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EndRun Formats
The following formats provide compatibility with EndRun technology.
EndRun Time Format
Example message:
T YYYY DDD HH:MM:SS zZZ m<CR><LF>
Where:
EndRunX (Extended) Time Format
The EndRunX format is identical to the EndRun format, with the addition of two fields: the current leap second settings and the future leap second settings.
The following example message string is sent once each second:
T YYYY DDD HH:MM:SS zZZ m CC FF<CR><LF>
Where:
T | Time Figure of Merit character (TFOM), limited to the range 6 to 9: 9 indicates error >±10 milliseconds, or unsynchronized condition 8 indicates error <±10 milliseconds 7 indicates error <±1 millisecond 6 indicates error <±100 microseconds |
YYYY | Year |
DDD | Day of Year (001-366) |
HH | Hour of the day (00-23) |
: | Colon Separator |
MM | Minutes of the hour |
SS | Seconds (00-59), (00-60 for leap second) |
z | The sign of the offset to UTC, + implies time is ahead of UTC |
ZZ | The magnitude of the offset to UTC in units of half-hours. If ZZ = 0, then z = + |
m | Time mode character, is one of: G = GPS L = Local U = UTC T = TAI |
CC | The current leap seconds |
FF | The future leap seconds, which will show a leap second pending 24 hours in advance |
CR | Carriage Return |
LF | Line Feed |