K114 Issue No. 9
5 - 14
Testing and Fault Finding
Testing the Altimeter Encoder Option
To enable and disable this Altimeter Encoder facility access the configuration menu.
When enabled, this facility will be available from power-up of the ADTS 405 with the
settings held in non-volatile memory.
Configuring and enabling the Altimeter Encoder Option
Press and hold down F1 and press SETUP to enter the configuration
menu. Release both keys.
Press [MORE], [DISPLAY/OPTIONS], [DISPLAY TYPE], [NEXT], [ENCODER].
Check the display shows "Encoder" is selected.
Press [SAVE], then repeatedly press CLEAR/QUIT until the display shows the
following:
Note: With an incorrect bit combination such as all zeroes, the display shows "ENCODER
ERROR" in the place of the decoded value.
If the above procedure is unsuccessful, check the continuity of the Altimeter Encoder
cable.
If faulty, replace the cable.
If the continuity of the cable is correct, return the ADTS 405 to the repair depot.
Alt 5000
ft
Aim 5000
D2 to C4>00001010010
CODE 5000
ADTS 405 mode
value
units of measurement
bit codedecoded value
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