Single Channel Active Power-Video-Data Transmitter Balun

Single Channel Active Power-Video-Data Transmitter and Receiver (VB303T&RH(P)) 

Single Channel Active Power-Video-Data Transmitter and Receiver (VB303T&RH(P)) 

Features:

l Adopt differential signal transmission with excellent anti-jamming ability

l Save project cable expenses, it can complete the transmission of video, power supply and control signals on this line only with one Cat-5 unshielded twisted pair wire

l It can provide stable DC 12V power supply for the headend camera or other electro-equipments only to provide a DC 36V power supply at the receiving terminal (master control room) in the whole transmission system without providing another power supply for the camera and other DC 12V electro-equipments and realize remote power supply.

l Built-in transient suppression protection

l The farthest transmission distance can reach 1500m when VB303R is used with VB303T (this series shall be in matched use and shall not be used with other types of transmitter)

The transmission distance has relation with the total power of the camera and other headend equipments, for the details, please refer to the following table:

Technical specifications:

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: 100Ω±20Ω

DC loop resistance: 18Ω/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. Connect the BNC interface of the receiver to the monitor or other recording equipments. If there is any joint in the circuit, please adopt welding method or special junction box to ensure perfect contact at the joint. Please be sure to connect the interface marked with ‘’ symbol to the ground wire of the lighting-proof system with the copper conductor with sectional area≥1.5 mm²!

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?