Keysight N9923A FieldFox User Manual page 116

 Press Back to return to the previous menu.
 Press
116
S21 of a filter with BW Markers and associated readout values.
The search criteria is -3 dB.
S11 of the same filter with same search criteria: -3 dB. The same values would
result from a search criteria of approximately +30.4 dB.
Press Enter and four markers are automatically created to find the first negative
or positive bandpass over the displayed frequency range.
Bandwidth Search can be used ONLY with Log Mag display format.
The following six values are displayed for Bandwidth Search:
 BW: Width of the filter. (marker 2 freq) minus (marker 3 freq).
 Center: Marker 4 frequency. Mathematical midpoint between marker 2 and
marker 3.
 Q: Center Frequency / Bandwidth.
 Loss: Marker 1 amplitude.
 Left: Frequency of marker 2 or 3 (to left of marker 1).
 Right: Frequency of marker 2 or 3 (to right of marker 1).

then choose from the following:
Peak Search
Moves the active marker to the HIGHEST amplitude data point of the
Peak
o
trace. Peak Excursion value is ignored.
Moves the active marker to the next highest amplitude peak from
Next Peak
o
where it currently resides.
Moves the active marker to the next data point to the left that meets
Peak Left
o
the 'Peak' criteria. When no data points to the left meet the 'Peak' criteria, the
marker does not move.
Moves the active marker to the next data point to the right that
Peak Right
o
meets the 'Peak' criteria. When no data points to the right meet the 'Peak'
criteria, the marker does not move.
then
More Min Search
o
LOWEST amplitude data point of the trace.
(Not available in DTF) Moves the active marker to the
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