I have find the solution.
Many hours after
When I create a New session in logic pro 10, nothing about the sampling rate is asking, the sync seems to be good whith the sq in 96 khz, and so I was thinking the session is automatiqualy create in 96 khz.
Fynally not, it was in 44,1 khz by default in logic.
When you rec with the desk in 96 khz and the session in 44,1 khz, nothing appear to say you there is a problem, and you can rec during 3 min and 30 s with no evident problem. After this time the rec stop with ” Hard disk too slow” message, not a clear message about a sampling rate issue.
Maybe, Logic develloppers has to improve this.
For you, Allen and Heath develloppers :
How to dowsizing the samplerate of the desk? No solution actually?
Please, if in the future the dowsizing of the samplerate, is available, could you devellop a function to autosync the desk to the session daw? In this case, if you change often in between differents sessions, you don’t need to manually change the sample rate all the time.
RME do this well
Thanks a lot guys