GLOBALSAT ET-314 GPS Engine Board - Manual (Page 20)

ET-314AC
High Performance GPS Engine Board
2010/4/1
- 20 -
F). Development Data On/Off ID: 105 Switch Development Data Messages On/Off
This command turns development data (debug messages) on and off. Development data can be
used to help diagnose system problems since many parts of the software contain messages that
are output when problems are detected.
Table B-10 contains the input values for the following example:
$PSRF105,1*3E
Table B-10 Development Data On/Off Data Format
Name Example Unit Description
Message ID $PSRF105 PSRF105 protocol header
Debug 1 0=Off, 1=On
Checksum *3E
End of message termination
G). Select Datum ID: 106 Selection of datum to be used for coordinate Transformations
This message allows the selection of an alternate map datum. The receiver software may contain
one or more alternate datums in addition to WGS84, the default GPS datum. The table below lists
some datums that may be in a particular software build. In addition, other datums may have been
added by either SiRF or by developers with SDK software access. Avaliable datums, if different
from the list below, should be documented in the system or software documentation.
Table B-11 contains the input values for the following examples:
1. Datum select TOKYO_MEAN
$PSRF106,178*32
Table B-11 Select Datum Data Format
Name Example Unit Description
Message ID $PSRF106 PSRF106 protocol header
Datum 178 21=WGS84
178=TOKYO_MEAN
179=TOKYO_JAPAN
180=TOKYO_KOREA
181=TOKYO_OKINAWA
Checksum *32
End of message termination