Garmin G5 User's Manual
190-02072-00 Rev. B
92
Pilot's Guide
Installation Manual
Pilot's Guide
Index
2.4.3 G5 HEADING
NOTE:
Magnetic Heading is available only when the G5 is installed as part of
a G3X system and magnetometer data from another ADAHRS unit is available.
When installed as a backup instrument in a G3X/G3X Touch system, the G5 can
display magnetic heading information received from other AHRS (Attitude/Heading
Reference System) and magnetometer devices on the common CAN network. If
magnetic heading input data is not available, the G5 will display GPS-derived ground
track instead.
The G5 corrects for shifts and variations in the Earth’s magnetic field by applying the
Magnetic Field Variation Database. The Magnetic Field Variation Database is derived
from the International Geomagnetic Reference Field (IGRF). The IGRF is a mathematical
model that describes the Earth’s main magnetic field and its annual rate of change.
The database is updated approximately every 5 years via a software update. Failure to
update this database could lead to erroneous heading information being displayed to
the pilot.
If the G5 senses that the magnetic heading measurement is valid, but possibly
outside of the internal accuracy limits, the numeric heading is displayed in yellow.
2.4.4 BACKLIGHT INTENSITY
When set to Auto, the backlight is automatically adjusted according to ambient
light conditions. When set to Manual, the backlight level is set by the pilot.
Adjusting backlight intensity:
1)
While the unit is turned on, press the
Power
Button.
2)
Turn the Knob to adjust the backlight intensity.
3)
Press the Knob to close the backlight page.
Setting the backlight intensity to automatic:
1)
While the unit is turned on, press the Power Button.
2)
Press the
Power
Button again to select
Auto
.
3)
Press the Knob to close the backlight page.
