Rohde & Schwarz FSVA - Page 689

Remote Control
R&S
®
FSVA/FSV
689Operating Manual 1176.7510.02 ─ 09
Parameters:
<Distance> Distance of the temporary markers to the reference marker in
dB.
*RST: 6dB
Example:
CALC:MARK:FUNC:NDBD 3dB
Sets the level spacing to 3 dB.
Manual operation: See "n dB down" on page 292
CALCulate<n>:MARKer<m>:FUNCtion:NDBDown:FREQuency?
This command queries the position of the n dB down markers on the x-axis when mea-
suring in the frequency domain.
To get a valid result, you have to perform a complete measurement with synchroniza-
tion to the end of the measurement before reading out the result. This is only possible
for single sweeps.
Suffix:
<n>
.
Selects the measurement window.
<m> irrelevant
Return values:
<Frequency> <frequency 1>
absolute frequency of the n dB marker to the left of the reference
marker in Hz
<frequency 2>
absolute frequency of the n dB marker to the right of the refer-
ence marker in Hz
Example:
INIT:CONT OFF
Switches to single sweep mode.
CALC:MARK:FUNC:NDBD ON
Switches on the n dB down function.
INIT;*WAI
Starts a sweep and waits for the end.
CALC:MARK:FUNC:NDBD:FREQ?
Outputs the frequencies of the temporary markers.
Usage: Query only
Manual operation: See "n dB down" on page 292
CALCulate<n>:MARKer<m>:FUNCtion:NDBDown:QFACtor
This command queries the Q factor (quality) of n dB down measurements.
Suffix:
<n>
.
Selects the measurement window.
<m> Selects the marker.
Remote Control – Commands