clock problems

hi all, i temporarily have a mix3 system residing in my living room along next to my LE (toolbox amIII) system... i have hooked up the mix system to my monitors through my flying cow (ad/da converter) aes/ebu i noticed a problem when playing back 48k sessions on the mix system, they play as if they are clocked at 44.1 (sloooowly) even though the 888's are slaved to the USD and all front panel indicators read 48k... the same sessions play fine on the LE rig. I know that the audio is 48k, and playing the files in peak on the tdm rig gives the same slooow results.. i did managed to get them to play by going into session setup and changing the clock source to superclock... am i correct that the USD should be generating the clock? and is there any way possible that the 1-2 AES/ebu output of the first 888 being connected to the aes input of my flying cow (which also has the spdif in/out connected to my amIII) could be mucking up the clock? (the flying cow cannot use both AES and spdif simultaneously, i have to manually set it) 44.1k sessions were playing fine on the big rig the whole time.... i know pt pretty well, but this is my first time with USD and whatnot thanks for the help.

Hello, If the 888 is slaved to a USD, you will want the Sync Mode set to Internal in the session setup window. This way the 888 is clocking to its internal clock or the USD when its connected and powered on. It sounds like you may have had the Sync Mode set to AES/Digital and Pro Tools was clocking to the flying cow. Mike

How difficult would it be to add a "Slave" selection to the word clock menu? I can't tell you how many times there has been confusion when you tell someone "Set the clock to internal so that it syncs off of the x." This confuses some people because they think are clocking internally.

ok, i have protools working fine now..... but when i use peak tdm, i still get the same problem... 48k files playing back at 44.1 when i change a 48k file in peak to 44.1 it plays back at the proper pitch.. and the sample rate display on the 888's and the USD follows suit (meaning when i have a 48k file playing, the display says 48k and so forth...) but something is still amiss, do i have to set the USD manually to match the sample rate when using peak?