Single - Quad Baluns - Active
Baluns - Ground Loop Isolators
Video Technology for high resolution CCTV video
& excellent immunity against interference.
Exico Connectors range of Baluns (Coaxial to Cat 5 Converters) which allows video to
be transmitted over twisted pair Cat 5 cable with virtually little or no
interference. Unlike coaxial cable, twisted pair cable is a balanced
transmission medium and therefore any interfering signal source that is present
at the installation site will be introduced to both wires of the twisted pair cable
and will effectively be cancelled out due to the high Common Mode Rejection performance of
Exico's video balun.
Benefits of Cat 5 Cabling
over Coaxial Cabling include:
Savings on installation
costs particularly over medium to long distances because Cat 5 cable
is about 30% cheaper. Typical savings for single coax (camera)
installation is ~ 15% and for 4 camera installation is ~ 65%.
With 4 pairs of cable
provided by Cat 5 and only one pair is used for video transmission,
the extra pairs can be used for either feeding power down the line to
the camera and/or used for PTZ control functions for camera using RS422
or RS485 protocol.
The Cat 5 cabling can be
used for new technology IP cameras should this be required in the
future.
To make installation even easier using Cat 5 cabling Exico Connector has a video balun with Insulation
Displacement (IDC) or Krone type interface which facilitates quick installation without wasting time in having to terminate the cable onto an
RJ45 connector or in the case of coax cabling BNC connector.
HOW TO SAVE TIME AND MONEY WITH YOUR CCTV CABLING INSTALLATIONS
Traditionally,
coaxial cables such as RG59 are used for connecting the CCTV camera video
to the DVR but now it is possible through use of Exico's Passive Video
Balun (Coax to Cat 5 Converter) to replace the more expensive coaxial
cable with Cat 5 cable for this purpose. This application is shown in
Figure 1 below.
Coaxial Cabling Installation Method
Cat 5 CablingInstallation Method
The common types of baluns that
are used are either with RJ45 Jack or with Quick Connect Insulation
Displacement Connector (IDC). Figure 2 below shows 3 BNC Male types that are
most commonly used by CCTV installers. Other coaxial interface types that
are available include BNC Female and Type F Male or Female.
Figure 2
BNC Male RJ45 Standard Case
BNC Male RJ45 Slim Case
BNC Male RJ45 Slim Case
With distances between the Camera and DVR of up
to 450 metres it is not too difficult to see the cost savings that would be
achieved by switching from existing coaxial cabling to Cat 5
Single Camera Cost Savings using Cat 5 Cable
An example of the typical savings that can be achieved over say 400 metres is provided in Table 1 below.
Assumptions: Cost of RG59 per metre: A$0.50 and Cat 5e A$0.35 per metre
Cable
Type
Cost of Cable
Cost of Converter
Cost of Connector
Total Cost
RG59
$200.00
$ 0.00
$2.00
$202.00
Cat 5e
$140.00
$30.00
$0.00
$170.00
Savings 1 Camera
$ 30.00
Table 1
Other Advantages of Using Cat 5 cable
Cat 5 cable offers 4 pairs of cable of which
only 1 pair is required for video leaving 3 additional pairs for either
power for the camera and data for controlling the PTZ functions of the
camera which uses RS 485 protocol. This type of Balun is shown in Figure 3
below.
Figure 3
Video, Power and Data Balun P/N E10522
Multi-Camera Application
Where multi cameras are involved in an installation, use of Exico's Quad Balun
will achieve even greater cost savings when the Cat 5 cable is used as a
backbone cable - See Figure 4 below
Multi Camera Cost Savings using Cat 5 Cable
An example of the typical savings that can be achieved for
4 cameras over say 305 metres is provided in Table 2 below.
Assumptions: Cost of RG59 per metre: A$0.50 and Cat 5e
A$0.35 per metre
Cable
Type
Cost of Cable
Cost of Converter
Cost of Connector
Total Cost
RG59
$610.00
$ 0.00
$8.00
$618.00
Cat 5e
$106.75
$70.00
$16.00
$192.75
Savings 1 Camera
$425.25
Table 2
SUMMARY
Significant cost savings up to 65% can be achieved by
using Cat 5 cabling instead of Coaxial cabling and where the Cat 5 cable is
used in a single camera application there are additional benefits of spare
cable pairs which can be used for powering the camera and for PTZ control.
