I have connected an Matrox Axio HD and a Black Magic HD Extreme to my Yamaha 03D mixer - both with AES in and out. The mixer is set to generate the clock and the axio works ok and syncs to the mixer. The BM HD Extreme does not and the mixer says that it is not in sync. Can this somehow be done - to sync the BM HD Extreme to a wordclock or somethinge else ???