Appendix A - Propr. Nmea Message - Simrad HS52 Instruction Manual

8. APPENDIX A – PROPR. NMEA MESSAGE
20
horiz-qual
hgt-qual
head-qual
rp-qual
nsat
id
res
hpos-err
vpos-err
csum
term
20222360 / E
APPENDIX A – PROPR. NMEA MESSAGE
This chapter describes the NMEA 0183 proprietary message
PSXN, 20 and the special Ashtech RRE format output from
HS52. The PSXN,20 format is according to IEC 61162-1 and
follows the standard regarding unused fields on talker.
Description:
$PSXN,20,horiz-qual,hgt-qual,head-qual,rp-qual*csum term
$GPRRE,nsat,id,res...id,res,hpos-err,vpos-err*csum term
Explanation:
An identification of this message in a series of PSXN messages
(20 to 24)
Horizontal position and velocity quality: 0 = normal, 1 =
reduced performance, 2 = invalid data.
Height and vertical velocity quality: 0 = normal, 1 = reduced
performance, 2 = invalid data.
Heading quality: 0 = normal, 1 = reduced performance, 2 =
invalid data.
Roll and pitch quality: 0 = normal, 1 = reduced performance, 2
= invalid data.
Number of satellites in use (00 - 99).
Satellite ID number, PRN (01 – 32).
GPS range residual in metres on format m.m (no fraction if the
value is greater than 99.9 metres).
Horizontal position error estimate in metres on format hhh.h
Vertical position error estimate in metres on format vvv.v
Checksum (exclusive or) of all characters between, but not
including, the preceding $ and *, hexadecimal (00 - FF).
CR-LF (2 bytes, values 13 and 10).
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