DeCrane Aerospace Audio International
DVD-9101-201-x Installation & Operation Manual
Document # 540339, Rev B, 06/2009
Page 9 of 25
It is recommended to use a metal EMI hood, i.e. part number
D37000ANVL0 or D37000ANE0 from Positronic Industries or
equivalent, for the connector backshell. The shield of the coaxial
cable should be connected to the bonding point inside the EMI
hood by soldering a ¼” braided bonding strap to the shield side of
the size-8 contact where the contact meets the cable and
electrically connecting to the bonding point inside the hood.
3.4.5 Serial Digital Audio Wiring
All AES3 digital audio connections are recommended to use
twisted shielded cable with a cable impedance of 110 +/- 10%
and the shield properly grounded at the source end. Twisted
shielded cable shall be 22 AWG (minimum) and shall be in
accordance with
NEMA WC 27500
.
3.4.6 RS-485 Data Bus Wiring
The DVD-9101-201-x is designed to interface with other DeCrane
Aerospace Audio International equipment via DAAI’s proprietary
RS-485 serial data bus. The data bus shall
be implemented using a
twisted shielded pair cable in accordance with
NEMA WC 27500
.
The wire size for the conductors in this cable shall
be 22 AWG,
MINIMUM. Shield pins are available for connecting data bus
shields when required. Refer to DAAI document 650007 for RS-485
serial data bus design architecture.
3.5 Physical Characteristics
3.5.1 Refer to Section 8.0 for unit dimensions and attachment points.
3.5.2 When mounting the unit, allow sufficient space for mating
connectors.
3.5.3 Chassis material is 6061-T6 aluminum, clear of anodization while
maintaining electrical conductivity to ground from any point on the
chassis via gold irridite treatment, per
MIL-C-5541
.
3.5.4 This unit has an internal fan and ventilation holes in the chassis for
cooling. Installation recommendation requires 1-inch spacing from
other components and structures except the mounting surface for
which the unit should be in direct contact.
3.5.5 Bonding between chassis mounting point and airframe installation
to be <0.01 resistance using a braided copper bonding strap. No
