Symmetricom TimeProvider 2700 User Manual

304 TimeProvider 2300/2700 User’s Guide 098-00564-000 Revision A3 – July, 2013
Appendix B Specifications and Factory Defaults
Specifications
Table B-17. TOD China Mobile Message Details
Message Type Class ID Length (bytes)
Time Information 0x01 0x20 16
Time Status 0x01 0x03 16
Table B-18. TOD China Mobile Time Information Message Payload Contents
Byte Offset
Data
Type
Name Unit Notes
0 U4 Time of week (TOW) - GPS Second time of week
4 I4 Reserved - Reserved
8 U2 Week number - GPS week (GPS time)
10 I1 LeapS s Leap Seconds (GPS-UTC)
11 U1 1PPS status - 0x00 = normal
0x01 = Time sync equipment
(atomic clock) in holdover mode
0x02 = do not use
0x03 = Time sync equipment
(high stability crystal clock) in
holdover mode
0x04 = Transport carrier
equipment in holdover mode
Other values: reserved
12 U1 TAcc - PPS jitter category (0 - 255):
0 = 0 ns
1 = 15 ns
2 = 30 ns
…
255 = no defined
Note: this value is fixed to 255
for transmission and base
station equipment
13 U1 Reserved - Reserved
14 U1 Reserved - Reserved
15 U1 Reserved - Reserved

Symmetricom TimeProvider 2700 Specifications

General

Brand	Symmetricom
Model	TimeProvider 2700
Category	Network Hardware
Language	English