Campbell Scientific Open Path Eddy Covariance (OPEC) - Manual (Page 19)

OPEC Open-Path Eddy-Covariance System
CompileResults: Reports compile errors.
VarOutOfBound: An element of an array was referenced that does not exist,
e.g., a VarOutOfBound is reported if element wind(9) is referenced in the
program, but the array was defined with 5 elements.
SkippedScan: If the maximum number of buffered scans is exceeded (defined
in the third parameter of the Scan () instruction), the Processing and
Measurement tasks are resynchronized. The resynchronization results in a
number of SkippedScan equal to the buffer depth.
DataFillDays(): The number of days to fill a table in both the CPU and CRD
memory. The number of days to fill a table is reported in the same order they
are found in the “Status” table, e.g., the same order they are defined in the
program.
CardStatus: Indicates if a card is used by the program or not.
ProcessTime: Time, in microseconds, it takes the datalogger to complete all
the processing. In the Sequential mode, this value must always be less than the
Scan Interval. In the PipeLine mode, this value can occasionally be greater
than the Scan Interval, e.g., when the 30 minute fluxes are computed. With the
Eddy-Covariance systems, always use the Pipeline mode.
BuffDepth: The current number of Scans that the datalogger Processing tasks
have fallen behind the Measurement tasks. In the Pipeline Mode, the
datalogger processing task can periodically fall behind the Scan Interval.
MaxBuffDepth: The maximum number of Scans that the Processing tasks
have fallen behind the Measurement tasks.
4. Data
Each system requires an Open-Path Eddy-Covariance program (p/n 18442 or
18443). The data table outputs of the programs are described in a Microsoft
®
Excel document (shipped with the program). The description includes the
variable name and units. There is one sheet (tab) per output.
The datalogger programs are protected under U.S. and
International copyright laws. Do not distribute the datalogger
programs. See the End User License Agreement (EULA) shipped
with the programs for more information on your rights and
obligations. NOTE
Data is saved on the PC/CF card as a binary file in a Campbell Scientific
format called Table Oriented Binary Format 3 (TOB3). TOB3 incorporates
features to improve reliability of the card and allows for the accurate
determination of each record’s time without the space required for individual
time stamps.
Before the data can be used, it must be converted to a Table Oriented Binary
Format 1 (TOB1), Table Oriented ASCII Format 5 (TOA5), or Array
Compatible CSV file. In all of these formats, the time stamp is written to each
record. In the TOB1 format, the time stamp is reported as the number of
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