Soft Keying; Selectable Gps Data Source - Honeywell KMD-150 Pilot's Manual

General Information

SOFT KEYING

You will notice that a label is drawn alongside each valid key. Whenever
a new function is selected, by pressing a valid key, a new screen is dis-
played along with its new key labels. This capability of drawing key
labels that are only applicable to a particular screen is referred to as 'soft
keying', and allows one key to perform multiple functions without the
complications of multiple key presses on a conventional keypad.
For the purpose of describing the function of a particular key in this
manual, assume that all the keys on the pictured screen drawings are
numbered 1 - 5 from top to bottom. The ensuing text will use this num-
bering sequence to refer to each specific key. The number shown along-
side the pictured screen drawings refers to the number of the screen that
is called when that key is pressed. By using these numbers it is possible
to follow the paths through the operating system for all functions. If the
word RET is printed next to a key, this means that after the key function
is performed the same screen is RETurned. A good example of this is
ZOOM IN. If the word RTS is printed next to a key, this means that after
the key function is performed the previous screen is then displayed. All
screen drawings show the KMD 150 running from it's internal GPS
receiver. Variations affecting the KMD 150 when connected to an
external GPS are described in the accompanying text.

SELECTABLE GPS DATA SOURCE

The KMD 150 is available with or without an internal GPS receiver. The
internal GPS version of KMD 150 has a built in eight channel parallel
GPS receiver but like the non-GPS version, can also accept data from
an external source such as a Bendix/King KLN 89B if necessary. When
set to internal GPS source, all waypoint and flight plan programming is
carried out and executed on the KMD 150. When using the internal GPS
receiver, the KMD 150 can also drive your autopilot and panel mounted
indicators and annunciators.
If you have the non-GPS version of KMD 150 or if an external GPS
source is selected for use with the full GPS version, all internal naviga-
tion options are inhibited on the KMD 150 and instead, the active flight
plan and waypoints are imported directly from the host GPS. When
using external GPS data, the KMD 150's autopilot and annunciator out-
puts are disabled.
The navigation data source is always annunciated in Map Mode by a
small label located in the upper left of the screen. This label will show
INT NAV when using the internal GPS receiver and EXT NAV when
using an external GPS or LORAN receiver.
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Rev 1 Mar/2000
KMD 150 Pilot's Guide