User's Manual

ROCKWELL COLLINS
COMPONENT MAINTENANCE MA NUAL with IPL
TDR-94, PART NO 622-9352
STEP PROCEDURE DESIRED RESULTS
17.10 MODE-S All-Call Interrogations (Appendix F, Paragraph (h))
Interrogate the transponder with MODE-S ONLY ALL-CALL
(UF=11) interrogations. Verify that the transponder replies with
DF=11 replies that have the same MODE-S Address as the one
provided to the transponder via the discrete MODE-S Address
inputs.
Verify that the Transponder replies with DF=11 replies that have
the "CA" field set to one of the following "0, 4, 5, or 7".
N
OTE: RTCA Document No. DO-181, paragraph 2.2.14.4.5,
Change 3, pages 4-5, totally redefined the "CA" filed.
Prior to Change 3, the "CA" field was defined for codes "0"
through "3" only, and the code remained fixed for the UUT after
the installation was completed.
Change 3, now defines codes "0, 4, 5, 6, and 7" with codes "1,
2, and 3" being "Not Defined". In addition, the "CA" field is no
longer fixed, but will be dynamic depending on the UUT status
at the time of reply.
17.11 ATCRBS-ONLY All-Call Interrogations (Appendix F, Paragraph
(i))
Interrogate the transponder with ATCRBS MODE-A ONLY
ALL-CALL interrogations that have the nominal pulse spacing
and signal level of -50 dBm. Verify that the transponder does
not reply to the interrogations. Essentially, a reply ratio NOT
GREATER THAN 1% constitutes the NO REPLY condition.
Interrogate the transponder with ATCRBS MODE-C ONLY
ALL-CALL interrogations having the nominal pulse spacing
and signal level of -50 dBm. Verify that the transponder does
not reply to the interrogations. Essentially, a reply ratio NOT
GREATER THAN 1% constitutes the NO REPLY condition.
17.12 Squitter Appendix F, Par agraph (j)
The requirement to demonstrate proper compliance with
this paragraph has been stated in steps 9.1 and 9.2 of this
procedure and will not be repeated here.
18.0 MAINTENANCE FAULT COUNTER RESET
The steps of this test may be accomplished using option 17 of
the automatic test program if so desired.
Final Performance (Customer Acceptance) Test. Cont.
Table 1001/Table 34-50-96-99A-009-A01
34-50-96
Page 1055
May 18/06