BendixKing SG 465 System EFS 50 - Manual (Page 81)

EHSI Displays
4.1.15 Issued 4/95 SW 06/07/08/11
netic bearing pointers when
the compass card is True ref-
erenced and the display of
True bearing pointers when
the compass card is magnetic
referenced.
REFERENCE WAYPOINT
When the joystick is interfaced to
an EFS 50 system, it can be
used to generate and move a
single Reference Waypoint on
the display unit. This reference
waypoint can then be entered
into the KNS 660 or any other
LNAV using an appropriate
GAMA 429 interface.
With an LNAV or RNAV selected
for the primary nav sensor and
during display of a NAV MAP on
the EHSI, initial movement of the
joystick will create a reference
waypoint ahead of the aircraft on
the half range ring at the current
heading. This will be true for
both HSI and ARC map display
formats. The reference waypoint
will be a standard white waypoint
symbol. Movement of the way-
point will be in any of the eight
directions commanded by the
joystick. The rate of movement
will start off slow and increase in
speed in two steps. Return of
the joystick to its center, off posi-
tion at any time will reset the rate
of movement to the slowest
speed. The reference waypoint
location on the display screen
and its rate of movement relative
to the display screen will be inde-
pendent of the display range
selected. The reference way-
point is not allowed to exit the
compass. When an LNAV is
selected as the primary naviga-
tion source, Lat/Lon coordinates
of the reference waypoint will be
displayed in the lower center of
the display. The reference way-
point position information can be
transferred to the LNAV that is
selected as the primary naviga-
tion sensor, by pressing the
ENTER button while the refer-
ence waypoint and its coordi-
nates are displayed. The coordi-
nates of the reference waypoint
will remain displayed for at least
10 seconds and disappear from
the display within 15 seconds
after activating the ENTER but-
ton. If the reference waypoint is
not moved for 20 seconds, it will
disappear from view and will re-
appear in the same location rela-
tive to the display screen (inde-
pendent of range selection) the
next time the joystick is activated.
However, a change of primary
NAV sensor or display modes will
reset the invisible reference way-
point location to its initial starting
position.
Note: Systems with an MFD
can have a joystick on the CP
469 MFD control panel or a
stand alone joystick. Addition-
al joysticks for the pilot or co-
pilot normally will not be
installed. Systems without an
MFD may have up to two joy-
sticks that are completely inde-
pendent of each other; one for
the pilot and one for the co-
pilot. The pilot’s joystick will
not be allowed to create or