Apogee X-Digi-Mix Card Manuel de l'utilisateur - Page 9

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Configuring Digidesign Pro Tools

Before your X-Digi-Mix-equipped Apogee interface will send and receive signals from Digidesign Pro

Tools software, certain hardware settings must be made in the software.

1) Before modifying hardware settings in Pro Tools, we recommend that the "DigiSetup" Preference

file be deleted to the Trash, the Trash emptied, and the computer re-booted.

2) A X-Digi-Mix-equipped Apogee interfaces uses the same Peripheral protocol as a Digidesign 888/

24, thus please consult the instructions found in your Digidesign documentation to configure Pro

Tools software for use with an 888/24.

Working With Pro Tools

For most aspects of operation such as routing, a X-Digi-Mix-equipped Apogee interfaces operates

identically to a Digidesign 888/24. Indeed, Apogee interfaces are recognized and labeled as 888/24s

in Pro Tools software.

Pro Tools software offers a limited number of hardware commands which are supported as fully as

possible by Apogee hardware. A detailed explanation of Pro Tools commands and the parameters

controlled on Apogee hardware is presented below.

Session Sample Rate

Sync Mode Internal

Sync Mode digital

Digital Format

Input Source (Ch 1-2,3-4,5-6,7-8)

Working with High Resolution Digital Audio in Digidesign Mix Systems

Though Digidesign Mix Systems support sample rates up to 48 kHz, it's possible to record and play

back digital audio at sample rates up to 96kHz on a Mix system with a X-Digi-Mix-equipped Apogee

interface. This is accomplished by transmitting data to and from Digidesign hardware in a "double-

wide" format, i.e one channel of 96kHz data is transmitted over 2 lines at 48 kHz. Thus, the Rosetta

800 offers 4 channels of recording and playback at 96kHz. Due to the unique nature of the data

format used, there are a few restrictions:

1) No DSP operations, including mixing, may be performed on the tracks.

2) Stereo tracks should be used, to avoid shifts in timing between the pair of tracks.

3) Cut and paste operations are allowed.

4) Though theoretical objections may arise with regard to the application of fades, many

professionals have added fades to these type of files with no adverse effects.

Pro Tools Command

Apogee Hardware Parameter

Determines SAMPLE RATE of Master Apogee interface

Master interface clocked internally

(i.e. SAMPLE RATE set to Session Sample Rate, EXT LED is off)

Master Interface clocked externally

(i.e SAMPLE RATE = EXT, SYNC to be selected manually)

Ignored – digital input format must be selected manually

Sets input pairs to either Analog or Digital input

X-Digi-Mix – User's Guide

APOGEE ELECTRONICS