USGlobalsat EM-506 - Manual (Page 18)

EM-506
High Performance GPS Module
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Use this command to enable development debug information if you are having trouble getting
commands accepted. Invalid commands will generate debug information that should enable the
user to determine the source of the command rejection. Common reasons for input command
rejection are invalid checksum or parameter out of specified range. This setting is not preserved
across a module reset.
Format: ＄PSRF105,<debug>*CKSUM<CR><LF>
<debug> 0=Off, 1=On
Example: Debug On ＄PSRF105,1*3E
Example: Debug Off ＄PSRF105,0*3F
G). Select Datum ID: 106 Selection of datum to be used for coordinate Transformations
GPS receivers perform initial position and velocity calculations using an earth-centered earth-fixed
(ECEF) coordinate system. Results may be converted to an earth model (geoid) defined by the
selected datum. The default datum is WGS 84 (World Geodetic System 1984) which provides a
worldwide common grid system that may be translated into local coordinate systems or map
datums. (Local map datums are a best fit to the local shape of the earth and not valid worldwide.)
Examples:
Datum select TOKYO_MEAN
$PSRF106,178*32
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
Debug
Checksum *32
<CR><LF> End of message
termination