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Chapter 9
DL-4 Logs
9.10 FILEHDR
Structure:
Logfile Header
Message ID = 147
Log Type: Polled
Field
164
Data
Description
Bytes
Format
Units
Offset
-
-
0
1
Header
2
FileName
File name at creation
12
Char
3
FileSize
File size
4
Ulong
4
MinSats a
Minimum SVs used for pos
logs
4
Ulong
H+16
5
StartGPSWeek a
GPS Week of first log
4
Ulong
H+20
6
EndGPSWeek a
GPS Week of last log
4
Ulong
H+24
7
StartGPSmSec a
GPS Seconds of first log
4
GPSs b
ms, s
H+28
8
EndGPSmSec a
GPS Seconds of last log
4
GPSs b
ms, s
H+32
9
Reserved for future use
4
Int
H+36
10
8
Double
H+40
11
4
Ulong
H+48
12
4
Ulong
H+52
H
bytes
H+12
13
FileStatus
File status information, see
Table 91 on Page 165
4
Hexulong
H+56
14
VersionP
File position of the first
versionb log
4
Ulong
H+60
15
TimeP
File position of the first
timeb log
4
Ulong
H+64
16
ProjectP
File position of the first
projectdefb log
4
Ulong
H+68
17
GroupP
File position of the first
groupdefb log
4
Ulong
H+72
DL-4 User Manual Rev 3