Spectracom SecureSync User Reference Manual page 424

5.5 Network Interface Option Cards
Advanced tab: Status information
The Advanced tab provides the following information:
Time Properties:
UTC Offset : The Master's current offset between UTC time and TAI time. Units: seconds.
UTC Offset Valid : Indicates whether or not the Master's UTC Offset is valid.
Leap Second : The Leap second correction as set on the Time Management page.
Time Traceable : Indicates whether the Master's time is traceable (Enabled) to a primary
reference or not (Disabled).
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 relative
to its UTC reference. (See IEEE Standard 1588-2008, Section 7.6.2.5).
Offset Scaled Log Variance : (Defined in IEEE Standard 1588-2008, Section 1.6.3)
Clock Class : A number describing the state of the time and 1pps references of the PTP
Clock.
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5 SecureSync User Reference Guide Rev. 18