Icom MR-1220 Series Instruction Manual page 35

ARPA operation
D Description of the ARPA display
If the radar has received ARPA information of other
vessels or other targets, the icons are displayed as
shown below.
L see "ARPA settings" later in this section for customizing
the ARPA setting options.
1
2
Posn: 34°38.448 N/135°22.664 E
T CRs: 172.7°T
CPA: 0.594 NM
BRG: 035.1°R
1 Auto Acquiring zone
Displayed when the Auto Acquire Function is turned
ON in the Menu screen.
The zone is fixed to the ±45° and 2 ~ 2.5 NM
against your vessel's heading.
2 ARPA Target
Displayed when any ARPA target is began to
acquire or acquired.
3 Selected ARPA target
You can select an ARPA target by moving the
cursor and pushing [ENTER]/[
corners of a square are displayed when a target is
selected.
The selected ARPA target detail is displayed in the
ARPA information box (5).
4 ARPA icon
Displayed when simplified ARPA function started to
acquire or acquired a target.
L If the Maximum number of ARPA Targets are
acquired, "FULL" is displayed below the icon.
3
4
Posn: 34°34.707 N
5
TsPD: 15.9kn
135°20.550 E
TCPA: 07m 19s BRG: 036.4°R
Dist: 2.397 NM Dist: 2.480 NM
] on it. Four
ThE sIMPLIFIED ARPA OPERATION
5 ARPA information box
Displays the selected APRA target details in the
information box.
Vector mode
Position
Posn: 34°38.448 N/135°22.664 E
Reference and Course
T CRs: 172.7°T
Closest Point of
CPA: 0.594 NM
Approach
BRG: 035.1°R
Bearing against your vessel
ARPA target number
Reference and
speed
T sPD: 15.9kn
Time to Closest
TCPA: 07m 19s
Dist: 2.397 NM Point of Approach
Distance from your vessel
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