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PS Engineering

PAC24 Series Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-240-0008 Page 2-4 Rev. 8, June 2003

Switch S2

OFF

CVR Output

IRS Playback Input

2.3.2.6 Backlighting / Swap – J3, pin 18 configuration

The installer has the option of implementing PS Engineering’s patented “Swap” function, which allows the

pilot to switch between Com 1 and Com 2 with an external switch. The Swap command is controlled

through the unused backlight input, and selected by the internal DIP switch.

Switch S4

1 ON

OFF

2 OFF

14 V lighting

control

Swap switch

2.3.2.7 Backlighting / Swap – J3, pin U configuration

Switch S4

OFF

28 V lighting

control

Swap switch

2.3.2.8 Backlight 14/28V

Switc

14 V 28V

1 On

Off

2 Off

3 Off

4 On

Off

14 V Aircraft 28 V aircraft

Pin 18= 14 V input Pin 18=Swap

Pin U=Swap Pin U =28 V input

2.3.2.9 Expansion Mode / Telephone S5 configuration

Switch S5

1 On Expansion Unit Present (11906 installed)

4 On

Duplex Telephone mode for Com 5

NOTE: Set both audio panel the same in a dual installation

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 34 35

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