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Chapter 4: Using the ADAT Bridge I/O in Standalone Mode 31

chapter 4

Using the ADAT Bridge I/O in Standalone

Mode

In addition to its role as a bridge between

Pro Tools and ADAT, the ADAT Bridge I/O

can also be used on its own as a stand-alone

S/PDIF or AES/EBU-to-ADAT-optical con-

verter. This capability allows you to digi-

tally transfer audio from DAT or a digital

I/O-equipped CD player or digital mixing

console to ADAT without having to power

on your computer or launch Pro Tools.

Audio received over the ADAT Bridge I/O’s

digital ports can be monitored with 24-bit

fidelity through its analog outputs. These

outputs default to –10 dBV operating levels

when the ADAT Bridge I/O is used in stand-

alone mode.

ADAT Channels Transferred

In standalone mode, only channels 1–2 of

the ADAT format inputs are transferred to

AES/EBU or S/PDIF Outputs. All other

ADAT channels are ignored.

Using Standalone Mode

To use the ADAT Bridge I/O in standalone

mode:

1 Make sure that your computer is off.

2 Connect the digital audio source (the

DAT or digital I/O-equipped CD player) to

the ADAT Bridge I/O.

3 Turn on the digital audio source (the DAT

or digital I/O-equipped CD player).

4 Turn on the ADAT Bridge I/O.

5 The ADAT Bridge I/O will scan both its

S/PDIF and AES/EBU ports for word clock.

Once word clock lock has been achieved,

the ADAT Bridge I/O will switch to digital

sync mode and automatically match its

sample rate to the incoming data. (If the in-

coming word clock is 48 kHz, the 48 kHz

sample rate LED will remain lit. If the in-

coming word clock is 44.1 kHz, the 48 kHz

sample rate LED will ﬂash.) Accordingly,

digital output sent via the ADAT Bridge

I/O’s AES/EBU, S/PDIF, and optical ports

will also match the sample rate of the in-

coming data.

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