Agilent Technologies InfiniiVision 3000 X-Series, Programmer'S Manual

Page: 1173 / 1232

Programming Examples
39
Agilent InfiniiVision 3000 X-Series Oscilloscopes Programmer's Guide 1173
qresult = do_query_values(":CHANnel1:OFFSet?")[0]
print "Channel 1 offset: %f" % qresult
# Set horizontal scale and offset.
do_command(":TIMebase:SCALe 0.0002")
qresult = do_query_string(":TIMebase:SCALe?")
print "Timebase scale: %s" % qresult
do_command(":TIMebase:POSition 0.0")
qresult = do_query_string(":TIMebase:POSition?")
print "Timebase position: %s" % qresult
# Set the acquisition type.
do_command(":ACQuire:TYPE NORMal")
qresult = do_query_string(":ACQuire:TYPE?")
print "Acquire type: %s" % qresult
# Or, set up oscilloscope by loading a previously saved setup.
sSetup = ""
f = open("setup.stp", "rb")
sSetup = f.read()
f.close()
do_command(":SYSTem:SETup #8%08d%s" % (len(sSetup), sSetup), hide_param
s=True)
print "Setup bytes restored: %d" % len(sSetup)
# Capture an acquisition using :DIGitize.
do_command(":DIGitize CHANnel1")
# =========================================================
# Analyze:
# =========================================================
def analyze():
# Make measurements.
# --------------------------------------------------------
do_command(":MEASure:SOURce CHANnel1")
qresult = do_query_string(":MEASure:SOURce?")
print "Measure source: %s" % qresult
do_command(":MEASure:FREQuency")
qresult = do_query_string(":MEASure:FREQuency?")
print "Measured frequency on channel 1: %s" % qresult
do_command(":MEASure:VAMPlitude")
qresult = do_query_string(":MEASure:VAMPlitude?")
print "Measured vertical amplitude on channel 1: %s" % qresult
# Download the screen image.
# --------------------------------------------------------
do_command(":HARDcopy:INKSaver OFF")
sDisplay = do_query_string(":DISPlay:DATA? PNG, COLor")
sDisplay = get_definite_length_block_data(sDisplay)
# Save display data values to file.