APPENDIX
AP-8
2. Digital Interface
Input sentences
ABK, ACK, ACN, BWC*, BWR*, DBS, DBT, DPT, DTM, GGA, GLL, GNS, HBT, HDT, MTW,
MWV, RMB, RMC, RTE, THS, VBW, VDR, VHW, VTG, VWR, VWT, WPL,
ZDA, !AIVDM, !AIVDO, $AIALR
Output sentences
ABM, ALC, ALF, ALR, ARC, BBM, EVE, HBT, OSD, RSD, TLB, TLL*, TTD, TTM, VSD
*: Not available on IMO radar
Data reception
Data is received in serial asynchronous form in accordance with the standard referenced in
IEC 61162-2.
The following parameters are used:
Baud rate: 38,400 bps: HDT, THS, !AIVDM, !AIVDO and $AIALR.
All other sentences: 4800 bps
Data bits: 8 (D7 = 0), Parity: none, Stop bits: 1
D0 D1 D2 D3 D4 D5 D6 D7
Start
bit
Stop
bit
Data bits
Validity and integrity of input data (mode indicator)
Data indication HDG Latitude and
Longitude
SPD COG/SOG WP
GREEN color
(normal data)
THS-A
HDT
GNS-A,D*
GGA-1 2,3,4,5*
GLL-A,D and (status:
A)*
RMC- A,D and (status:
A)*
VBW-A
VHW
VTG-A,D,P
BWC-A,D
BWR-A,D
RMB-A,D and status A
YELLOW-ORANGE
color
(invalid data)
GNS-E,M,S,N
GGA-0,6,7,8
GLL-E,M,S,N or
(status:V)
RMC-E,M,S,N or
(status:V)
VBW-V
VTG-E,M,S,N
***.*
THS-E, M, S, V
BWC-E,M,S,N
BWR-E,M,S,N
RMB-E,M,S,N or
(status:V)
* Low or doubtful integrity can occur when the GBS sentence gives RAIM error rate of 10 m
or higher and "Age of differential GPS data" in GGA and GNS sentences is 10 seconds or
higher. In this case the ship's latitude and longitude indications are shown in yellow.
To Next Page
Loading...
