Meinberg TCG510 - Manual (Page 17)

17
Format of the Uni Erlangen String (NTP)
The time string Uni Erlangen (NTP) of a GPS-clock is a sequence of 68 ASCII
characters starting with the STX (start-of-text) character and ending with the ETX (end-
of-text) character. The format is:
<STX>tt.mm.jj; w; hh:mm:ss; voo:oo; acdfg i; bbb.bbbbn llll.lllle hhhhm<ETX>
The letters printed in italics are replaced by ASCII numbers whereas the other characters
are part of the time string. The groups of characters as defined below:
<STX> Start-Of-Text (ASCII code 02h)
dd.mm.yy the current date:
dd day of month (01..31)
mm month (01..12)
yy year of the century (00..99)
w the day of the week (1..7, 1 = Monday)
hh.mm.ss the current time:
hh hours (00..23)
mm minutes (00..59)
ss seconds (00..59, or 60 while leap second)
v sign of the offset of local timezone related to UTC
oo:oo offset of local timezone related to UTC in hours and minutes
ac clock status characters:
a: ‘#’ clock has not synchronized after reset
‘ ‘ (space, 20h) clock has synchronized after reset
c: ‘*’ GPS receiver has not checked its position
‘ ‘ (space, 20h) GPS receiver has determined its position
d time zone indicator:
‘S’ MESZ European Summertime, daylight saving enabled
‘ ‘ MEZ European Standard Time, daylight saving disabled
f anouncement of discontinuity of time, enabled during last hour
before discontinuity comes in effect:
‘!’ announcement of start or end of daylight saving time
‘ ‘ (space, 20h) nothing announced