick election: 1/2/3/4/5
• Dynamic voting mode or countdown voting mode
• First keypress valid mode or last keypress valid mode
• Voting procedures & results display on terminal LCD and hall screen
• Three microphone modes are available for delegate discussion:

•       Request to Speak - allows to set the number of simultaneous active delegate microphones from 1 to 4. The delegate microphone cannot be activated until a registered request is allowed by the operatot or chairperson.
        Wait to Speak � the first delegate to push the MIC button gets the floor and the other delegates have to wait in queue.  Only one delegate is allowed to speak at one time.
        Free to Speak � the first 4 delegates who request to speak can push to talk freely. The next one cannot be active until the last one is turned off.

     The system runs without operator/software control

• Simple push-to-speak operation
• Chairperson unit can be active at any time
• Simultaneous active delegate microphones from 1 to 4
• Chairperson can override/mute all the active delegate units
• LCD display of conference and user-related information
• Up to 4 dome cameras can be supported to track the speaking delegate
• Three selectable microphone modes are available for delegate discussion:      
•       OPEN - allows to select the number of delegate microphones from 1 to 4 which can be simultaneously active.  The delegate microphones more than the preset number cannot be activated and are unable to register a request to speak.
        FIFO - allows to select the number of delegate microphones from 1 to 4 which can be simultaneously active.  On a FIFO (first in first out) basis, any delegate can override another delegate simply by activating the microphone, but cannot override the chairperson.
        OPERATOR - allows to select the number of delegate microphones from 1 to 4 which can be simultaneously active.  Up to 8 delegates more than the preset number can register a request and wait to speak, and can be switched off manually to cancel the request.

TL-VDB4000  Delegate Unit

• Push button switch for MIC ON/OFF
• 1-5 numkeys for voting & attendance registration
• Red ring luminant to identify live unit
• Unidirectional electret condenser microphone
• Built-in chipcard reader for user identification
• Back-lit LCD screen for dynamic status display
• Dual 3.5mm headphone jacks with level control
• Automatic gain control (AGC) to prevent acoustic feedback
• Auto turned off when no speech detected for 30 seconds
• Supports automatic video camera tracking
• Frequency response: 50-18K Hz
• S/N ratio at 1mV input level: -95dB
• Sensibility: -46�4dB
• Power input: 24VDC
• Microphone stem length: 41cm
• ABS base dimensions: 150x135x50 mm (LWH)
• Dual-shielded captive cable length: 50cm
• Portable or fixed tabletop mounting

TL-VXB4000 Chairman Unit

• Push button for MIC ON/OFF
• Priority button to override/mute all active delegate units
• 1-5 numkeys for voting & attendance registration
• Unidirectional electret condenser microphone
• Red ring luminant to identify live unit
• Built-in chipcard reader for user identification
• Back-lit LCD screen for dynamic status display
• Dual 3.5mm headphone jacks with level control
• Automatic gain control (AGC) to prevent acoustic feedback
• Auto turned off when no speech detected for 30 seconds
• Supports automatic video camera tracking
• Frequency response: 50-18K Hz
• Sensibility: -46�4dB
• Power input: 24VDC
• Microphone stem length: 41cm
• ABS base dimensions: 150x135x50 mm (LxHxD)
• Dual-shielded captive cable length: 50cm
• Portable or fixed tabletop mounting

TL-ZB1  Central Control Unit

• Provides DC power to all contribution units
• Master, treble, bass volume level control
• 3 microphone modes can be selected on the front panel
• Simultaneous active delegate units can be preset from 1-4
• FSC function to prevent acoustic feedback
• Connects contribution units in up to 4 lines
• 8-pin DIN connector for additional extension unit
• RS 232 port for computer control
• RS 485 port for dome camera control
• Built-in automatic video matrix switcher
• 4 x video input sockets & 2 x video output sockets
• 4 x RCA audio outputs for external sound equipment
• Power requirement: 110/220VAC, 50-60Hz
• Max. power: 300W
• Frequency response: 20Hz-18kHz
• S/N ratio at 1mV input level: -95dB
• Distortion at 1kHz: < 0.3%
• 19" rack-mount case

 System Configuration Diagram