DigiDesign 96i I/O Руководство - Страница 12

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S/PDIF Digital In and Out

These are unbalanced RCA jacks that accept and

output a stereo S/PDIF digital data stream.

S/PDIF supports up to 24-bit audio at up to

96 kHz.

S/PDIF input can be chosen as the input source

for channels 1–2 in the Hardware Setup dialog.

S/PDIF output is mirrored to analog outputs 1–2.

To maintain data integrity and minimize jitter,

use only 75-ohm coaxial cable.

Loop Sync In and Out

Loop Sync is a dedicated Pro Tools clock loop for

synchronizing multiple HD-series interfaces to-

gether. The Loop Sync In and Out ports are stan-

dard BNC connectors that output a 1x Loop

Sync clock signal. Loop Sync should only be

used to chain multiple HD-series peripherals to-

gether.

Loop Sync uses a word clock signal based on

sampling rates of either 44.1 kHz or 48 kHz. As

sample rates increase in the system, Loop Sync

continues to operate at a base rate of 44.1 kHz or

48 kHz (44.1 kHz for 88.2 kHz sessions, 48 kHz

for 96 kHz sessions).

EXT. CLOCK In and Out

The External Clock I/O ports are standard BNC

connectors that receive and output a word clock

signal. These ports can be used to synchronize

the 96i I/O to any device that requires (or pro-

vides) word clock.

96i I/O Guide

The External Clock In and Out are configured in

the Hardware Setup dialog.

Because the Loop Sync and Word Clock ports

pass crucial timing information, you must

use high-quality 75-ohm coaxial cables for

making connections. RG59 or better quality

cable is recommended

Primary Port

The Primary Port is used to connect the 96i I/O

to your HD cards, or to another HD-series audio

interface, using a DigiLink cable. When the

96i I/O is the only audio interface in the system,

the Primary Port is connected directly to the HD

Core card. When 96i I/O is used as an additional

I/O in an expanded Pro Tools|HD system, the

96i I/O Primary Port can be connected to an

HD Accel Card or HD Process Card, or to the Ex-

pansion port on a 192 I/O, 192 Digital I/O, or

96 I/O. (For more information, see Chapter 3,

"Installing and Configuring the 96i.")

Expansion Port

The Expansion Port is used to connect an addi-

tional HD-series I/O to the 96i I/O. Using a Digi-

Link cable (one is included with each HD-series

interface), another 96i I/O can be connected to

the Expansion port for an additional 16 chan-

nels of input to your HD Core card (or other).

AC Power

This connector accepts a standard AC power ca-

ble. The 96i I/O is auto power-selecting (100V to

240V) and will automatically work with a stan-

dard modular cable to connect to AC power re-

ceptacles in any country.