If you just want to have the DAW chase the ATR, all you need to do is stripe the ATR with TC and run it as a "Code only Master." Feed TC to your interface- if it accepts it. Don't the need the ES -50 for that. Only reason for the ES-50 is to have two machines running in sync, or locked to video- the original application for the ES-50- though I don't know why you would want to that with the 2T.