Meinberg GPS170PCI, Руководство пользователя

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Page 24 11 Technical Specications GPS170PCI
11.3 Format of the Meinberg Standard Time String
The Meinberg Standard Time String is a sequence of 32 ASCII characters starting with the STX (start-of-text)
character and ending with the ETX (end-of-text) character. The format is:
<STX>D:dd.mm.yy;T:w;U:hh.mm.ss;uvxy<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 dened below:
<STX> Start-Of-Text, ASCII Code 02h
sending with one bit occuracy at change of second
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)
uv clock status characters (depending on clock type):
u: `#' GPS: clock is running free (without exact synchr.)
PZF: time frame not synchronized
DCF77: clock has not synchronized after reset
` ` (space, 20h)
GPS: clock is synchronous (base accuracy is reached)
PZF: time frame is synchronized
DCF77: clock has synchronized after reset
v: `*' GPS: receiver has not checked its position
PZF/DCF77: clock currently runs on XTAL
` ` (space, 20h)
GPS: receiver has determined its position
PZF/DCF77: clock is syncronized with transmitter
x time zone indicator:
`U' UTC Universal Time Coordinated, formerly GMT
` ` MEZ European Standard Time, daylight saving disabled
`S' MESZ European Summertime, daylight saving enabled
y anouncement of discontinuity of time, enabled during last hour before discontinuity comes in eect:
`!' announcement of start or end of daylight saving time
`A' announcement of leap second insertion
` ` (space, 20h) nothing announced
<ETX> End-Of-Text, ASCII Code 03h
24 Date: 12th July 2012 GPS170PCI