Honeywell International Inc. 9PGTPL-100A Benutzerhandbuch

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Page 49
1 Mar 2006
34-45-54
MAINTENANCE MANUAL
TPL-100A Processor / Part No. 940-0530-001
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D. Directional Antenna
(1) General
The ANT-81A directional antenna calculates the bearing of intruder aircraft. The 
MILACAS-FR Processor transmits interrogations and receives replies on one of four 
antenna beams. When it selects a beam, the MILACAS-FR Processor electronically 
points the antenna in a surveillance direction during TCAS transmit and receive 
operations.
4
CARA (signal RTFAAA)
0 to 5400 ft
5.0 mV/ft, 0 ft = 0 V
1
0
0
5
0 to 2650 ft
-4 mV/ft, 0 ft = 0 V
1
0
1
6
-20 to 2867 ft
-20 to 500 ft: 20 mV/ft
500 to 2867 ft: 10.4 V + 3 mV/ft
0 ft = 0.4 V
1
1
0
7
ARINC 552A/429
0 to 480 ft: 0.02(h+20)
480 ft to 2857 ft: 
10*1n((e(h+20))/500)
Where h = height = 
500*(e**((V-10)/10) - 20, e = 2.7183
1
1
1
NOTES:
1. The KING KRA-405 outputs 3 and 6 above.
2. The Honeywell RT-300 outputs 5 and 7 above.
3. 1 = pin open, 0 = pin connected to common (RMP6K)
Table 16.   Radio Altimeter Straps (cont)
Radio 
Altimeter 
Type
Electrical Characteristics
Pin
12C
Pin
12B
Pin
12A