190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page 30-243
30.7.4 GTX Transponder
Refer to the applicable transponder installation manual for configuration mode instructions. The
configuration settings are detailed in Section 24.2
and Appendix G.2 of this document.
NOTE
Make configuration changes only as described in Section 24.2 and Appendix G.2,
changing other configuration settings is not recommended and may significantly alter the
unit’s operation. Garmin recommends recording all configuration settings (before making
any changes) for reference.
30.7.5 GTN 625/635/650/725/750 Unit
Configuration Mode Operations
Before configuring the GTN, make sure that no Configuration Module service messages are displayed in
the message queue. This would indicate the config module is improperly wired or damaged. Configuration
mode is used to configure the GTN settings for each specific installation. While in configuration mode,
pages can be selected by pressing the desired key on the display. Some pages may require page scrolling to
view all of the information and keys on the page. Scrolling is done by pressing the screen and dragging the
page in the desired direction, or by pressing the Up or Down keys.
Entering Configuration Mode:
1. With the GTN turned off (circuit breaker pulled), press and hold the HOME key and reapply power
to the GTN (push in the circuit breaker).
2. Release the HOME key when the display activates and the name ‘Garmin’ appears fully
illuminated on the screen.
3. The first page displayed is the Configuration Mode Home Page (the following figures are for
reference only and may vary from actual screen/settings, refer to instructions on the drawings in
Section 24.2
and Appendix G.2).
4. Press the GTN Setup key.
GTN 7XX Configuration Mode Home Page
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