Garmin GNC 420AW, Installation Manual

Page: 97 / 236

400W Series Installation Manual Page 5-13
190-00356-02 Rev. G
5.3.9 MAIN DISCRETE INPUTS Page
Select the MAIN DISCRETE INPUTS Page (see Figure
5-12) if the encoding altimeter input is used. Verify that
the
DECODED ALTITUDE field indicates the correct
altitude.
GRAY CODE
If the encoding altimeter input is used, verify that the
DECODED ALTITUDE field indicates the correct
altitude.
EXTERNAL SWITCH STATE
This allows you to verify the operation of any external switches that are present in the installation.
Selection Verify That:
RMT OBS
The box is filled in while a remote OBS switch is pressed.
RMT CDI
The box is filled in while a remote CDI source select switch is pressed.
RMT RCL [1] The box is filled in while the COM remote recall switch is pressed.
[1] Main software version 3.00 or later
5.3.10 MAIN DISCRETE OUTPUTS Page
Select the MAIN DISCRETE OUTPUTS Page (see
Figure 5-13). This page allows you to verify the
operation of any external annunciators and switches that
are present in the installation.
DISCRETE TOGGLE
Selection Verify That:
APR The APR annunciator is active and inactive as selected on this page.
GPS
The GPS source select annunciator is active and inactive as selected
on this page.
INTEG
The INTEG annunciator is active and inactive as selected on this
page.
MSG The MSG annunciator is active and inactive as selected on this page.
OBS The OBS annunciator is active and inactive as selected on this page.
TERM
The TERM annunciator is active and inactive as selected on this page.
VLOC The VLOC source select annunciator is active and inactive as selected
on this page.
WPT The WPT annunciator is active and inactive as selected on this page.
ILS/GPS APR The ILS/GPS APPROACH output is active and inactive as selected on
this page (NOTE: This output is connected to the autopilot ILS
ENGAGE input, not to an annunciation, and therefore this is for bench
testing purposes only).
GPS SELECT The GPS SELECT output is active and inactive as selected on this
page (NOTE: This output is connected to the autopilot GPS SELECT
input, not to an annunciation, and therefore this is for bench testing
purposes only).
Figure 5-12. MAIN DISCRETE INPUTS Page
Figure 5-13. MAIN DISCRETE OUTPUTS Page