Product manual

Configuration directions, Base station planning - additional information
Technical Product Manual - DCT1800-GAP
TD 92093 (1/LZBNB 103 108 R4D) / 2006-03-09/ Ver.C
© 2006
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The same applies here too that the base station must be able to ‘see’ as much as possible of the
outdoor area to be covered (i.e. there must be as few obstacles as possible between the base station
and the area for which coverage is to be provided). Ensure that you carry out a measurement to check
how much coverage a base station provides because the intention is not to install all the base stations
in front of the window (normally 1-2 base stations are sufficient). Take account of this during the survey
and do not start moving the base stations once the site survey is finished.
4.2.5 Fire-resistant walls/doors
The same applies here as recorded for walls in 1.2.2 Walls. Bear in mind, however, that the fire doors
are usually open during the site survey!
Should a fire break out and the doors then be closed, there must of course still be sufficient coverage.
It sounds very trivial but it is sometimes forgotten.
4.2.6 Location of the base stations
Once you have analysed the surroundings and have carried out a measurement, it is best to specify
an exact position for the base station. There are, of course, many possibilities for this. The approximate
determination of the location has already been described above; however a number of factors that
you can bear in mind at the time when you wish to identify an exact position are given below. Two
issues are very important here:
• Client’s requirements
• Experience and common sense
The client’s requirements can have a great impact on the actual location of a base station. Take, for
example, a prison where it is only permissible to install a base station in a location to which a prisoner
can never gain access and where a prisoner can reach 80% of the complex. Such a request from a
client soon limits you to siting a base station at almost every ‘safe’ place because you will not otherwise
succeed in covering the whole complex.
A few tips for siting base stations:
• Discuss with the client whether he wishes to have the base stations installed visibly or out of sight.
If the client wants the base stations not to be visible, the possibility of installing the base stations
such that the antennas project out of the ceiling should perhaps be considered. This is done to
prevent a base station from being obstructed by ventilation ducts, metal panels on the ceiling or
any other obstacles. If this is also not acceptable, ensure that you site the base stations such that
disruption by the obstacles above the ceiling (therefore always look above the ceiling) or behind
walls is minimised.
• Discuss with the client his thoughts on non-standard areas such as toilet rooms and lifts.
• Discuss with the client what level of quality is required where (good quality or availability).
Surface coated
float glass
30-50
Wired glass (fine-
mesh)
0-20
Type of glass Range in meters
Table 3 Type of glass versus base station range