User's Manual

Table Of Contents
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
T
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CAS/Part No.9005000
Push and hold the TEST button/switch on the ATC/TCAS controller for a few
seconds to start the test. When the test mode becomes active, the words “TCAS
Test” are transmitted once aurally. In addition to the TCAS test pattern, RA
indications and a white (some displays may be red) TCAS TEST annunciation
are displayed on the applicable display(s). Refer to Figure 1-17 for a typical test
pattern display on the VSI/TRA.
At the completion of the test (8 seconds), the words “TCAS Test Pass” should be
transmitted once aurally. In addition, the test pattern is removed from the
display(s) and a TCAS PASS annunciation is displayed.
NOTE:
Not all displays will annunciate “TCAS PASS”.
If the test fails, the wordsTCAS Test Fail” are transmitted once aurally and a
TCAS FAIL annunciation is displayed on the applicable display(s).
If the TCAS short test fails, do the TCAS Computer Unit Self-Test procedures
referenced in paragraph 4.C. to determine which LRU or subsystem is not
functioning properly. To troubleshoot the system, refer to the procedures in the
FAULT ISOLATION section.
(2) Extended Test Mode
The extended test mode provides a flight deck initiated test that displays various
pages of text information that is selected by the ATC Mode S control panel 4096
code switches. This test mode is accessible only when on the ground and cannot
be initiated while airborne.
The extended test mode is used for maintenance purposes only. It displays
various pages of text information containing the TCAS software part number,
fault messages, status of program pins, analog and digital inputs, and other
aircraft parameters.
NOTE:
Not all TCAS displays support this extended test mode. Extended Test
mode is not enabled for T
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CAS part numbers 9005000-10000, -10101,
-10202, -10204, or -11203.
To start the test, push and hold the TEST button/switch on the ATC/TCAS
controller for a minimum of 9 seconds. In addition the conditions that follow must
occur:
TCAS is in Standby
The selected transponder is in Standby
Aircraft is on the ground (The AIR/GND discrete [RMP-5K] is grounded)
Landing gear is extended (Landing Gear discrete [RMP-13F] is grounded).
Once the extended test mode is established, the 4096 code switches on the
ATC/TCAS controller are used to select the desired maintenance page for
display. Table 5-3 lists the extended mode page names and numbers and the
corresponding 4096 Ident Code number.
Table 5-3: Extended Test Menu Selections
5-4
04 Nov 2014
34-45-29
Pub. No. 8600200-001, Revision 004
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