Thommen AD20 - Configuration Identification; RS232 Serial Interface; Operating Range, Limiting Values and Tolerances

REVUE THOMMEN AG
CH-4437 Waldenburg
AD20 Standby Altimeter
Page 26 of 72
07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6
2.3.1.6 Configuration Identification
The configuration identification defines a specific instrument configuration parameterized by the
individual parameter lists for each REVUE THOMMEN AD20 Standby Altimeter instrument, which in
turn explains the different parameter requested by the installer. So for every new AD20 Standby
Altimeter a different Configuration ID number is designated.
Configuration ID 8501 (example)
2.3.1.7 RS232 Serial Interface
The AD20 Standby Altimeter has a RS232 serial interface for maintenance and calibration purpose
only. This interface is not accessible for normal operation in the aircraft.
The RS232 Interface has the following transmission parameters:
9600 Baud No Parity 1 Stop Bit
2.3.1.8 Operating Range, Limiting Values and Tolerances
Air data Operating range
1)
BIT Limit
MIN/MAX
2)
ETSO/TSO-
Tolerance
@ 25 / 71 °C
(-4 / +160 °F)
Remarks
ALTP
Pressure Altitude
-1,000 ft
+ 55,000 ft
-305 m
+ 16,764 m
-1,060 ft
+ 55,610 ft
-323 m
+ 16,950 m
- 20 / - 60 ft
+ 305 / 610 ft
- 6 / -18 m
+ 93 / 186 m
ALTC
Baro corrected
Altitude
-1,000 ft
+ 55,000 ft
-305 m
+16,764 m
-1,060 ft
+ 55,610 ft
-323 m
+ 16,950 m
- 20 / - 60 ft
+ 305 / 610 ft
- 6 / -18 m
+ 93 / 186 m
ALT Rate
Altitude rate
- 20,000 ft/min.
+ 20,000 ft/min.
- 30,000 ft/min.
+ 30,000 ft/min.
(± 10 % rdg.)
(refer to
SAE/AS8016)
Static Pressure 30 … 1100 hPa 30 … 1100 hPa -- absolute pressure
Table 2-4 Operating Range, Limiting Values and Tolerances