098-00564-000 Revision A3 – July, 2013
TimeProvider 2300/2700 User’s Guide
305
Appendix B Specifications and Factory Defaults
Specifications
Table B-19. TOD China Mobile Time Status Message Payload Contents
Byte Offset
Data
Type
Name
Unit
Notes
0
U1
Clock source type
-
0x00 = GLONASS
0x01 = GPS
0x02 = 1588
0x03 = others
1
U2
Status of the clock
source
-
GPS fix type, range 0 - 3
0x00 = no fix
0x01 = dead reckoning only
0x02 = 2D fix
0x03 = 3D fix
0x04 = GPS + dead reckoning
combined
0x05 = reserved
0x06 = tracking (PTP only)
0x07 - 0xff = reserved
3
U2
Monitor alarm
-
Clock source status alarms:
Bit 0: Reserved
Bit 1: Antenna open
Bit 2: Antenna shorted
Bit 3: Not tracking satellites
Bit 4: Reserved
Bit 5: Survey in progress
Bit 6: No stored position
Bit 7: Leap second pending
Bit 8: In test mode
Bit 9: Position is questionable
Bit 10: Reserved
Bit 11: Almanac not complete
Bit 12: Reserved
Note:
For GNSS only.
For other references, only bits
1, 2, and 7 are used.
5
U1
Reserved
-
-
6
U1
Reserved
-
-
7
U1
Reserved
-
-
8
U4
Reserved
-
-
12
U4
Reserved
-
-