User guide

Pro Tools|HD User Guide18
If you are connecting 96 I/O or 96i I/O audio in-
terfaces to your system in addition to HD OMNI,
HD I/O, 192 I/O (or 192 Digital I/O), be sure to
connect the HD OMNI, HD I/O, 192 I/O, or
192 Digital I/O to your HD Core card as the pri-
mary interface, followed by any additional
HD I/O, 192 I/O, or 192 Digital I/O connected
to subsequent Pro Tools|HD cards. Then con-
nect 96 I/O interfaces to subsequent cards, or to
other interfaces, then connect 96i I/O inter-
faces.
You can also connect a single Pro Tools|HD in-
terface to each Pro Tools|HD card in your system
using the provided DigiLink cables. (Note that
there is no advantage or disadvantage to this
configuration over daisy-chaining interfaces.)
Connecting Loop Sync
If you are using two or more Pro Tools|HD audio
interfaces or a SYNC peripheral, Loop Sync must
be connected to maintain proper clock among
the devices.
To make Loop Sync connections:
1 Connect the Loop Sync Out of each interface
to the Loop Sync In of the next interface with
the BNC cables included in your I/O packaging.
2 Connect the Loop Sync Out of the last inter-
face to the Loop Sync In of the primary interface
or SYNC peripheral.
Figure 5. Making DigiLink and Loop Sync connections with HD OMNI and HD I/O.
12-foot DigiLink Mini
Pro Tools|HD Core card
to DigiLink cable
Loop Sync
18-inch DigiLink
Mini cable
cables