u-blox ZED-F9P Interface Description - Manual
Advance Information
5.17 UBX-TIM (0x0D)
Timing Messages: i.e. Time Pulse Output, Time Mark Results.
Messages in the TIM class are used to output timing information from the receiver, like Time Pulse and Time
Mark measurements.
5.17.1 UBX-TIM-TM2 (0x0D 0x03)
5.17.1.1 Time mark data
Message
UBX-TIM-TM2
Description
Time mark data
Firmware
Supported on:
•
u-blox 9 with protocol version 27
Type
Periodic/Polled
Comment
This message contains information for high precision time stamping / pulse counting.
The delay figures and timebase given in
are also applied to the time results
output in this message.
Header
Class
ID
Length (Bytes)
Payload
Checksum
Message Structure
0xB5 0x62
0x0D 0x03 28
see below
CK_A CK_B
Payload Contents:
Byte Offset
Number
Format
Scaling
Name
Unit
Description
0
U1
-
ch
-
Channel (i.e. EXTINT) upon which the pulse was
measured
1
X1
-
flags
-
Bitmask (see
)
2
U2
-
count
-
rising edge counter.
4
U2
-
wnR
-
week number of last rising edge
6
U2
-
wnF
-
week number of last falling edge
8
U4
-
towMsR
ms
tow of rising edge
12
U4
-
towSubMsR
ns
millisecond fraction of tow of rising edge in
nanoseconds
16
U4
-
towMsF
ms
tow of falling edge
20
U4
-
towSubMsF
ns
millisecond fraction of tow of falling edge in
nanoseconds
24
U4
-
accEst
ns
Accuracy estimate
Bitfield flags
This graphic explains the bits of
flags
UBX-18010854 - R04
Advance Information
Page 182 of 259
