Main Discrete Inputs Page; Figure 5-14. Main Discrete Inputs Page - Garmin GPS 400W Installation Manual

5.3.9

MAIN DISCRETE INPUTS Page

The discrete inputs displayed on the page are dependent on the unit configuration and
settings. See Section 5.3.3.
Select the MAIN DISCRETE INPUTS Page. Figure 5-14 shows the discrete inputs with the airframe
configured for Fixed Wing. Figure 5-14a shows the discrete inputs with the airframe configure for
helicopter and includes the HTAWS inputs.
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
RMT OBS
RMT CDI
RMT RCL
EXTERNAL SWITCH STATE (Helicopter with HTAWS Enabled)
This allows you to verify the operation of any external switches that are present in an HTAWS
installation. See Figure 5-14a.
Selection
RMT OBS
RMT RCL
TER INHB
AUD INHB
AUR SUPR
RP MODE
AIR/GRND
Page 5-14
Rev. G
Verify That:
The box is filled in while a remote OBS switch is pressed.
The box is filled in while a remote CDI source select switch is pressed.
The box is filled in while the COM remote recall switch is pressed.
Verify That:
The box is filled in while a remote OBS switch is pressed.
The box is filled in while the COM remote recall switch is pressed.
The box is filled in while the Terrain Inhibit switch is pressed.
The box is filled in while the HTAWS Audio Inhibit input is pulled low.
The box is filled in while the Aural Suppression switch is pressed.
The box is filled in while the RP Mode switch is pressed.
The box is filled in when the Air/Ground switch is in use.
NOTE

Figure 5-14. MAIN DISCRETE INPUTS Page

Figure 5-14a. MAIN DISCRETE INPUTS Page
(Helicopter with HTAWS)
GNS 400W Series Installation Manual
190-00356-08