Chapter 3: Connecting Pro Tools | HD I/O 19
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 synchronization among the devices. For an example of connecting
multiple Avid HD audio interfaces, see Figure 6 below.
To make Loop Sync connections:
1
Connect 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 6. 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