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Getting Started
1–26
AM700 Audio Measurement Set Programmer Manual
FFT Analyzer SCPI Commands.
In the FFT Analyzer, the calculate blocks are
separated by channels and function. Calculate1 is used for the fft zoom functions of
channel 1 and is fed by the CSTReam1 feed. Calculate2 is also used for the fft zoom
functions, but for channel 2. It is fed by the CSTReam2 feed where the feeds are one
of the SENSe signals. Calculate3 and Calculate4 control the averaging commands of
the FFT Analyzer. As with calc1 and calc2 there are two channels, and calc3
controls the averaging on channel 1 while calc4 controls the averaging on channel 2.
HARD WIRE
CSTReam1
HARD WIRE
CSTReam2
CALCulate1:
CALCulate2:
CALCulate3:
CALCulate4:
CALCulate5:
CALCulate6:
LogZoom FFT Averaging
CALCulate1
:FEED CSTReam1
CALCulate2
:FEED CSTReam2
CALCulate1
:TRANsform
:FREQuency
:STARt <numeric_value>
:CENTer
CALCulate4
:AVERage
:COUNt <numeric_value>
:AVERage
STATe ON|OFF
AVERage?
TRACe1:DATA?
TRACe2:DATA?
LogZoom FFT Averaging
Figure 1–11: FFT CALCulate subsystem block