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582User Manual 1316.0827.02 ─ 06
CALCulate:MATH<m>:FFT:GATE:COUPling <GateRBWCoupling>
Defines the behaviour of the record length or RBW value in dependancy to the other FFT
parameters.
See also:
● "Record Length/RBW Coupling" on page 207
● chapter 6.3.1, "Fundamentals of FFT Analysis", on page 192
Suffix:
<m>
.
1...4
math waveform
Parameters:
<GateRBWCoupling> LENGth | RBW
LENGth
The record length remains constant. If not enough samples are
available for the selected RBW, the RBW will be decreased.
RBW
The RBW is not adapted, i.e. remains as defined by the user. The
required acquisition time for this RBW is indicated. If necessary
and possible, the record length is extended to acquire the required
number of samples.
*RST: RBW
Usage: SCPI confirmed
TIMebase:RACTime?
Queries the required acquisition time. If FFT gating is used and the resolution BW is set
to constant, record length can be extended to acquire the required number of samples.
In this case, the required acquisition time differs from the adjusted acquisition time (
TIMebase:RANGe).
Return values:
<RequiredAcqTime> Required acquisition time for FFT
Range: 250E-12 to 500
Increment: 1E-12
*RST: 0.5
Default unit: s
Usage: Query only
CALCulate:MATH<m>:FFT:FRAMe:ARIThmetics <Arithmetics>
The arithmetic mode defines how the final FFT result is calculated from the individual
frame results.
See also: chapter 6.3.3.1, "FFT Setup", on page 198.
Command Reference