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SDS6000L User Manual
1 9 2 i n t . s i g l e n t . c o m
Select Operation as FFT in the math dialog box and
click Config to recall the configuration dialog box:
A. Set the maximum points (2
n
, n = 10 ~ 23)
B. Set the window type (Rectangle, Blackman,
Hanning, Hamming, and Flattop)
C. Automatically set the horizontal axis to fall
span
（
0~f
s
/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
Windows
Spectral leakage in FFTs can be considerably decreased when a window is used. SDS6000L provides
five windows that have different characteristics and apply to different scenarios.
For example, for a two-tone signal with a very close frequency interval, it is suitable to use a Rectangle
window with the best frequency resolution. For the case where the accuracy of amplitude measurement
is critical, it is recommended to select the Flattop window with the best amplitude resolution.
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