Agilent Technologies 2000 X-Series Instrukcja Obsługi Pobierz pdf (Strona 827)

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Programming Examples 38

Agilent InfiniiVision 2000 X-Series Oscilloscopes Programmer's Guide 827

python example.py

# Agilent VISA COM Example in Python using "comtypes"

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

# This program illustrates a few commonly used programming

# features of your Agilent oscilloscope.

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

# Import Python modules.

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

import string

import time

import sys

import array

from comtypes.client import GetModule

from comtypes.client import CreateObject

# Run GetModule once to generate comtypes.gen.VisaComLib.

if not hasattr(sys, "frozen"):

GetModule("C:\Program Files (x86)\IVI Foundation\VISA\VisaCom\

GlobMgr.dll")

import comtypes.gen.VisaComLib as VisaComLib

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

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

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

# Initialize:

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

def initialize():

# Get and display the device's *IDN? string.

idn_string = do_query_string("*IDN?")

print "Identification string '%s'" % idn_string

# Clear status and load the default setup.

do_command("*CLS")

do_command("*RST")

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

# Capture:

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

def capture():

# Use auto-scale to automatically set up oscilloscope.

print "Autoscale."

do_command(":AUToscale")

# Set trigger mode.

do_command(":TRIGger:MODE EDGE")

qresult = do_query_string(":TRIGger:MODE?")

print "Trigger mode: %s" % qresult

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