Agilent Technologies FieldFox N9912A User Manual page 127

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Data Analysis Features
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
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