Chapter 2: Expanded Pro Tools|HD Systems
3
chapter 2
Expanded Pro Tools|HD Systems
To ensure maximum track counts and trouble-
free operations, it is important that PCI cards are
installed in the appropriate slot locations.
Cards and Slot Order
When installing ‘cards’ in a computer or an ex-
pansion chassis, group cards according to type
and install them in the following order, based
on your Pro Tools system configuration:
Computer Configuration
1
HD Core card
2
HD Accel cards
3
HD Process cards
4
SCSI accelerator cards
Computer Configuration with Expansion
Chassis
1
Expansion chassis host card
2
SCSI accelerator card
Expansion Chassis Configuration
1
HD Core card
2
HD Accel cards
3
HD Process cards
Sample Rate and Multiple Cards
Pro Tools|HD supports sample rates of 44.1 kHz,
48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, and
192 kHz. However, due to the processing load
required for 176.4 kHz and 192 kHz sessions, a
maximum of four HD-series cards can be used at
these higher sample rates.
If your system includes more than four
Pro Tools|HD-series cards, the fifth card (and
any additional cards) will automatically be
taken offline when Pro Tools sessions are set to
176.4 kHz or 192 kHz. You do not need to re-
move any cards or cables; Pro Tools automati-
cally deactivates the additional cards, and reac-
tivates them when the sample rate is switched to
96 kHz or lower.
Any audio interfaces connected to inactive cards
will go offline.
For maximum track count with
Pro Tools|HD Accel systems, 64-bit PCI is
required. If using a CPU with mixed slot
types, only the 64-bit slots should be used.
For a complete and current list of supported
configurations of computers, expansion
chassis, and hard drives, visit the Digide-
sign Web site (www.digidesign.com/com-
pato).
Expanded Systems Guide.book Page 3 Friday, March 26, 2004 6:47 AM
