User Guide

Chapter 2: Macintosh Configuration 11
After Pro Tools launches, the Channel Scribble
Strips on the Digi 002 unit display the message,
“Open or create a new session,” and only the
Pro Tools menus will appear on the computer
screen.
To see the Pro Tools Edit and Mix windows, a
new session must be created. Before you begin
working with Pro Tools, refer to the next section
to get acquainted with Pro Tools system set-
tings.
Updating Digi 002 Firmware
The Digi 002 has three types of firmware: Boot
Firmware, System Firmware, and Fader Firm-
ware. The second and third types, System and
Fader firmware, can be updated automatically
When you launch Pro Tools software, it auto-
matically checks the version of the unit’s firm-
ware, and prompts you to update it if newer ver-
sions are available.
If you choose to update your unit’s firmware, be
sure to allow the update to complete before dis-
connecting or turning off your system.
When the download and reprogramming pro-
cess is complete, you may get a message that
Pro Tools cannot communicate with Digi 002.
In this case, wait up to 30 seconds; if the mes-
sage does not go away, disconnect and then re-
connect Digi 002 and click OK.
Configuring Pro Tools
Configuring the Playback Engine
The Playback Engine lets you customize various
System Usage parameters (such as Hardware
Buffer Size and CPU Usage) and set the size of
the DAE Playback Buffer.
In most cases, the default settings for your sys-
tem provide optimum performance, but you
may want to adjust them to accommodate large
or processing-intensive Pro Tools sessions.
To configure Playback Engine settings:
1 Choose Setups > Playback Engine.
2 From the H/W Buffer Size pop-up, select the
audio buffer size, in samples, for host processing
tasks such as Real-Time AudioSuite (RTAS)
plug-in processing. The default setting is 512
samples. Select a higher setting if you need more
buffer time for processing audio and applying
real-time effects. (H/W Buffer size has an effect
on monitoring of audio in Pro Tools; see “Mon-
itoring Latency and Recording” on page 68 for
details.)
3 From the CPU Usage Limit pop-up, select the
maximum percentage of CPU resources to allo-
cate to host processing tasks. The default setting
is 65%. Select a higher setting if you need more
host processing power for RTAS applications.
4 Set the DAE Playback Buffer Size. (See “DAE
Playback Buffer Size” on page 12.) Memory re-
quirements for each setting are shown at the
bottom of the Playback Engine dialog box.
5 Click OK when you are finished.
Playback Engine dialog for Digi 002
Increasing the CPU Usage Limit may slow
down screen response.