DVD-401-01-x Installation & Operation Manual
Document # 540254, Rev IR, 10/2002
Page 9 of 18
4.0 Wiring
Requirements
4.1
Introduction
The installing agency shall supply and fabricate all external cables. The
length and routing of external cables shall 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.
4.2 Power Wires
All power and ground wires shall be 22 AWG, MINIMUM
,
shielded twisted
pair with the shield properly bonded at one end only. Power ground wires
shall be bonded to electrically conductive chassis mounting point with
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wisted shielded pair cable
shall be in accordance with the standard specification of NEMA WC 27500
or equivalent.
4.3
Video Lines
Composite video connections shall be shielded coaxial cable in
accordance with the military specifications of M17/94-RG179 or
equivalent.
4.4 AI’s Proprietary RS-485 Data Bus
4.4.1 The DVD-401-01-x
is designed to interface with other Audio
International equipment via AI’s proprietary RS-485 serial data bus.
The data bus shall
be implemented using a twisted shielded pair
cable in accordance with the standard specification of
NEMA WC 27500 or equivalent. The wire size for the conductors
in this cable shall
be 22 AWG, MINIMUM. The shield shall
be
connected everywhere a shield pin is provided. Shield terminations
shall be made as close to the connector pin as possible.
4.4.2 All modules on AI’s proprietary RS-485 data bus shall
be connected
in a ‘daisy-chain’ configuration. AI’s proprietary RS-485 data bus
specification is available upon request.
