User Manual

Chapter 2: HD I/O Overview 5
chapter 2
HD I/O Overview
This chapter describes the front and back panel features of the HD I/O.
HD I/O Front Panel
Power Switch and LED Ring
This button turns the HD I/O on and off.
The LED ring around the power button will light
green to indicate that the unit has powered up
successfully and is connected to an active
Pro Tools|HD system. If the LED ring is orange,
the unit has power, but the computer it is con-
nected to is shut down.
Sample Rate
These LEDs display the current sample rate of
the HD I/O internal clock: 44.1 kHz, 48 kHz,
88.2 kHz, 96 kHz, 176.4 kHz, or 192 kHz. The
sample rate can be set in Pro Tools when you
create a new session, or in the Hardware Setup or
Playback Engine dialogs if no session is open.
See the Pro Tools|HD User Guide for complete system installation and configuration instructions. If you
are adding the HD I/O to an existing system, see the
Expanded Systems Guide.
HD I/O Front Panel