LeCroy 9400A

Table 11.3 Window frequency domain parameters
Window type
Highest Scallop ENBV Coherent
side-lobe loss
gain
(dB) (dB) (bins) (dB)
Rectangular
- 13
3.92 1.0 0.0
yon Hann
- 32 1.42 1.5 - 6.02
Hamming - 43 1.78 1.37 - 5.35
Flat-Top - 44 0.01 2.96 -11.05
Blackman-Harris - 67 1.13 1.71 - 7.53
11.7 Errors and Warnings
Certain combinations of source waveform properties
functions may result in an error or raise a warning.
message is displayed at the top of the 9400A screen.
and processing
The appropriate
On Error, processing is abandoned.
On Warning, processing is performed, but the results are corrupted.
ERROR: FFT src wfm is in sequence mode.
FFT of sequence mode waveform has not
abandoned.
been implemented.
Processing
ERROR: FFT src wfm is in frequency domain.
FFT of a frequency domain waveform has not been implemented. Processing
abandoned.
ERROR: FFT AVG src wfm not in freq domain.
FFT Power Average mode (Function F only) is active only if Function E
defined as FFT. Processing abandoned.
You should define Function E as FFT.
11-21
Fast Fourier Waveform Processing
Option (WP02, V 2.06FT)