Garmin GTN 750 Pilot's Guide - Page 207

9.4 CDI (GTN 750 only) Foreword The GTN 750's CDI key is used to couple the GPS or VLOC receiver to the Getting external CDI (or HSI). When the external CDI (or HSI) is connected to the GPS Started receiver, "GPS" appears below the CDI key in the annunciation bar. When the Audio & external CDI (or HSI) is being driven by the VLOC receiver, "VLOC" appears Xpdr Ctrl instead. Com/Nav NOTE: The external CDI (or HSI) must be coupled to the VLOC receiver for approaches which are not approved for GPS. See the ILS example in the Procedures section for more information. FPL Direct-To NOTE: GPS phase of flight annunciations (LPV, ENR, etc.) are not applicable to the external CDI (or HSI) when VLOC is active. Proc NOTE: The internal on-screen CDI information is based on GPS data and Charts cannot be used for primary navigation. Wpt Info NOTE: If the unit is not configured for a CDI key, then the "activate GPS missed approach" will only resume automatic waypoint sequencing. The user must Map switch to GPS navigation, if desired, by using their external source selection method (this is typical an EFIS system). Traffic 1. The navigation source is annunciated under the CDI key. Terrain Touch CDI Key To Toggle Navigation Source Navigation Source Annunciation Figure 9-38 Navigation Source Selection 2. Touch the CDI key to toggle between sources. Weather Nearest Music Utilities System Messages Symbols Appendix 190-01007-03 Rev. B Garmin GTN 725/750 Pilot's Guide 9-33 Index