Main Cdi Indicator (Analog) Configuration Page - Garmin GTN 725 Installation Manual

5.4.5

Main CDI Indicator (Analog) Configuration Page

Touch the Main Indicator (Analog) button on the GTN
Setup page. See Figure 5-3. This page allows you to
calibrate the OBS resolver, enable the CDI key, selected
course for GPS and/or VLOC, and configure the V-Flag
state. The following fields can be configured, as shown in
Figure 5-7.
CALIBRATE OBS RESOLVER
To calibrate the OBS resolver, touch the 'Calibrate' button
on the Main CDI Configuration page. See Figure 5-7.
Next, select 150˚ on the OBS, then touch the OK button, as
prompted on the display. After the OBS resolver is
finished calibrating, the GTN will display 'OBS Resolver
Calibration Complete'. Touch 'OK' after the calibration is
complete. Verify OBS operation by checking that the
course displayed on the GTN is within 2° of the selected
course. Do this at 30° intervals around the OBS card.
CDI KEY
If it is desired to disable the CDI key, touch the button to
the right of 'CDI Key' to toggle between enabling and
disabling the CDI key. Disabling the CDI key causes the CDI source to always be displayed as GPS
regardless of CDI button presses. This may be necessary for certain EFIS systems where navigation
sensor selection must be accomplished on the EFIS or its control panel.
SELECTED COURSE FOR GPS
If it is desired to ignore a selected course input for GPS operation in OBS mode, touch the button to the
right of 'Selected Course for GPS' until 'Ignored' is displayed on the button.
SELECTED COURSE FOR VLOC
If it is desired to ignore a selected course input such that the VOR valid flag is dependent only on a valid
VOR signal, with lateral deviation calculated by another display device, touch the button to the right of
'Selected Course for VLOC' until 'Ignored' is displayed on the button.
V-FLAG STATE
Select either Normal or Declutter for the V-Flag State by touching the button until the desired selection is
displayed on the button.
Selection
Declutter
Normal
GTN 725/750 TSO Installation Manual
190-01007-02
Whenever vertical deviation is invalid, the vertical deviation bar is
parked in the maximum UP position and the vertical flag is removed
from view, except in the following cases: (i) the CDI is in VLOC mode
and an ILS frequency is tuned, or (ii) the CDI is in GPS mode and a
GPS approach with vertical guidance is active. In these cases,
whenever the vertical deviation is invalid, the vertical deviation bar
parks in the centered position and the vertical flag is shown.
Whenever vertical deviation is invalid the vertical deviation bar parks in
the centered position and the vertical flag is shown.
Figure 5-7. Main Indicator (Analog) Configuration
Description
Page
Page 5-9
Rev. A