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LeCroy 9400A User Manual

LeCroy 9400A
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The 9400A’s Function F can also be defined as the Power Average of the
FFT computed by Function E.
Values of the following FFT processing parameters can be selected in
the FFT Power Average redefine menu or with remote control commands:
Function Type:
Display Type:
Transform Size:
Source Trace:
Max number of sweeps:
FFT Power Average
Power Spectrum (dBm)
Power Density (dBm)
Magnitude
same as Function E
Function E
i0 to 200
All WPOI
Smoothing)
processing.
functions (Averaging, Extrema, Arithmetic, Functions and
can be applied to waveforms either before or after the FFT
Menus and front panel controls related to FFT are similar to the
corresponding WPOI controls (see Section i0.i).
Remote control commands related to FFT provide for the definition of
processing and the readout of waveform data and status, as well as the
loading of reference waveforms into the 9400A’s memories (C, D).
The commands are similar to the corresponding WP01 commands (see
Sections 7, 10.3 and 11.3).
Spectra are computed over the full length of the source time domain
waveform.
Sub-sampling of the source waveform is available (with the Transform
Size option in the FFT menu), so that the the computation speed can be
traded against the frequency range.
Spectra are displayed with frequency axes running from zero to Nyquist
frequency, over 5 or 6.25 divisions, with the frequency scale factor in
a I-2-5 sequence.
The Time Magnifier operates on the FFT output traces as a Frequency
Magnifier (up to 100 times).
11-2
Fast Fourier Waveform Processing
Option (WP02, V 2.06FT)

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LeCroy 9400A Specifications

General IconGeneral
BrandLeCroy
Model9400A
CategoryTest Equipment
LanguageEnglish

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