5.4.10 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:
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.
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 Carriage Return
LF Line Feed
I Time Sync Status (space, ?, *)
YY Year without century (99, 00, 01, etc.)
^ Space separator
DDD Day of Year (001-366)
HH Hours (00-23 UTC time)
: Colon separator
MM Minutes (00-59)
SS Seconds (00-60)
. Decimal Separator
SSS Milliseconds (000-999)
L Leap Second Indicator (space, L)
D Daylight Saving Time Indicator (S,I,D,O)
The leading edge of the first character (CR) marks the on-time point of the data stream.
The time synchronization status character (I) is defined as described below:
530 SecureSync User Reference Guide
APPENDIX
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