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MK VI MK VIII EGPWS Installation Design Guide
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SHEET 245
Table 5.3.8-1: Radio Altitude Input Select Type 1 (ALT 55)
SIGNAL CONNECTION REFERENCE SUMMARY DATA
Radio Altimeter #1 (+) = J1-64
(-) = J1-45
6.1.2
4.2.3.1
Format: Alt 55 with Validity Flag
Input Type: Basic
Fault Designation: RADIO ALTIMETER FAULT
Validity: Radio Altitude Valid Discrete #1 (+28V)
PIN FUNCTION CONNECTION PIN TYPE CHANNEL DESIGNATION
REFERENCE
Polarity/Configuration References
Radio Altitude Validity
Discrete #1 (+28V)
J1-29 Input 28V_DISC_07 >+17V = Valid
<+4.4V = Invalid
6.6.1
4.2.7
DH Discrete (Gnd)
J1-33
Input GND_DISC_11 Gnd = Below DH
<not> Gnd = Above DH
6.6.14
4.2.7
Table 5.3.8-2: Radio Altitude Input Select Type 2 (ARINC 429)
CHANNEL
429RX_5
CONNECT TO: Left LRRA
Format: ARINC 429 (Low Speed)
Fault Designation: RADIO ALTIMETER BUS
Bus Type: Basic
A = J2-21
B = J2-4
Data
Radio Altitude
Reference
6.2.29
Label
164
Sig. Bits
16
Range
±8192 FT
Signal Type
Basic
Resolution
0.125
Rate (ms)
25-50
PIN FUNCTION CONNECTION PIN TYPE CHANNEL DESIGNATION
REFERENCE
Polarity/Configuration References
DH Discrete (Gnd)
J1-33
Input GND_DISC_11 Gnd = Below DH
<not> Gnd = Above DH
6.6.14
4.2.7
Table 5.3.8-3: Radio Altitude Input Select Type 3 (RT-200/300)
SIGNAL CONNECTION REFERENCE SUMMARY DATA
Radio Altimeter #1 (+) = J1-64
(-) = J1-45
6.1.11
4.2.3.1
Format: DC with Validity Flag (RT-200/300 Precision Output)
Input Type: Basic
Fault Designation: RADIO ALTIMETER FAULT
Validity: Radio Altitude Valid Discrete #1 (+28V)
PIN FUNCTION CONNECTION PIN TYPE CHANNEL DESIGNATION
REFERENCE
Polarity/Configuration References
Radio Altitude Validity
Discrete #1 (+28V)
J1-29 Input 28V_DISC_07 >+17V = Valid
<+4.4V = Invalid
6.6.1
4.2.7
DH Discrete (Gnd)
J1-33
Input GND_DISC_11 Gnd = Below DH
<not> Gnd = Above DH
6.6.14
4.2.7
Table 5.3.8-4: Radio Altitude Input Select Type 4 (KRA 405)
SIGNAL CONNECTION REFERENCE SUMMARY DATA
Radio Altimeter #1 (+) = J1-64
(-) = J1-45
6.1.2
4.2.3.1
Format: Alt 55 with Validity Flag (KRA-405 Auxiliary Output #1)
Input Type: Basic
Fault Designation: RADIO ALTIMETER FAULT
Validity: Radio Altitude Valid Discrete #1 (+28V)
PIN FUNCTION CONNECTION PIN TYPE CHANNEL DESIGNATION
REFERENCE
Polarity/Configuration References
Radio Altitude Validity
Discrete #1 (+28V)
J1-29 Input 28V_DISC_07 >+17V = Valid
<+4.4V = Invalid
6.6.1
4.2.7
DH Discrete (Gnd) J1-33 Input GND_DISC_11 Gnd = Below DH
<not> Gnd = Above DH
6.6.14
4.2.7