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Site planning
Site planning
This section describes factors to be taken into account when choosing sites for the
ODU and PoE power supply.
ODU site selection
When selecting a site for the ODU, consider the following factors:
x
Height and location to ensure that people are kept away from the antenna; see
Calculated distances and power compliance margins
x
Height and location to achieve the best radio path.
x
Ability to meet the requirements specified in
on page 2-11.
x
Aesthetics and planning permission issues.
x
Cable lengths; see
x
The effect of strong winds on the installation; see
Power supply selection
Select a suitable power supply unit for the PTP 250. The only supported units are the
PoE power supply (included in PTP 250 kits) or the PTP 300/500/600 Series PIDU. The
PoE power supply is suitable for the majority of installations, but the PIDU is required
in the following situations:
x
When a -48 V DC power supply is required, either as the primary supply or as a
backup to the AC mains.
x
When an extended operating temperature range is required for the mains
powering system, for example when the indoor equipment is in a building without
temperature control or air conditioning.
For PIDU ordering information, see
The power supply unit must be installed in an indoor location with no possibility of
condensation, with an ambient temperature within the specified operating range of the
product; see
2-4
Maximum cable lengths
Power supply unit specifications
Chapter 2 Planning considerations
Grounding and lightning protection
on page 2-5.
Wind loading
Alternative components
on page 4-12.
on page 4-25.
on page 2-5.
on page 4-9.
phn-2182_002v000
May 2011
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