Cambium PTP 670 Series, User Manual

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Chapter 1: Product description Wireless operation
Page 1-19
For information about… Refer to…
Single and dual payload modulation modes System threshold, output power and link loss
on page 3-65
TDM single payload lock feature TDM on page 7-15
Dynamic spectrum optimization
The PTP 670 series uses an interference mitigation technique known as Dynamic Spectrum
Optimization (DSO). Both the Master and Slave continually monitor for interference on all
channels and then select the best frequency of operation. This is a dynamic process where the
PTP 670 can continually move channels in response to changes in interference. Two modes of
operation are available:
•
First mode: the two link directions are forced to select the same frequency, determined by
the Master.
• Second mode: the frequency of operation can be determined independently for each
direction. This mode is not permitted in radar regions.
Note
PTP 670 does not support Dynamic Spectrum Optimization in the HCMP topology.
Further reading
For information about… Refer to…
Using DSO in PTP networks Using Dynamic Spectrum Optimization on page 1-25
Planning to use DSO Frequency selection on page 3-22
How to configure DSO Wireless Configuration page on page 6-25
Asymmetric DSO in non-radar regions Spectrum Management Settings on page 7-35
Radar avoidance
In regions where protection of radars is part of the local regulations, the PTP 670 must detect
interference from radar-like systems and avoid co-channel operation with these systems.
To meet this requirement, the PTP 670 implements the following features:
•
The radar detection algorithm will always scan a usable channel for 60 seconds for radar
interference before making the channel an available channel.
•
This compulsory channel scan will mean that there is at least 60 seconds service outage
every time radar is detected and that the installation time is extended by at least 60
seconds even if no radar is found.