SDS800X HDUser Manual - Page 156

For SDS800X.

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SDS800X HD Series User Manual
146 in t.siglent.co m
FFT points (Curr):
The current FFT points, which is an integer power of 2. The SDS800X HD
supports up to 2 M points (2097152, to be exact).
Frequency interval (
f):
The frequency interval between two adjacent points in the FFT
sequence, which is proportional to the frequency resolution.
Average count of FFT (Avg):
Displayed only when the FFT mode is set to "Average", indicating
the completed average count.
Resolution Bandwidth (RBW)
- the 3dB bandwidth of the amplitude frequency response
corresponding to the time window, which is related to the fence width and different window factors
of the FFT.
Select Function as FFT in the math dialog box and touch
Config to recall the configuration dialog box:
A. Set the maximum points (2
n
, n = 10 ~ 21)
B. Set the window type (Rectangle, Blackman, Hanning,
Hamming, and Flattop)
C. Automatically set the horizontal axis to fall span (0~fs/2)
D. Automatically set the center frequency to the maximum
frequency component in the previous frame
E. Select the display mode (Split, Full Screen, and Exclusive)
F. Select the FFT mode (Normal, Average, and Max-Hold)
G. Set the average count in average mode
H. Reset average
I. Return to the previous menu
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