I'm a ProTools user. I'm gonna ask basic questions, don't get offended, just trying to help, but are you correctly assigning the ADAT input to your ProTools track? Is your PT track an audio track or a Aux track? Could you check under SetupI/O and verify that ADAT is in fact there? In fact, have you *ever* succeeded at getting input signal from the ADAT pipe without the H8000 bur from a different ADAT source? Lastly, how is your "Input Only Monitoring" setup? Are you record-enabling the track to see whether there is signal coming through?