Chapter 4

Using IVI with LabVIEWTM

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The Environment

National Instruments LabVIEW is a graphical development environment for signal acquisition, measurement analysis, and data presentation. LabVIEW provides the flexibility of a programming language with less complexity than traditional development tools.

Example Requirements

LabVIEW 8.2.0

IVI-C: Agilent 34401A IVI-C specific driver, Version 4.1, October 2006 (from National Instruments)

IVI-COM: Agilent 34401A IVI-COM driver, Version 1.1.0.11, March 2006 (from Agilent Technologies)

Note: These drivers may require an I/O library to be installed. Check the driver vendor’s Web site for details.

Download and Install the Driver

If you have not already installed the driver, go to the vendor Web site and follow the instructions to download and install it.

Since LabVIEW supports both IVI-C and IVI-COM drivers, this example is written two ways, first to show how to use an IVI-C driver in LabVIEW, and second how to use an IVI-COM driver in LabVIEW.

Note: The functionality shown in the example is available in a LabVIEW example supplied with the IVI driver from National Instruments.

Using IVI-C

Alll IVI-C drivers provide a Dynamic Link LIbrary (DLL) interface. While LabVIEW provides the Call Library Function node to call DLLs, many IVI-C drivers also come with a LabVIEW wrapper that provides the familiar VI interface to the driver’s

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HP Drive manual Chapter Using IVI with LabVIEWTM, Using IVI-C

Drive specifications

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