User's Manual

Safety Guidelines Hardware Installation Manual

2-6 Airspan Networks Ltd. 02030311-03

2.5. Cabling

This section defines the cabling procedures to be adopted during WipLL equipment

installations at both base station and subscriber premises.

Note: Prior to the commencement of any installation, commissioning work at

‘live’ sites it is the responsibility of the Airspan engineer to advise the

customers representative before any activity commences. If in doubt assume

equipment is ‘live’.

Warning: Disturbance of cables on an In-Service exchange can cause loss o

service. Extreme care must be taken when installing cables at any customer o

subscriber premises.

A summary of issues to be considered during cabling of WipLL base station and

customer premises equipment is as follows:

! Cable routes are to be defined in the site-specific documentation.

! Data and DC power cables running parallel to AC power cables shall be

separated by a minimum distance of 200 mm. However, it is permissible to

allow these cables to cross each other at right angles.

! Observe recommended minimum bend radii when installing copper cables.

Wherever a cable changes direction, ensure that it does so in a smooth curve

with a radius of at least 50mm in order to prevent damage.

! Plastic ties and wraps are to be used to secure cables to trays and guides. Ensure

all trimmed ends are disposed of safely and at regular intervals.

! Data cables of less than 20 pair shall be mixed in bundles not exceeding 50 mm

in diameter.

! Ensure cables are not trapped in cabinet doors, by slide-in equipment or support

metalwork.

! Excessive stress on cable terminations caused by taught cables should be

avoided. Connector strain relief, if not built into the connector used, shall be

provided by means of a strategically located cable tie.