LeCroy DDA 7 Zi series, Руководство оператора

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WavePro 7Zi
67
WP700Zi-OM-E-RevA
Customization Overview
The instrument provides powerful capability to add your own parameters, functions, display algorithms, or other
routines to the scope user interface without having to leave the instrument application environment. You can
customize the instrument to your needs by using the power of programs such as Excel™, Mathcad™, and
MATLAB™, or by scripting in VBS. Whichever method you use, the results appear on the instrument's display
together with the signals that you started with. This ability offers tremendous advantages in solving unique
problems for a large range of applications, with comparatively little effort from you.
Caution
Accessing the scope's automation interface from within an XDEV custom processor (VBScript, MATLAB, Excel,
etc.) is NOT recommended.
Cases where the scope's behavior cannot be guaranteed, or worse, cases which can cause the scope's
software to crash include the following:
1. Changing "Upstream" Controls
Upstream controls are considered to be any control that, if changed, could provoke an infinite loop. An example
would be a VBScript processor, in F1, which uses C1 as a source. If this processor changes the offset or vertical
scale of C1 as a result of examining its input (C1) data, an infinite loop could occur. This could eventually cause
the scope software to crash. This is not limited only to changing upstream channel controls, but includes any
upstream processing also.
2. Accessing Other Results
Access to results (waveform, measurement, etc.), other than the scripting processor's own inputs, may cause
incorrect measurements. The reason for this is simple: the scope contains a complex algorithm to determine in
which order results are computed. This algorithm ensures that all inputs required by a processor are computed
before the processor itself. If a VBScript processor decides to access, via automation, results other than those
supplied to its inputs, the scope's dependency algorithm cannot be used. Therefore, the results accessed may
not be coherent (they may be from a previous acquisition, or worse, could cause an infinite computation loop).
3. Reconfiguring Math or Measurements
Reconfiguring (adding or removing) Math and/or Measurements from within a custom processing function is not
recommended, especially when the reconfiguration would cause the custom processor to remove itself.
Instrument customization provides these important capabilities:
x
You can export data to programs, without leaving the instrument environment.
x
You can get results back from those programs, and display them on the instrument, without leaving the
instrument application environment.
x
Once the result is returned, you can perform additional scope operations, such as measuring with cursors,
applying parameters, or performing additional functions on the waveform, in exactly the same way as for a
normal waveform.
x
You can program the scope yourself.
The instrument does not just provide connectivity with data downloads to other programs. It provides true
customizable interaction with these other programs, and allows you to truly customize the scope to do the exact
job you want it to do. The advantages to this are many:
x
You can use the standard processing power of the instrument to do most of your calculations
x
You only need to write the function, parameter, display algorithm, etc. that specifically applies to your need
and that the instrument doesn’t contain.
x
You can view the final result on the instrument display, and use all of the instrument's tools to understand
the result.
x
You can do additional processing on the result by applying either standard instrument parameters,
functions, etc. to the returned result, or even more powerfully, adding chained customized functions. For
example, you can do an Excel calculation on a result with a MATLAB function applied to it.