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2-2
ACQ (on control panel): Manually ac-
quires a target.
AUDIO OFF (on control panel): Silences
aural alarm.
OFF ON
VRM
ACQ
AUDIO
OFF
Control panel
ORIGIN
MARK
VECTOR
TRUE/
REL
VECTOR
TIME
RADAR
MENU
ORIGIN
MARK
VECTOR
TRUE/
REL
VECTOR
TIME
E,AUTO
PLOT
MENU
TARGET
DATA
TARGET
BASED
DATA
AUTO
PLOT
TRIAL
LOST
TARGET
HISTORY
MARK
CHART
ALIGN
VIDEO
PLOT
NAV
MENU
1 2 3
654
7 8 9
ENTER
CANCEL
–
9
Plotting keypad
A target measuring 800 m or more in the radial
or circumferential direction is regarded as a
landmass and not acquired or tracked.
Echoes smaller than 800 m are regarded as
targets to be tracked.
CRITERIA OF TRACKING
2.3 ARPA Menu Operation
Various parameters for the Auto Plotter are
set on the ARPA 1 and ARPA 2 menus. To
do this, follow the steps shown below:
1. Press the AUTO PLOT key if the Auto
Plotter is not yet activated. Note that
the label ARPA appears in the upper-
right box on the screen.
2. Press the E, AUTO PLOT MENU key
to show the ARPA 1 menu.
3. Press the [0] key once if you wish to go
to the ARPA 2 menu.
4. Select a desired menu item by press-
ing the corresponding numeric key.
5. Select a menu option by pressing the
same numeric key as pressed in step 3
above. If there is more than one option
on the current menu item, you may
need to press the numeric key several
times. Press it until the desired option
is highlighted. (Note that certain menu
items will prompt you to enter numeric
data or to define points on the radar
screen with the trackball.)
6. Press the ENTER key to register set-
tings.
7. Press the E, AUTO PLOT MENU key
to close the menu.
0/1/2/3/4
24/32NM
0/1/2/3
OFF/REL/TRUE
[ARPA 1]
1 AUTO ACQ
2 AUTO ACQ AREA
3 GUARD RING
4 GUARD RING SET
5
6 CPA, TCPA SET
7 HISTORY POINTS
8 HISTORY INTERVAL
9
0 [ARPA 2]
Hit [0].
OFF/ON
3, 6 NM/SET
OFF/ON
CPA x.xNM
TCPA xx.xMIN
* 5/10 only on G-type
Hit [E, AUTO PLOT MENU].
Hit [AUTO PLOT].
[ARPA 2]
1 [ARPA 1]
2 TRIAL MANEUVER
3 MARK SIZE
4 CPA, TCPA DISPLAY
5 SET DRIFT
6 GUARD RING, ACQ
LINE STABILIZE
7 SPEED REF
8 INPUT SIG CHECK
9 ARP TRACK TEST
0 INITIAL SETTING
STATIC/DYNAMIC
STANDARD/LARGE
OFF/ON
OFF/MAN
SET xxx.x°
DRIFT xx.xKT
NORTH/CRT
WT/BT
[ ARPA ]
[INITIAL SETTING]
1 [ARPA 2]
2 TARGET SELECT
3 TRACK RANGE
4 QV SELECT
5 TGT OUTPUT DATA
6
7
8
9 [ARPA PRESET]
Hit [0].
5/10/20*
30S/1/2/3/6MIN