Agilent Technologies InfiniiVision 3000 X-Series - Page 1224

1224 Agilent InfiniiVision 3000 X-Series Oscilloscopes Programmer's Guide
40 Programming Examples
f = open("screen_image.png", "wb")
f.write(sDisplay)
f.close()
print "Screen image written to screen_image.png."
# Download waveform data.
# --------------------------------------------------------
# Set the waveform points mode.
do_command(":WAVeform:POINts:MODE RAW")
qresult = do_query_string(":WAVeform:POINts:MODE?")
print "Waveform points mode: %s" % qresult
# Get the number of waveform points available.
do_command(":WAVeform:POINts 10240")
qresult = do_query_string(":WAVeform:POINts?")
print "Waveform points available: %s" % qresult
# Set the waveform source.
do_command(":WAVeform:SOURce CHANnel1")
qresult = do_query_string(":WAVeform:SOURce?")
print "Waveform source: %s" % qresult
# Choose the format of the data returned:
do_command(":WAVeform:FORMat BYTE")
print "Waveform format: %s" % do_query_string(":WAVeform:FORMat?")
# Display the waveform settings from preamble:
wav_form_dict = {
0 : "BYTE",
1 : "WORD",
4 : "ASCii",
}
acq_type_dict = {
0 : "NORMal",
1 : "PEAK",
2 : "AVERage",
3 : "HRESolution",
}
preamble_string = do_query_string(":WAVeform:PREamble?")
(
wav_form, acq_type, wfmpts, avgcnt, x_increment, x_origin,
x_reference, y_increment, y_origin, y_reference
) = string.split(preamble_string, ",")
print "Waveform format: %s" % wav_form_dict[int(wav_form)]
print "Acquire type: %s" % acq_type_dict[int(acq_type)]
print "Waveform points desired: %s" % wfmpts
print "Waveform average count: %s" % avgcnt
print "Waveform X increment: %s" % x_increment
print "Waveform X origin: %s" % x_origin
print "Waveform X reference: %s" % x_reference # Always 0.
print "Waveform Y increment: %s" % y_increment
print "Waveform Y origin: %s" % y_origin
print "Waveform Y reference: %s" % y_reference