
PS Engineering
PAC24 Series Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-240-0008 Page ii Rev. 8, June 2003
3.1 SCOPE ............................................................................................................................. 3-1
3.2 PAC24 CONTROLS........................................................................................................... 3-1
3.3 POWER SWITCH (3) (EMG-FAIL SAFE OPERATION) .................................................... 3-1
3.3.1 SINGLE PANEL FAIL SAFE OPERATION .......................................................................... 3-1
3.3.2 DUAL PANEL FAIL SAFE OPERATION............................................................................. 3-2
3.4 MICROPHONE SELECTOR (2) .......................................................................................... 3-2
3.4.1 TELEPHONE OPERATION ................................................................................................ 3-2
3.4.2 STUCK MICROPHONE PROTECTION................................................................................ 3-2
3.4.3 SWAP MODE (REMOTE TRANSFER OF COM TRANSCEIVERS).......................................... 3-2
3.4.4 OBSERVER TRANSMIT SELECTION (PART NUMBER –0400 SERIES)................................. 3-2
3.5 RECEIVE AUDIO SELECTOR (1)....................................................................................... 3-3
3.5.1 SPEAKER AMPLIFIER (4)................................................................................................. 3-3
3.5.2 KEY “CLICK”.................................................................................................................. 3-3
3.6 SPLIT MODE ..................................................................................................................... 3-3
3.6.1 SPLIT MODE, SINGLE PANEL .......................................................................................... 3-3
3.6.2 SPLIT MODE, DUAL PANEL ............................................................................................ 3-4
3.6.3 SPLIT MODE, OBSERVER PANEL (-04XX) ..................................................................... 3-4
3.7 INTERCOM OPERATION................................................................................................... 3-4
3.7.1 INTELLIVOX® VOX-SQUELCH ....................................................................................... 3-4
3.7.2 VOLUME CONTROL (3)................................................................................................... 3-5
3.7.3 INTERCOM MODES (5).................................................................................................... 3-5
3.7.4 ENTERTAINMENT INPUT................................................................................................. 3-5
3.8 TELEPHONE MODE .......................................................................................................... 3-6
3.9 INTERNAL RECORDER SYSTEM (OPTION 1 UNITS ONLY) ............................................ 3-6
3.9.1 OPERATION .................................................................................................................... 3-6
3.9.2 CONCURRENT MESSAGES .............................................................................................. 3-6
SECTION IV- WARRANTY AND SERVICE.................................................................. 4-1
4.1 WARRANTY ...................................................................................................................... 4-1
4.2 FACTORY SERVICE .......................................................................................................... 4-1
APPENDIX A – INSTALLATION DRAWING ...........................................................A
APPENDIX B SINGLE INTERCONNECT WIRING........................................................ B
APPENDIX B DUAL INTERCONNECT WIRING............................................................ B
7.1 DUAL PAC24 WIRING WITH OBSERVER CONFIGURATION UNITS .....................................
7.2 DUAL PAC24 WIRING WITH OBSERVER CONFIGURATION AND EXPANSION UNITS ..........
APPENDIX C- INSTRUCTIONS FOR FAA FORM 337 AND CONTINUING
AIRWORTHINESS ....................................................................................................................C
8.1 INSTRUCTIONS FOR FAA FORM 337, AUDIO PANELS .........................................................
8.2 INSTRUCTIONS FOR CONTINUING AIRWORTHINESS, AUDIO PANELS ................................
APPENDIX D – RTCA DO160D (EUROCAE ED-14) ENVIRONMENTAL
QUALIFICATION FORM.........................................................................................................D
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