User`s guide

Table B-8. SDF_SCANS_BIG (Scan big record)
Field
Index
Binary
Index*
Field Name/Description
Data
Type
Range/
Units
1 1:2 recordType short 18
2 3:6 recordSize long 20
3 7:10 unique_record — byte offset from the beginning of the file to a
record containing an instrument-specific scan big header. May
be ignored if recalled into a different type instrument.
long
−1:(2
31
) 1
4 11:14 num_of_scan — number of times the instrument collected a
complete set of x- and y-axis vectors for all scan-based data types.
long
−1:(2
31
) 1
5 15:18 last_scan_index — index of the last valid scan. long 0:(num_of_
scan)−1
6 19:20 scan_type — tells you how the vectors from different scans
are organized in the Y-axis Data record.
0=depth — all scans for the first data type’s vectors
followed by all scans for the second data type’s vectors,
and so on.
1=scan — all data type’s vectors for the first scan
followed by all data type’s vectors for the second scan,
and so on.
short 0:1
Standard Data Format (SDF)
B-22