BendixKing SG 465 System EFS 40/50 - Manual (Page 69)

EHSI Operation
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
FM S, GP S, OMG or LOR.
Beginning with software 08,
the 1-2 button no longer
selects between unlike LNAV
sources.
Software release 0402 added
“FUNCTION NOT IM PLE -
MENTED” annunciation when
either the 1-2, RMI or NAV
sensor select button is pressed
and it is not active in the sys -
tem. A y ellow FUNCTION
NOT IMPLEMENTED will be
displayed in the center of the
screen.
NAV NAVIGATION
SENSOR SELECT
During installation, the EFS
40/50 symbol generator was pro-
grammed with the type and
quantity of each piece of interfac-
ing equipment. Not all the
equipment interfaced to the EFS
40/50 is usable for primary navi-
gation. The EFS 40/50 creates
and maintains in permanent
memory a list of the interfacing
navigation sensors.
The NAV push button is used to
select which NAV sensor pro-
vides primary navigation data. A
press of the NAV sensor select
button sequentially selects the
next available sensor from the list
of those installed. Primary Navi-
gation Data is defined as the dis-
tance in the upper right corner,
selected course, course pointer
and deviation.
2.1.3 Issued 8/10 SW 04/05/06/07/08/09/10/11/12/13/14/15/16
EHSI CONTROLS (ED 461 & CP 467/468)
1-2
1
2
NAV
N
A
V
Section 2.1mp 9/8/10 7:46 PM Page 2.1.3