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Format of the sat time string – Meinberg GPS170LCD-MP User Manual

Page 44

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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:

dd.mm.yy/w/hh:mm:ssxxxxuv

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:

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 effect:

‘!’

announcement of start or end of daylight saving time

‘ ‘

(space, 20h) nothing announced

Carriage Return, ASCII Code 0Dh

Line Feed, ASCII Code 0Ah

End-Of-Text, ASCII Code 03h

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