PS Engineering
PAC24 Series Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-240-0008 Page 2-1 Rev. 8, June 2003
Section II - Installation
2.1 GENERAL INFORMATION
2.1.1 SCOPE
This section provides detailed installation and interconnect instructions for the PS Engineering PAC24-
Series Audio Control Panel/Intercom System.
Please read this manual carefully before beginning any installation to prevent damage and post-installation
problems. Installation of this equipment requires special tools and knowledge.
NOTE: The PAC24 requires specialized knowledge and tools for an effective installation. An appropri-
ately rated Certified Aircraft Repair Station must install this equipment in accordance with applicable
regulations. PS Engineering, Incorporated warranty is not valid unless the equipment is installed by an au-
thorized PS Engineering, Incorporated dealer. Failure to follow any of the installation instructions, or in-
stallation by a non-certified individual or agency will void the warranty, and may result in an unairworthy
installation.
2.2 Unpacking and Preliminary Inspection
Use care when unpacking the equipment. Inspect the units and parts supplied for visible signs of shipping
damage. Examine the unit for loose or broken buttons, bent knobs, etc. Verify the correct quantity of com-
ponents supplied with the list in Section 1.6 (B). If any claim is to be made, save the shipping material and
contact the freight carrier. Do NOT return units damaged in shipping to PS Engineering. If the unit or ac-
cessories shows any sign of external shipping damage, contact PS Engineering to arrange for a replace-
ment. Under no circumstances attempt to install a damaged unit in an aircraft. Equipment returned to PS
Engineering for any other reason should be shipped in the original PS Engineering packaging, or other
UPS approved packaging.
2.3 Equipment Installation Procedures
2.3.1 Cooling Requirements
Forced air cooling of the PAC24 is not required. However the unit should be kept away from heat produc-
ing sources (i.e. defrost or heater ducts, dropping resistors, heat producing avionics) without adequate cool-
ing air provided. Outside, ram air cooling of the unit is not permitted, and may result in damage.
2.3.2 Internal DIP Switch Configuration
The tables below describe the various internal switch selections.
The PAC24 can be easily configured for many different applications. This includes dual audio panel
installations. In a single installation, no action is required. In dual installations, place the DIP witches into
the proper position to configure the PAC24 as the pilot, or copilot panel. By designating a pilot or copilot
panel, the aircraft commander, or pilot, will have priority for transmissions and intercom mode selection.
Note:
Bold=Default settings (as shipped from factory)
Units are shipped as single unit configuration, 28V lighting.
(41 pages)
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