Campbell Scientific AP200 CO2/H2O Atmospheric Profile System - Manual (Page 90)

Appendix D. Output Tables
AUTO_ZEROSPAN, CAL_INTERVAL, and CAL_TIMEOFFSET. The
next value, sync_interval, is calculated by the program. It is the duration of
the valve sequence in seconds. This value is used by the program to
synchronize the valve sequence to the real-time clock. For example, if
sync_interval is 90 s, the sequence will start at the top of the hour, or 1:30
later, or 3:00 later, etc.
The rest of the TimeInfo contains the arrays of timing parameters. Each array
holds eight values, where the index corresponds to the index in the sequence. If
LEVELS_USED is less than 8, zero is stored for the parameters that are not
used.
ProfileSequence: the valve number for this step in the profile sequence. This
will simply increment from 1 to LEVELS_USED.
ProfileOnCounts: the time (number of scans) to spend at this step, typically
30 counts (15 s).
ProfileOmitCounts: the time (number of scans) to wait after a valve switch
before including data in the averages, typically 20 scans (10 s).
The next arrays contain the corresponding values for the calibration (zero/span)
sequence.
TABLE D-5. Variables of the
TimeInfo Table
Name Units
TIMESTAMP TS
RECORD RN
LEVELS_USED
MEASURE_TANKS
AUTO_ZEROSPAN
CAL_INTERVAL min
CAL_TIMEOFFSET min
sync_interval s
ProfileSequence(1)
ProfileSequence(2)
ProfileSequence(3)
ProfileSequence(4)
ProfileSequence(5)
ProfileSequence(6)
ProfileSequence(7)
ProfileSequence(8)
ProfileOnCounts(1)
D-10