Garmin G1000 NXi Pilot's Manual page 71

The CDI can display two sources of navigation, GPS or VOR/LOC. The color indicates the current navigation
source, magenta for GPS and green for VOR and LOC. The full scale limits for the CDI are defined by an GPS-
derived distance when coupled to the GPS. If the CDI exceeds the maximum deviation on the scale (two dots)
while navigating with GPS, the crosstrack error (XTK) is displayed below the white aircraft symbol. When
navigating using a VOR or localizer (LOC), the CDI uses the same angular deviation as a mechanical CDI.
Changing navigation sources:
1) Press the CDI Softkey to change from GPS to VOR1 or LOC1. This places the cyan tuning box over the NAV1
standby frequency in the upper left corner of the PFD.
2) Press the CDI Softkey again to change from VOR1 or LOC1 to VOR2 or LOC2. This places the cyan tuning box
over the NAV2 standby frequency.
3) Press the CDI Softkey a third time to return to GPS.
GPS
Selected
Pressing the CDI Softkey
Cycles through
Navigation Sources
190-02177-00 Rev. A
Figure 2-20 Navigation Sources
NAV1 Selected for Tuning
LOC1
Selected
Figure 2-21 Selecting a Navigation Source
Garmin G1000 NXi Pilot's Guide for the Cessna Nav III
FLIGHT INSTRUMENTS
NAV2 Selected for Tuning
VOR2
Selected
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