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FFT
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FFT
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Spectrum Analyzer Mode
Kay
Descriptions
Spectrum Analyzer Mode Functions
if the FFT mode is already active, pressing FFT MARKERS
only activates the FFT markers. If the FFT mode is not
active, then the FFT marker will be activated and the
FFT annotation will be displayed but an FFT will not be
performed. Pressing the
%
AM ON OFF key will give a valid
value for the signal in trace B. Press FFT OFF to return the
analyzer to normal operation.
An FFT trace can be saved and recalled. If a trace has been
recalled, FFT MARKERS can be used to activate the markers
so that the trace can be evaluated.
Front-Panel Key Access
(MEAS/USER)
accesses the menu of keys to initiate and evaluate a Fourier
transform of the analyzer displayed data. Activating other
analyzer functions will automatically exit the FFT function
or will corrupt the display. See
Table
6-6.
Table
6-6.
Compatibility of FFT With Other Functions
Function
Catalog functions
DLP Editor
Marker Table
N
dB
Points measurement
Peak Table
Power Menu measurements
Time Gate functions
TOI
measurement
Compatibility Info
corrupts the display
corrupts the display
exits
FFT
exits
FFT
exits
FFT
i
exits
FFT
corrupts the display
exits
FFT
exits
FFT
exits
FFT
Front-Panel Key Access
(MEAS/USER)
6-71