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8BMaintenance
XX183-01-02 Rev 808 S10-CH Camera Dome System
Twisted-Pair Cable
Caution: Careful selection of proper cable is essential to obtain the best performance. Vicon assumes no responsibility for poor
performance when cables other than the recommended types, or equivalent, are used.
Materials
Use a pure copper stranded conductor with or without a tin-plating to obtain a low DC resistance. Do not use cable with
either steel or aluminum stranded conductor because they do not transfer signals effectively for long distances. The
preferred insulation and cable jacket is Polyvinyl chloride (PVC). It has better electrical characteristics than polyethylene
and resists flames, sunlight and most solvents, but is more vulnerable to moisture.
Cable Types
The most commonly used cable types are single individually-shielded, twisted pair. This configuration is the most
convenient for RS-422/ RS-485 applications.
Choose a cable type by referring to the characteristics and maximum distances listed below. The maximum distance for
the most reliable digital control refers to the distance between the CPU/Keypad and the Camera Dome Assembly. The
characteristics of the cable in the table below should be used as a guideline when cables other than Belden are used.
Materials and construction must follow the guidelines above.
Cable Type
Wire Size
(AWG)
Insulation
Material
Jacket
Material
Distance ft (m)
max.
Number of
Twisted Pairs
Belden 9182
22
Datalene
¹
PVC 25,000
(7600) 1
¹
Datalene is a Registered Trademark of Belden.
Belden Inc.
http://www.belden.com/ (800)
235-3361
Recommended Individually-Shielded, Twisted-Pair Cable Types