Gst-Gnss Pseudorange Noise Satistics; Gsv-Gnss Satellites In View; Hbt-Heartbeat Supervision Sentence; Hdg-Heading, Deviation And Variation - Furuno GP-170 Installation Manual

APPENDIX 1 DIGITAL INTERFACE (IEC 61162-1 EDITION 4 (2010-11))

GST-GNSS pseudorange noise satistics

$**GST,hhmmss.ss,x.x,x.x,x.x,x.x,x.x,x.x,x.x,*hh<CR><LF>
1 2 3
1. UTC time of the GGA or GNS fix associated with this sentence
2. RMS value of the standard deviation of the range inputs to the navigation process.
Range inputs include pseudoranges and DGPS corrections.
3. Standard deviation of semi-major axis of error ellipse, (m)
4. Standard deviation of semi-minor axis of error ellipse (m)
5. Orientation of semi-major axis of error ellipse (degrees from true north)
6. Standard deviation of latitude error, (m)
7. Standard deviation of longitude error, (m)
8. Standard deviation of altitude error, (m)

GSV-GNSS satellites in view

$**GSV,x,x,xx,xx,xx,xxx,xx.........,xx,xx,xxx,xx,h*hh<CR><LF>
1 2 3 4 5 6 7
1. Total number of messages (1 - 9)
2. Message number (1 - 9)
3. Total number of satellites in view
4. Satellite ID number
5. Elevation, degrees
6. Azimuth, degrees true
7. SNR(C/No) (NULL when not tracking)
8. Second and third SVs
9. Fourth SV
10. Signal ID

HBT-Heartbeat supervision sentence

$**HBT,x.x,A,x*hh<CR><LF>
1 2 3
1. Configured repeat interval (00.0 to 99.9(s))
2. Equipment status (A=Normal V=System fail)
3. Sequential sequence identifier (0 to 9)

HDG-Heading, deviation and variation

$**HDG,x.x,x.x,a,x.x,a*hh<CR><LF>
1 2 3 4 5
1. Magnetic sensor heading, degrees
2. Magnetic deviation, degrees
3. E/W
4. Magnetic variation, degrees
5. E/W
HDM-Heading, Magnetic
$ ** HDM, x.x, M *hh <CR><LF>
1 2
1. Heading, degrees
2. Magnetic (M)
AP-12
4 5 6 7 8
8 9 10