LeCroy DDA 7 Zi series, Operator'S Manual

Page: 69 / 544

Operator's Manual
WP700Zi-OM-E-RevA
68
Solutions
Engineers do not buy equipment; they buy solutions. But what solutions can be reached from a set of instrument
waveform data? In principle, anything that can be logically derived from those data, given the limitations of signal-
to-noise ratio and processing time. Here are some examples of what can be done with a customized instrument:
x
Changing the units of a grid to joules, newtons, amps, etc.
x
Creating a new waveform by manipulating the data of one or two input waveforms
x
Creating a new waveform without using any of the input data
x
Creating a new parameter by manipulating the data of one or two input waveforms
x
Changing a vertical scale or a horizontal scale from linear to non-linear
You don’t have to use all the data from the input waveforms: you can select data from one or more segments,
which need not be aligned in the two-input waveforms.
Examples
Example 1: Simple math functions using VBScript
WaveOut is the waveform being returned to the instrument (F1 in this case). WaveIn is the input waveform (C1 in
this case) You can see that the F1 result is displayed on the scope, and can be processed further.
Example 2: Another simple math functions using VBScript
Example 3 below doesn’t use the input data at all. The middle waveform (F2) is a "golden waveform", in this case
a perfect sine (subject to 16-bit resolution), that was created using a VBScript. The lower trace (F3) is a
subtraction of the acquired waveform (upper trace) and the golden waveform. The subtraction (of course)
contains all the noise, but it also shows the presence of a very small square wave signal.