Agilent Technologies 2000 X-Series Manual de Serviço descarregar pdf (Página 874)

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

38 Programming Examples

# 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

# Set EDGE trigger parameters.

do_command(":TRIGger:EDGE:SOURCe CHANnel1")

qresult = do_query_string(":TRIGger:EDGE:SOURce?")

print "Trigger edge source: %s" % qresult

do_command(":TRIGger:EDGE:LEVel 1.5")

qresult = do_query_string(":TRIGger:EDGE:LEVel?")

print "Trigger edge level: %s" % qresult

do_command(":TRIGger:EDGE:SLOPe POSitive")

qresult = do_query_string(":TRIGger:EDGE:SLOPe?")

print "Trigger edge slope: %s" % qresult

# Save oscilloscope setup.

sSetup = do_query_string(":SYSTem:SETup?")

sSetup = get_definite_length_block_data(sSetup)

f = open("setup.stp", "wb")

f.write(sSetup)

f.close()

print "Setup bytes saved: %d" % len(sSetup)

# Change oscilloscope settings with individual commands:

# Set vertical scale and offset.

do_command(":CHANnel1:SCALe 0.05")

qresult = do_query_values(":CHANnel1:SCALe?")[0]

print "Channel 1 vertical scale: %f" % qresult

do_command(":CHANnel1:OFFSet -1.5")

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