interconnecting Cameras / Switchers / Quads / Multiplexers / Monitors /
Digital Video Recorders / PC based DVRs / VGA RGB YUV RGBHV S-Video Y/C
YCbCr YPbPr Audio Signals / etc / etc.
Use Flexible -
Low-Cost - Small-Diameter Category-5 or Category-6 100 ohm impedance
Unshielded Twisted-Pair (UTP) Local-Area-Network (LAN) cable or common TP
120 ohm Telephone cable to transmit unbalanced 75 ohm Composite Video
Up to 600
metres (monochrome) and up to 300 metres (colour) using Passive Baluns
with high quality unshielded Cat-5/6 LAN cable.
Up to 2 400
metres (monochrome) and up to 1 500 metres (colour) using Active
Amplifiers with high quality unshielded Cat-5/6 LAN cable.
Active Amplifiers may save hundreds of dollars on coax cable and labour
and ensure that you get-the-job! Use in Residential Units, Universities,
Offices, Hospitals, Showrooms, Elevators, for Covert Surveillance. Utilise
unused spare pairs that may be available in existing LAN or Telephone
devices may be used at each end of Twisted Pair.
Amplified Transmitter or Receiver may be used with a passive device to
extend the transmission distance.
Single-Cable-Solution 600 + metres use spare pair(s) for Power Supplyfor
Information: Ask for our 'Balun Link List' a very useful resource for
general Balun information,
your request with your Balun purchase Invoice Number.
PC DVRs & other
Digital Video Recording systems: We recommend use of high quality Cat-5/6
cable, if runs exceed 250 ~ 300 metres use
TWIST-AMP for better results.
To ensure best
possible image contrast and brightness in Low-Light conditions we
recommended High-Quality Low-Loss Coaxial Cable and
Vid-Amp/4 for long runs, acceptable results may be possible with
unshielded Cat-5/6 Cable and
may be paralleled to extend the transmission distance of Video Signals
however any gain will be a trade-off as paralleled pairs lower immunity to
common-mode interference and increase attenuation of high frequency
Input: AC or DC Output: 12 VDC Regulated. Ideal for long power cable runs
where voltage drop due to cable resistance is a problem.
Cable resistance, Cable length and Current drawn by Camera affect voltage
drop which can be reduced by using thicker gauge wire and/or paralleling
pairs. A test using 24 AWG Cat-5 Cable, a 24 vac Power Supply,
REG-12VDC In-Line Rectifier-Regulator and a Camera that draws 100
milliamps demonstrated that lengths of 600 + metres is practical, 2 pairs
in parallel would increase this to 1 200 + metres.
A single 24
AWG (0.5 mm diameter) conductor has a resistance of ~ 9.4 ohms per 100
metres, voltage drop will be ~ 1 volt per 50 metres of Cat-5 Twisted Pair
when powering a Camera that draws 100 milliamps. (calculation: 9.4 ohms x
0.1 amps = 0.94 Volts)