SEPTENTRIO PolaRx5TR, Reference Manual

Page: 494 / 512

APPENDIX C. LIST OF NMEA SENTENCES
C.1.8 TFM : Used RTCM Coordinate Transforma-
tion Messages
This proprietary sentence indicates which RTCM coordinate transformation messages have
been received and used in the position computation.
Field Description
$PSSN,TFM, Start of sentence
hhmmss.ss, UTC time (HoursMinutesSeconds.DecimalSeconds)
x, Height indicator, a copy of the Height Indicator field in RTCM message 1021 or 1022. Null if
unknown.
xxxx,
Message 1021/1022 usage (they are exclusive). Possible field values:
1021: Message type 1021 used;
1022: Message type 1022 used;
null: neither 1021 nor 1022 used.
xxxx,
Message 1023/1024 usage (they are exclusive). Possible field values:
1023: Message type 1023 used;
1024: Message type 1024 used;
null: neither 1023 nor 1024 used.
xxxx
Message 1025/1026/1027 usage (they are exclusive). Possible field values:
1025: Message type 1025 used;
1026: Message type 1026 used;
1027: Message type 1027 used;
null: neither 1025 nor 1026 nor 1027 used.
*hh Checksum delimiter and checksum field
<CR><LF> End of sentence
Example:
$PSSN,TFM,104751.00,2,1021,1023,1025*5F
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