User's Manual

SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-200 SDU and SCM
23-15-30 2-3
DATE TBD
Figure 2-1 MCDU Screen
NOTE: The SAT PHONE 1/2 menu shown in Figure 2-1 is an example where classic (SAT-1)
and SBB (SAT-2) cockpit calls are supported. Depending on the secure ORT
pa
rameter settings, the prompts "SAT-1" and "SAT-2" can be replaced to display any
message limited to five characters.
The top of the screen displays the title of the menu on the screen. The bottom of the
scre
en (Line 14) is the scratchpad that displays information that you enter on the
keyboard.
The MCDU has six buttons on each side of the screen that ac
tivate MCDU functions.
Figure 2-1 displays these buttons on the left and right sides of the screen. When the
functions corresponding to a button are available, th
e function is displayed beside
the button.
Other lines on the MCDU screen display information relevant to the function or status
of the A78
1-200 system.
(2) Keyboard
The MCDU’s keyboard includes a set of numeri
c keys and a set of alphabetic keys,
both of which you can use to enter data into the MCDU.
The keyboard may include preset keys, such as the following:
•The IDX or MAIN M
ENU key: this key returns you to the MCDU’s main menu.
•The CLR
key: this key clears any text you type into the scratchpad.
•The NEXT PAGE key: this
key brings up the next page of a menu if one is
available.
•The PREV PA
GE key: this key brings up the previous page of a menu if one is
available.