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Chapter 5: Making Studio Connections 39

Connecting Equipment with

Digital Audio Ins and Outs

Each Pro Tools|HD audio interface includes at

least one AES/EBU, S/PDIF, or Optical (ADAT)

digital option. For example, the HD I/O (with an

HD I/O Digital Expansion Card) includes addi-

tional AES/EBU and optical ports, as well as

TDIF, AES/EBU at 192 kHz, and sample rate con-

version on input. The 96i I/O provides two

channels of S/PDIF only. (See the documenta-

tion for your audio interface for details.)

The following example provides basic setup

guidelines for connecting Pro Tools to a DAT re-

corder.

To connect your Pro Tools system to a DAT

recorder:

1 Connect the AES/EBU or S/PDIF output on the

enclosure of your Pro Tools|HD audio interface

to the AES/EBU or S/PDIF input of your DAT

deck. By default, this port is assigned to

Pro Tools Output 1–2.

2 Connect the AES/EBU or S/PDIF input on the

enclosure to the AES/EBU or S/PDIF output of

your DAT deck. Route the digital input to

Pro Tools inputs in the Hardware Setup dialog.

Connecting Effects Units

The HD I/O, HD OMNI, HD MADI, 192 I/O,

192 Digital I/O, and 96 I/O let you connect ana-

log or digital effects units to your Pro Tools sys-

tem, and use them as inserts or make them the

destination for effects sends and returns. (The

96i I/O supports a single pair of hardware inserts

using channels 1–2. See the 96i I/O Guide for

more information.)

In Pro Tools, up to ten inserts are available on

each audio channel. Each insert can be a hard-

ware insert (or software plug-in), and can be

mono or stereo.

When using a hardware insert, you must con-

nect the device to matching inputs and outputs

on your system. For example, a stereo insert

could use outputs 7–8 and inputs 7–8 for the

sends and returns, respectively. Routing the

physical inputs and outputs of the interface to

Pro Tools inputs and outputs can be done in ei-

ther the Hardware Setup dialog or I/O Setup di-

alog. From I/O Setup, inserts can also be defined,

and their channels mapped to audio interface

channels (for more information, see the

Pro Tools Reference Guide).

You can also connect effects units to your sys-

tem by using any analog or digital inputs and

outputs as Auxiliary Inputs and Outputs for ef-

fects sends and returns. Once an effects unit is

attached this way, you can send a variable

amount of a track’s output to the effects unit us-

ing a send in Pro Tools.

Ten separate send controls on each Pro Tools

track allow you to route audio to any of the

available outputs connected to your system or

through any of the 128 internal busses in the

Pro Tools Mixer. Outputs can be returned to

Auxiliary Inputs for automated mixing or pro-

cessing.

You can route any of the physical input or

output pairs to any of the input and output

channel assignments in the Pro Tools

mixer. (The 96i I/O does not support input

mapping, however.) For more information

see the Pro Tools Reference Guide.

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