REVUE THOMMEN AG
CH-4437 Waldenburg
AD20 Standby Altimeter
Page 45 of 72
07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6
Pin
#
Signal Name Function Signal
Type
EMC cat. Remarks
B Discrete Input 3 A/C Type - A Discr. In
(3)
susc.
D Discrete Input 4 A/C Type - B Discr. In
(4)
susc.
V Discrete Output 0 Warning Flag Valid Out
Discrete
Discr.Out
(0)
susc.
A Discrete Output 1 Battery Status Discr.Out
(1)
susc.
Open drain
max. 1 A
H NC spare -- -- ground
G Chassis GND GND -- --
Table 4-2 Pin Assignments
Remarks:
1) Short-circuit RS232 TxD and RxD on aircraft installation
2) Shielded twisted pair
3) Transmit and Receive Signals are seen from the instrument’s view
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