3 Spectrum Analyzer Mode
3.4 Occupied BW Measurement
Top Line
On the top line, each trace number is shown, in the trace color. A box is drawn
around the currently selected trace.
Middle Line
Below each trace number, is a letter signifying the trace type for that trace number,
where
W
Clear/Write
A
Trace Average
M
Max Hold
m
Min Hold
If the letter is white, it means the trace is being updated (Update = ON); if the letter is
dimmed , it means the trace is not being updated (Update = OFF). A strikethrough
indicates that the trace is blanked (Display = OFF). Note that it is possible for a trace
to be updating and blanked, which is useful if the trace is a trace math component.
Bottom Line
The third line shows the detector type for each trace, or, if trace math is on for that
trace, it shows “f” (for “math function”). It is not always possible to have a unique
detector for each trace, but the instrument hardware provides the maximum
flexibility of detector selection in order to maintain the highest accuracy. The letters
used for this readout are
N
Normal
A
Average
P
peak
p
negative peak
S
Sample
Q
Quasi Peak
E
EMI Average
R
RMS Average
f
math function
If the letter is green, the detector is in Auto. If white, the detector has been
manually selected.
In the example above, the panel is indicating the following:
Spectrum Analyzer Mode User's &Programmer's Reference 847
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