Onwa Marine Electronics KR-1338C v.1 - Manual (Page 15)

ARPA FUNCTION( ) Require Heading Data Input
1. Acquisition
Instant selection of auto or manual acquisition in 0.2 ~ 16nm, relative
speed 100KT.
2. Tracking
Automatic tracking of up to 10 acquired targets betwen 0.1 to 16 nm.
3. Prediction of target motion
True or relative vectors, time scaled.
4. Past position
10 past positions of tracked targets.
5. Alarm Lost target. CPA/TCPA
6. Automatic tracking range
0.1 ~ 16nm
7. Target information (one target selected)
Distance and bearing from own ship to target
Moving direction and speed
CPA (estimated Closest Time to CPA)
8. Vector length 30 sec.~30 min.
9. Plotting interval 15 sec.~6 min.
7