Specifications

Pro Tools Reference Guide78
4 Select the Identify option, located in the lower
left corner of the Hardware Setup. This illumi-
nates all the LEDs on the front panel of the se-
lected audio interface.
5 Make a note of which interface in your studio
setup corresponds to the identified interface.
6 Repeat the above steps for each additional audio
interface in your setup.
Configuring Avid HD Audio
Interfaces
HD OMNI supports up to eight channels of simul-
taneous I/O and multiple I/O formats (such as ana-
log, AES/EBU, ADAT Optical, and S/PDIF). HD
I/O, 192 I/O, 192 Digital I/O, 96 I/O, and 96i I/O
audio interfaces support sixteen channels of simul-
taneous I/O and multiple I/O formats (such as ana-
log, AES/EBU, ADAT Optical, S/PDIF, and
TDIF). HD MADI supports up to 64 channels of
MADI I/O.
The Main page of the Hardware Setup is where
you define which physical inputs and outputs on
your audio interface are routed to available inputs
and outputs in Pro Tools. You can think of this
window as a patchbay that allows you to route any
of the inputs or outputs on your audio interfaces to
channel assignments in the Pro Tools mixer.
Additional pages are available to configure other
controls for each audio interface (such as setting
operating levels).
To configure Avid HD audio interfaces:
1 Choose Setup > Hardware.
2 From the Peripherals list, select the audio
interface connected to the first card in your
system. This will be the interface at the top of
the list.
3 Click the Main tab.
4 From the Clock Source pop-up menu, select the
appropriate clock source for the interface.
In many cases, you will use
Internal. The other
choices are for resolving Pro Tools to external
clock sources. Depending on your audio interface,
Clock Source options can include:
AES/EBU
[Encl], S/PDIF, Optical [Encl], AES/EBU 1–8, TDIF,
ADAT,
and Word Clock (optional Word Clock rates
are available when operating at higher sample
rates).
5 If you want to send clock output to other de-
vices attached to the audio interface, select the
appropriate output from the
Ext. Clock Output
pop-up menu.
6 Select which digital I/O port on your audio in-
terface enclosure is active by selecting the cor-
responding option under
Digital Format.
Depending on the type of interfaces in your
system, choices include
AES/EBU, S/PDIF, and
Optical (S/PDIF)
. Selecting Optical (S/PDIF) re-
sets the Optical I/O port (which is, by default,
eight channels of ADAT Optical I/O) to two
channels of S/PDIF Optical I/O.
Hardware Setup for HD I/O, Main page
Press Command+Left or Right Arrow keys
(Mac) or Control+Left or Right Arrow keys
(Windows) to move though the different
pages of the Hardware Setup.