Selecting a NAV/COM Frequency using Rotary Knobs
1. Turn or momentarily press the small knob once to highlight the STBY
fi eld of COM or NAV. The knob function defaults to COM after 30
seconds of inactivity.
2. Turn the large knob to the desired MHz value.
3. Turn the small knob to the desired kHz value.
4. Press the small knob to confi rm entry.
Frequency Flip/Flop
To fl ip/fl op the active and standby NAV/COM frequencies, touch and hold the
small knob or touch the active NAV/COM frequency fi eld. An annunciation,
Hold for Flip-Flop, will be displayed near the knobs.
4
GTN 625/635/650 Cockpit Reference Guide (CRG)
190-01004-04 Rev. D