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Introduction
About the ADAT AI4
Anyone who's ever tried to interconnect of digital gear will tell you that
digital connections aren't as simple as plugging two jacks together. Like
people speaking different languages, various digital formats cannot talk to
one another without some form of translation. The AI4 can convert up
to eight channels of AES/EBU format signal to Alesis ADAT Optical
format (and vice versa). Because these are two of the most popular
formats in digital audio, the AI4 will let you interface a wide range of
gear.
Important Features of your AI4
Sample Rates of up to 96kHz
In case you haven't noticed, sample rates are like the price of baseball
tickets—they keep going higher. This is good news if your main interest
is sound quality (and bad news if you like to sit behind the first base
dugout). The AI4 can keep up with the emerging professional standard
of 96 kHz, while maintaining compatibility with the still popular rates of
44.1 kHz, 48 kHz—and everything in between.
AES/EBU Ins and Outs
The AI4 sports four XLR AES/EBU inputs and four XLR AES/EBU
outputs; each carries a stereo signal. You can transmit/receive up to eight
simultaneous channels at any sample rate between 44.1 kHz and 96 kHz.
Optical Interface
The ADAT optical interface includes a pair of TOSLINK-style
transmitters and two TOSLINK-style receivers. By dividing the
connections into pairs, we're able to support eight channels of 24-bit
audio at sample rates of up to 96 kHz.
BNC Word Clock Input
The AI4 can sync up to a wide range of professional digital gear via
industry standard Word Clock input. The AI4 can accept Word Clock of
any frequency between 23kHz and 105kHz.
Independent Clocking Capabilities
The AI4's AES-to-Optical and Optical-to-AES data paths have
independent clocking capabilities. This allows the AI4 to act as two
independent interfaces in one unit, routing separate and asynchronous
signals through each data stream.
Front Panel Clock Selection
The AI4 gives you front panel access to clock selection. Front panel
LEDs indicate the current clock source, eliminating any confusion as to
which devices are clock master and slaves in your studio.
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