YOKOGAWA ScopeCorder DL950, Руководство пользователя

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12-6
IM DL950-02EN
Setting the FFT Computation Range (Range Setup)
2.
On the FFT menu (1/2), tap Range Setup , or press the soft key. The following screen
appears.
FFT start point of Window1
Number of FFT points of Window1
(1k, 2k, 5k, 10k, 20k, 50k, 100k)
FFT start point of Window2
Number of FFT points of Window2
(1k, 2k, 5k, 10k, 20k, 50k, 100k)
The FFT start point and the number of FFT points are the same as those explained in “Setting
the FFT.”
Setting the Traces (Trace Setup)
2.
On the FFT menu (1/2), tap Trace Setup , or press the soft key. The following screen appears.
Select the number of the FFT you want to configure
(FFT1 to FFT8).
Turns FFT math on or off (same setting as Mode in
“Setting the FFT”)
See “Setting the FFT Math” (same settings as
spectrum in “Setting the FFT”).
Set the vertical scale.
Set the center value of the vertical scale
(when Vert Scale is set to Manual).
Set the sensitivity of the vertical scale
(when Vert Scale is set to Manual).
Set the unit.
Setting the FFT Math (FFT Math Setup)
3.
Tap FFT Math Setup , or press the soft key. The following screen appears.
Set the spectrum type (LS, RS, PS, PSD, CS, TF, or CH)
1
Set the spectrum sub type (REAL, IMAG, MAG,
LOGMAG, PHASE).
2
Set the source waveform.
Set source waveform 2. (Needs to be set depending on
the spectrum type)
1: Fixed to PS when the /G02 option is not installed.
2: Fixed to LOGMAG when the /G02 option is not installed.
The FFT math settings are the same as the spectrum type, sub type, and source
waveform settings explained in “Setting the FFT.”
12.2 Setting the Details of the FFT