4Measurement Of The Filter Or Signal Bandwidth; 5Measurement Of A Peak List - Rohde & Schwarz R&S FSP Series Operating Manual

R&S FSP
4.5.11.4 Measurement of the Filter or Signal Bandwidth
N DB DOWN The N DB DOWN softkey activates the temporary markers T1 and T2 which are n
dB below the active reference marker. Marker T1 is placed to the left and marker T2
at the right of the reference marker. The value n can be input in a window.
The default setting is 3 dB.
Span > 0:
Span = 0:
If, for example, it is not possible to form the frequency spacing for the n dB value
because of the noise display, dashes are indicated instead of a measured value.
If a negative value is entered than the markers are placed n dB above the active ref-
erence marker. This is then a n dB up function which can be used for notch filter
measurements:
To switch n dB down on or off:
Remote command:
To query the result pulse width:
Remote command:
To query the two marker x-values (in seconds) separated by comma:
Remote command:
Further remote commands:
Remote command:
4.5.11.5 Measurement of a Peak List
PEAK LIST
NEW SEARCH
SORT MODE (FREQ LEVEL)
PEAK EXCURSION
LEFT LIMIT | RIGHT LIMIT
THRESHOLD
PEAK LIST OFF
PEAK LIST EXPORT
DECIM SEP
The PEAK LIST softkey allows the peak values of the trace to be determined and
entered in a list with 50 entries max. The order of the entries is defined by the SORT
MODE:
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4.64
The frequency spacing of the two temporary markers is indicated in the
marker info field.
The pulse width between the two temporary markers is indicated in the
marker info field.
FREQ: sorting in ascending order of frequency values (see screenshot); if span =
0, the entries are sorted in ascending order of time values
CALC:MARK1:FUNC:NDBD:STAT ON
CALC:MARK1:FUNC:NDBD:RES?
CALC:MARK1:FUNC:NDBD:TIME? 'Span = 0
CALC:MARK1:FUNC:NDBD 3dB
CALC:MARK1:FUNC:NDBD:FREQ? 'Span > 0
Operating Manual 1164.4556.12 - 06
Instrument Functions
Analyzer Mode