Data Analysis Features
All about Markers
606 Keysight N9927-90001 User’s Guide
Figure 28-5 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.
After pressing Bandwidth
, 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
(Not IQA) 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.
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