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Format of the sat time string – Meinberg GPS164xHS User Manual

Page 27

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27

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:

tt.mm.jj/w/hh.mm.ssMEzzxy

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)

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)

zz

time zone indicator:

‘Z ‘ MEZ

European Standard Time, daylight saving disabled

‘SZ’ MESZ European Summertime, daylight saving enabled

x

clock status characters:
‘*’

DCF77 clock currently runs on XTAL

GPS receiver has not checked its position

‘ ‘

(space, 20h) DCF77 clock is sync'd with transmitter
GPS receiver has determined its position

y

announcement 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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