142 N9912A FieldFox User’s Guide
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).
Press Back to return to the previous menu.
Press Peak Search then choose from the following:
Peak Moves the active marker to the HIGHEST amplitude data point of the
trace. Peak Excursion value is ignored. In SA Mode, the LO feed-through signal
(0 Hz) is also ignored.
Next Peak Moves the active marker to the next highest amplitude peak from
where it currently resides.
Peak Left Moves the active marker to the next data point to the left that meets
the ‘Peak’ criteria. When no data points to the left meet the ‘Peak’ criteria, the
marker does not move.
Peak Right Moves the active marker to the next data point to the right that
meets the ‘Peak’ criteria. When no data points to the right meet the ‘Peak’
criteria, the marker does not move.
The following applies to DTF Measurements ONLY:
More then:
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