Specifications
Chapter 3: Installation Overview
13
Powering Up Your System
In order for Pro Tools to communicate properly 
with audio interfaces and other peripherals, it is 
important that you start up and shut down your 
system in the following order:
Power up your system in this order:
1 
Turn on your Pro Tools hard drives.
2 
Turn on synchronization or other MIDI pe-
ripherals or interfaces.
3 
Turn on your 192 I/O and any other Pro Tools 
audio interfaces. On power up, the status LEDs 
will flash. Wait at least fifteen seconds for the 
192 I/O to initialize, and the status LEDs to stop 
blinking and stay lit on any and all audio inter-
faces. If properly connected, the ring around the 
power switch will be orange while the computer 
is powered down.
4 
Turn on your computer. When the computer 
boots, all power LED rings on HD I/O should 
switch to green. This signifies that the HD I/Os 
are properly connected to HD cards or other HD 
I/Os in your system.
MIX-series audio interfaces will not be available 
until they have been made active in the Hard-
ware Setup dialog. See the 
Getting Started with 
HD
 Guide for info.
Power down your system in this order:
1 Quit Pro Tools.
2 Shut down the computer.
3 Power off your audio interfaces.
4 Turn off any synchronization, MIDI, or other 
peripherals or interfaces.
5 Turn off your drives. 
Making Signal Connections to 
the 192 I/O
Depending on how you plan to use the 192 I/O, 
the way you connect it to your studio will vary.
Setting Up Your Studio
The following diagrams provide general sugges-
tions for connecting studio gear to your system. 
Figure 1 on page 14 illustrates a studio setup 
with the 192 I/O connected to a mixing console, 
with effects and other gear routed into the con-
sole as well. 
Figure 2 on page 15 diagram shows a setup with-
out a mixer, where effects and monitoring gear 
are connected directly to the 192 I/O. 










