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Figure 59: Spectrum Management Fixed Frequency Screen - Slave
Channel barring is disabled in fixed frequency mode as it is not required as dynamic channel
hopping is prohibited in this mode.
The only control available to the master is the Interference Threshold attribute. This has no
effect on the operation of the wireless link and will only affect the generation of the channel
spectrum graphics.
The active channel history menu is removed in this mode of operation as channel hopping is
prohibited.
8.3.12 Spectrum Management Control ‐ With Operational Restrictions
When operating with Radar Avoidance enabled the following variances in operation apply:
The words "Radar Avoidance" are appended to the "Spectrum Management" title at the top of
the screen.
The only controls available to the master are the Interference Threshold attribute. This has no
effect on the operation of the wireless link and will only affect the generation of the channel
spectrum graphics.
Extra color coding of the interference histogram is provided.
When operating with RTTT Avoidance enabled or other regulatory restrictions on channel usage
the following variances apply:
•
A channel marked with a 'no entry' symbol with their associated statistics colored black
are the prohibited channels. See Figure 60 and Figure 61. These channels are never
used to host the wireless link, but CAC measurements are still taken so that adjacent
channel biases can be calculated correctly and so the user can see if other equipment is
in use.
Issue 3.1, July 2006
Page 93 of 162
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