Beechcraft C-12C, Руководство оператора и техническое справочное пособие

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TM 1-1510-218-10
present position in two ways. The bottom of the page
will display the aircraft's latitude and longitude. Above
the latitude/longitude position is the present position
expressed as the distance and radial from a nearby
VOR. The VOR displayed on the NAV 2 page is the
nearest low or high altitude class VOR. Terminal class
VOR's are not used because many charts do not
depict a compass rose around them and verifying the
displayed radial would be difficult. Verify that the
present position shown on the NAV 2 page is correct.
1. Left Information/Data Page
2. Right Information/Data Page
3. Right Page Identifier
4. Center Segment
5. Left Page Identifier
Figure 3-5. Present Position Page
NOTE
The aircraft must be located such that the
GPS antenna has an unobstructed view of
the sky so that required satellite signals
are not being blocked. If necessary,
position the aircraft away from hangars or
other obstructions.
f. Display Format. The KLN 90B uses a
Cathode Ray Tube (CRT) display. The display screen
is divided into segments. These segments are formed
by horizontal and vertical lines on the screen. Most of
the time there are five segments. Aeronautical
information/data is presented on the screen in the form
of pages. A page is a presentation of specific data in
an organized format. Various page types are used to
display related kinds of data. One page type is NAV
for navigational data and another is APT for airport
information.
When the screen is divided in five segments, the
KLN 90B displays two pages at one time. These
pages are presented in the upper left and upper right
segments of the screen. The lower left segment
indicates what specific page is being displayed on the
left side. The lower right segment indicates what
specific page is being displayed on the right side. The
page identification includes a number appended to the
page type when there is more than one page for a
page type. There is no number displayed in the page
identifier if there is only one page for a particular page
type. Whenever a + sign is part of a page identifier,
there will be two or more pages, all having the same
page number, used to present all of the information.
That is, all of the information associated with a
particular page number doesn't fit on the page being
viewed.
The lower center segment of the display is used
to present four different kinds of information. The first
seven spaces of the segment indicate the mode in
which the KLN 90B is operating. The last three
spaces are usually blank but may contain the
characters MSG or ENT. The characters MSG
indicate that there is a message to be viewed on the
Message page. The characters ENT will flash in these
spaces when it is necessary to press the
ENT button.
This segment is also used for displaying short
operational messages called status line messages. A
complete listing of status line messages is contained in
Paragraph 3-7aaj.
g. Basic Operation of Controls. The KLN
90B has five knobs and seven buttons which are used
to perform all operations. In general, the two
concentric knobs and the
CRSR button located on the
left side of the unit are used to select pages and enter
data on the left side of the screen. Likewise, the two
concentric knobs and the
CRSR button on the right
side of the unit are used to select pages and enter
data on the right side of the screen.
The cursor is an area of inverse video on the
screen. On many pages, data can be added, deleted,
or changed by first pressing the appropriate
CRSR
button to turn the cursor function on and bring the
cursor on the screen. The appropriate knobs are then
used to enter the data. When a cursor is on the
screen, the page name normally shown in the left and
right lower segments is replaced with a CRSR
annunciation in inverse video.
(1) Page Selection . The left outer knob is
rotated to select one of eight page types for the left
side of the screen. Refer to Table 3-1.
NOTE
The cursor function must be off.
Rotating the left outer knob one detent clockwise
or counterclockwise selects the page type marked on
the knob in that direction. Once the page type has
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