Motorola MOTOwi4 Canopy 30, User Manual, Page: 88 / 162

Issue 3.1, July 2006 Page 88 of 162
The colored bar represents the following channel state:
Green Active
The channel is currently in use hosting the
Point-to-Point wireless link
Orange Interference
The channel has interference above the interference
threshold
Blue Available
The channel has an interference level below the
interference threshold and is considered by the
Spectrum Management algorithm suitable for hosting
the Point-to-Point link
Grey Barred
The system administrator has barred this channel
from use. Because the low signal levels encountered
when a unit is powered up in a laboratory
environment prior to installation (which makes the
grey of the channel bar difficult to see). An additional
red ‘lock’ symbol is used to indicate that a channel is
barred.
Table 7: Spectrum Management (Non UK) change state key
The top of the colored bar represents the 99.9% percentile metric for specific channel.
The ‘
I
’ Bar is used to display the mean of means and peak of means metrics. The lower
horizontal bar represents the mean of means and the upper horizontal bar represents the peak
of means. The vertical bar is used as a visual cue to highlight the statistical spread between the
peak and the mean of the statistical distribution.
The peak symbol (the upper small triangle above each channel ‘
I
’ bar) is used to indicate the
peak of peaks interference measurement.
Active Channel History
The active channel history is a timeseries display of the channels used by the 30/60 Mbps
Backhaul over the last 25 hours. The active channel history is activated from the main
Spectrum Management page using the ‘Active Channel History’ hyperlink. An example of the
active channel history display is shown in Figure 55. Where there are parallel entries on the
display this signifies that the wireless link occupied this channel during the measurement
period. The measurement periods are one minute form zero to sixty minutes and twenty
minutes from 60 minutes to twenty five hours.