Garmin G900X Pilot's Manual page 71

The Arc HSI (Figure 2-15) is a 140˚ expanded section of the compass rose. The Arc HSI contains a Course
Pointer, To/From Indicator, a sliding deviation indicator (the To/From and deviation indicators are combined),
and a deviation scale. Upon station passage, the To/From Indicator flips and points to the tail of the aircraft,
just like a conventional To/From flag. Depending on the navigation source, the CDI on the Arc HSI can appear
in two different ways: an arrowhead (GPS, VOR, OBS) or a diamond (LOC).
Course Pointer
Navigation Source
Lateral Deviation Scale
The Selected Heading is shown to the upper left of the HSI for 3 seconds after being adjusted The light blue
bug on the compass rose corresponds to the Selected Heading. While the HSI is displayed as an arc, if the
Selected Heading Bug is adjusted off the shown portion of the compass rose, the digital reading displayed.
Adjusting the Selected Heading:
Turn the HDG Knob to set the Selected Heading.
Press the HDG Knob to synchronize the bug to the current heading.
The Selected Course is shown to the upper right of the HSI for 3 seconds after being adjusted. While the
HSI is displayed as an arc, the Selected Course is displayed whenever the Course Pointer is not within the 140˚
currently shown.
Adjusting the Selected Course:
Turn the CRS Knob to set the Selected Course.
Press the CRS Knob to re-center the CDI and return the course pointer to the bearing of the active waypoint or
navigation station (see OBS Mode for adjusting a GPS course).
Current Track Bug
Selected Heading
190-00726-00 Rev. A
Figure 2-15 Arc HSI
Figure 2-16 Heading and Course Indications
Garmin G900X Pilot's Guide
FLIGHT INSTRUMENTS
Flight Phase Annunciation
Course Deviation and
To/From Indicator
Current Heading
Selected Course
Selected Heading Bug
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