User's Guide Part 1

User Guide: PTP 600 Series Link planning
phn-0896_009v003
Feb 2010
UNDER DEVELOPMENT
2-9
Link planning
Range and obstacles
The PTP 600 Series are designed to operate in Non-Line-of-Sight (NLoS) and Line-of-
Sight (LoS) environments.
The PTP 600 Series will operate at ranges from 100 m (330 ft) to 200 km (124 miles),
within 3 modes: 0-40km (0-25 miles), 0-100km (0-62 miles) and 0-200km (0-124 miles).
Operation of the system will depend on obstacles in the path between the units.
Operation at 40 km (25 miles) or above will require a near line-of-sight path. Operation
at 100m (330 ft) could be achieved with one unit totally obscured from the other unit,
but with the penalty of transmitting at higher power in a non-optimal direction,
thereby increasing interference in the band.
A survey must be performed to identify all the obstructions (such as trees or buildings)
in the path and to assess the risk of interference. This information is important if you
are to achieve an accurate link feasibility assessment.
PTP LINKPlanner
Link planning enables a link of known quality to be installed. This involves the
acquisition of path profile data (using Motorola’s free LINKPlanner utility). The
LINKPlanner predicts data rates and reliability over the path. It allows the user to try
different antenna heights and RF power settings. When the link is installed, the mean
path loss can be checked to confirm that the predicted data rate and link reliability is
achievable. Motorola LINKPlanner is available to download from
http://www.motorola.com/ptp/support.