Passive Baluns are used in Pairs one at each end
of Twisted Pair NO POWER REQUIRED
Suitable
for 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 signals:
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.
Baluns or
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 wiring.
Different devices may be used at each end of Twisted Pair.
An
Active 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
Supply
for
In-Line Rectifier/Regulator.
Technical
Information: Ask for our 'Balun Link List' a very useful resource
for general Balun information,
e-mail 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
AV-Amp or
Vid-Amp/4 for long runs, acceptable results may be possible with
unshielded Cat-5/6 Cable and
TWIST-AMP.
Twisted
Pairs 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 signals.
In-Line
Regulator-Rectifiers
Input: AC or DC Output: 12 VDC Regulated. Ideal for long power cable
runs where voltage drop due to cable resistance is a problem.
REG-12VDC *
REG-12VDC+ *
Rect-Reg *
Rect-Reg+
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)
