Thommen AD20 - Table 6-2 Failure Codes

REVUE THOMMEN AG
CH-4437 Waldenburg
AD20 Standby Altimeter
Page 71 of 72
07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6
FC Description Failure
Class /
Criticality
Instrument
Reaction
for user
042 Static Pressure range exceeded
< 30 hPa OR > 1100 hPa for >2 s
or A/D-C Values of pressure sensor
are out of range
(label 270)
CRIT According to Failure Class Definition
044 Altitude (ALTC or ALTP) range
exceeded
< MINALT OR > MAXALT for >2 s
NONC According to Failure Class Definition
051 Altitude Rate range exceeded
> MINMAX ALTRATE for >2 s
(label 212)
NONC According to Failure Class Definition
055 A/D-C Error of Static Sensor
Temperature sensor detected
CRIT According to Failure Class Definition
060 Pointer Position not valid for three
times
black/white sectors of motor
movement detection disc shall be
checked
CRIT According to Failure Class Definition
061 LCD data feedback not correct CRIT According to Failure Class Definition
070 Control of WFVOutput switch not
correct
for >2 s
TOL According to Failure Class Definition
80 Instrument is not initialized CRIT According to Failure Class Definition
81 Battery fault detected TOL According to Failure Class Definition
255 An unknown error code was detected.
This failure is a provision for the error
handler to handle any error code in a
well defined state.
CRIT According to Failure Class Definition
Table 6-2 Failure Codes