Garmin Cirrus Perspective SR20 Pilot's Manual page 85

Changing navigation sources:
1) Press the CDI Softkey to change from GPS to VOR1 or LOC1. The NAV1 standby frequency in the upper left
corner of the MFD is light blue.
2) Press the CDI Softkey again to change from VOR1 or LOC1 to VOR2 or LOC2. The NAV2 standby frequency in
the upper left corner of the MFD is light blue.
3) Press the CDI Softkey a third time to return to GPS.
GPS
Selected
Pressing the CDI
Softkey Cycles through
Navigation Sources
The system automatically switches from GPS to LOC navigation source and changes the CDI scaling
accordingly when all of the following occur:
• A localizer or ILS approach has been loaded into the active flight plan
• The Final Approach Fix (FAF) is the active leg, the FAF is less than 15 nm away, and the aircraft is moving
toward the FAF
• A valid localizer frequency has been tuned
• The GPS CDI deviation is less than 1.2 times full-scale deflection
GPS steering guidance is still provided after the CDI automatically switches to LOC until LOC capture, up
to the Final Approach Fix (FAF) for an ILS approach, or until GPS information becomes invalid. Activating a
Vector-to-Final (see the Flight Management Section) also causes the CDI to switch to LOC navigation source;
GPS steering guidance is not provided after this switch.
190-00820-08 Rev. A
Selected
Figure 2-22 Selecting a Navigation Source
Cirrus Perspective by Garmin – Pilot's Guide for the SR20/SR22/SR22T
™
NAV1 Selected for Tuning
LOC1
FLIGHT INSTRUMENTS
NAV2 Selected for Tuning
VOR2
Selected
71