User's Manual

SPSx50 Modular GPS Receiver User Guide 131
A
ZDA UTC Day, Month, And Year, and Local Time Zone Offset
An example of the ZDA message string is shown below. Tab le A.17 describes the
message fields.
$GPZDA,172809,12,07,1996,00,00*45
Fields 5 and 6 together yield the total offset. For example, if field 5 is –5 and field 6 is
+15, local time is 5 hours and 15 minutes earlier than GMT.
A
Table A.17 ZDA message fields
Field Meaning
0 message ID $GPZDA
1UTC
2 Day, ranging between 01 and 31
3 Month, ranging between 01 and 12
4Year
5 Local time zone offset from GMT, ranging from 00 to ±13 hours
6 Local time zone offset from GMT, ranging from 00 to 59 minutes
7
The checksum data, always begins with *