YOKOGAWA ScopeCorder DL950 - Setting the Details of the FFT

12-5
IM DL950-02EN
Setting the FFT (FFT Setup)
2.
On the FFT menu (1/2), tap FFT Setup, or press the soft key. The following screen appears.
Turns FFT on or off.⁴
Turns FFT Window1
and 2 on or off
1
FFT start point
2
Set the source waveform.⁴
Set the spectrum type⁴ (LS, RS, PS, PSD, CS, TF, or CH).
Number of FFT points
2
(1k, 2k, 5k, 10k, 20k, 50k,
100k)
Set the window
function.
3
(Rect, Hanning, FlatTop,
Hamming, Exponential)
Set the spectrum sub type⁴ (REAL, IMAG, MAG, LOGMAG, PHASE).
Set source waveform 2.⁴ (Needs to be set depending on
the spectrum type)
1: Same as the Window1 and Window2 on/off setting in section 12.1
2: Same as the FFT analysis range setting
3: Same as the window function setting of average measurement
4: Same as the trace setting
Configure FFT Window1.
Configure FFT Window2.
Note
If the number of points is set to 50 k, you cannot display FFT1, FFT2, FFT5, or FFT6.
If the number of points is set to 100 k, you can only display FFT1 and FFT5.
Setting the Exponential Window Function (/G02 option)
When the window function is set to Exponential, use the Setup button to set the damping rate
and measurement time period.
Set the damping rate.
Set the math range.
12.2 Setting the Details of the FFT