R&S FSQ Signal Analyzer - Rohde & Schwarz

R&S FSQ Instrument Functions
4.5.11.4 Measurement of the Filter or Signal Bandwidth
Analyzer Mode
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: The frequency spacing of the two temporary markers is indicated in the
marker info field.
Span = 0: The pulse width between the two temporary markers is indicated in the
marker info field.
PEAK LIST
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 reference
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: CALC:MARK1:FUNC:NDBD:STAT ON
To query the result pulse width:
Remote command: CALC:MARK1:FUNC:NDBD:RES?
To query the two marker x-values (in seconds) separated by comma:
Remote command: CALC:MARK1:FUNC:NDBD:TIME? 'Span = 0
Further remote commands:
Remote command: CALC:MARK1:FUNC:NDBD 3dB
CALC:MARK1:FUNC:NDBD:FREQ? 'Span > 0
4.5.11.5 Measurement of a Peak List
NEW SEARCH
PEAK LIST (ON OFF)
AUTOSEARCH (ON OFF)
SORT MODE (FREQ LEVEL)
PEAK EXCURSION
SEARCH LIMITS LEFT LIMIT | RIGHT LIMIT
MKR SYMBOL (ON OFF)
NEXT PAGE
MKR SYMBOL (ON OFF)
MKR NUMBER (ON OFF)
MAX PEAK COUNT (50)
THRESHOLD
SEARCH LIM OFF
Operating Manual 1313.9681.12 - 01 4.67