Model 9289
Spectracom Corporation
NetClock/NTP Network Time Provider Instruction Manual
4-6
3. The Dynamic System Information box in the “System Status” page located under the
web page of “Status and Logs” will display a Leap Second Status box indi1 or -1
Leap second adjustment at the end of the month to users during the entire calendar
month preceding the actual adjustment.
4.3.3 Sequence of a Leap Second Correction Being Applied
1. The following is the time output sequence that the Model 9289 will utilize to apply the
Leap second at UTC midnight (Not local time midnight. The Local time at which the
adjustment is made will depend on which Time Zone you are located in).
A) Sequence of seconds output when adding a leap second:
56, 57, 58, 59, 60, 0, 1, 2, 3, …
B) Sequence of seconds output when removing Leap seconds:
56, 57, 58, 0, 1, 2, 3, 4, …
2. An entry will be made in the Operational log that the time was adjusted for a Leap
Second.
A) An example log entry for a Positive Leap Second is as follows:
TIME= 23:59:59 DATE= 2005-12-31
System Clock Service
Leap second inserted at end of month.
B) An example log entry for a Negative Leap Second is as follows:
TIME= 23:59:59 DATE= 2005-12-31
System Clock Service
Leap second removed at end of month.
Summary of Contents for 9289
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