Power Distribution - Nokia NME-2A Series Installation Instructions Manual

NME–2A
Installation Instructions
After drilling the hole for the antenna remember to clean the hole from the
drilling swarf, so that surface is even. This is needed in order to ensure
proper and reliable connection between the ground plane and the
antenna. After cleaning it is advised to apply some rust–proofing
compound to the hole.
Mount the base of the antenna tightly in position. Consult the antennas
manual for determining the maximum bending angle before attempting
any bending operation.
To avoid drilling a hole in the vehicle's bodywork, a glass–mounted
antenna can be chosen and located on the rear window of the vehicle.
Try to route the antenna cable so that possible sources of disturbances
are avoided, as well anti–skid brake systems. The shorter the antenna
cable, the smaller the attenuation, and the better the performance of the
antenna. The antenna coupler should always be connected to the antenna
via a non–radiating cable (e.g. coax).
Most of the antennas today have adapted the mini–crimp connector
system which eliminates the need for special crimping tools and
connectors. If however the purchased antenna has traditional connectors,
use only proper connectors and tools. The phone uses mini a UHF female
type antenna connector for reasons of reliability and attenuation.
All installations should take into account any special requirements of the
customer. However, should the customer require an installation that is
illegal or unsafe these facts must be pointed out to the customer and a
policy of non–compliance adopted.

Power Distribution

The main supply for mobile phone is obtained from the vehicle battery, the
supply voltage may vary between 11 and 16 volts. Both the positive
voltage and the grounding are taken directly from the battery, unless the
vehicle has other main voltage than +12 V. This minimizes the risk of
disturbances from or to the telephone as well as guarantees loss–free
power distribution.
The connections to the battery should be carried out with care. Both the
negative and positive leads have 3A fuses, which must always be used. If
a fuse blows, replace it only with the same type and size fuse.
The power cables should be routed so that possible sources of
disturbances are avoided. Also ABS–sensors and like should be avoided
as far as possible.
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P.A.M.S.
Technical Documentation
Original 08/97