u-blox ZED-F9P Interface Description - Manual
Advance Information
MGA-INI continued
Byte Offset Number
Format
Scaling Name Unit Description
4 I4 1e-7 lat deg WGS84 Latitude
8 I4 1e-7 lon deg WGS84 Longitude
12 I4 - alt cm WGS84 Altitude
16 U4 - posAcc cm Position accuracy (stddev)
5.12.7.3 UBX-MGA-INI-TIME_UTC
Message
UBX-MGA-INI-TIME_UTC
Description
Initial Time Assistance
Firmware
Supported on:
• u-blox 9 with protocol version 27
Type
Input
Comment
Supplying time assistance that is inaccurate by more than the specified time
accuracy, may lead to substantially degraded receiver performance.
This message allows the delivery of UTC time assistance to a receiver. This message is
equivalent to the UBX-MGA-INI-TIME_GNSS message, except for the time base. See the
description of AssistNow Online for details.
Header Class ID Length (Bytes) Payload Checksum
Message Structure
0xB5 0x62 0x13 0x40 24
see below
CK_A CK_B
Payload Contents:
Byte Offset Number
Format
Scaling Name Unit Description
0 U1 - type - Message type (0x10 for this type)
1 U1 - version - Message version (0x00 for this version)
2 X1 - ref - Reference to be used to set time (see graphic
below)
3 I1 - leapSecs s Number of leap seconds since 1980 (or 0x80 = -
128 if unknown)
4 U2 - year - Year
6 U1 - month - Month, starting at 1
7 U1 - day - Day, starting at 1
8 U1 - hour - Hour, from 0 to 23
9 U1 - minute - Minute, from 0 to 59
10 U1 - second s Seconds, from 0 to 59
11 U1 - reserved1 - Reserved
12 U4 - ns ns Nanoseconds, from 0 to 999,999,999
16 U2 - tAccS s Seconds part of time accuracy
18 U1[2] - reserved2 - Reserved
20 U4 - tAccNs ns Nanoseconds part of time accuracy, from 0 to
999,999,999
UBX-18010854 - R04 Advance Information Page 119 of 259
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