In the PCI console, you set the Clock Source to PCI ADAT for sample accurate sync. You must have the sync out of your last ADAT connected to the Alesis 9-pin jack on your PCI card. The Sample Rate seting must match the sample rate of your ADATs. Digital Performer and AudioDesk users must choose "Sample Accurate" in the Receive Sync window. This is found under the Basics Menu in Digital Performer 3 & AudioDesk 1, under the Setup menu in DP 4 & AD 2.

If you don't have a BRC, or an MTP AV for use with MMC, you will put Digital Performer or Audio Desk in "Slave to External Sync", hit record, and hit play on the ADAT.