Power is provided for the unit through a
2-ampere circuit breaker, placarded GRPH-DSPL,
located on the overhead circuit breaker panel.
b. Controls and Functions.
(1) Mode Selector Knob. Allows the operator
to turn the unit on, and select desired mode.
(a) OFF. Power is removed from the
unit when mode selector knob is in the OFF position.
(b) EMER. Checklists of emergency
procedures for the aircraft are displayed in the
emergency (EMER) mode. The emergency index
contains the titles of the emergency checklists. The
selected checklist item is shown in yellow, while the
others are shown in magenta.
(c) 4 LST. Selects the preprogrammed
checklist for display.
(d) SBY. Selects the standby mode.
Nothing is displayed on the screen when in the SBY
(e) NAV 1. Selects NAV 1 information to
be displayed. Data referenced to NAV 1 will be
displayed in cyan, in the lower left portion of the radar
display. If NAV data is invalid, the data will be
replaced with dashes.
(f) NAV 2. Selects NAV 2 information to
be displayed. Data referenced to NAV 2 will be
displayed in yellow, in the lower right portion of the
radar display. If NAV data is invalid, the data will be
replaced with dashes.
(g) BOTH. Selects both NAV 1 and NAV
2 information to be displayed.
(2) Left / Right (Ü Or Þ) Button. When Ü or
Þ is pressed, a track line will appear and move in the
direction indicated by the button pressed. The track
line will disappear 10 seconds after the button has
(3) Joystick. The joystick is used to move a
waypoint to any position on the radar screen.
(4) CANCEL Button. When pressed, the
CANCEL button will remove displays from the radar
(5) PAGE Button. The PAGE button is used
to view consecutive pages within a checklist. It is also
used, along with the ß or Ý buttons, to bypass items
without checking them off, or return to items previously
(6) Up and Down (ß And Ý) Button. The
buttons are used along with the PAGE button to
bypass items in the checklist without checking them off
or return to items previously bypassed.
(7) Input Jack. Provides a means of
connecting the pocket terminal to the unit.
(8) 3 Button. Pressing the 3 check button
causes the selected checklist to be displayed. With
the checklist displayed, the 3 check button is used to
check off items. When the last item in a list is checked
off, the display automatically returns to any items
previously bypassed. When all items have been
checked off, the display returns to the index with the
next checklist selected. An END OF LIST statement
follows the last title in an index and the last item in a
checklist. The pilot may return to the index prior to
checking off all items by pressing the IDX button.
(9) Index (IDX ) Button. Allows the pilot to
return to index.
statement is displayed in all modes except standby
(SBY) when the unit is first turned on. The statement
will automatically disappear after 20 seconds or can be
made to disappear sooner by pressing the CANCEL
THE NAVIGATION DATA PRESENTED ON
THIS SCREEN IS NOT TO BE USED FOR
PRIMARY NAVIGATION. CONTENTS OF
1. Mode selector switch As required.
3A-31. POCKET TERMINAL.
a. Description. The KA-68 pocket terminal is
used to program normal and emergency checklist
information into the radar graphics control panel. The
pocket terminal plugs into a jack on the front of the
radar graphics unit. Refer to Figure 3A-25.