Using Markers and Delta Markers – MKR Key R&S FSL
1300.2519.12 4.62 E-11
n dB down
Opens an edit dialog box to enter a value to define the level spacing of the two temporary
markers to the right and left of marker 1 (default setting: 3 dB). Activates the temporary markers
T1 and T2. The values of the temporary markers (T1, T2) and the entered value (ndB) are
displayed in the marker field.
If a positive value is entered, the markers T1 and T2 are placed below the active reference
marker. If a negative value (e.g. for notch filter measurements) is entered, the markers T1 and
T2 are placed above the active reference marker. Marker T1 is placed to the left and marker T2
to the right of the reference marker.
In the marker field, the following results are displayed:
Span setting Parameter name Description
span > 0 Bw frequency spacing of the two temporary markers
Q factor quality of the displayed bandwidth value (Bw)
span = 0 PWid pulse width between the two temporary markers
If it is not possible to form the frequency spacing for the n dB value (e.g. because of noise
display), dashes instead of a measured value are displayed.
Remote: CALC:MARK1:FUNC:NDBD:STAT ON
Remote: CALC:MARK1:FUNC:NDBD 3dB
Remote: CALC:MARK1:FUNC:NDBD:RES?
Remote: CALC:MARK:FUNC:NDBD:QFAC?
Remote: CALC:MARK1:FUNC:NDBD:FREQ? (span > 0)
Remote: CALC:MARK1:FUNC:NDBD:TIME? (span = 0)
All Marker Off
Switches all markers off.
Remote: CALC:MARK:AOFF
Marker Zoom (span > 0)
Opens an edit dialog box to enter a display range for the zoom. The area around marker 1 is
expanded accordingly and more details of the spectrum can be seen. If no marker is activated,
marker 1 is switched on and set on the largest signal..
The following sweep is stopped at the position of the reference marker. The frequency of the
signal is counted and the measured frequency becomes the new center frequency. The zoomed
display range is then configured and the new settings are used by the R&S FSL for further
measurements.
As long as switching to the new frequency display range has not yet taken place, pressing the
softkey will abort the procedure. If an instrument setting is changed while using this function, the
procedure is aborted.
Remote: CALC:MARK1:FUNC:ZOOM 1kHz
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