Audio International PA-7500A Installation Manual - page 7
Audio International, Inc. PA-7500A Installation
Document # 540056A, Rev. A, 7/2000
Page 6 of 11
3.3
Cautions and Warnings
3.3.1 It is important to do a pin-to-pin power and ground check on all
connectors. Ensure that power and ground are applied only where
specified. Damage to the unit may result if power or ground is
applied to the wrong points.
3.3.2 DO NOT connect or disconnect the module while power is applied.
3.3.3 DO NOT remove any factory-installed screws. Damage to the units
may result and void any warranties.
3.3.4 ESD (Electro Static Discharge) guidelines shall be followed.
3.4
Wiring
Requirements
3.4.1 Introduction
The installing agency must supply and fabricate all external cables
and mating connectors. The length and routing of external cables
must be carefully studied and planned before attempting installation
of the equipment. Allow adequate space for installation of cable
and connectors. Avoid sharp bends and placing cables near
aircraft control cables. Maintain a MINIMUM clearance of three (3)
inches from any control cable. If wiring is run parallel to
combustible fluid or oxygen lines, maintain a separation of six (6)
inches between the lines.
3.4.2 Power
Wires
All power and ground wires shall be 18 AWG, MINIMUM. Power
ground wires shall be grounded within twelve inches of the unit. All
wires shall be in accordance with MIL-W-22759 or equivalent.
Protect power wires with circuit breakers or fuses located close to
the electrical power source bus.
3.4.3 Audio
Lines
All audio input and output cables shall be 20 AWG, MINIMUM (16
to 18 preferred). All audio lines require twisted, shielded cable with
the cable shields grounded at the source. Twisted shielded cable
must be in accordance with MIL-DTL-27500 or equivalent.