Specifications

Chapter 2: Expanded Pro Tools|HD Systems
9
Expanded Systems Guide
To connect Legacy audio interfaces:
1 Connect one end of a Pro Tools|24 MIX peripheral cable to the Legacy port on a 192 I/O, 192 Digital I/O, or
96 I/O.
2 Connect the other end of the cable to your MIX-compatible audio interface.
3 Connect the External Clock Out of the primary interface to the Slave Clock In of the Legacy audio interface
using a BNC cable.
4 If connecting two Legacy peripherals, connect the Slave Clock Out of the first Legacy peripheral to the Slave
Clock In of the second Legacy peripheral.
Identifying Audio Interfaces
If you have multiple audio interfaces of the same type connected to your system, you can confirm the identity
of each interface. This ensures that you choose the appropriate interface in the Peripherals list when you de-
fine its inputs and outputs in the Hardware Setup dialog.
To identify audio interfaces in your system:
1 Choose Setup > Hardware.
2 From the Peripherals list, select an audio interface connected to your system.
3 Click Main.
4 Select the Identify option, located in the lower left corner of the Hardware Setup dialog. This illuminates all
the LEDs on the front panel of the selected 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.
Number of I/O Channels in Expanded Systems
You can add audio interfaces to your system to increase the number of available channels of hardware input
and output. Hardware input and output includes digital and analog connections.
Number of Channels of I/O
Pro Tools|HD audio interfaces provide varying numbers of hardware input and output connectors and ports,
a certain number of which can be utilized simultaneously.
Do not connect the Slave Clock Out of the last Legacy peripheral to the clock input on any Pro Tools|HD
interface.
If using an 888|24 I/O, do not power on the 888|24 until you are ready to declare it in the Hardware Setup
dialog, after launching Pro Tools. See the Pro Tools|HD Getting Started Guide for more information.
For specifications of Pro Tools|HD I/Os, refer to the Pro Tools|HD Getting Started Guide.