WDC-903 Wireless Conference Discussion System

WDC-903 digital wireless conference discussion system, with professional appearance design, perfect circuit composition and stable functional characteristics, can be cooperated with VTS-2000 automatic video tracking system and central control system to achieve functional diversification of modern high-tech conference. The data instruction of this wireless conference discussion system is transmitted by LoRa protocol. Audio works in UHF band. High fidelity circuit design can produce high quality sound effect. The system has anti-interference protection, which can effectively block the influence of computers, mobile phones and Bluetooth wireless devices in the environment. It is fully applicable to local government departments, business conference rooms, business venues and international conference centers.

Practical function
· Adopt LoRa 433Mhz wireless control signal and UHF audio transmission technology.
· The system automatically searches interference-free channels and replaces them.
· Control up to 255 Wireless Discussion units, up to 5 wireless units can speak at the same time.
· With Dante interface, it can communicate with any device with Dante to transmit audio.
· Bright OLED operation screen, with Chinese and English language menu selection, perfect function, easy operation.
· Super anti-interference function can effectively block the impact of computer devices, mobile phones and Bluetooth devices in the environment.
· The conference unit can automatically select or manually start the power supply. When it chooses to turn on automatically, the central controller will send the instruction to the conference unit at the same time, which automatically turns on the power supply and works in the mode after receiving the instruction.

Flexible Speech
Four conference modes:
①Time-limited Mode
②First in First out Mode
③Application Mode
④Voice-activated Mode

Expansibility
· With antenna interface, it can be used in conjunction with the antenna system of Relacart, and the transmission signal is very strong.
· Any number of wireless conference systems can be installed in the same building.
· With VTS-2000 automatic video tracking system, can achieve conference video tracking function.
· Equipped with RS-232 interface, it can connect various central control devices.

Easy installation
· The unique advantages of simple installation, easy and fast, and no impact on the installation site, especially for the installation or layout of historical museums, ancient buildings and other historical and cultural buildings, users need not worry about damage to ancient buildings, because they do not need wiring, nor drilling holes, providing a professional perfect solution for harsh and complex application occasions.
 

Main Controller Specification


WDC-903 Main Controller
Basic functions of the Main Controller:

•Adopt LoRa 433Mhz wireless control signal and UHF audio transmission technology.
•The system automatically searches interference-free channels and replaces them.
•Control up to 100 Wireless Discussion units, 2 chairman units and up to 5 wireless units to speak at the same time.
•With Dante interface, it can communicate with any device with Dante to transmit audio.
•Four conference modes, first in first out, limited time speech, application speech and voice-activated speech, are available to meet different conference needs.
•Bright OLED operation screen, with Chinese and English language menu selection, perfect function, easy operation.
•Super anti-interference function can effectively block the impact of computer devices, mobile phones and Bluetooth devices in the environment.
•With antenna interface, it can be used in conjunction with the antenna system of Relacart, and the transmission signal is very strong.
•Any number of wireless conference systems can be installed in the same building.
•19-inch (1U) body for desktop or rack mounting.
•A temporary system can be easily built, beautiful and tidy, without any impact on the installation site.
•With VTS-2000 automatic video tracking system, can achieve conference video tracking function.
•Equipped with RS-232 interface, it can connect various central control devices.

Main Frame Size 1U
Receiving Channel Six Channels
Frequency Reliability ±0.005%
Carrier Frequency Range UHF 522MHz-936MHz
Sampling Rate 48KHz /24bit
Modulation FM
Operating Distance 80M (in open space)
Oscillation PLL synthesized
Bandwidth 32MHz
Max. Deviation ±45KHz
 S/N >100dB
THD <0.5%@1KHz
Frequency Response 50Hz-18KHz
Output Balanced XLR-M, 2 RCA
Power Supply AC110-240V 50/60Hz
Weight  Approximately 3.2 kg
Dimension(mm) 480(L)X43(H)X350(D)

 

 Conference Delegate Specification


WDC-903C Chairman Unit     WDC-903D Delegate Unit

Basic functions of the Conference Delegate:

•It is powered by detachable lithium battery, charged by WDC-903 special charging box, or charged directly by USB interface of conference unit.
•It can work continuously for 16 hours and stand by for up to 24 hours at full power.
•Bright OLED display can display battery capacity, speech mode, time limit and other working conditions at the same time.
•Super anti-interference ability of mobile phone.
• With a halo-type work indicator.
•Use high-quality capacitive condenser microphone head to achieve high-quality sound pickup.
•Wireless conference technology can easily build a temporary system, beautiful and neat, without any impact on the installation site.

Carrier Frequency Range 522MHz-936MHz
Oscillation PLL synthesized
Harmonic Radiation <45dBm
Bandwidth 134MHz
Max. Deviation ±45KHz
Input Jack 3-pin XLR jack
RF Output Power: 15mW
Power Supply Li-ion polymer rechargeable battery  3.7V/2900mA
Current Consumption 120 mA (Typical)  60mA (Standby)
Working Hour: 23 Hour(Classical)  48 Hour(Standby)
Weight 910g
Dimension(mm) 162(L)X125(W)X54(H) 



DC-903 data communication converter

Working Frequency Range: 400~450MHz
Gain 16dBm
RF input Port N female
Data Communication Bidirectional Connection Port RJ45 connector
Power The integrated power supply mode of data line and power line
Working Temperature -10℃~55℃
Dimension(mm) 42(W)×42(D)×105(H)
Weight 150g

 


VTS-2000 Automatic Video Tracking System

VTS-2000 Video Tracking System can be used in conjunction with any conference system with video function of Relacart to realize video viewing tracking function. When the speaker unit opens the microphone, the camera will automatically track the speaker's position, and connect the video display device to display the image. Unique picture static function, can achieve perfect automatic tracking image function.

Equipment Type HD Video Main Controller
Working Power AC 100~240V, 50/60Hz
FrequencyResponse 143Mb/s to 2.97Gb/s
Gain 0dB
Signal Type SDI(HD digital signal) HD cctv1.0
HD-SDI(ST292)、3G-SDI(ST424)、SD-SDI(259)
Input Return Loss 21dB@5MHz-3GHz
Video Input 800mVp-p
Video Output 800mVp-p
Compatible Standard Pelco-D、pelco-P、Visca
Control Protocol RS-232、RS-422、RS-485
Baud Rate 9600
Data Bits 8 Bits
Video Input/Output Impedance 75Ω
Input/Output Port BNC
Dimension(mm) 410(W)*43(H)*206(D)
Weight Approximately2.3 kg


R-14D UHF Wideband 4-channel Antenna Divider
Specifications:
Frequency Range :500 – 950 MHz 
Gain of Output :0 dB±1dB 
Input Impedance :50Ω 
Output Impedance: 50Ω 
Power Supply of Antenna Input :+8V DC 
Power Supply of Receiver Each antenna input port supplies bias: +12V DC, 150mA max. 
Current Drain :800mA 
Power Supply :100—240V, AC 50/60 Hz 
Dimension (mm): 410(W) X 43(H) X 206 (D) 
Weight :2.5KG 


R-32AU  Wide-band Directional Antenna
Technical Parameters:
Antenna frequency range:    480MHz~950 MHz 
Amplifier frequency range:    480MHz~950 MHZ 
Antenna directionality:  Cardioid 
Antenna polarization mode    线性line 
Antenna gain:    ≥6.5dB 
Antenna standing wave ration:  <2 
Amplifier gain:    0 to15dB 
Amplifier low noise    <0.45dB 
 Amplifier OIP3     >38dBm 
External power supply:    6-12VDC 
Current:    75mA 
Connector port: BNC female  
Dimensions (mm):     approx. 332(L) x 304(W)  x 3 (T) 
Weight:     about 715g 


R-22AU Wide-band Directional Antenna
Carrier Frequency Range :450-660MHz(EK),640-950MHz(DG) 
Gain of Output :6dBi 
Connector :BNC Female 
Dimensions (mm) :245(H) X 236(W) X 31(D) 
Weight :220g 


R-20U UHF Wide-band Directional Antenna
Frequency Range: 450MHz~950 MHZ 
Gain :7dBi 
Impedance: 50 Ω 
Horizontal flap width: 80 ° 
Vertical flap width :60 ° 
Polarization: Vertical 
VSWR: ≤ 2.0 :1 
Connector: BNC 
Dimensions (mm): 210(H) X 180(W) X 44(D) 
Weight :300g 
 

R-43W bar antenna
Technical specification
Frequency range: 400MHz~950MHz
2000MHz~2500MHz
Gain: 9dB
Standing Wave Rations: ≤2
Input impedance: 50 Ω
Connector type: N-type male
Dimensions (mm): φ36.5 x 376
Net weight: approximately 220g
 

Communication with Relacart Wireless Audio Engineer

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