Comparator Annunciations (3 Display Only) - Garmin G900X Pilot's Manual

COMPARATOR ANNUNCIATIONS (3 DISPLAY ONLY)

The Comparator monitors critical values generated by redundant sensors. If differences in the sensors exceed
a specified amount, this discrepancy is annunciated in the Comparator Window as a 'MISCOMP' (miscompare)
as seen in Figure A-1. If one or both of the sensed values are unavailable, it is annunciated as a 'NO COMP' (no
compare). The following is a list of the possible annunciations:
Comparator Window Text
ALT MISCOMP
IAS MISCOMP
HDG MISCOMP
PIT MISCOMP
ROL MISCOMP
ALT NO COMP
IAS NO COMP
HDG NO COMP
PIT NO COMP
ROL NO COMP
190-00726-00 Rev. J
Figure A-1 Sensor Comparator Window
Difference in altitude sensors is > 200 ft.
If both airspeed sensors detect < 35 knots, this is inhibited.
If either airspeed sensor detects > 35 knots, and the difference in sensors is > 10 knots.
If either airspeed sensor detects > 80 knots, and the difference in sensors is > 7 knots.
Difference in heading sensors is > 6 degrees.
Difference in pitch sensors is > 5 degrees.
Difference in roll sensors is > 6 degrees.
No data from one or both altitude sensors.
No data from one or both airspeed sensors.
No data from one or both heading sensors.
No data from one or both pitch sensors.
No data from one or both roll sensors..
Garmin G900X Pilot's Guide
Comparator
Window
Condition
APPENDIX A
635