I am transferring DAT tapes from Tascam DA P1 to Tascam DR100mk3 and after setting source input to digital and hooking up proper connections I hit record, it goes into pause with no signal and I get a message saying Din signal mismatch. I've done this before with existing cable and not had this issue. I've also tried two other DAT machines with coax digital outs with no success. Any ideas? Bob and Melanie