HP 8590 E & L Series Spectrum Analyzers and HP 8591C Cable TV ...

FFTPCTAM
FFT Percent Amplitude Modulation
Turns on or off the percent AM function.
Syntax
'._.__.'
0
r on 7
1
I
/
/ XFFTPCTAM
Equivalent Softkey: FFTPCTAM is equivalent to using X AK UI? OFF during an FFT
measurement.
Prerequisite Commands: FFTCONTS, FFI’MKR, FFTSNGLS, FFTAUTO.
Related Commands: FFTPCTAMR.
Example
OUTPUT 718;"FFTCONTS;" Starts the FlT
OUTPUT 718;"MOV FFTPCTAM,l;" Turns on the percent AMjimction.
Description
The FFI’PCTAM command turns the percent AM function on or off. The percent AM
modulation is calculated using only the largest single frequency of modulation.
FFTPCTAM can be executed on FFT trace data even if an FFT measurement is not being
performed, as long as the FFT marker (FFTMKR) is invoked. For example, you can restore the
percent AM readout of a recalled FFl’ trace by executing the FFTMKR command, and then the
FFTPCTAM command.
You can execute the FFTPCTAM command two different ways. You can either execute the
FFTPCTAM command directly (for example, "FFTPCTAM 1; I’) or use the MOV command to move
the 1 or 0 into the FFTPCTAM command (for example, "MOV FFTPCTAM,l;"). If you use the
MOV command, no text is displayed in the active function area during command execution.
Query Response
5-172 Programming Commands
I-- Off 7
I= 0
f -
output
’ t e r m i n a t i o n +
QFFTPCTAM