IVI Driver Help

Edition Date: August 2011

Part Number: 370430H-01

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IVI Inherent Function

To form the ClassPrefix_ of the function name, use the prefix of the class driver with which you are working. For example, if you are working with the IviDmm class driver, use the prefix IviDmm_ to create the correct function name, IviDmm_ResetInterchangeCheck.

C Function Prototype

ViStatus ClassPrefix_ResetInterchangeCheck (ViSession vi);


When developing a complex test system that consists of mulitple test modules, it is generally a good idea to design the test modules so that they can run in any order. To do so requires ensuring that each test module completely configures the state of each instrument it uses. If a particular test module does not completely configure the state of an instrument, the state of the instrument depends on the configureation from a previously executed test module. If you execute the test modules in a different order, the behavior of the instrument and therefore the entire test module is likely to change. This change in behavior is generally instrument specific and represents an interchangeability problem.

You can use this function to test for such cases. After you call this function, the interchangeability checking algorithms ignore all previous configuration operations. By calling this function at the beginning of a test module, you can determine whether the test module has dependencies on the operation of previously executed test modules.

This function does not clear the interchangeability warnings from the list of previously recorded interchangeability warnings. If you want to guarantee that the ClassPrefix_GetNextInterchangeWarning function only returns those interchangeability warnings that are generated after calling this function, you must clear the list of interchangeability warnings. You can clear the interchangeability warnings list by repeatedly calling the ClassPrefix_GetNextInterchangeWarning function until no more interchangeability warnings are returned. If you are not interested in the content of those warnings, you can call the ClassPrefix_ClearInterchangeWarnings function.


Name Type Description
vi ViSession   The instrument handle that you obtain from the ClassPrefix_init or ClassPrefix_InitWithOptions functions. The handle identifies a particular IVI session.

Return Values

Related Topic

Interchangeability Checking


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