REVUE THOMMEN AG
CH-4437 Waldenburg
AD20 Standby Altimeter
Page 40 of 72
07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6
3.1.3.1 Electromagnetic Environment (EME)
The flight instrument is designed, analyzed, installed, and tested to perform and fulfill the aircraft
electromagnetic environment (EME) requirements without any malfunction or degradation in
performance.
3.1.3.2 Electromagnetic compatibility (EMC)
The flight instrument proves electromagnetic compatibility (EMC). Which means the flight instrument
performs its individually designed functions in a common EME without causing or suffering
unacceptable degradation due to electromagnetic interference (EMI) to or from
other equipment/systems in the same environment in accordance with the overall requirements.
3.1.3.3 Electromagnetic interference (EMI)
The generation of EMI by the REVUE THOMMEN AD20 Standby Altimeter and its susceptibility to
EMI is controlled to the limitation in accordance to RTCA/DO-160D and as modified REVUE
THOMMEN AD20 Standby Altimeter specification. The requirements are met in all operating modes.
3.1.3.4 Pointer position error
The pointer position error does not exceed 5 feet maximum.
3.1.3.5 Scale error
Scale errors do not exceed the tolerances specified in the Section II Part 3 Para A.8.
3.1.3.6 Hysteresis
Apparent Hysteresis is limited to the amount required by design to obtain stability of the display.
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