User's Guide Part 1

Table Of Contents
Chapter 3: System planning Site planning
PSU location
Find a location for the AC+DC Enhanced Power Injector that meets the following requirements:
The AC+DC Enhanced Power Injector can be mounted on a wall or other flat surface.
The PSU is kept dry, with no possibility of condensation, flooding or rising damp.
The PSU is located in an environment where it is not likely to exceed its operational
temperature rating, allowing for natural convection cooling.
The PSU can be connected to the ODU drop cable and network terminating equipment.
The PSU can be connected to a compatible power supply. AC+DC Enhanced Power Injector:
the use of DC supplies of less than 55V will reduce the usable distance between the PSU
and ODU.
PTP-SYNC location
If PTP-SYNC is to be installed, consider the following factors when selecting a site:
Indoor location with no possibility of condensation.
Accessibility for viewing status indicators.
The maximum cable length between the PSU and the PTP-SYNC is 2 m (6 ft).
GPS receiver location
Mount the GPS receiver for PTP-SYNC at a location that meets the following requirements:
It must be possible to protect the installation as described in Grounding and lightning
protection on page 3-11.
It must have an un-interrupted view of at least half of the sky. For a receiver mounted on a
wall there must be no other significant obstructions in the view of the sky.
It must be mounted at least 1 m (3 ft), preferably 2 m (6 ft), away from other GPS receiving
equipment.
It must not be sited in the field of radiation of co-located radio communications equipment
and should be positioned at a distance of at least 3 m (10 ft) away.
Mount the GPS receiver on the wall of the equipment building, if there is a suitable location on
the wall that can meet these requirements. Failing that, mount it on a metal tower or mast.
Caution
The GPS receiver is not approved for operation in locations where gas hazards exist,
as defined by HAZLOC (USA) and ATEX (Europe). If PTP-SYNC is required in a
hazardous location then the timing reference source must be either a PTP 700 ODU or
a cabled 1 Hz signal from a system approved for Hazardous locations.
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