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11 Technical Specications GPS170PCI
11.5 Format of the SAT Time String
The SAT Time String is a sequence of 29 ASCII characters starting with the STX (start-of-text) character and
ending with the ETX (end-of-text) character. The format is:
<STX>dd.mm.yy/w/hh:mm:ssxxxxuv<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)
xxxx
time zone indicator:
`UTC`
Universal Time Coordinated, formerly GMT
`MEZ`
European Standard Time, daylight saving disabled
`MESZ'
European Summertime, daylight saving enabled
u
clock status characters:
`#'
clock has not synchronized after reset
` `
(space, 20h) clock has synchronized after reset
v
anouncement of discontinuity of time, enabled during last hour
before discontinuity comes in eect:
`!'
announcement of start or end of daylight saving time
` `
(space, 20h) nothing announced
<CR>
Carriage Return, ASCII Code 0Dh
<LF>
Line Feed, ASCII Code 0Ah
<ETX>
End-Of-Text, ASCII Code 03h
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Date: 12th July 2012
GPS170PCI
