Garmin G1000 Pilot’s Guide for the Socata TBM 850/900
190-00709-05 Rev. D
652
APPENDIX A
COMPARATOR ANNUNCIATIONS
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:
Figure A-1 Sensor Comparator Window
Comparator
Window
Comparator Window Text
Condition
ALT MISCOMP
Difference in altitude sensors is > 200 ft.
IAS MISCOMP
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.
HDG MISCOMP
Difference in heading sensors is > 6 degrees.
PIT MISCOMP
Difference in pitch sensors is > 5 degrees.
ROL MISCOMP
Difference in roll sensors is > 6 degrees.
ALT NO COMP
No data from one or both altitude sensors.
IAS NO COMP
No data from one or both airspeed sensors.
HDG NO COMP
No data from one or both heading sensors.
PIT NO COMP
No data from one or both pitch sensors.
ROL NO COMP
No data from one or both roll sensors..
