ZWO ASIAIR PRO User Manual page 19

Filter Wheel Settings
After selecting and connecting your filter wheel you can customize the name of
the filter wheel positions.
You can select a filter position and the wheel will rotate to the filter hole position.
Tap Calibrate EFW if you need to recalibrate your wheel positions.
Focuser Settings
After connecting the focuser you can change parameters such as fine and coarse
steps, backlash settings and send the focuser to a specific position, or reverse
the focuser In/Out commands. Please refer to ZWO EAF Manual for detailed
operating instructions.
It is recommended to turn on the beep.
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