BendixKing SG 465 System EFS 40/50 - Manual (Page 121)

EHSI Displays
4.1.26 Issued 8/10 SW 04/05/06/07/08/09/10/11/12/13/14/15/16
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OPTIMUM CABLE
POSITION CIRCLE
A green circle, 1/12 the diameter
of the compass card, is displayed
if an appropriate autopilot is
installed and is providing valid
command data. If the autopilot
indicates winchman control, the
circle will be dashed.
If the autopilot fails, “COUPLER”
in RED with a RED X through it
will be annunciated in the upper
left corner and the tendency cir-
cle will be decluttered.
o
An option (YES - NO COU-
PLER), selectable at the time of
installation and certification, pro-
vides an interface for systems
that do not have an autopilot
input. This configuration option
also may be selected if the RED
“COUPLER” warning flag is not
desired when interfaced with an
a u t o p i l o t .
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THRUST COMMAND
If the cable position sensor pro-
vides the thrust command, the
angle position bars and 12-
degree funnel circle change to
o r a n g e .
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HEADING BUG
Software version 05 added the
heading bug to the Cable display
and activated the heading datum
and analog deviation outputs for
autopilot coupling. Course datum
output is not active in this mode.
HOMING
Refer to Figure 4.1.12 while re-
viewing the HOMING DISPLAY.
Incorporated in software 05, the
Homing mode, annunciated as
HOM, provides navigation infor-
mation from a homing sensor.
Primary use of this mode is to
provide the pilot left-right naviga-
tion information to a beacon.
The HOM mode is displayed in
much the same way as the stan-
dard EHSI. Since the homing
sensor provides only left-right
guidance information, the
alphanumeric selected course
display is removed from the
upper left corner as is the course
pointer head and tail. The devia-
tion scale and bar are displayed
in a horizontal manner and do
not rotate with the compass card.
The display provided resembles
a standard EHSI with a heading
failure. However, the compass
card will function normally.
Two homing sensors may be
interfaced to the EFS 40/50 at a
t i m e .
Since the basic Homing display
closely resembles the standard
system, all normal display
options are provided in the Hom-
ing mode. All 360 EHSI and
ARC formats are operational as
is the addition of bearing point-
ers.
Section 4.1mp 9/9/10 1:45 AM Page 4.1.26