Tektronix AWG2021 User Manual page 567

Appendix F: Miscellaneous
F 20
Square Wave Window. The square wave window does not taper the time region
data. The filter shape in the frequency region is sin(x)/x. The square wave
window is appropriate for observing the frequency spectrum of non-repetitive
signals. The square wave window is also used for observing frequency compo-
nents near DC.
Window Function
Figure F 8: Square Window and Frequency Characteristic
Hanning Window. The Hanning window is a function derived from the cos
function. This window function has superior magnitude precision and leakage
elimination characteristics.
Window Function
Figure F 9: Hanning Window and Frequency Characteristic
0 dB
-20
-40
-50
Freq. Magnitude
0 dB
-20
-40
-60
-80
Freq. Magnitude
3 dB Bandwidth
0.89
Highest
Side Lobe
-13 dB
3 dB Bandwidth
1.44
Highest
Side Lobe
-32 dB
AWG2021 User Manual