R&S ZVL Command Reference
Instrument-Control Commands
Operating Manual 1303.6580.32-05
374
CALCulate<Chn>:MARKer<Mk>:BWIDth <x_dB_Bandwidth>
Sets the bandfilter level for a bandfilter search or returns the results. The command is only available after
a bandfilter search has been executed (CALCulate<Chn>:MARKer<Mk>:FUNCtion:EXECute
BFILter; see example below).
<Chn>
Channel number used to identify the active trace.
<Mk>
Marker number in the range 1 to 10. This numeric suffix is ignored and may
be set to any value because the bandfilter search functions always use
markers Mkr1 to Mkr4.
<x_dB_Bandwidth> x dB Bandwidth parameter. The x dB Bandwidth is the difference between
the band edges and the center response value of a bandfilter peak; it must be
negative for a bandpass search and positive for a bandstop search.
Range [def. unit] For bandpass: –100.00 dB to –0.01 dB, the increment (UP/DOWN) is 0.3 dB.
[dB]
For bandstop: +0.01 dB to +100.00 dB, the increment (UP/DOWN) is 0.3 dB.
[dB]
*RST value –3 dB
Response for
query:
Search result in the format <Bandwidth>, <Center_Stimulus>, <Q>, <Loss>,
<LBE>, <UBE> where:
<Bandwidth> n-dB bandwidth of the bandpass/bandstop region, where n is the selected x
dB Bandwidth (setting command CALCulate<Chn>:MARKer<Mk>:BWIDth
<x dB Bandwidth>).
<Center_Stimulus>
Stimulus frequency at the center of the bandpass/bandstop region (the
stimulus value of marker no. 4).
<Q>
Quality factor, i.e. the ratio between the center frequency and the 3-dB
bandwidth. The Quality Factor is not available for bandstop measurements;
where the command returns a dash (–).
<Loss>
Loss at the center of the bandpass/bandstop region (the response value of
marker no. 4 at the time of the bandfilter search).
<LBE>
Lower band edge
<UBE>
Upper band edge
Range [def. unit] Depending on the measurement parameter. [units depending on the sweep
type and the marker format; see CALCulate<Chn>:MARKer<Mk>:FORMat]
*RST value –
SCPI, Command
Types
Device-specific, query only.
Example:
CALC:MARK:FUNC:BWID:MODE BST
Select a bandstop filter search.
CALC:MARK:FUNC:EXEC BFIL
Initiate the bandpass filter search for the current trace. Create markers 1 to 4.
CALC:MARK:SEAR:BFIL:RES ON
Display the marker info field in the diaram area.
CALC:MARK:BWID 6
Select a 6-dB bandwidth for the bandstop.
CALC:MARK:BWID?
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