Meinberg GPS170LCD-MP Bedienungsanleitung PDF herunterladen (Seite 45)

Format of the Uni Erlangen String (NTP)

The time string Uni Erlangen (NTP) of a GPS clock is a sequence of 66 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 lll.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

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)

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

g anouncement of discontinuity of time, enabled during last hour

before discontinuity comes in effect:

‘A’ announcement of leap second insertion

‘ ‘ (space, 20h) nothing announced

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 67 68

Keine Kommentare

Meinberg GPS170LCD-MP Bedienungsanleitung Seite 45