5-2
5.2
Controls for ARPA
The ARPA uses the keys on the plotting keyboard on the right side of the control head.
PLOT MENU: Shows/hides ARPA menus.
Plot Symbol keys: Select specific plot symbols for manually acquired targets.
TARGET CANCEL: Terminates tracking of a single target specified by the trackball if the
key is pressed with a hit-and-release action. If the key is held depressed for about 3
seconds, tracking of all targets is terminated.
ENTER: Registers menu options selected.
VECTOR: Selects true or relative presentation of target vectors.
TARGET DATA: Displays data on one of tracked targets selected by the trackball.
LOST TARGET: Silences the lost target aural alarm and erases the lost target symbol.
ACQ: Manually acquires a target.
AUDIO OFF: Silences aural alarm.
HL
OFF
1
OFF
CENTER
4
EBL
7
TARGET
TRAILS
CANCEL
PANEL
BRILL
2
VECTOR
5
CHART
ALIGN
8
CU, TM
RESET
0
MODE
3
LOST
TARGET
6
MARK
9
A/C
AUTO
ENTER
TARGET
CANCEL
TARGET
DATA
ACQ
AUDIO
OFF
RADAR
MENU
PLOT
MENU
NAV
MENU
Figure 5-1 Plotting keypad
5.3
ARPA Menu Operation
5.3.1
Activating the ARPA function
1. Press the [RADAR MENU] key.
2. Press the [8] key to select ARPA, instead of EPA. (The label ARPA appears at the
screen center.)
