User's Manual Part 2

T
2
CAS / Part No. 9000000
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
34-43-20
15 Feb 2003
Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
3--1
ELECTRICAL INSTALLATION
1. General
This section gives electrical installation procedures, power distribution, and interconnect
information for each component on the T
2
CAS system.
2. Equipment and Materials
For new T
2
CAS installations, refer to Table 1--1 for RCZ--852 Transponder Installation Kit
information. For all other components, refer to the applicable Outline and Installation Diagram
in the MECHANICAL INSTALLATION section for mating connector part numbers.
3. Electrical Installation Procedure
The information necessary to provide the electrical interconnections is contained in the
following paragraphs. Refer to Section 4, LOADING/GRADIENT SPECIFICATIONS, for a list
of the signal names used in the interconnect diagrams and tables.
NOTE: Unless otherwise specified, all wires shall be stranded #22 AWG.
NOTE: All ARINC 429 Data Bus wires shall be stranded #22 AWG twisted shield wire. All
outer shields shall be terminated to the airframe ground. Unshielded portions of the
cable and shield ground wires should be kept to a minimum length to minimize RF
susceptibility.
NOTE: All electrical installations must be in compliance with SFAR --88.
4. Electrical Installation
A. TT-- 950/951/952 T
2
CAS Computer Units
Figure 3--1 shows some general types of T
2
CAS system installations, using various
combinations of controllers (control panels) and transponders.
The various installation options require different electrical connections as described in the
paragraphs that follow.
The T
2
CAS Computer Unit uses programming and configuration straps to select or
deselect various TCAS functions. In addition, the T
2
CAS uses the APM and ASDB to
select or deselect various TAWS/RWS functions.
The T
2
CAS Computer Unit ARINC 600 connector layout is shown in Figure 3--2. The
contact arrangement for the various connector plugs are shown in Figure 3-- 3 thru
Figure 3--8. Figure 3--9 shows the connector pin layout for the DATA LOADER connector
located on the front of the computer unit.
B. APM
Figure 2--6 shows a typical APM installation. An APM can be mounted to existing aircraft
structure or can be mounted to the ACSS’ APM mounting b racket that is secured to the
aftsideoftheT
2
CAS computer tray connector, reference Figure 3--3. If the Customer
specifies the ACSS APM mounting bracket, the Contractor shall manufacture and provide
this APM bracket sub kit for this Customer’s T
2
CAS installations