User Manual

Table Of Contents
maintenance 523-0809018
4.9. INITIAL INSTALLATION CHECK OUT PROCEDURE.
Follow the procedures that follo w to make sure the initial installation of the TSS-4100 performs well.
4.9.1. I
nitial Transponder Check Out.
Follow the procedures described in Paragraph 4.8.8.
4.9.2. I
nitial TCAS Check Out.
Follow the pr ocedu res that follow to make sure the initial installation of the TSS-4100 performs TC AS functions correctly.
4.9.2.1. I
ntroduction.
NOTE
These tests simulate TCAS-equipped aircraft at d ifferent altitudes with altimeter test equipment, but simulate the
aircraft as stationary in space.
The instructions in this section use the TCAS test set to s imulate certain ight scenario s. The activity of intruder aircraft is simulated
by the TCAS test set. That activity simu lates the combined relative horizontal and vertical movements of both aircraft in an actual
ight situation. For example, in an actual ight situation in which a TCAS equipped aircraft and an intruder are approaching at
the same altitude both with a speed of 360 kts, the relative approach speed is 720 kts. This situation can be simulated by giving
the intruder a speed of 720 kts. Refer to Figure 4-10 for the parameters involved in the ight scenarios (CPA = Closest Point of
Approach).
Figure 4-10. Simplied Flight Scenario and Parameters
4.9.2.2. The altitude of the TCAS aircraft is simulated by means of r adio and barometric altimeter system test equipment. The
TCAS test set allows entry of intruder-simulated altitude and vertical speed. A change in relative vertical speed can be simulated by
changing the intruder vertical speed while the test runs.
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