GNSS Compass Reference Manual
Page 81 of 85
Version 1.1
13/01/2021
10.11.7.2
Transmit Functions
Value
Description
0
Inactive
7
NMEA Output (default)
12
ANPP Output
39
TSS1 Output
40
Simrad 1000 Output
41
Simrad 3000 Output
42
Serial Port Pass-through
Table 102: Port transmit functions
10.11.7.3
Receive Functions
Value
Description
0
Inactive
6
NMEA Input
11
ANPP Input
19
RTCM Differential Corrections Input (default)
42
Serial Port Pass-through
Table 103: Port receive functions
10.11.8
Set Zero Orientation Alignment Packet
Set Zero Orientation Alignment Packet
Packet ID
193
Length
5
Field #
Bytes
Offset
Data
Type
Size
Description
1
0
u8
1
Permanent
2
1
u32
4
Verification sequence (set to 0x9A4E8055)
Table 104: Set zero orientation alignment packet
10.11.9
Reference Point Offsets Packet
The reference point offsets packet can be used to adjust the measurement point that all data is
referenced to. By default all the values of this packet are zero and the measurement point that all
data is referenced to is the centre of the GNSS Compass unit. The primary reference point offset
can be used to adjust the measurement point to a different location on the vehicle. The primary
reference point offset applies to all data output including NMEA etc as well as heave point 1. The
other heave point offsets apply only to heave points 2-4 in the Heave Packet.
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