Motorola PTP 300 series User Manual page 100

Hopping Counter: is used to record the number of channel hops. The number in the "(+)"
brackets indicates the number of channel changes since the last screen refresh.
Interference Threshold: Spectrum Management uses the interference threshold to perform in-
stantaneous channel hops. If the measured interference on a channel exceeds the specified threshold,
then iDFS will instruct the wireless to immediately move to a better channel. If a better channel
cannot be found the 300 Series Bridge will continue to use the current active channel. (Default -85
dBm)
Asymmetric DFS: Ony available in 5.8 GHz product. The default configuration of symmetric
operation constrains the link to operate symmetrically, using the same transmit and receive chan-
nels. When in symmetric mode the slave unit will always follow the master. If the master moves to
a new channel the slave will hop to the same channel. When the Point-to-Point link is configured
as an asymmetric link both the master and slave are free to select the best channel from their own
set of local interference metrics.
Channel Bandwidth (not configurable): shows the value of the variable channel bandwidth
selected.
8.3.7.6 Barring Channels
Channels can only be barred / unbarred by the system administrator from the master Spectrum
Management web page. The barring / unbarring operations are disabled on the slave web page. If
an attempt to bar / unbar a channel is made at the slave, a warning dialog is generated.
Barring/Unbarring of channels is performed by clicking the appropriate channel on the local or
peer channel spectrum plots on the master web page. Each bar / unbar attempt will be proceeded
by a confirmation dialog. It should be noted that the channel bar will take effect immediately and
is not related to the measurement quantization period.
8.3.7.7 Master and Slave Channel Spectrum Graphics
Spectrum Management presents its computed statistical measurements in a graphical display on
both the master and slave Spectrum Management web page. See figure
The X-axis shows a stylized view of the selectable wireless channels. It is important to note that
adjacent channels on the display have a 10 MHz overlap. The display separates the display of
channels to help the clarity of the resultant display. The axis is labeled using the channel center
frequencies in MHz.
The Y-axis shows the interference power levels from -100 to -40 dBm.
The active channel (channel 1 in
The width of the hatching is directly proportional the channel bandwidth spectral occupancy of
the channel.
The individual channel metrics are displayed using a colored bar and an 'I' bar.
The colored bar represents the following channel state:
Web Page Reference
Figure 58) is always marked using hatched green and white lines.
100
Figure 58 for example.