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button to continue. If you do not push the self-test button within
three seconds, self-test ends. When test levels 2 through 5 end,
there is an aural message PRESS TO CONTINUE. Push the selftest
button to go to the next test level.
Level Two Self-test - Current Faults
A level two test begins with the aural message, CURRENT
FAULTS. If there are no current faults, you hear the aural
message NO FAULTS. If there are faults, the GPWC
annunciates the faults one at a time. A short or long cancel
ends the level two test.
Level Three Self-test - System Configuration
A level three test annunciates the GPWS configuration. A level
three test begins with the aural message SYSTEM
CONFIGURATION. A short cancel causes the test to go
immediately to the next configuration item. A long cancel
ends the level three test. A level three test provides this
information:
* GPWC part number
* GPWC modification status
* GPWC serial number
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* Application software version
* Configuration software version
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* Software version
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* Terrain database version
* Envelope modulation database version
* Boot code version
* Aircraft type
* Audio menu
* Altitude callout menu number
* Selected options.
Level Four Self-test - Fault History
Level four test shows the GPWS fault history over the last ten
flights.
A level four test begins with the aural message FAULT
HISTORY. If there are no faults in the flight history memory,
you hear the aural message NO FAULTS. If there are faults in
the flight history memory, you hear the most recent faults
annunciate first. You hear the faults in this order:
* FLIGHT X (X is the most recent flight leg number)
* Internal faults for flight X
* External faults for flight X
* Go to next oldest flight leg and repeat.
A short cancel causes the test to go immediately to the next
flight leg. A long cancel ends test level four.
Level Five Self-test - Warning History
Level five test show GPWS alerts over the last ten flights.
A level five test begins with the aural message WARNING
HISTORY. If there are no alerts in the flight history memory, you
hear the aural message NO WARNINGS. If there are alerts in
the flight history memory, you hear the most recent alerts first.
You hear the alerts in this order:
* FLIGHT X (X is the most recent flight leg number)
* GPWS alerts for flight X
* Go to next oldest flight leg and repeat.
A short cancel cause the test to go immediately to the next flight
leg. A long cancel ends test level four.
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General Description
The GPWC has a level six discrete input test.
The level six self-test can be done from the GPWC or the GPW
module. Use a 600 ohm headphone to listen to the test
information when you do the test from the GPWC. Plug the
headphone into the jack on the front panel of the GPWC.
Use the self-test button on the front panel of the GPWC or the
GPW module to get access to level six. The self-test buttons
have these two modes:
* Short cancel - push the button for less than two seconds
* Long cancel - push the button for more than two seconds.
Use the self-test buttons for these functions:
* Start self-test level one
* Go to the next item or flight leg within a test
* Go to the next self-test level
* End the self-test.
When test levels 2 through 5 end, the aural message PRESS TO
CONTINUE shows. Push the self-test button to go to the next test
level. When the level one test ends, there is no aural message.
If you do not push the self-test button within three seconds, the
self-test ends.
Level Six Self-test - Discrete Input Test
A level six test finds changes in discrete inputs.
　
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