User's Manual
Table Of Contents
- Safety Information
- Introduction
- Trimble R7 GPS Receiver
- Overview
- Setting up the Receiver
- General Operation
- Configuration
- Transferring Data
- Software Utilities
- Specifications
- Default Settings
- Cables and Connectors
- Event Marker Input and 1PPS Output
- Trimble R8 GPS Receiver
- Overview
- Setting up the Receiver
- General Operation
- Configuration
- Software Utilities
- Specifications
- Default Settings
- Cables and Connectors
- Appendixes Trimble R7 / Trimble R8
- NMEA-0183 Output
- RTCM Output
- Troubleshooting
- Index
Trimble R7/R8 GPS Receiver User Guide 179
NMEA-0183 Output A
Trimble R7/R8 GPS Receiver Operation
ZDA UTC Day, Month, And Year, and Local Time Zone Offset
An example of the ZDA message string is shown below. Table A.16
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.
Table A.16 ZDA message fields
Field Meaning
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