Digibell Vandal Resistant System Guide d'installation télécharger pdf (Page 12)

Digibell Vandal Resistant System

PD-169 Issue 3B Installation Guide Page 12 of 56

Cable requirements

All system wiring must be carried out using CAT5 data cable except were otherwise

specified. CAT5 is necessary as it has a guaranteed noise performance and meets the

requirements of the EMC directive.

Flex or ‘Twin and Earth’ (1.0mm

min.) is specified for 12V power connections etc ( see

table below).

Bell System will be unable to offer any warranty or support for systems installed using

incorrect cables.

Cat5 Cable Specification

Cat5 is our short reference for EIA standard UTP Category 5 Unshielded Twisted Pair data

cable. This is a standard 0.5mm diameter 0.2mm² solid core twisted pair cable having 4

pairs (8–cores) and no shield. The cores are in pairs where Blue and ‘Blue with a White

stripe’ are twisted together as the first pair. The other three pairs are similar with main

colours Orange, Green and Brown.

• Also available and acceptable are:

UTP Category 5e (Cat5e)

UTP Category 6 (CAT6)

UTP Category 6e (CAT6e)

The exact cable can be chosen from the above on cost and availability grounds.

• UTP CAT5 Patch cable is normally more expensive, but is suitable.

• STP (Shielded Twisted Pair) cables are not recommended.

NOTE: Cat5 cable is easily identifiable as the specification is printed on the sheath.

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Digibell Vandal Resistant System Guide d'installation Page 12