Remote commands
R&S
®
FSVA3000/ R&S
®
FSV3000
1112
User Manual 1178.8520.02 ─ 08
Example:
SWE:TIME 1s
SWE:DUR?
Reply:
27.9734842578
Usage:
Query only
Manual operation:
See
"Data capturing takes too long"
[SENSe:]SWEep:FFTSubspan?
Returns the number of FFT subspans required to cover the entire measurement range
(read-only).
See also
Only available in FFT sweep mode in the Spectrum application, and not for SEM,
ACLR, or Spurious emissions measurements.
Return values:
<NoOfPartialSpans> integer
Usage:
Query only
Manual operation:
See
[SENSe:]SWEep:OPTimize
<Mode>
In FFT mode, several FFT analysis steps are required to cover the entire measurement
span. The span which is covered by one FFT analysis step is called
subspan
. The sub-
span cannot be defined directly, but it can be optimized according to measurement
requirements.
Table 12-5: Optimization parameters in FFT mode
Optimization mode
Description
DYNamic
Optimizes the dynamic range by using the narrowest possible subspan (depending
on the RBW).
The autorange function for the internal IF gain calculation is activated to obtain the
best control range for the A/D converter.
SPEed
Optimizes the sweep rate by using the widest possible subspan (depending on the
RBW).
The autorange function for the internal IF gain calculation is deactivated. (Note: set
the reference level accordingly to optimize the control range for the A/D converter).
It is recommended that you set the
to "Auto" to optimize the sweep
rate.
AUTO
Uses a medium-sized subspan to obtain a compromise between a large dynamic
range and a fast sweep rate.
The autorange function for the internal IF gain calculation is activated to obtain the
best control range for the A/D converter.
Note: FFT mode and external mixers (R&S
FSV3-B21)
Setting basic measurement parameters
