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Keysight P9241/42/43A Oscilloscopes SCPI Programmer's Guide
38
Programming Examples
def do_query_values(query):
if debug:
print "Qyv = '%s'" % query
results = InfiniiVision.ask_for_values("%s\n" % query)
check_instrument_errors(query)
return results
# =========================================================
# Check for instrument errors:
# =========================================================
def check_instrument_errors(command):
while True:
error_string = InfiniiVision.ask(":SYSTem:ERRor?\n")
if error_string:
# If there is an error string value.
if error_string.find("+0,", 0, 3) == -1:
# Not "No error".
print "ERROR: %s, command: '%s'" % (error_string, command)
print "Exited because of error."
sys.exit(1)
else:
# "No error"
break
else:
# :SYSTem:ERRor? should always return string.
print "ERROR: :SYSTem:ERRor? returned nothing, command: '%s'" % comma
nd
print "Exited because of error."
sys.exit(1)
# =========================================================
# Returns data from definite-length block.
# =========================================================
def get_definite_length_block_data(sBlock):
# First character should be "#".
pound = sBlock[0:1]
if pound != "#":
print "PROBLEM: Invalid binary block format, pound char is '%s'." % po
und
print "Exited because of problem."
sys.exit(1)
# Second character is number of following digits for length value.
digits = sBlock[1:2]
# Get the data out of the block and return it.
sData = sBlock[int(digits) + 2:]
return sData
# =========================================================
# Main program:
Содержание P9241
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Страница 36: ...36 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 1 What s New...
Страница 41: ...Setting Up 2 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 41...
Страница 44: ...44 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 2 Setting Up...
Страница 222: ...222 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 7 Root Commands...
Страница 244: ...244 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 8 ACQuire Commands...
Страница 256: ...256 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 9 CALibrate Commands...
Страница 278: ...278 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 10 CHANnel n Commands...
Страница 328: ...328 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 15 EXTernal Trigger Commands...
Страница 386: ...386 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 17 FUNCtion m Commands...
Страница 390: ...390 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 18 HCOPY Commands...
Страница 416: ...416 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 20 MARKer Commands...
Страница 498: ...498 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 21 MEASure Commands...
Страница 532: ...532 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 22 MTESt Commands...
Страница 572: ...572 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 24 SAVE Commands...
Страница 596: ...596 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 25 SBUS n Commands SBUS n A429 SOURce on page 588...
Страница 900: ...900 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 28 TIMebase Commands...
Страница 1080: ...1080 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 31 WGEN w Commands...
Страница 1142: ...1142 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 34 Error Messages...
Страница 1204: ...1204 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 37 More About Oscilloscope Commands...
Страница 1344: ...1344 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide Index...