HP Driver.InitializelogicalName, true, true, String identifier = driver.Identity.Identifier

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a reference to the instance of the driver. This line of code then casts the reference returned to type IIviDriver, from which all of IVI’s inherent capabilities can be referenced.

IIviDriver driver = (IIviDriver)factory.CreateDriver(logicalName);

6Initialize is required, because the Session Factory does not take care of that function.

driver.Initialize(logicalName, true, true);

7Identity is a property of IIviDriver that references the IIviDriverIdentity interface. Identifier is a property of IIviDriverIdentity interface that returns a string that identifies the driver.

string identifier = driver.Identity.Identifier;

8Print the string.

Console.WriteLine("Identifier: {0}", identifier);

IIviDmm

If we want the code to use multiple drivers that all support the DMM class and use the IVI DMM class interfaces, we must modify it as shown below. Note that only IVI- COM drivers that implement the IVI DMM class will work with this program.

1Create a string variable for logical name. string logicalName = "LineVoltage";

2Create an instance of the Session Factory.

IIviSessionFactory factory = new IviSessionFactoryClass();

3Set the type to match the referenced IVI Instrument Class for class interchangeability. This code for IIviDmm uses the factory to create a driver based on the logical name "LineVoltage."

4In the Configuration Store, logical name "LineVoltage" points to a driver session. The driver session points to a software module, which can be any IVI- COM driver. The Session Factory creates an instance of the driver and returns a reference to the instance of the driver. This line of code then casts the reference returned to type IIviDmm, from which all of IVI DMM’s class- compliant features can be referenced.

IIviDmm dmm = (IIviDmm)factory.CreateDriver(logicalName);

5Initialize is required, because the session factory does not take care of that function.

dmm.Initialize(logicalName, false, false, “simulate=true”);

Chapter 11