9800 Martel Road Lenoir City, TN 37772 , 0503 Pilot’s Guide and Operation Manual FAA Approved TSO C50c JAA-Approved JTSO C50c Revision 4 202-240-0002 April 2009 Patent No 5,903,227 and 6,160,496 Audio Selector Panel with Intercom System Flying Never Sounded So Good!® PS Engineering, Inc. 2009 © Copyright Notice Copyrighted information in this manual is subject to change without notice.
This Pilot Guide provides detailed operating instructions for the PS Engineering PAC24-series, High Performance Audio Selector Panel/Intercom Systems. Please read it carefully before using the equipment so that you can take full advantage of its capabilities. This document is divided into three sections covering the basic operating areas of the PAC24 systems. They are transceiver selection, audio selector, and intercom.
Dual Panel Fail Safe Operation In a dual installation, the PAC24 designated as Pilot’s at installation, will default to Com 1. The audio panel designated as copilot will not operate in the off position. This prevents compromising the pilot’s audio capability in the event of a dual audio panel problem. Microphone Selector (2) There are 10 pushbuttons associated with the communications transceivers. The lower buttons control which transceiver is selected for transmit.
select switch determines who is on the phone: ISO - pilot, CREW - pilot and copilot, ALL - pilot, copilot, passengers In a standard dual installation, the pilot and copilot can select TEL mode independently by pressing their respective COM 5 button. The passengers are on the phone only when the pilot has selected TEL mode and his switch is in the ALL position. The copilot cannot put the passengers on the phone, and the passengers can only get on the phone when the pilot is on the phone.
not have transmit access. The crew has priority on all radios. The observer can listen to all radios if desired. Receive Audio Selector (1) Receiver audio is selected through 9 momentary push-button, backlit switches. Because the microphone push-button selector switch controls what transceiver is being heard, you will always hear the audio from the transceiver that is selected for transmit. The users can identify which receivers are selected by noting which of the green switch LEDs are illuminated.
Allow at least 20 seconds between turning the key click on and off. Split Mode The PAC24 has a flexible split mode, which allows one pilot to use one transceiver while the other can communicate on another. There are differences in the Split Mode in a single, or a dual audio panel installation.
Intercom Operation IntelliVox® VOX-Squelch No adjustment of the IntelliVox® squelch control is necessary. There is no field adjustment. Through individual signal processors, the ambient noise appearing in all six microphones is constantly being sampled. Non-voice signals are blocked. When someone speaks, only their microphone circuit opens, placing their voice on the intercom.
mode switch that allows the crew to tailor the intercom function to best meet the current cockpit situation. Single Installation Intercom Modes ISO: The pilot is isolated from the intercom and is connected only to the aircraft radio system. He will hear the selected aircraft radio reception (and sidetone during radio transmissions). The copilot will hear passengers’ intercom and entertainment, while passengers will hear copilot, intercom and entertainment.
Entertainment Input The audio selector panel has provisions for one entertainment input device in each audio panel. The volume control does not affect music level. Anytime a person speaks on the intercom, or there is radio traffic, the music will be muted. It will return gradually, through the use of SoftMute™ circuitry. The SoftMute™ can be defeated for a “Karaoke Mode” (music does not mute) by pressing the NAV1 and NAV2 buttons simultaneously for at least 3 seconds.
will also have access to the phone, and all four passengers will hear the conversation. In ISO intercom mode, when the PAC24 is in the Com 5 mode, the pilot position is in the "Phone Booth." Only the pilot will hear the telephone, and only he will be heard. He will also have access to Com 1 or 2, and will transmit on that radio using the PTT. All selected audio is provided.
Warranty and Service Warranty In order for the factory warranty to be valid, the installations in a certified aircraft must be accomplished by an FAA-certified avionics shop and authorized PS Engineering dealer. If the unit is being installed by a noncertified individual in an experimental aircraft, a factory-made harness must be used for the warranty to be valid. PS Engineering, Inc.
the rights to make modifications or improvements to the product without obligation to perform like modifications or improvements to previously manufactured products. Factory Service The unit is covered by a three-year limited warranty. See warranty information. Call PS Engineering, Inc. at (865) 988-9800 before you return the unit. This will allow the service technician to provide any other suggestions for identifying the problem and recommend possible solutions.