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9. B. (4) Line Select Keys -
There are four
line select keys on each side of
the CRT display.
For reference, the keys are defined one through
four from top to bottom on either side of the CRT. A left and right
is also assigned to define the side of the
CRT on which the key is
located. For example, line select key
‘IL’ is the top left line
select key.
In the case of an index display, the line select keys can be used to
select submodes within the major modes.
In displays other than
index, the
line select keys 4L and 4R are primarily used for direct
access to other
modes in the FMS. Data can be copied to the
scratchpad
through the use of a line select key, and once data has
been entered into the scratchpad, either via line selection or
manual keyboard entry, it may be selected to any of the allowable
line select fields on
a given page.
This can be accomplished simply
by depressing the key adjacent to the line in which
you wish the
scratchpad data to be inserted.
(5) Function Keys
- There are four function keys, and the function of
each is described in the following paragraphs:
(a)
Previous (PREV) and NEXT Page Keys - The number of pages in a
particular
mode or menu display are shown in the upper right-
hand corner of the display. The format is ‘AA/BB.’ ‘AA’
signifies the number of the current page that is displayed.
‘BB’ signifies the total number of pages that are available for
pilot viewing/modification. Page changes shall
be done by
selecting the PREV and NEXT keys. When in the PLAN
mode, these
keys will increment or decrement the map center waypoint.
(b)
Clear (CLR) Key -
The CLR key performs the following functions:
. When a message is present in the scratchpad, pressing the
CLR key shall delete that message.
. When an alphanumeric entry resides in the scratchpad, one
character shall be cleared from the scratchpad (from right
to left) for each time the button is depressed.
c When an alphanumeric entry resides in the scratchpad and the
CLR key is held down, the first character is cleared within
100 ms. After 400 ms have elapsed, characters will be
cleared at 100-ms intervals for as long as the key is held
down.
(c) Delete (DEL) Key -
When there is no message in the scratchpad
and the DEL key is depressed, a
“*DELETE*” will appear in the
scratchpad.
This may now be line selected to delete waypoints
and other items displayed on the CDU. When there is a message
displayed, the delete operation will be inhibited.
22-14-00
Page 198=132
Aug 15/91
Use or disclosure of information cm thts page is subject to the restrictions on the title page of this document,
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