ashtech DG14, Reference Manual

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262 DG14 and DG16 Board & Sensor Reference Manual
Table 8.36 outlines the response message.
Typical MSG message for RTCM type 18:
$GPMSG,18,0000,1747.8,4,0,170,202908.5,GPS,0,200000,0,0,20,4,01
,-8259701.2187,0,0,04,4,01,+5708064.4*53
Table 8.37 outlines the response message.
Table 8.36. Typical MSG Message For RTCM Type 16
Field Description
$GPMSG Header
16 RTCM message type
0000 Station ID
1209.6 Z count in seconds and tenths
5 Sequence number
0 Station health
038 Total number of characters following the time tag
232008.00 Current time in hours, minutes and seconds
TEXT Message content
*71 Checksum
Table 8.37. Typical MSG Message For RTCM Type 18
Field Description
$GPMSG Header
16 RTCM message type
0000 Station ID
1747.8 Z count in seconds and tenths
4 Sequence number
0 Station health
170 Total number of characters following the time tag
202908.5 Current time in hours, minutes and seconds
GPS GPS Constellation
0 L1 frequency used
200000 GPS system time of measurement basis
0 Last message for this satellite