Display Backlighting; Device Registration - Garmin GI 275 Pilot's Manual

System Overview
Adjusting navigation angle units:
1) From the 'Units' Menu, select the Nav Angle Data Field.
2) Select the desired units of measure (Magnetic or True).
Adjusting temperature units:
NOTE: Temperature unit adjustments do not affect temperature gauges. Contact a
Garmin Dealer or installer for unit adjustment.
1) From the 'Units' Menu, select the Temperature Data Field.
2) Select the desired units of measure (Celsius or Fahrenheit).
Airport Runways
Setting airport criteria affects which airports are displayed on the Direct To 'Nearest' Menu.
See the Navigation Section for details.

1.6 DISPLAY BACKLIGHTING

The MFI has a built-in photocell to detect ambient lighting conditions and adjusts its
display brightness accordingly. In certain installations, the MFI is integrated with the aircraft
lighting dimming bus and will respond to dimming bus changes. If automatic or dimming bus
brightness changes are inadequate, display brightness can be adjusted from the MFI directly.
Adjusting display brightness:
1) From any page, open the menu and select Backlight.
2) Use the arrow buttons or turn the Inner Knob to adjust display brightness offset.
3) Select the Back Button to save settings.

1.7 DEVICE REGISTRATION

Unregistered MFIs cannot install critical databases or updates. To register the MFI, create
a Garmin account at flygarmin.com and add the MFI as a device on the account. Before
registering the MFI, obtain the System ID of the MFI.
Obtaining MFI System ID:
1) From any page, open the menu and select System > Info.
2) Note the System ID number as shown in the following example. The System ID is required
when registering the device.
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Garmin GI 275 Pilot's Guide 190-02246-01 Rev. A