Specifications

Pro Tools Reference Guide64
4 Do one of the following depending on your
Pro Tools system:
• For Avid HDX, Pro Tools|HD, and HD Native
systems, turn off your Pro Tools audio inter-
faces.
• For Pro Tools systems that use hardware requir-
ing external power (such as 003), turn off the
hardware.
5 For systems with an expansion chassis, turn off
the chassis.
6 Turn off any MIDI interfaces, MIDI devices, or
synchronization peripherals.
7 Turn off any worksurfaces (such as
D-Command) or control surfaces (such as
Command|8).
8 Turn off any external hard drives.
Checking an Avid HDX,
Pro Tools|HD, or HD Native
System with DigiTest
Before you use Pro Tools, you may want to run the
DigiTest diagnostic application to ensure that all
Avid HDX or Pro Tools|HD cards in the system
are recognized, installed in the proper order, and
have valid TDM connections. You can also use
DigiTest to validate your HD Native PCIe card or
Thunderbolt interface. See the Avid DigiTest
Guide for more information.
Configuring Pro Tools System
Settings
Pro Tools lets you adjust the performance of your
system by changing system settings that affect its
capacity for processing, playback, and recording.
These system settings are available in the Playback
Engine (
Setup > Playback Engine).
In most cases, the default settings for your
system provide optimum performance, but you
may want to adjust them to accommodate large or
processing-intensive Pro Tools sessions.
Playback Engine for a Pro Tools HD system with HDX
hardware acceleration