Configurable Parameters For Reference Selection; Provisioning The Input Reference - Symmetricom TimeProvider 5000 User Manual

Chapter 4 Provisioning

Provisioning the Input Reference

Provisioning the Input Reference
When operating in normal (locked) mode, the TimeProvider 5000 uses an external
reference (such as GPS) to acquire the system's frequency and/or TOD alignment.
Table 4-14 shows the configurable parameters for reference selection.
Table 4-14. Configurable Parameters for Reference Selection
Parameter
Reference Mode
Reference Criteria
Network Option
Priority
(per port)
QL
(per port)
Reference Port State
(per port)
Setting Reference Mode
The TP 5000 can be in either Time mode or Frequency mode for reference
selection. GPS, GNSS and 1PPS+TOD references inputs are time references. The
E1 and T1 reference inputs are frequency references.
Time Mode
In Time mode with a time reference, the system will track the phase of the input and
the system time will be set from the time of the input reference. With a frequency
input reference, the system will only track the frequency of the reference.
310 TimeProvider 5000 User's Guide
Value Range
Time Selecting "Time" means some outputs need to track

reference time and phase.
Selecting "Frequency" means it is not necessary for
Frequency

the outputs to track reference time and phase.
Priority
 See
SSM

Option I
 
Option II
 
As defined in ITU G.781 and G.8265.1
See
page 318 for details about Network SSM Options
1 to 16
See
1 to 9 GNSS and PPS-TOD ports are hardcoded with QL
value that correspond to PRC/PRS. See
Enable

Disable

Description/Notes
Setting Reference Criteria
SSM Option 1 is for E1 sync networks,
SSM Option 2 is for T1 sync networks.
Synchronization Status Message (SSM)
Setting Input Priority Values
098-00028-000 Revision F – May, 2012
, on page 311.
, on
, on page 312
Table 4-15