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Chapter 4
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Using IVI with LabVIEW
TM
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
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LabVIEW 8.2.0
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IVI-C: Agilent 34401A IVI-C specific driver, Version 4.1, October 2006 (from
National Instruments)
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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