
PS Engineering
PMA450 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-450-0000
Page 2-11
Rev. 6, Dec. 2015
2.8 PMA450 Pin assignments
J1
Function
J2
Function
1 Marker Antenna
1 Pilot Phones Lo
2 Marker Ant Lo
2 Copilot Phones Lo
3 TEL Audio Hi
3 Copilot Phones (L)
4 TEL Audio Lo
4 Copilot Phones (R)
5 TEL Mic Audio
5 Lights lo
6 No Connect
6 14/28 V Lights
7 SW#1 (ADF Audio) In 7 14/28 V Lights
8 SW#1 (ADF Audio) Lo 8 Aircraft Power
9 Com 1 Audio
9 Aircraft Power
10Com 1 Audio Lo
10 Aircraft Ground
11Com 1 Mic
11 Aircraft Ground
12Com 1 Mic Key
12 PA Mute
13Com 2 Audio
13 Mute Inhibit
14Com 2 Audio Lo
14 Mute Inhibit Lo
15Com 2 Mic
15 Unswitched #4
16 No Connect
16 Pilot Phones (L)
17Nav 1 Audio
17 No Connect
18Nav 1 Audio Lo
18 RESERVED
19Nav 2 Audio
19 PA Enable Out
20Nav 2 Audio Lo
20 Swap
21SW#2 (DME) Audio
21 Swap Lo
22SW#2 (DME) Audio Lo 22 IRS Playback
23SW#3 (Aux) Audio
23 Music 1 (L)
24CNX80 Inhibit
24 Music 1 (R)
25No Connect
25 Music 1 Lo
26No Connect
26 Music 2 (L)
27No Connect
27 Music 2 (R)
28No Connect
28 Music 2 Lo
29Unswitched #3
29 No Connect
30Com 2 Mic Key
30 RESERVED
31Unswitched Audio 1
31 Pilot Phones (Rt)
32Unswitched Lo
32 Copilot Mic Audio
33Pilot Mic Audio
33 Copilot Mic PTT
34Pilot Mic PTT
34 Copilot Mic Lo
35Pilot Mic Lo
35 Pass 1 Mic Audio
36Ext IM MKR
36 Pass 1 Mic Audio Lo
37Ext OM MKR
37 Pass 2 Mic Audio
38Ext MM MKR
38 Pass 2 Mic Audio Lo
39MM Sense
39 Pass 3 Mic Audio
40Pass HP (L)
40 Pass 3 Mic Audio Lo
41Pass HP (R)
41 Pass 4 Mic Audio
42Pass HP Lo
42 Pass 4 Mic Audio Lo
43Unswitched 2 Lo
43 Speaker Lo
44Unswitched 2 Audio
44 Speaker Output
Table 2-4: PMA450 Pin Assignments