DeCrane Aerospace Audio International
MCD-9101-101-x Installation & Operation Manual
Document # 540360, Rev IR, 03/2008
Page 9 of 28
3.3.7
ESD
(Electro Static Discharge) guidelines shall be followed.
3.3.8
No
scheduled maintenance is required to ensure continued
airworthiness.
3.4
Wiring Requirements
3.4.1 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 3" from any control cable. If wiring
is run parallel to combustible fluid or oxygen lines, maintain a
separation of 6" between the lines.
3.4.2 Power Wires
The chassis shall be electrically bonded to the airframe structure by
a conductive mounting point with <0.1 resistance using <50
impedance cable. Aluminum wool, nylon webbing impregnated with
aluminum oxide abrasive or fiber bristle brushes are the approved
tools for removing anodized surfaces at mounting point where the
bonding wire is attached. Power and Ground wires shall be in
accordance with
M227589
or equivalent.
3.4.3 Serial Digital Audio Wiring
All serial digital audio wire connections must be twisted shielded
cable with the shield properly grounded to the dedicated pin at the
source end to the dedicated pin at the load end. Twisted shielded
cable shall be 22 AWG (minimum) for digital audio signals and shall
be in accordance with
NEMA WC 27500
. Cable impedance must
be 110 +/- 10%.
