Specifications

Chapter 2: Expanded Pro Tools|HD Systems 7
4 Connect the Port A connector of the FlexCa-
ble to Port A on the second card. Push down
gently but firmly until the cable is fully con-
nected to the card. Attach the other end of the
FlexCable (labeled Port B) to Port B on the first
card.
5 Verify the connection. Make sure the FlexCa-
ble ports seat flat against the sockets on the
Pro Tools|HD cards, and are firmly attached.
6 For systems with more than two cards, con-
nect each additional card to its preceding card.
Use FlexCables to connect card pairs together, as
described above, until all cards are connected.
(Each expansion card is packaged with a FlexCa-
ble.)
7 Close the computer case.
Connecting
Audio Interfaces
All Pro Tools|HD audio interfaces require Dig-
iLink connections. When using multiple inter-
faces, you must also connect Loop Sync between
all Pro Tools|HD audio interfaces. When using
multiple Legacy I/Os (Pro Tools 24|MIX-series
interfaces such as the 888|24 I/O and
882|20 I/O) you must connect Slave Clock to all
Pro Tools|24|MIX-series audio interfaces.
Recommended Ordering of Interfaces
If your setup includes different types of audio
interfaces, install them in the following order:
192 I/O or 192 Digital I/O Use as the primary au-
dio interface. These interfaces provide the high-
est fidelity clock source for your system.
96 I/O Use as the primary interface (if a 192 I/O
or 192 Digital I/O is not installed), or as an ex-
pansion interface connected to the Expansion
port of the primary interface.
96i I/O Use as the primary interface if no other
Pro Tools|HD interfaces are installed, or as an
expansion interface connected to the Expansion
port of another Pro Tools|HD interface.
Legacy I/Os See “Connecting Legacy Audio In-
terfaces” on page 10.
Top view of TDM FlexCable connections for two
Pro Tools|HD cards
Port B
Port B
Port A
Port A
Port B Port A
Port APort B
HD Core card in PCI slot 2
HD Accel (or Process) card in PCI slot 3
If you have at least one 192 I/O or
192 Digital I/O in your Pro Tools system, it
should be the primary audio interface and
Loop Sync master.