Stage 2: Physical Survey - Radwin 5000 HPMP User Manual

Stage 2: Physical Survey
5. Determine and record the compass bearings between HBS and fixed HSUs, relative to
north.
6. If there are obstructions between the two sites, calculate the Fresnel Zone (see
Chapter 23 for details).
7. If the sites chosen do not meet requirements, consider alternative sites.
8. Use the Link Budget Calculator (on the CD supplied with the equipment or using the
RADWIN Manager) to determine the expected performance.
Stage 2: Physical Survey
The physical site survey reviews the environment of the proposed installation location, to
ensure that the sector sites are suitable for the wireless network. The results of the physical
site survey should be recorded.
It is advisable to go on a clear day, so you can more easily see any
obstructions between the two sites.
Note
In what follows, ODU may be an HBS or a fixed HSU:

To perform a physical survey:
1. From the compass readings taken in the preliminary survey, find the azimuth (hori‐
zontal position) that each fixed HSU should face towards the HBS.
2. Using binoculars, locate any obstructions such as tall trees, high buildings, hills or
mountains. Look for other RF towers between the two sites. Mark the locations of
the obstructions on the map.
3. Determine the location for the ODUs (having regard for existing rooftop installations
and tower space). They should be above any obstructions, considering the Fresnel
zone (see Chapter 23).
4. If you need to install any type of ODU on a tower, make sure that the tower is far
enough from overhead electric power lines.
5. Determine a location for the indoor equipment; it should be as close as possible to
the ODU. At an existing site, there is probably an equipment room with cable‐routing
channels.
Outdoor CAT‐5e; Maximum cable length: 100m for 10/100BaseT and 75m
for 1000BaseT (GbE PoEs)
Note
6. Measure and record the path length of the cable from each ODU position to the
indoor equipment room.
RADWIN 5000 HPMP User Manual Release 3.5.70 3‐3