BendixKing SG 465 System EFS 50 - Manual (Page 41)

EHSI Operation
2.1.6 Issued 4/95 SW 06/07/08/11
1 EHSI NAV push button is
pressed, the next available
number 1 NAV sensor will be
selected.
ADF D-Bar presentation may
not be available if the ADF
does not provide a suitable
flag output.
Software 08 treats unlike LNAV
sources (i.e. FMS, LOR, OMG, or
GPS) as single sensors. When
two unlike LNAV sources are
configured, the EFS will display
both the on-side LNAV and the
off-side LNAV without a system
number and the NAV button is
used to select between them.
1-2 NAVIGATION SYSTEM
SELECT
The 1-2 button is used to cycle
between primary navigation sen-
sor system #1 and #2 for display.
The primary NAV system select-
ed is annunciated as sensor 1 or
sensor 2 on the EHSI. Example,
if VOR 1 is being displayed and
the 1-2 button is pressed, VOR 2
will become the displayed sen-
sor. If only one sensor is
installed, the display will not cycle
and the sensor annunciation will
not show a system number. For
example ADF would be displayed
(not ADF 1) in installations con-
taining a single ADF.
Note: The cross-side sensor for
VOR could be TCN, for LNAVs
it could be a combination of
FMS, OMG , LOR, or GPS.
After software 08, the 1-2 but-
ton no longer selects between
unlike LNAV sources.
When a RMI or NAV sensor
select button is pressed and it
is not active in the system, a
yellow “FUNCTION NOT
IMPLEMENTED” will be dis-
played in the center of the
screen.
BEARING POINTER
SELECT
The bearing pointer select but-
tons work in a similar manner as
the NAV sensor select button. A
press of the bearing pointer but-
ton sequentially selects the next
available sensor for display. The
bearing pointer sensor list con-
tains only those sensors which
have bearing information capabil-
ities. If the selected sensor has
distance information paired with
it, that distance will also be dis-
played below the sensor annun-
ciation. An optional push button
sequence allows independent
selection and display of the
respective DME distance without
the presence of the bearing
pointer.
1-2