Spectracom Format - Spectracom VersaSync User Manual

APPENDIX
Sync Status
Modified Julian Date
Time
Leap Second

5.3.10 Spectracom Format 7

This format provides a time data stream with millisecond resolution. The Format 7 data stream
consists of indicators for time synchronization status, leap second and Daylight Saving Time.
Time data reflects UTC time and is in the 24-hour format. Format 7 data structure is shown
below:
E x a m p l e m e s s a g e :
CR LF I^YY^DDD^HH:MM:SS.SSSL^D CR LF
Where:
CR
LF
I
YY
^
DDD
HH
:
MM
SS
.
258
Time synchronized to GNSS.
50085
12:45:36.1942 UTC
A leap second is scheduled at the end of the month.
Note: Format 7 cannot be configured for a Time Zone Offset or with automatic
Daylight Saving Time adjustment. Attempting to configure a Local clock using
Data Format 7 with either a Time Zone Offset or automatic DST rule will result in
an error message.
Carriage Return
Line Feed
Time Sync Status (space, ?, *)
Year without century (99, 00, 01, etc.)
Space separator
Day of Year (001-366)
Hours (00-23 UTC time)
Colon separator
Minutes (00-59)
Seconds (00-60)
Decimal Separator
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