GE Druck ADTS 405 User Manual page 75

Druck ADTS 405 User Manual
The ADTS 405 displays any detected errors. Check that the power-up sequence
continues through the following stages without error:
Calibration date.
Self-test.
Measuring ground pressures.
Equalizing system pressures.
Check that the display then changes to show measured altitude and airspeed (CAS or
TAS) values.
1 The displayed values change as atmospheric pressure changes at power-up.
2 The display shows the "WARMUP" message in the lower right corner indicating
that full pressure accuracy and stability may not be achieved. The WARMUP
message clears after 15 minutes. This indication does not inhibit operation and
these tests may proceed without waiting for the message to clear.
3 An automatic zero (if enabled) takes place regularly. The display shows "ZERO"
and the state of the valves, on the mimic panel, change for approximately six
seconds. Commands may still be entered while auto-zero takes place.
Press the MACH key and check the display changes to show Altitude and Mach
measured values.
Pump unit
Set the front panel switch for the pump unit to PUMP ON and check that the pump
power indicator lights.
Press LEAK MEASURE/CONTROL to go to control mode. Enter an altitude aim of 5000
ft by pressing 5, 0, 0, 0, ENTER.
Enter rate or use default rates.
Enter an airspeed aim of 500 knots by pressing SPEED, 5, 0, 0, ENTER.
Check that these aim values are achieved.
Completion
On successful completion of this test procedure, select GROUND, [Go to Ground] wait
until the unit is at ground, switch off and disconnect the power supply.
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K114 Issue No. 9