FFT Mode
4-3
4.2 FFT Mode Settings
This section describes the procedures and restrictions for using FFT mode.
Cursors displayed REPLAY mode
FFT Waveform Display Setup Parameters
Before using FFT Mode
This section describes the procedures and restrictions before using FFT mode.
FFT Mode Setting Windows
All menus other than the Record Settings window and Readout Menu window shown below are the same as
those in Recorder mode, except for the following restrictions. For details of common menus, please refer to
Chapter 3, "Recorder Mode Settings".
Usage Methods
Usage method 1 :
In FFT mode, data is captured in the internal memory when measurement starts, and is displayed using the
analysis method set.
Usage method 2 :
After capturing data in Recorder mode, switch to FFT mode using the MODE key and press the REPLAY key
to display the data using the analysis method set.
Usage method 3 :
After data capture has been completed in Recorder mode, FFT calculation can be performed by selecting
FFT calculation in the Readout menu. Only in this case is it possible to return to Recorder mode.
Restrictions
• Span cannot be set.
• Annotation printing is not possible.
• The data Capture Destination can be specified as internal memory only.
• Arithmetical and statistical calculation are not possible.
• Replay CH selection and Output Ratio selection cannot be performed during data replay.
• The Format Settings window cannot be displayed.
• The trigger stop conditions cannot be used.
CAUTION
FFT calculation results cannot be printed out on chart paper. Press the COPY key to make a copy of the display
screen. Note that the amplifiers do not include an anti-aliasing function, and so aliasing phenomena may occur when
data measured in Recorder mode is subjected to FFT processing.
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