1ch Active UTP CCTV Video Receiver (VB300R)

Product Detail

1ch Active UTP CCTV Video Receiver / Active Video Balun VB300R

Description:
The VB300R 1ch active UTP video receiver receives balanced signal to convert it into unbalanced signal and raises the received signal with perfect receiving effect, which can be applied in the occasions such as video monitoring and video meeting. It can simplify the wiring project and save wire use quantity.

Features:
1. Adopt differential signal transmission with excellent anti-jamming ability
2. 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 signal
3. The farthest transmission distance will be 900m if it is used with passive transceiver and the farthest transmission distance can reach 1200m if it is used with active transmitter
4. Outstanding interference rejection, transient protection
5. "Press-Fit" terminal block
6. Two video outputs for DVR and LCD
7. ABS plastic case

Technical specifications:

1ch Active UTP CCTV Video Receiver (Active Video Balun VB300R)
Video Format		NTSC, PAL, and SECAM
Frequency Response		DC to 5MHz
Attenuation		0.5dB typ
CMRR		60 dB
Impedance	Coax, Male BNC	75 ohms
	RJ45/Terminal Block	100 ohms
Working environment	Working Temperature	-10? to +70?
	Storage Temperature	-30? to +70?
	Humidity	0 to 95%
Wire Type		UTP5
Connector		2*Male BNC and "Press-Fit" terminal blocks
Power		12VDC
Case		Metal

Type 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:100O±20O
DC loop resistance: 18O/100m
Differential capacitance: 62pf/m (maximum)

Connection method:
Connect the two-color wires of a pair of Cat-5 unshielded twisted pair wire to the ‘+’ terminal of the green socket and connect the single-color wires to the ‘-’ terminal of the green socket. Connect the BNC interface of the transmitter to the BNC interface of the camera. If there is any joint in the circuit, please adopt welding method or special junction box to ensure perfect contact at the joint.

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 Questions
Why 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 does 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 telephones, Ethernet, low voltage power, RS-422, RS-485, etc.

Application Diagram