Nexus HPC Compass, Installation And Operation Manual

Page: 13 / 17

English
NMEA HPC COMPASS
13-12
HPR Transducer Measurements (proprietary data)
1 2 3 4 5 6 7
| | | | | | |
$PTNTHPR,x.x,a,x.x,a,x.x,a *hh
1) Heading
2) N for Number
3) Pitch in degrees
4) N for Number
5) Roll in degrees
6) N for Number
7) checksum
Checksum
The checksum is the 8-bit exclusive OR (no start or stop bits)
of all characters in the sentence,
including “,” and “^” delimiters, between but not including “$” or “!” and the “*” delimiters.
The hexadecimal value of the most significant and least significant 4 bits of the result is
converted to two ASCII characters (0-9, A-F (upper case)) for transmission. The most
significant character is transmitted first.