Motorola PMP 400 Series Supplement To User’s Manual page 28

PMP 400 and PTP 200 Series
In most deployments, 1/8 Cyclic Prefix will provide a high quality, higher throughput
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link. In cases with severe multi-pathing or obstructions, 1/4 Cyclic Prefix may give
better overall results.
Procedure for setting the Cyclic Prefix
3. Set the Cyclic Prefix on the Configuration => Radio page of both the BHM and the
BHS to 1/8 before deployment.
Important!
The Cyclic Prefix must be set the same on both the BHM and the BHS. If they
don't match, the BHS will not register to the BHM.
4. During installation use Link Tests to confirm link quality per standard installation and
alignment procedures.
5. If a Link Test shows low throughput or efficiency, consider changing the Cyclic Prefix
to 1/4 on both the BHM and the BHS along with other standard installation
troubleshooting procedures such as re-aiming, off-axis aiming, changing location,
raising or lowering the height of the radio, adjusting Transmission Power up or
down, or identifying and mitigating sources of interference.
Issue 3, January 2009
Canopy User Guide Supplement
Page 28 of 45