PS Engineering
PAC45T Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-045-5100
Page 2-9
Rev. 2, Jan. 2019
2.6 PAC45T Pin assignments
P451
J452
Pin
Description
Pin
Description
1
Ground
1
Lighting Common
2
Ground
2
No Connection
3
Ground
3
Ground
4
Ground
4
Ground
5
Ground
5
Ground
6
Ground
6
Ground
7
Ground
7
Ground
8
Ground
8
Ground
9
Ground
9
Ground
10
Ground
10
Ground
11
Ground
11
Ground
12
Ground
12
Ground
13
Ground
13
Ground
14
Ground
14
Ground
15
Ground
15
Ground
16
Ground
16
Ground
17
Ground
17
Ground
18
Ground
18
Ground
19
Ground
19
Ground
20
Aircraft Ground
20
Speaker Ground
21
Aircraft Ground
21
PA Ground
22
Pilot Hand Mic
22
Lighting In
23
Pilot Mic
23
No Connection
24
Copilot Mic
24
No Connection
25
Observer 1 Mic
25
No Connection
26
Observer 2 Mic
26
Passenger 5 Mic Audio
27
COM1 Mic
27
COM1 Audio Hi
28
COM2 Mic
28
COM2 Audio Hi
29
No Connection
29
No Connection
30
No Connection
30
No Connection
31
No Connection
31
No Connection
32
No Connection
32
No Connection
33
No Connection
33
COM1 Sidetone
34
No Connection
34
COM2 Sidetone
35
Pilot Headset
35
UNSW2
36
Copilot Headset
36
UNSW4
37
Observer 1 Headset
37
PA Sidetone
38
Observer 2 Headset
38
No Connection
39
Passenger 2,3 Headset
39
Speaker out OBSVR 1
40
Passenger 4,5 Headset
40
Speaker out COPILOT
41
Alert Power
41
Speaker Pilot
42
Aircraft Power
42
PA Out
43
Pilot Hand TX PTT
43
No Connection
44
Pilot TX PTT
44
Radio Mute
45
Copilot TX PTT
45
No Connection
46
Observer 1 TX PTT
46
Call
47
Observer 2 TX PTT
47
NAV1
48
COM1 Key
48
NAV2
49
COM2 Key
49
TACAN
50
No Connection
50
DME 1
51
No Connection
51
DME 2
52
No Connection
52
MKR 1
53
No Connection
53
MKR 2
54
No Connection
54
ADF
55
No Connection
55
UNSW1
56
Pilot Right Headset (connect to 451-35)
56
UNSW3
57
Copilot Right Headset (connect to 451-36)
57
Copilot Hand Mic
58
Observer 1 Right Headset (connect to 451-37)
58
Observer 1 Hand Mic
59
Observer 2 Right Headset (connect to 451-38)
59
No Connection
60
Passenger 2,3 Right Headset (connect to 451-39)
60
No Connection
61
Passenger 4,5 Right Headset (connect to 451-40)
61
No Connection
62
No Connection
62
PA Key