Figure 6-9 Software Update Page; Figure 6-10 Cdi Indicator Page; Table 6-6 Cdi Indicator Selections - Garmin GTR 225 Installation Manual

6.4.1.8 Display Update Page
The DISPLAY UPDATE page loads the display software to the GTR/GNC. See section 6.8 for
instructions on how to load software to the GTR/GNC.
6.4.2 NAV Configuration Group (GNC Only)
6.4.2.1 CDI Indicator Page
The CDI INDICATOR page configures the type of Course Deviation Indicator (CDI) that is connected to
the GNC. The setting is based upon the connected CDI. See table 6-6 for settings.
Selection
NONE (DEFAULT)
RESOLVER
CONVERTER
SERIAL
190-01182-02
Rev. F

Figure 6-9 Software Update Page

Figure 6-10 CDI Indicator Page

Table 6-6 CDI Indicator Selections

No external resolver is supported. OBS mode allows the user to edit the
OBS with concentric knobs. Serial OBS update messages are supported in
this mode, but the unit will not flag if updates are discontinued or are not
periodic.
Auto-decodes resolver setting via six-wire resolver interface. Uses internal
DSP to compute course information. See section 6.5.1 for calibration.
Disables all internal OBS functions. Allows use of conventional external
converter via the composite output pin.
For use with serial Electronic Flight Instrument System (EFIS) conforming
to the Garmin serial data specification. See appendix B.
Description
GTR 225/GNC 255 TSO Installation Manual
Page 6-7