WiNRADiO G315 User’s Manual
65
Activity Monitor
Unlike the
Spectrum Analyzer
which sweeps a continuous spectrum in a
frequency range, the
Activity Monitor
operates on discreet channel
frequencies.
To set up the sweep, you only need to define three parameters:
The
Start
frequency should be the frequency of the first channel in the band.
The
Step
size should then be equal to the channel spacing.
There are three types of displays available in the Activity
Monitor:
Level
,
Hit Count
and
Time on Air
. These are
selectable using three corresponding buttons.
In the
Level
mode, the absolute signal strength values are
shown, in
dBm
units:
The
Hit Counter
mode makes it possible to plot a histogram of "
hits
" for
frequency channels within the specified frequency range. A "
hit
" is an instance
when the signal satisfies the squelch conditions for the given frequency. This
makes it possible to observe and monitor traffic on particular channels over a
period of time, and provide an indication of activity on a band. Instead of
displaying signal strength on the vertical axis like the
Spectrum Analyzer
, the
Hit Counter
shows the number of hits.
The hits are represented by bars of different heights. The height of each bar is
relative to the number of hits. The bar corresponding to the frequency with the
highest number of hits will always remain of the maximum height (100%) that
fits the window. The other bars will have proportionally smaller heights. The
marker,
Min
,
Max
and
Diff
buttons are all disabled in the
Hit Counte
r
mode.
The
Time on Air
mode is similar to the
Hit Counter
, however, the bar heights
represent percentages of time during which the channels were on air (relative
to the total scan time).
