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APPENDIX 3 DIGITAL INTERFACE
AP-30
RSD - Radar system data
TLB - Target label
TTD - Tracked target data
$**OSD,53.21,A,57.89,R,12.52,R,45.67,6.78,N*hh<CR><LF>
1 2 3 4 5 6 7 8 9
1. Heading, degrees true (0.00 - 359.99, null)
2. Heading status (A=data valid, V=data invalid)
3. Vessel course, degrees true (0.00 - 359.99, null)
4. Course reference (B/M/W/R/P, null)
B=Bottom tracking log
M=Manually entered
W=Water referenced
R=Radar tracking (of fixed target)
P=Positioning system ground reference
5. Vessel speed (0.00 - 999.99, null)
6. Speed reference, B/M/W/R/P
7. Vessel set, degrees true, manually entered (0.00 - 359.99)
8. Vessel drift (speed), manually entered (0.00 - 99.99, null)
9. Speed units (N=Knots)
$RARSD,
x.x,x.x,x.x,x.x,x.x,x.x,x.x,x.x,x.x,x.x,x.x,N,H
*hh <CR><LF>
1 2 3 4 5 6 7 8 9 10 11
12 13
1. Origin 1 range, from own ship (0.000 - 999) (see note 2)
2. Origin 1 bearing, degrees from 0 (0.0 - 359.9) (see note 2)
3. Variable range marker 1(VRM1), range (0.000 - 999)
4. Bearing line 1(EBL1), degrees from 0 (0.0 - 359.9)
5. Origin 2 range (0.000 - 999.9) (see note 2)
6. Origin 2 bearing (0.0 - 359.9)(see note 2)
7. VRM2,.9 range (0.000 - 999)
8. EBL2, degrees (0.0 - 360.0)
9. Cursor range, from own ship (0.000 - 999)
10. Cursor bearing, degrees clockwise from 0 (0.0 - 359.9)
11. Range scale in use (0.0625 - 120)
12. Range units (K/N/S)
13. Display rotation (see note 1)
NOTES
1 Display rotation:
C=Course-up, course-over-ground up, degrees true
H=Head-up, ship's heading(center-line) 0 up
N=North-up, true north is 0 up
2 Origin 1 and origin 2 are located at the stated range and bearing
from own ship and provide for two independent sets of variable range
markers (VRM) and electronic bearing lines (EBL) originating away from
own ship position.
$**TLB,x.x,c--c,x.x,c--c,…,x.x,c--c*hh<CR><LF>
1 2 3 3
1. Target number “n” reported by the device (1 - 1023)
2. Label assigned to target “n” (TT=00 - 99, AIS=000000000 - 999999999)
3. Additional label pairs