BendixKing SG 465 System EFS 40/50 - Manual (Page 118)

EHSI Displays
The displays covered in this sec-
tion are custom displays, created
at the request of specific cus-
tomers to satisfy unique require-
ments. Every attempt was made
to ensure these displays followed
standard EFS 40/50 colors, sym-
bology and methodology. In
some cases this was not possi-
ble, it is therefore, most important
to read the following information
and ensure you have a very good
understanding of the display and
its intended use. If there are any
questions concerning the follow-
ing displays, contact the installing
agency or a Honeywell factory
representative for additional infor-
m a t i o n .
DOPPLER
Refer to Figure 4.1.10 while
reviewing the DOPPLER DIS-
P L A Y .
o
Incorporated in software 04,
the Doppler mode, annunciated
as DOPP, provides navigation
information from a Doppler NAV
sensor. Primary use of this
mode is helicopter related, with
the intended purpose of search
and rescue hover. The DOPP
mode is displayed on the EHSI
as dual concentric velocity and
target range circles inside the
compass card. Cross bars repre-
sent components of the aircraft
’ s
left/right and fore/aft velocity.
Note: The following will address
only those areas of the EFS
40/50 Doppler mode which are
different from the standard
EHSI presentations.
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COMPASS CARD
The map compass card is used
in the DOPP mode, the symbolic
aircraft however, is the larger one
used in the normal EHSI mode.
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DOPPLER VELOCITY BARS
Green bars, the length of the
compass card
’ s diameter, repre-
sent the aircraft ’ s velocity
left/right (Vx) and fore/aft (Vy) as
referenced to the symbolic air-
craft. The intersection of the two
bars provide the sum of the two
velocity components.
If the Doppler velocity information
becomes invalid or failed the
velocity bars will be removed and
a RED X will be displayed in the
center of the compass.
w
VELOCITY AND
TARGET SCALE
Two white concentric circles
inside the compass card provide
reference for the Doppler velocity
bars and LNAV target waypoint.
When used as a reference for the
Doppler velocity these circles
represent 10 and 20 KTS with
the compass card representing
30 KTS of velocity. When used
as a reference for the target way-
point they represent .2 NM and .4
NM with the compass card repre-
senting .6 NM.
4.1.23 Issued 8/10 SW 04/05/06/07/08/09/10/11/12/13/14/15/16
CUSTOM (NON STANDARD EHSI) DISPLAY S
Section 4.1mp 9/9/10 1:45 AM Page 4.1.23