Specifications

Chapter 3: Connecting HD I/O 17
Connecting Loop Sync
If you are using two (or more) Pro Tools audio interfaces or a SYNC peripheral, Loop Sync must be
connected to maintain proper clock among the devices. For an example of connecting multiple Avid
HD audio interfaces, see Figure 4 below.
To make Loop Sync connections:
1 Connect (daisy-chain) the Loop Sync Out of each interface to the Loop Sync In of the next interface
with a BNC cable.
2 Connect the Loop Sync Out of the last interface to the Loop Sync In of the primary interface or SYNC
peripheral with a BNC cable.
Figure 4. Making DigiLink and Loop Sync connections with two Pro Tools|HD cards, one HD OMNI, and
three HD I/Os
Pro Tools|HD Accel Core card
Pro Tools|HD Accel card