8ch Active UTP Video Receiver (VB801R)
8ch Active UTP Video Balun Receiver / CCTV Accessories (VB801R)Description:The VB801R active video receiver receives balanced signal to convert it into unbalanced signal and raises the received signal with perfect receiving effect,Website:, which can be applied for the occasions such as video monitoring and video meeting and can transmit four channels of video image simultaneously via a 8-core Cat-5 twisted pair wire. It can simplify the wiring project and save wire use quantity.Features:1. Adopt differential signal transmission with excellent anti-jamming ability2. Save project wire expenses, each a pair of twisted pair wire transmits one channel of video signal and one common Cat-5 unshielded twisted pair wire can simultaneously transmit four channels of video signal3. The farthest transmission distance will be 1500m if it is used with passive transceiver and the farthest transmission distance can reach 2400m if it is used with active transmitter 4. Outstanding interference rejection, transient protectionTechnical specifications:8ch Active UTP Video Balun Receiver / CCTV Accessories (VB801R)Video FormatNTSC, PAL, and SECAM Frequency ResponseDC to 8MHzAttenuation0.5dB typCMRR60 dB ImpedanceCoax, Male BNC75 ohms Terminal Block100 ohmsWorking environmentWorking Temperature-10℃ to +50℃ Storage Temperature-30℃ to +70℃Humidity 0 to 95%Wire TypeUTP5UTP ConnectionFemale BNC, RJ45PowerAC90-260VCaseAluminum alloy caseDimension430mm*182mm*44mmWeight 55g/pairType of the required wire:Unshielded Cat-5 or above twisted pair wire (Please use standard Cat-5 or above twisted pair wire. The wire quality will directly affect the transmitted image effect and transmission distance.)Characteristic impedance: 100Ω±20ΩDC loop resistance: 18Ω/100mDifferential capacitance: 62pf/m (Maximum)Connection method:Clamp the modular plug for a Cat-5 unshielded twisted pair wire according to the connection order of TIA/EIA-568B (please refer to the following figure) and connect the clamped modular plugs to the RJ45 socket .If there is any joint in the circuit, please adopt welding method or special junction box to ensure perfect contact at the joint. Connect the BNC interface of the receiver to the monitor or other recording equipments.The clamping order of the modular plug is shown as follows (TIA/EIA-568B):Adjusting method:Adjust "BRIGHTNESS" knob to adjust the image brightness, then adjust "SHARPNESS" dial switch to compensate the image sharpness and color. The compensation size in turn is 1 as minimum and 4 as maximum. Pressing dial switch shows the compensation of this position is turned on. Next or multiple switches can be pressed according to the requirements. The four dial switches can compose 16 compensation values (as shown in the following figure) to meet the requirements of different transmission distances.Frequently Asked QuestionsWhy does my video look like a scrambled Cable TV signal?This typically indicates reversed polarity. Can shielded twisted pair be used?Some customers have successfully used shielded wire up to a few hundred feet. However we do not recommend it. Its high-frequency roll-off will severely degrade the distance performance. Can Category 6 wire be used?Yes. Unshielded Twisted Pair wire, Category 5 or better, can be used with UTP video transceiver.Can I transmit more than one video signal in a multi-pair wire bundle?Yes. One of the benefits of using UTP video transceivers is interference rejection. UTP video signals can reside in the same wire bundle as multiple video signals, ringing teles, Ethernet, low voltage power, RS-422, RS-485, etc.Application Diagram
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