ashtech G12 - Page 180

166 G12 OEM Board & Sensor Reference Manual
The data fields common to each MSG message are listed in Table 4.90:
Table 4.91 lists the remainder of the MSG message for RTCM type 1. The
remainder for RTCM type 9 is identical.
Table 4.92 lists the remainder of the MSG message for RTCM type 2:
Table 4.90. Common MSG Data Fields
Fields Description Range
d1 RTCM message type 1, 2, 3, 6, 9, 16
d2 Station Identifier 0 - 1023
f3 Z count 0 - 9999.9
d4 Sequence number 0 - 9
d5 Station health 0 - 7
d6 Total number of characters following the time tag
(including commas and <CR><LF> characters)
0 - 999
m7 Current GPS time of position fix (hhmmss.ss) 00-235959.90
Table 4.91. Remainder of Type 1
Fields Description Range
d8 User differential range error (UDRE) 0-9
d9 Satellite PRN number 1-32
f10 Pseudo range correction (PRC) in meters ±9999.99
f11 Range rate correction (RRC) in meters/sec ±9.999
d12 Issue of data ephemeris (IODE) 0-999
*hh Checksum 2-character hex
Table 4.92. Remainder of Type 2 Message
Fields Description Range
d8 User differential range error (UDRE) 0-9
d9 Satellite PRN Number 1-32
f10 Delta pseudo range correction (Delta PRC) in meters
±99.99
f11 Delta range rate correction (Delta RRC) in meters/sec
±9.999
G12RevD.book Page 166 Tuesday, April 2, 2002 4:33 PM