Agilent Technologies 2000 X-Series Servisní příručka stáhnout pdf (Strana 873)

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Programming Examples 38

Agilent InfiniiVision 2000 X-Series Oscilloscopes Programmer's Guide 873

If nViStatus < visa32.VI_SUCCESS Then

Dim strError As New StringBuilder(256)

visa32.viStatusDesc(Me.m_nResourceManager, nViStatus, strError)

Throw New ApplicationException(strError.ToString())

End If

End Sub

Public Sub Close()

If m_nSession <> 0 Then

visa32.viClose(m_nSession)

End If

If m_nResourceManager <> 0 Then

visa32.viClose(m_nResourceManager)

End If

End Sub

End Class

End Namespace

VISA Example in Python

You can use the Python programming language with the PyVISA package

to control Agilent oscilloscopes.

The Python language and PyVISA package can be downloaded from the

web at "http://www.python.org/" and "http://pyvisa.sourceforge.net/",

respectively.

To run this example with Python and PyVISA:

1 Cut- and- paste the code that follows into a file named "example.py".

2 Edit the program to use the VISA address of your oscilloscope.

3 If "python.exe" can be found via your PATH environment variable, open

a Command Prompt window; then, change to the folder that contains

the "example.py" file, and enter:

python example.py

# *********************************************************

# This program illustrates a few commonly-used programming

# features of your Agilent oscilloscope.

# *********************************************************

# Import modules.

# ---------------------------------------------------------

import visa

import string

import struct

import sys

# Global variables (booleans:0=False, 1 = True).

# ---------------------------------------------------------

debug = 0

# =========================================================

1 2 ... 868 869 870 871 872 873 874 875 876 877 878 ... 929 930

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