u-blox ZED-F9P - Page 124

u-blox ZED-F9P Interface Description - Manual
Advance Information
5.12.6.3 UBX-MGA-GPS-HEALTH
Message
UBX-MGA-GPS-HEALTH
Description
GPS Health Assistance
Firmware
Supported on:
• u-blox 9 with protocol version 27
Type
Input
Comment
This message allows the delivery of GPS health assistance to a receiver. See the description
of AssistNow Online for details.
Header Class ID Length (Bytes) Payload Checksum
Message Structure
0xB5 0x62 0x13 0x00 40
see below
CK_A CK_B
Payload Contents:
Byte Offset Number
Format
Scaling Name Unit Description
0 U1 - type - Message type (0x04 for this type)
1 U1 - version - Message version (0x00 for this version)
2 U1[2] - reserved1 - Reserved
4 U1[32] - healthCode - Each byte represents a GPS SV (1-32). The 6
LSBs of each byte contains the 6 bit health code
from subframes 4/5 page 25.
36 U1[4] - reserved2 - Reserved
5.12.6.4 UBX-MGA-GPS-UTC
Message
UBX-MGA-GPS-UTC
Description
GPS UTC Assistance
Firmware
Supported on:
• u-blox 9 with protocol version 27
Type
Input
Comment
This message allows the delivery of GPS UTC assistance to a receiver. See the description of
AssistNow Online for details.
Header Class ID Length (Bytes) Payload Checksum
Message Structure
0xB5 0x62 0x13 0x00 20
see below
CK_A CK_B
Payload Contents:
Byte Offset Number
Format
Scaling Name Unit Description
0 U1 - type - Message type (0x05 for this type)
1 U1 - version - Message version (0x00 for this version)
2 U1[2] - reserved1 - Reserved
4 I4 2^-30 utcA0 s First parameter of UTC polynomial
8 I4 2^-50 utcA1 s/s Second parameter of UTC polynomial
12 I1 - utcDtLS s Delta time due to current leap seconds
13 U1 2^12 utcTot s UTC parameters reference time of week (GPS
time)
14 U1 - utcWNt weeks UTC parameters reference week number (the 8
bit WNt field)
UBX-18010854 - R04 Advance Information Page 116 of 259