Campbell Scientific LoggerNet Datalogger Support Software - Manual (Page 513)

Appendix B. Campbell Scientific File Formats
69.62625, "2010-01-19T07:53:40", 73.69058,
78.82542,
"2010-01-19T17:41:05"
]
},
{
"no": 44,
"time": "2010-01021T00:00:00",
"vals": [
70.85629, "2010-01-20T08:14:40", 74.24667,
77.28296,
"2010-01-20T17:41:51"
]
},
{
"no": 45,
"time": "2010-01-22T00:00:00",
"vals": [
70.90952, "2010-01-21T07:17:08", 74.41795,
78.02577,
"2010-01-21T17:39:01"
]
}
]
}
B.2 Datalogger Data Formats
B.2.1 TOB2 or TOB3
TOB2 and TOB3 files are created when data are retrieved from external PC
cards on dataloggers such as the CR9000, CR5000, and CR1000. The TOB2
file format has been replaced in new dataloggers by the TOB3 file format.
TOB3 format is similar to TOB2 in most respects but differs from TOB2 in the
following ways:
• Frame headers in TOB3 are twelve bytes long rather than eight bytes long.
The additional four bytes contain an unsigned integer with the least
significant byte written first to identify the record number for the first
record in the frame.
• In the TOB3 format, the offset field in the major frame footer no longer
represents the number of frames back to the last minor frame. This
information is used in TOB2 to help accelerate searching for data but is
not considered to be necessary in TOB3 because of the presence of the
record number in the frame header.
B-19