Spectracom SecureSync 1200 User Reference Manual page 481

Frequency Traceable : Indicates whether the Master's Frequency is traceable (Enabled) to
a primary reference or not (Disabled).
PTP Time Scale : Indicates the timescale that the Master is using to broadcast its time. TAI
is the default PTP timescale.
Time source : The Time Source that the Master is using. Refer to IEEE Standard 1588-
2008, Section 7.6.2.6.
Clock Quality:
Clock Accuracy : A number describing the accuracy of the oscillator in the Master rel
ative to its UTC reference (see IEEE Standard 1588-2008, Section 7.6.2.5).
Offset Scaled Variance : A constant value based on the variance of the oscillator
installed in the SecureSync unit.
Clock Class : A number describing the state of the time and 1pps references of the PTP
Clock.
See table below for Clock Class definitions (see also: IEEE Standard 1588-2008, Sec
tion 7.6.2.4, Table 5).
Table 5-24:
Clock class definitions
PTP Arbitrary
Time Time
Scale Scale
6 13
7 14
52 58
187 193
255 255
248 248
Ethernet Status
Current IP Address : The IP address currently being used by the PTP interface.
SecureSync User Reference Guide
Time and 1pps references are synchronized with the host references and PTP clock shall
not be a slave to another clock in the domain.
Time and 1pps references are in holdover state, within specifications and PTP clock shall
not be a slave to another clock in the domain.
Time and 1pps references are in holdover state, not within specifications, and PTP clock
shall not be a slave to another clock in the domain. Then, applied to Master Clocks who
have just powered on and have not yet achieved a suitable TFOM value.
Time and 1pps references are in holdover state, not within specifications, and PTP clock
may be a slave to another clock in the domain.
Class assigned to "Slave-Only" clocks.
"Unknown" class.
Clock Class Definition
APPENDIX
465