89000046-014 KSN 780/8XX/900 AeroNav AML STC Installation Manual for Helicopters
Rev 0 Page 6-6
© Honeywell International Inc. Do not copy without express permission of Honeywell.
43 GPS ARINC-429 Out 2B Output
VOR/ILS ARINC 429 OUT 3A**
VOR/ILS ARINC 429 OUT 3B**
60 RS232 Out 5 Output
63 RS232 IN 6 Input
77 RS170 Video IN Input
Table 40 P1050 Pin Description
** GLAS Enablement Only
6.1.5 Altitude Gray Code
Altitude Gray code input is connected on the following pins:
Altitude D4 P1001 70 Input
Altitude A1 P1001 69 Input
Altitude A2 P1001 68 Input
Altitude A4 P1001 67 Input
Altitude B1 P1001 66 Input
Altitude B2 P1001 65 Input
Altitude B4 P1001 64 Input
Altitude C1 P1001 63 Input
Altitude C2 P1001 62 Input
Altitude C4 P1001 61 Input
Altitude Common P1001 60 Input
Table 41 Altitude Gray Code Description
NOTE: Some transponders and altitude encoders do not have internal isolation
diodes to prevent the unit from pulling the encoder lines to ground when the
unit is off. These units will require the installation of a diode into harness for
each encoder line.