Setup guide

Chapter 4: Configuring Your Pro Tools System 49
Configuring Pro Tools Hardware
Settings
In the Hardware Setup dialog, Pro Tools lets you
set the default sample rate and clock source for
your system, as well as a range of controls spe-
cific to each type of audio interface.)
Default Sample Rate
The Sample Rate setting appears as the default
sample rate when you create a new session. (This
setting is available in the Hardware Setup dialog
only when no session is open.)
To change the default Sample Rate:
1 Choose Setup > Hardware.
2 Choose the sample rate from the Sample Rate
pop-up menu.
3 Click OK.
High Sample Rates and Expanded Systems
With 176.4 kHz and 192 kHz sample rates, as
many as four Pro Tools|HD cards can be used.
Any additional cards (up the total system maxi-
mum of seven cards) will switch to Inactive
mode. The cards and any attached peripherals
will become active again when the sample rate is
set to 96 kHz or lower. See the Pro Tools Ex-
panded Systems Guide for more information.
Clock Source
The Pro Tools Hardware Setup dialog lets you se-
lect the Clock Source for the system.
Internal If you are recording an analog signal di-
rectly into Pro Tools, you will usually use the
Pro Tools Internal clock source.
External If you are transferring material into
Pro Tools from an external digital device, or if
you utilize a common house clock signal, you
will synchronize Pro Tools to that digital device
or common signal. Depending on your audio in-
terface, external options can include AES/EBU
[Encl], S/PDIF, Optical [Encl], AES/EBU 1–8,
TDIF, ADAT, and Word Clock. For details, refer
to the Pro Tools Reference Guide or the guide for
your audio interface.
To select the Clock Source:
1 Choose Setup > Hardware.
2 Choose the clock source from the Clock
Source pop-up menu.
3 Click OK.
You can change the sample rate when
creating a new Pro Tools session by
selecting a different sample rate in the
New Session dialog.
Hardware Setup dialog for 192 I/O, Main page
Your digital input device must be connected
and powered on for Pro Tools to synchro-
nize to it. If your input device is not powered
on, leave the Clock Source set to Internal.