DME SYSTEM - SELF TEST

Self Test

Push the test switch on the DME interrogator to start a DME selftest.

Front Panel Displays

The LED status indicators go through this sequence:

· The LRU status and control fail LEDs come on red for two seconds.

· The LRU status LED changes to green.

· All LEDs go off for two seconds.

· The applicable LEDs come on to show the LRU status.

The red CONTROL FAIL LED shows when the tuning source is invalid.

The LRU STATUS LED shows interrogator test results. The LRU STATUS LED shows green for a good test or it shows red for a test failure.