PowerBox Systems PowerBox Cockpit SRS Instruction Manual page 23

Note: if you are only using one valve for all the wheel doors, you can
by-pass the last four points by selecting OK.
All the settings are now complete, and you will see one final safety
query:
Move your transmitter switch to the "gear down" position. It will now take
a few moments for the Assistant to create the necessary tasks, and
move the doors to the correct position without any fouling or jamming.
If the timing (pauses, opening times and closing times) is not exactly as
you wish, you can change the settings manually at any time.
Select the EXPERT MENUE point in the DOORSEQUENCER menu,
and you will see this screen display:
The PowerBox door sequencer is an in-house development which
offers unprecedented facilities for the programmed movement of wheel
doors. Right at the outset it is important to understand that the system
opens up entirely new possibilities.
For example, the sequencer does not constrain you to use pre-set
modes, forcing you to adopt fixed, pre-determined vectors for retracting
and extending the undercarriage.
The PowerBox door sequencer offers innumerable options, because
the modeller has the freedom to define each step in terms of travel,
sequence and timing. For example, all the wheel doors can be set to
open or close at entirely different speeds. It is also possible to set up
multiple forward-and-back sequences. If the full-size aircraft features a
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