Svantek SVAN 979 - Appendix B. Data File Structures (Revision 3.21); Description of Blocks of Parameters

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SVAN 979 User Manual - Appendixes
APPENDIX B. DATA FILE STRUCTURES (revision 3.21)
Each file consists of blocks of parameters followed by the logger data. The number and sequence of the
blocks of parameters may vary depending on the type of measurement performed, however, the header block
(see Table B.1.1) is always first in the file. Each data block consists of a specified number of words. The term
word means two consecutive bytes, with the lower byte preceding the higher. If the words contain ASCII text
characters, the low byte of the word also precedes the high byte. The number of words in a block is constant
(as in the case of a file header) or is defined in the first or second word of a block. Exception is the block of
the primary results record (see Table B.2.1), the length of which depends on the parameters placed in the
respective blocks of parameters. The following chapters describe the structure of each block.
B.1. DESCRIPTION OF BLOCKS OF PARAMETERS
Table B.1.1. File header
Word
number
Name
Comment
0..2
SvanPC
text „SvanPC”
3
001Ah
value 001Ah
4..15
reserved
Table B.1.2. File information
Word
number
Name
Comment
0
0nn01h
01h = block identifier
0nnh = block length in words
1..4
FileName
file name (8 ASCII characters)
5
reserved
6
FileDate
date of file creation
7
FileTime
hour of file creation
…
reserved
Table B.1.3. Unit and software specification
Word
number
Name
Comment
0
0nn02h
02h = block identifier
0nnh = block length in words
1
UnitSubtype
subtype of the instrument:
1 - SVAN 979
2 – SVAN 979u
2
UnitType
device type identifier:
9797 – SVAN 979, SVAN 979u
3..4
UnitNumber
serial number of the instrument
5
FirmwareVersion
firmware version number; for example, value 321 means version 3.21
6
FirmwareSubVer
additional number identifying internal firmware conversion; for
example, the complete software version number is 3.21.5