77
Table 6-20
UTD1000L User Manual
FFT window
Hanning
Hamming
Blackman
Rectangle
Characteristics
Compared with rectangular
window
resolution and inferior
amplitude resolution
,
it has good frequency
Frequency resolution of
Hamming window is rather
better than that of Hanning
window.
With the best amplitude
resolution and worst frequency
resolution.
With the best frequency
resolution and worst amplitude
resolution.
Fittest contents for measurement
Sine, period and narrow band random noise.
Transient or short pulse, signal level varies greatly
before/after it.
Mainly used for single frequency signal to find higher order
harmonics.
Transient or short pulse, signal level remains the same
basically. constant amplitude sinusoid
broadband random noise of wave
spectrum
with similar
frequency carries
with slow changes
To Next Page
Loading...
Need help?
General
