Garmin G3X Touch Pilot's Manual page 76

Flight Instruments
F
ailure oF the
If the external GPS navigation source fails, the system reverts to the internal GPS
navigation source and 'REV' is shown in yellow in the lower left quadrant of the HSI.
CDi S
Cale
NOTE: When an external GPS navigator is in use, the pilot cannot change
the CDI scale.
Three factors determine the default distance from the center of the CDI to full left
or right limits:
• CDI scale = 1.25 nm - within 30 nm of any airport in the active route.
• CDI scale = 0.25 nm - on an approach leg or within 2 nm of the FAF or MAP.
• CDI scale = 5.0 nm - if the previous two conditions do not exist.
a -S
uto lewing
The G3X Touch will automatically slew the LOC course pointer to the correct final
approach course when an ILS, LOC, BC, LDA, or SDF approach is active in the external
navigator and the appropriate CDI and navigation source are selected on the G3X
Touch.
Setting up Auto-Slew:
1) With the desired approach activated in the external navigator, verify the
appropriate CDI Source is selected (i.e., GPS1 or GPS2).
2) Once inside the FAF (Final Approach Fix), the course pointer will change
from magenta to green and the course pointer will move, or slew, to the
final approach course as received from the external GPS navigator.
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Garmin G3X Touch Pilot's Guide
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190-01754-00 Rev. E