Garmin G3X Touch Pilot's Manual page 369

COMPARISON ALERTS
Critical values generated by redundant sensors are monitored by comparators. If
differences in the sensors exceed a specified amount, the Comparator Window
appears in the lower right corner of the PFD and the discrepancy is annunciated in the
Comparator Window as a 'MISCOMP' (miscompare).
If a Garmin G5 standby flight display is configured, the following comparison alerts
may appear:
G5 Annunciation/
Message
! Attitude miscompare
! Heading miscompare
! Airspeed miscompare
! Altitude miscompare
! Attitude no compare
Heading no compare
!
Airspeed no compare
!
!
Altitude no compare
Each of the given MISCOMP/NO COMP messages relate to a parameter communicated
to the G3X Touch PFD and G5 from the GSU 25 ADAHRS unit. The G3X Touch PFD
and G5 both conduct checks to validate the ADAHRS data. If there is a disagreement
between the GSU 25 ADAHRS unit and the PFD or G5, the yellow MISCOMP message
for the specific parameter (e.g., heading) is displayed. If the PFD or G5 determines it
is unable to perform miscompare monitoring for any of the given attitude, heading,
airspeed, and altitude parameters communicated by the ADAHRS, the unit will display
a white NO COMP message for that parameter.
190-02472-00 Rev. D
G3X Touch PFD
Annunciation
ATT MISCOMP
HDG MISCOMP
IAS MISCOMP
ALT MISCOMP
ATT NO COMP
HDG NO COMP
IAS NO COMP
ALT NO COMP
Comparison Alerts
Garmin G3X Touch ™ Pilot's Guide for Certified Aircraft
Annunciations & Alerts
Description
The attitude, heading, airspeed, or
altitude information between the
GSU 25 ADAHRS unit and the G5
is conflicting.
The attitude, heading, airspeed, or
altitude information between the
GSU 25 ADAHRS unit and the G5
cannot be compared.
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