--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/HP3562A/state_decoder.py Tue Dec 18 00:23:10 2007 +0100
@@ -0,0 +1,151 @@
+# -*- coding: utf-8 -*-
+"""
+state_decoder
+=============
+
+Module for decoding the internal state of the HP3562A DSA, using the
+GPIB command "DSBN" (Dump State BiNary).
+
+This file can be exectued as a python script. Use '-h' for more informations.
+"""
+from HP3562A import format_header, decode_float, decode_string, decode_header
+
+from HP3562A.enum_types import *
+
+HEADER = [("Measurement mode", EMEAS, 'h', 2),
+ ("Measurement 1", EMTYP, 'h', 2),
+ ("Measurement 2", EMTYP, 'h', 2),
+ ("Window type", EWINTYP, 'h', 2),
+ ("Force/Expon window 1", EFEXPW, 'h', 2),
+ ("Force/Expon window 2", EFEXPW, 'h', 2),
+ ("Average type", EAVGTYP, 'h', 2),
+ ("Overlap percentage", int, 'h', 2),
+ ("Number of averages", int, 'h', 2),
+ ("Sweep # of averages", int, 'h', 2),
+ ("Trigger type", ETRGTYP, 'h', 2),
+ ("Trigger slope", ETRGSLP, 'h', 2),
+ ("Preview type", EPRVTYP, 'h', 2),
+ ("Sample type", ESMPTYP, 'h', 2),
+ ("Range units chan 1", ERNGUNT, 'h', 2),
+ ("Range units chan 2", ERNGUNT, 'h', 2),
+ ("Range type 1", ERNGTYP, 'h', 2),
+ ("Range type 2", ERNGTYP, 'h', 2),
+ ("Input coupling 1", EINCPL, 'h', 2),
+ ("Input coupling 2", EINCPL, 'h', 2),
+ ("Source type", ESRCTYP, 'h', 2),
+ ("Chirp percent", int, 'h', 2),
+ ("Burst percent", int, 'h', 2),
+ ("Sweep direction", ESWPDIR, 'h', 2),
+ ("Sweep mode", ESWPMOD, 'h', 2),
+ ("Ext sample freq untis", EXAXIS, 'h', 2),
+ ("Bandwidth units", EXAXIS, 'h', 2),
+ ("Log span index", int, 'h', 2),
+ ("Log start index", int, 'h', 2),
+ ("Sweep rate units", EXAXIS, 'h', 2),
+ ("Auto gain ref chan", EDEMODCH, 'h', 2),
+ ("Demod channels", EDEMODCH, 'h', 2),
+ ("Demod type chan 1", EDEMOD, 'h', 2),
+ ("Demod type chan 2", EDEMOD, 'h', 2),
+ ("Source level units", EXAXIS, 'h', 2),
+ ("Source offset units", EXAXIS, 'h', 2),
+ ("Trigger level units", EXAXIS, 'h', 2),
+ ("Capt/thru length units", EXAXIS, 'h', 2),
+ ("EU label 1", str, 's', 6),
+ ("EU label 2", str, 's', 6),
+ ("Auto carrier on/off", bool, 'h', 2),
+ ("Time average on/off", bool, 'h', 2),
+ ("Auto/fixed resolution", bool, 'h', 2),
+ ("Auto gain on/off", bool, 'h', 2),
+ ("Auto/fixed integrate",bool, 'h', 2),
+ ("Fast average on/off", bool, 'h', 2),
+ ("Overload reject on/off", bool, 'h', 2),
+ ("Chan 1 float/ground", bool, 'h', 2),
+ ("Chan 2 float/ground", bool, 'h', 2),
+ ("Time throughput on/off", bool, 'h', 2),
+ ("Demodulation on/off", bool, 'h', 2),
+ ("EU/volts chan 1", bool, 'h', 2),
+ ("EU/volts chan 2", bool, 'h', 2),
+ ("Manual/auto arm", bool, 'h', 2),
+ ("Demod preview on/off", bool, 'h', 2),
+ ("Delete freq on/off", bool, 'h', 2),
+ ("Lin res Fstart pegged", bool, 'h', 2),
+ ("Swept Fstart pegged", bool, 'h', 2),
+ ("Force length chan 1", decode_float, None, 4),
+ ("Force length chan 2", decode_float, None, 4),
+ ("Expon time constant 1", decode_float, None, 4),
+ ("Expon time constant 2", decode_float, None, 4),
+ ("Sweep time", decode_float, None, 4),
+ ("Sweep rate", decode_float, None, 4),
+ ("Sweep resolution", decode_float, None, 4),
+ ("Sweep integrate time", decode_float, None, 4),
+ ("Auto gain level", decode_float, None, 4),
+ ("Auto gain limit", decode_float, None, 4),
+ ("Source level", decode_float, None, 4),
+ ("EU value chan 1", decode_float, None, 4),
+ ("EU value chan 2", decode_float, None, 4),
+ ("Trigger delay chan 1", decode_float, None, 4),
+ ("Trigger delay chan 2", decode_float, None, 4),
+ ("Integrate var thresh", decode_float, None, 4),
+ ("Capt/thru length", decode_float, None, 4),
+ ("Frequency span", decode_float, None, 4),
+ ("Time record length", decode_float, None, 4),
+ ("Frequency resolution", decode_float, None, 4),
+ ("Time resolution", decode_float, None, 4),
+ ("External sample rate", decode_float, None, 4),
+ ("Sample rate (actual)", decode_float, None, 4),
+ ("Range channel 1", decode_float, None, 4),
+ ("Range channel 2", decode_float, None, 4),
+ ("Preview time", decode_float, None, 4),
+ ("Trigger level", decode_float, None, 4),
+ ("Source dc offset", decode_float, None, 4),
+ ("Fixed sine frequency", decode_float, None, 8),
+ ("Start frequency", decode_float, None, 8),
+ ("Center frequency", decode_float, None, 8),
+ ("Sweep start", decode_float, None, 8),
+ ("Sweep end", decode_float, None, 8),
+ ("Carrier frequency", decode_float, None, 8),
+ ]
+
+def decode_state(data):
+ """
+ Decode the data (as generated by the HP3562A DSA in response to a
+ "DSBN" command), and returns a dict (header)
+
+ header is the dictionnary of the header of the dumped data block,
+ """
+ header, idx = decode_header(data, HEADER)
+ return header
+
+
+def main():
+ import sys
+ import optparse
+ opt = optparse.OptionParser("A simple tool for tracing a dumped trace")
+ opt.add_option('-f', '--filename', default=None,
+ dest='filename',
+ help='Output filename. If not set, read from stdin')
+ opt.add_option('-m', '--mode', default='binary',
+ dest='mode',
+ help='Dumping mode (may be "binary" [default], "ascii" or "ansi")',
+ )
+
+ options, argv = opt.parse_args(sys.argv)
+
+
+ if options.filename is None:
+ print "Can't deal stdin for now..."
+ sys.exit(1)
+ #try:
+ if 1:
+ header = decode_state(open(options.filename, 'rb').read())
+ else:
+ #except Exception, e:
+ print "ERROR: can't read %s an interpret it as a HP3562 trace"%options.filename
+ print e
+ sys.exit(1)
+
+ print format_header(header, HEADER, 100)
+
+if __name__ == "__main__":
+ main()
+ 