Section 925
GARMIN GNC 420W
925 - 6
Page Date: 31. March 2009
Pilot´s Operating Handbook
EXTRA 300L
925.6
WEIGHT & CENTER OF GRAVITY
Refer to the equipment list in Section 6 of this Handbook.
925.7
SYSTEM DESCRIPTION
925.7.1
KEY AND KNOB FUNCTIONS
LEFT-HAND KEYS AND KNOBS
The COM power/volume knob controls unit power and communications radio volume. Press
momentarily to disable automatic squelch control. In the GPS 420W, this control is used only for
power.
The large left knob (COM/VLOC) is used to tune the megahertz (MHz) value (to the left of the decimal
point) of the standby frequency for the communications transceiver (COM) or the VLOC receiver,
whichever is currently selected by the tuning cursor.
The small left knob (COM/VLOC) is used to tune the kilohertz (kHz) value (to the right of the decimal
point) of the standby frequency for the communications transceiver (COM) or the VLOC receiver,
whichever is currently selected by the tuning cursor. Press this knob momentarily to toggle the
tuning cursor between the COM and VLOC frequency fields.
The COM flip-flop key is used to swap the active and standby COM frequencies. Press and hold
to select emergency channel (121.500 MHz).
RIGHT-HAND KEYS AND KNOBS
The range key (RNG) allows you to select the desired map scale. Use the up arrow side of the key
to zoom out to a larger area, or the down arrow side to zoom in to a smaller area.
The direct-to key provides access to the direct-to function, which allows you to enter a destination
waypoint and establishes a direct course to the selected destination.
The MENU key displays a context-sensitive list of options. This options list allows you to access
additional features or make settings changes which relate to the currently displayed page.
The clear key (CLR) is used to erase information or cancel an entry. Press and hold this key to
immediately display the Default Navigation Page, regardless of which page is currently displayed.
The enter key (ENT) is used to approve an operation or complete data entry. It is also used to confirm
information, such as during power on.
The large right knob is used to select between the various page groups: NAV, WPT, AUX or NRST.
With the on-screen cursor enabled, the large right knob allows you to move the cursor about the
page.
Summary of Contents for 300L
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