DVD-9101-101-x Installation & Operation Manual
Document # 540311, Rev A, 10/2006
Page 9 of 27
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.
3.4.2 Power Wires
All power input and power ground connections to the unit must be
22 AWG (minimum) using shielded twisted pair wiring (
MIL-W-
22759
) with the shield properly terminated (bonded) at the source-
end only. This unit provides for common circuit ground and chassis
ground connections. Both circuit and chassis grounds are
referenced to pin 2 of connector P1. Circuit/chassis ground
connection shall be bonded to an electrically conductive chassis
mounting point or frame ground with less than 0.001
Ω
resistance
using less than 50
Ω
impedance cable.
3.4.3 Video Lines
All serial digital video wiring connections are recommended to use
PIC V76261
shielded coaxial. Serial digital video provided in
SMPTE 259M format.
All connector types shall be compatible with
above-listed wiring requirements.
3.4.5 Serial Digital Audio Wiring
All 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
Ω
+/- 10%.
