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CLOCK SOURCE
SELECT
Once you've got the AI4 safely mounted, it's time to cable in the rest of your
gear. All connections are located on the back panel and fall into three
categories:
AES/EBU
AES/EBU is a standard digital connection used in many professional audio
applications. Each AES/EBU line carries two channels of audio.
You'll find AES/EBU connectors on outboard analog-to-digital converters,
digital mixers, DAT and CD recorders, and other
devices.
ADAT Optical
Also known in the industry as "Lightpipe," ADAT optical is the most popular
multichannel digital audio interface in the world. In addition to support by all
of Alesis' multitrack recorders, ADAT optical is widely supported by digital
mixers, computer audio interfaces, third-party multitrack recorders, and even
synthesizers and samplers.
Word Clock
Word Clock has been described as a sort of digital "metronome" that can
control sample timing. Although digital clock is transmitted over such
connections as AES/EBU and ADAT Optical, some situations call for one
central and stable clock. For example, if you're interconnecting more than two
devices, you can use Word Clock as a central master to ensure that all of the
connected units are receiving the same clock information at the same time.
Inputs
AES Input Channels
AES Input Channels
ADAT Optical Input Channels
ADAT Optical Input
Word Clock
SERVICE MANUAL
1/2
3/4
5/6
7/8
WCLK
44.1K
high-end digital audio
8
4 XLR Connectors
8
2 TOSLINK Optical Connectors
1 75Ω BNC Connector
CLOCK SOURCE
SAMPLE RATE
SELECT
48.0K
88.2K
96.0K
OPTICAL
Outputs
AES Output Channels
AES Output Channels
ADAT Output Channels
ADAT Optical Output
Resolution
Bit Depth
Sample Rates (normal)
Sample Rates (High Resolution)
Mechanical
Size
Rack Spaces
Weight
Power Consumption
MODEL:AI - 4
SAMPLE RATE
WCLK IN
44.1K
48.0K
88.2K
96.0K
8
4 XLR Connectors
8
2 TOSLINK Optical Connectors
Up to 24-bit (source dependent)
32kHz-52kHz (source dependent)
52kHz-105kHz (source dependent)
1.75"H x 19.0"W x 5.8"D (45mm H x
483mm W x 147mm D)
1 Space
3lb 15oz (1.8kg)
10 Watts max (100-230VAC/50-60Hz)
5 Watts max in standby mode
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