Installation guide

Chapter 6: Checking Your TDM System and Launching Pro Tools 51
9 From the H/W Buffer pop-up, select the audio
buffer size, in samples, for host processing tasks
such as Real-Time AudioSuite (RTAS) plug-in
processing.
Select a minimum of 128 samples. Select larger
buffer sizes for slower computers; for a Power
Macintosh 9600 or a beige G3, the Hardware
Buffer size can be set as high as 1024 samples.
10 From the CPU Usage Limit pop-up, select the
maximum percentage of CPU resources to allo-
cate to host processing tasks.
Select a minimum percentage of 65%. Select
higher CPU usage percentages for slower com-
puters; for a Power Macintosh 9600 or a beige
G3, CPU usage percentage can be set as high as
85%.
11 Click Recalibrate Inputs to recalibrate the an-
alog-to-digital convertors of the audio interface
and remove any DC offset that may have built
up in them. (For an explanation of DC offset, see
the DigiRack Plug-Ins Guide.)
12 Click Other Options for additional configu-
ration options specific to the audio interface.
These include:
◆ Setting the input format (analog or digital) of
each pair of input channels on an 888/24 I/O
◆ Configuring the level sensitivity and peak
hold settings for the output level meters on the
front panel of the 888/24 I/O
◆ Selecting S/PDIF compatibility with Tascam
DA30 DAT recorders
◆ Enabling or disabling DAC Muting (mutes the
888/24 I/O digital-to-analog convertors when
its output level falls below a certain threshold,
to reduce noise)
◆ Setting the input and output levels of a
1622 I/O
13 Configure the Other Options parameters as
desired and click Done.
14 Click OK to close the Hardware Setup dialog.
15 Choose File > Quit to close Pro Tools.
Installing the Demo Session
Next you will install the demo session included
on the Pro Tools Installer CD.
To install the demo session:
1 Insert the Pro Tools Installer CD in your CD-
ROM drive.
2 Double-click the file “Install Pro Tools Demo
Session.”
3 Select “Pro Tools SoundCheck.” This is the
session used for testing your system. The other
demo sessions demonstrate more capabilities of
Pro Tools. Since they are not used for testing
purposes, installation is optional.
4 Choose a drive on which to install the demo
session.
5 Click Install. When installation is complete,
click OK to return to the Finder.
To record to or from a Tascam® DA30
DAT recorder, you must set S/PDIF compat-
ibility to “Tascam.” To record to or from a
non-Tascam DA30 DAT recorder, set
S/PDIF compatibility to “Other.”
TDM_Install.book Page 51 Saturday, January 13, 2001 9:35 PM