Technical data

Product Specification
HIF-2121/R5 CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO: 965-1176-601 REV: D SHEET 118
6.10.6.1 Level 1 self-test
Level 1 self-test is divided into three functions - the preamble, short level 1 self-test and long level 1 self-test.
During level 1 self-test, a Short Cancel terminates the self-test level and “CURRENT FAULTS” is annunciated to indicate
activation of level 2 self-test.
During level 1 self-test, a Long Cancel terminates the entire self-test sequence.
6.10.6.1.1 Preamble
In most conditions, self-test will operate and annunciate some indication as to the operational condition of the EGPWC,
unless it has been inhibited, e.g. in-air (see Note). Self-test checks if configuration errors have been detected before it starts
the main self-test process. The configuration module status, aircraft configuration database CRC, aircraft configuration
database compatibility and the aircraft type are all checked prior to starting self-test. If any of these faults are detected, self-
test will annunciate the detected fault and terminate the self-test process. The self-test preamble is initiated automatically
upon self-test activation. The process and results are described in Figure 6.10.6-1.
Start
Self
Test
Configuration
source valid *
"Configuration Module
Read Error" voice
Config Data
Base
CRC Valid
"Application
Data Base
CRC Failed"
voice
"Application
Data Base
Failed"
voice
Continued on
Fig 6.10.6.2-1
Yes
No
NoNo
Yes
Yes
Terminate
Self Test
Start Short
Section of
Level One
Self Test
Self Test
NOT
Inhibited
Aircraft
Type
Valid
"Configuration
Type Invalid"
voice
Yes
Config Data
Base Valid
Yes
No
No
* configuration source for EM6 it is the Configuration Module.
FIGURE 6.10.6-1: SELF-TEST PREAMBLE