ok Tom, thank you for the tip !

An other question :
Before starting ACP, I start FocusMax which opens MaximDL.
I never noticed before it was connecting the CCD camera. is it normal ? I thought ACP would do it the first ?

And I had a problem in fact. The filter wheels started to rotate when I started FocusMax (I did not start ACP at all) without stopping.
Did Someone already experience that ?

I had to shutdown the CCD to stop this (our FWs takes power from the camera).
The I started again the CCD then focusMax and it was fine.
This is in fact the 2d time I experience the problem, but first time I was not sure from where it was coming. Here it semms it was linked to start of FocusMax.

Any comment ?
thanks,
emmanuel