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System Description

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System Description and Installation Manual for MXS ICD10004-01
© Sagetech Corporation 2018 Confidential Proprietary Export-Controlled Page 49 of 160
Hemisphere/Data Status
Byte
Offset
Byte
Name
Field Description
35
GHB0
GHB0 Hemisphere and GPS Data Status
0x00
0x01
0x82
0x03
0x43
...
S hemisphere, W hemisphere; No SVERROR fault, GPS data is valid
N hemisphere, W hemisphere; No SVERROR fault, GPS data is valid
S hemisphere, E hemisphere; No SVERROR fault, GPS data is invalid
N hemisphere, E hemisphere; No SVERROR fault, GPS data is valid
N hemisphere, E hemisphere; SVERROR fault, GPS data is valid
...
Hemisphere & GPS Data Status Byte
The Hemisphere bits consists of the following information:
Bit 0: N / S Hemisphere indicator. Zero indicates that the latitude is South. One indicates that the latitude
is North.
Bit 1: E / W Hemisphere indicator. Zero indicates that the longitude is West. One indicates that the
longitude is East.
Bit 2 - 5: Reserved
GPS Data Status bits provide the following information:
Provides the MXS with GPS data, including - latitude, longitude, height, groundspeed, track, and
validity, accuracy and integrity measurements.
Bit 6: SVERROR State Bit. If set to ONE the GPS receivers Fault Detection and Exclusion (FDE)
functions has detected a satellite failure that cannot be excluded within the time-to-alert. If set to ZERO
the FDE has not detected any satellite failures or has detected and excluded the failed satellite from the
position solution.
Bit 7: Navigation receiver status bit. If set to ZERO indicates that the GPS data is valid, if set to ONE
GPS data is invalid.
Time of Fix (UTC)
Byte
Offset
Byte
Name
Field Description
36
TOF0
TOF
0
TOF
1
TOF
2
TOF
3
TOF
4
TOF
5
TOF
6
TOF
7
TOF
8
TOF
9
Time of Fix (UTC)
37 TOF1 0x32
0x31
0x30
...
0x32
0x35
0x38
...
0x33
0x32
0x35
...
0x33
0x34
0x36
...
0x32
0x33
0x30
...
0x33
0x33
0x31
...
0x2E
0x2E
0x2E
...
0x30
0x31
0x30
...
0x30
0x31
0x31
...
0x30
0x30
0x30
...
22:33:23.000 UTC
15:24:33.110 UTC
08:56:01.010 UTC
...
38
TOF2
39
TOF3
40
TOF4
41
TOF5
Time of Fix