Running Time Packet; Local Magnetic Field Packet; External Time Packet - Advanced Navigation GC-SER-LC Reference Manual

10.10.30

Running Time Packet

Packet ID
Length
Field # Bytes
Offset
1 0
2 4
Table 74: Running time packet
10.10.31

Local Magnetic Field Packet

Packet ID
Length
Field # Bytes
Offset
1 0
2 4
3 8
Table 75: Local magnetic field packet
10.10.32

External Time Packet

Packet ID
Length
Field # Bytes
Offset
1 0
2 4
Table 76: External time packet
10.10.33 Geoid Height Packet
This packet provides the offset between the WGS84 ellipsoid and the EGM96 geoid model at the
current location. This can be used to determine mean sea level height and also depth through the
following equations:
Mean Sea Level Height = Height – Geoid Height
Depth = Geoid Height – Height
Running Time Packet
Data Size
Type
u32 4
u32 4
Local Magnetic Field Packet
Data Size
Type
fp32 4
fp32 4
fp32 4
External Time Packet
Data Size
Type
u32 4
u32 4
GNSS Compass Reference Manual
49
Description
Running time seconds
Microseconds
50
12
Description
Local magnetic field X (mG)
Local magnetic field Y (mG)
Local magnetic field Z (mG)
52
Description
Unix time seconds, see section 10.10.1.4
Microseconds, see section 10.10.1.5
Page 68 of 85
Version 1.1
13/01/2021
8
8