
Garmin G1000 Cockpit Reference Guide for the DA42
190-00406-05 Rev. B
2-4
SECTION 2
FLIGHT INSTRUMENTS
2.3 ALTIMETER
Altitude Reference
Box
Altitude Trend
Vector
Current Altitude
Barometric Setting
Box
Figure 2-7 Altimeter
Altitude Reference Bug
Altitude Reference Bug
The Altitude Reference Bug can be set to any desired
altitude. The bug acts as a visual reference to indicate the
desired altitude is approaching.
Set the Altitude Reference Bug
Turn the
ALT
Knobs to set the altitude reference
bug. The small
ALT
Knob sets the hundreds and
the large
ALT
Knob sets the thousands. This
altitude also appears in the Altitude Reference
Box above the altimeter.
Altitude Trend Vector
The end of the trend vector displays approximately
what the altitude will be in 6 seconds if the current rate of
vertical speed is maintained.
Barometric Setting Box
To set barometric pressure, turn the BARO Knob to
select the desired setting.
Altitude Alerting
Figure 2-8 Altitude Alerting Visual Annunciations
Within 1000 ft
Within 200 ft
Deviation of ±200 ft
Visual annunciations appear in the Altitude Reference
Box. Whenever the Altitude Reference is changed,
the Altitude Alerter is reset. The Altitude Alerter is
independent of the Automatic Flight Control System.
Barometric Minimum Descent Altitude
The desired barometric minimum descent altitude
(MDA, or Decision Height, DH) can be set in the Timer/
References Window.
Visual annunciations alert the pilot when approaching
the MDA:
• When the aircraft altitude descends to within 2500
feet of the MDA setting, the Barometric Minimum
Box appears with the altitude in light blue text.
The bug appears on the tape in light blue once in
range.
• When the aircraft passes through 100 feet of the
MDA, the bug and text turn white.
• Once the aircraft descends past the MDA, the bug
and text turn yellow and the aural alert, “Minimums
Minimums”, is generated.
Alerting is inhibited while the aircraft is on the ground.
If the aircraft climbs after having reached the MDA, once it
reaches 50 feet above the
MDA, alerting is disabled.
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