The rest of the code follows that used for the examples, but note that it is written to the class-compliant interfaces, not the instrument-specific ones.

dmm.Configure(IviDmmFunctionEnum.IviDmmFunctionDCVolts, 1.5, 0.001);

dmm.Trigger.Delay = 0.01;

Console.WriteLine(dmm.Measurement.Read(1000).ToString());

dmm.Close();

IVI-C

This C example shows how to use an IVI-C Class Driver to achieve interchangeability. It is very similar to the IVI-C examples in Chapters 2 and 5 except for 3 differences:

1The function calls are all for the class driver and do not refer to the particular instrument being used, e.g., IviDMM_Read vs. HP34401A_Read

2The parameters in certain function calls are generic for the instrument class and do not refer to the particular instrument being used, e.g., IVIDMM_VAL_DC_VOLTS vs. HP34401A_VAL_DC_VOLTS

3The initialize function refers to a logical name instead of the instruments physical address, in this case “SampleDMM” vs. “GPIB0::23::INSTR”

In order to interchange a different DMM for the Agilent 34401A DMM, you would update your configuration store to have the logical name “SampleDMM” point to the new instrument’s Driver Session.

This is what the code for the example used in this guide would look like using and IVI-C class driver.

static ViReal64 reading; static ViSession session;

IviDMM_InitWithOptions ("SampleDMM", VI_FALSE, VI_TRUE,"Simulate=1", &session);

IviDMM_ConfigureMeasurement (session, IVIDMM_VAL_DC_VOLTS, 1.5, 0.001);

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HP Drive manual Ivi-C

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