| Usage: | bref [options] [Directory]
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| Description : | display Reference bolometer signal, HSK and PSD
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| Select Sample option:
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| -start=START | first sample (DEFAULT is to read from end)
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| -t0=TIME | UT time of first sample : [[[[[[cc]yy:]mm:]dd:]HH:]MM[.SS]]
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| -dt=TIME | Length in time of the data loaded in memory : [[[[[[cc]yy:]mm:]dd:]HH:]MM[.SS]]
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| -boxcar=NUM | number of sample averaged together (DEFAULT is 0)
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| -num=NUM | number of sample read (DEFAULT is 8192) (-1 means read to end / realtime)
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| -skip=NUM | number of sample skipped (DEFAULT is 0)
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| Select Data Type option:
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| -units=UNITS | o[hm] | v[olt] | k[elvin] (default is ADU)
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| -nodemodulation | don't do demodulation of averaged signal (only in -units=ADU and -units=V modes)
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| Display option:
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| -pmin=VALUE | set the minimum value of the Yaxis for PSD (default is min(PSD))
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| -pmax=VALUE | set the maximum value of the Yaxis for PSD (default is max(PSD))
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| -timing | display FTS Timing Information (SensPlus and SensMoins)
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| -nsens=VALUE | set the number of sample read for SensPlus and SensMoins (default is all sample)
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| Other option:
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| -file=FILE | will write the kst file in FILE and will not launch KST
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| -dtpng=sec | time in seconds between each screen capture
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| -help | display this help
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| -png=FILE | save periodically a screen capture as a PNG file
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| Arguments:
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| Directory | The directory of the database.
if Directory is omitted, allchannel
will use the one given by $PIODATABASE_DIR
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