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B
3.1.13
Factory Test Input
When active, the EGPWS will go into the Factory Test Mode. The TAS Pro-
cessor and the Automatic Test Equipment will interface via RS-232 and the
ATE Test Pins.
J10-113 GSE_PRES# (Factory Test) (Factory Only)
3.1.13.1
TAS ATE Enable Input
The ATE Enable is used to enable the ATE lines for the Anechoic Chamber
and the RGS stations. The TAS Automated Test Equipment will fully test the
TAS system closing the loop around the TAS antenna system by emulating
the functions of an intruder aircraft.
3.1.13.2
TAS Built In Test Equipment (BITE)
BITE enables the TAS Processor to provide internal system performance
monitoring under normal bench conditions, under environmental extremes
and during normal operation. All BITE functions are an integral part of the nor-
mal operational TAS system and do not interfere with normal TAS operations.
The TAS Processor BITE function is responsible for executing the test outlined
below (during cold start or functional test) to ensure that the TAS Processor
and inputs from interfacing components are functional.
1. Automatic System Performance Monitoring (SPM) and Functional Test
The TAS Processor SPM and functional test functions will test the TAS Pro-
cessor for correct operation (detection of internal faults) and test inputs
provided by external system components for correct operation (detection of
external faults). The SPM function and functional test are capable of detect-
ing and initiating the appropriate response to all faults that would affect the
ability of the TAS Processor to meet TAS system safety and performance
requirements.
System Performance Monitoring is performed on a continuous basis. The
tests outlined below are accomplished to ensure correct operation of the
TAS Processor and interfacing components during normal operation.
The purpose of the TAS Processor automatic system performance
monitoring (SPM) and Self Test is to detect malfunctions that degrade
or preclude TAS protection.
Rev 3, August/2002
NOTE
10609I03.CDL
KMH 880/KTA 870
Page 3- 10
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