SIP-DECT Site Survey Kit User Guide
14
If aesthetic considerations prevail, this must be compensated for with a greater number of base
stations, provided this is not rendered impossible by metallic ceiling structures.
Make sure the transmitters are fitted vertically and that the radiating surface is in keeping with
your measurements.
When installing transmitters with external directional antennas, make sure the two antennas
radiate in the same direction. The distance between the two antennas should correspond at least
to the wavelength (15.7 cm).
DECT BASE STATION FOR OUTDOOR SUPPLY
Observe the following principles when installing DECT base stations outdoors:
•
Choose a central position and avoid flat penetration angles.
•
Ensure that the selected location is as protected from the weather as possible and
corresponds to the type of protection of the outdoor base station.
•
Make sure the installation site is at a sufficient height to be protected from acts of vandalism.
DECT BASE STATION FOR INDOOR SUPPLY
Observe the following principles when installing DECT base stations indoors:
•
Install the base stations on inner walls rather than outdoor walls.
•
Consider ceiling mounting, if appropriate.
•
Do not install in the immediate vicinity of cable ducts, metal cabinets and other large metal
objects. They obstruct transmission and/or can result in crosstalk. Maintain a distance of
> 50 cm!
•
Connecting line between PBX and DECT base station:
-
Crosstalk can occur if the PBX and DECT base station are positioned in parallel with
mains feeder lines inside cable ducts (e.g. engineering workshops). This must be taken
into account when choosing the cable and the cable route.
Note:
When using directional antennas, make sure you maintain a safety distance of
0.5 m from any passers-by.
Tip:
For outdoor supply always check the use of an external antenna, too. This may
result in a better solution, which can help to save costs in the long run.
