Agilent Technologies

VISA: Taking a Thermocouple Measurement using VB.NET Read Me

This sample program sets the 34970A for a simple scan that makes both DCV and type J thermocouple temperature measurements.

Date: August 27, 2004
Version: 1.0.0.0
Language: Microsoft® Visual Basic .NET version 7.0
Operating System: Windows® NT® 4.0, 2000 Professional, or XP
VISA Version: Use Agilent I/O Library version M.01.01.04 or above

This sample program sets the 34970A for a simple scan that makes both DCV and type J thermocouple temperature measurements. The program also checks the instrument and module identification to make sure there is communication between the 34970A and the computer, and the correct module is installed. The returned data is entered into a list box.

The program requires that VISA is installed in your computer. VISA comes with the Agilent I/O Library. A modified version of visa32.bas is included in the project as file visa32.vb. For VISA to work correctly, the visa32.bas file was modified, as shown in comments in the the file. Also, the "Microsoft.VisualBasic.Compatibility.dll" has to be referenced in the project since VISA needs some older Visual Basic capabilities, especially in setting the size of string variables.

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