Spectracom NetClock 9400 Series, Руководство пользователя

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003.1,W Magnetic Variation
*6A Checksum data, always begins with *
5.4.3 NMEA ZDA Message
The Format ZDA Data message provides Date and Time information.
E x a m p l e m e s s a g e :
$GPZDA,HHMMSS.00,DD,MM,YYYY,XX,YY*CC
Where:
HHMMSS.00 HrMinSec(UTC)
DD,MM,YYYY Day, Month, Year
XX Local zone hours -13…13
YY Local zone minutes 0…59
*CC Checksum
5.4.4 Spectracom Format 0
Format 0 is the universal NENA format, along with formats 1, 2, and 3. Format 0 includes a
time synchronization status character, day of year, time reflecting Time Zone Offset and DST
corrections when enabled. Format 0 also includes the DST/Standard Time indicator, and the
Time Zone Offset value. Format 0 data structure is shown below:
E x a m p l e m e s s a g e :
CR LF I ^ ^ DDD ^ HH:MM:SS ^ DTZ=XX CR LF
Where:
CR Carriage Return
LF Line Feed
I Time Sync Status (space, ?, *)
^ Space separator
DDD Day of Year (001-366)
NetClock User Reference Guide 389
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