ACCESSORIES GUIDE
WIRING
Cables are used to connect a camera to a power supply and the DVR, some cameras have the option of audio which will also require a cable.
In order to transmit the picture signal to the DVR a camera is connected to the machine using a type of coax cable called RG59 or RG6 this is similar to, BUT NOT THE SAME AS, coax cable used to connect a television to an aerial. The cable connects to both the camera and the DVR using BNC plugs.
Power is provided to the camera via two core power cable, the connectors used are dependent on the connections provided with the cameras and the terminals at the power supply.
Audio cable, if required, is usually of simple lightweight two core cable but can be a separate RG59 or RG6 cable from the CCTV cable.
RG59 coaxial cable will start to suffer signal loss when it is pulled more than 100 meter, whereas with RG6 signal loss will only occur with cable more than 200meter.
For long distant video transmission Smart Cabling UTP Balun is required. A pair of Balun is required for every deployment of a CCTV camera. CAT5 network cable is used to connect the Balun instead of coaxial cable. One CAT5 network cable (4 twisted pair) can be used for 4 video transmission (4 cameras).
A pair of passive Balun can transmit video signal up to 500 meter. A passive and a active pair of Balun transmits video signal up to 1KM whereas up to 1.5KM for a pair of active Balun.
POWER SUPPLY
Sufficient Ampere is required to supply power to camera. IR camera normally will require more Ampere while the IR LEDs are turned on.
Uninterrupted Power Supply (UPS) is required for both the DVR and the cameras for high risk area deployment. Both the power consumption of the DVR and cameras and the Wattage of the UPS will determine the operating duration of the cctv system during power black out.
Power Surge Protector is a must for deployment at unstable power supply and lightning strikes inclined area. A variety of surge protectors for video, power and data transmission are available.
MONITOR
Monitors can be provided in one of 3 types:
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CCTV Monitors, also called "Professional" monitors, these are connected to the DVR via a BNC connector and come in the "standard" metal cased type in sizes of 14 or 21 inch or LCD flat screen type in sizes of 15, 17 or 21 inch. The monitor can on for 24/7.
Television Monitors - televisions can be used as monitors and connect to the system via a scart or AV plug most DVR's allow this type of connection but if this is your choice of monitor check that both the monitor and DVR are compatible.
Standard Monitors - usually used as "computer" monitors these connect to the system via a VGA lead, as a computer connection. Please note that not all DVR's allow for this type of connection so you must check that the DVR has a VGA monitor connector.
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