PS Engineering
PAC24 Series Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-240-0008 Appendix A Rev. 8, June 2003
Appendix B Dual Interconnect wiring
Pilot PTT
10
L
12
S
5
J
19
Z
Pilot Phones Lo
Pilot Phones
D
Speaker Lo
Cockpit Speaker Hi
14
N
13
P
16
E
H
T
3
C
4
1
B
Pilot Mic Lo
Pilot Mic PTT
Pilot Mic Audio Hi
15
F
9
R
6
K
X
20
b
NAV
1
Com #1
Com #2 Com #3 Com #4 Com #5
(Note 13)
NAV
2
MKR ADF DME
UNSW
1
UNSW
2
ADF Audio Lo
ADF Audio Hi
Mkr Audio In Lo
Mkr Audio In Hi
Com 3 Mic Key
Com 3 Lo
Com 3 Mic Audio Hi
Com 3 Audio Hi
Com 2 Mic Audio Hi
Com 2 Lo
Com 2 Mic Key
Com 2 Audio Hi
Com 1 Mic Audio Hi
Unswitched Audio Lo
Unswitched Input #2 Hi
Unswitched Audio Lo
Unswitched Input #1 Hi
DME Audio Lo
DME Audio Hi
Nav 2 Audio Lo
Nav 2 Audio Hi
NAV 1 Audio Lo
Nav 1 Audio Hi
Com 1 Lo
Com 1 Mic Key
Com 1 Audio Hi
Com 4 Mic Key
Com 4 Lo
Com 4 Mic Audio Hi
Com 4 Audio Hi
Com 5 Mic Key
Com 5 Lo
Com 5 Mic Audio Hi
Com 5 Audio Hi
ADF Audio Lo
ADF Audio Hi
Mkr Audio In Lo
Mkr Audio In Hi
Com 3 Mic Key
Com 3 Lo
Com 3 Mic Audio Hi
Com 3 Audio Hi
Com 2 Mic Audio Hi
Com 2 Lo
Com 2 Mic Key
Com 2 Audio Hi
Com 1 Mic Audio Hi
Unswitched Audio Lo
Unswitched Input #2 Hi
Unswitched Audio Lo
Unswitched Input #1 Hi
DME Audio Lo
DME Audio Hi
Nav 2 Audio Lo
Nav 2 Audio Hi
NAV 1 Audio Lo
Nav 1 Audio Hi
Com 1 Lo
Com 1 Mic Key
Com 1 Audio Hi
Com 4 Mic Key
Com 4 Lo
Com 4 Mic Audio Hi
Com 4 Audio Hi
Com 5 Mic Key
Com 5 Lo
Com 5 Mic Audio Hi
Com 5 Audio Hi
10
L
12
S
5
J
14
N
13
P
16
E
H
T
3
C
15
F
9
R
6
K
20
X
Z
19
Pass Phones Lo
Pass Phones
11-33 VDC
24
c
Audio Low
External Speaker Hi
Speaker Lo
Airframe Ground
A
2A
V
V
SCL
Music Low
Music In
7
11
Swap
Switch
2
Pass 1 Mic Lo
Pass 1 Mic Hi
Pass 2 Mic Lo
Pass 2 Mic Hi
Pass 3 Mic Lo
Pass 3 Mic Hi
22
23
a
b
Pass Phones Lo
Pass Phones
11-33 VDC
21
c
Audio Low
Airframe Ground
A
2A
Music Low
Music In
7
14V Dimmer/Swap
18
Pass 1 Mic Lo
Pass 1 Mic Hi
Pass 2 Mic Lo
Pass 2 Mic Hi
Pass 3 Mic Lo
Pass 3 Mic Hi
22
23
a
25
25
Copilot Phones Lo
Copilot Phones
D
Speaker Lo
Cockpit Speaker Hi
Y Y
SDA
18
14 V dimmer/Swap (Note 12)
U
28 V dimmer/Swap (Note 12)
8
PA Mute (Note 8)
Pilot ICS key (Note 7)
Expansion Input
Expansion Output
Expansion Power Out
Note 5
Playback/ CVR (Note 12)
4
1
Expansion Input
Expansion Output
Expansion Power Out
Note 5
24
Pass ICS in
Pass ICS out
21
1. All wiring must conform to MIL 22750 or 27500.
2. All shields should be grounded at audio panel only,
other end remains floating.
3. All phone and mic jacks must be floating from ground.
4. Speaker low must be connected as shown,
and not to other audio low.
5. To have 3 passengers in addition to copilot, connect to jacks.
OR : For expansion unit, use part number 11606 or 11606R only.
6. Pins V, Y, 21 and 24 are used to connect in dual systems.
7. Pins M, W, and 11 are use in cases where a
Push-to-talk intercom is desired. (Section 2.4.12.1)
8. PA Mute is TTL Level logic low when transmit PTT is active.
9. For music distribution information, see Section 2.4.13
10 All wiring must be #24 AWG or larger, unless otherwise noted.
11. Power and Ground to be #18 AWG or larger.
For best results, power and ground wires should be twisted
together for greater noise immunity.
12. See Section 2.3.2 for details on dual mode pins selected through DIP.
13. In TEL mode, COM 5 Mic audio should ONLY be connected to pilot's audio panel
Copilot audio will be routed through pilots panel to phone.
In duplex mode, radio PTT connection is not necessary if not supported by
the telephone.
Playback
2
Playback (Note 12)
U
28 V dimmer/Swap (Note 12)
8
PA Mute (Note 8)
11
Copilot ICS key (Note 7 )
W
ICS key enable (Note 7)
W
M
M
ICS key enable (Note 7)
Note 9
Note 9
Swap
Copilot PTT
Copilot Mic Lo
Copilot Mic PTT
Copilot Mic Audio Hi
(41 pagine)
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