User's Manual

ROCKWELL COLLINS
COMPONENT MAINTENANCE MA NUAL with IPL
TDR-94, PART NO 622-9352
SUBTASK 34-50-96-870-005-A01
E. Typical TDR 94/94D ATC/Mode S Transponder Installations
(1) Introduction
(a) This paragraph gives you an overview of the TDR 94/94D operating environment.
For installation detail, refer to the TDR 94/94D ATC/Mode S Transponder,
Installation Manual which is contained in the Collins Pro Line II Comm/Nav/Pulse
System Installation Manual, CPN 523-0772719.
(b) The TDR 94/94D ATC/Mode S Transponder offers a wide range of installation
options. First you should recognize the difference between the TDR 94 and the
TDR 94D; the TDR 94 is for single antenna installations, while the TDR 94D can
operate with single or dual antenna installations. You are likely to find the TDR 94D
in most TCAS installations because dual antennas are required in TCAS.
(c) Both transponders can accept control data in CSDB or ARINC 429 format; this is
set at installation by means of special external straps and is determined by the type
of control being used.
(d) The following paragraphs and accompanying diagrams descr ibe various installation
configurations. The first diagram, Figure 15/GRAPHIC 34-50-96-99B-082-A01,
show s the various strapping options that must be considered for all installations.
These strapping options are applicable to all installations even though they are
not shown on the other block diagrams.
34-50-96
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May 18/06