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converters. An external reference is also required whenever the converter is operated in the
“Varispeed” mode.
Digital to Digital Processing
The digital audio input jack also serves as the input for all Digital-to-Digital processing
functions.
These functions include; Word Length Reduction, Pro to Consumer and Consumer
to Pro channel-status conversion, SPDIF to AES/EBU and AES/EBU to SPDIF conversion,
SCMS override, and 75 ohm unbalanced to 110 ohm balanced conversion. The D-to-D feature
also allows the AD2402-96 to act as a 1 in 4 out digital distribution amplifier! For processing a
24-bit signal down to 16-bit, as would be the case in mastering a CD or producing a DAT tape,
the user can take the 24-bit signal into the AD2402-96 digital input. Then the user should select
the D-to-D function, and monitor each word length reduction setting to determine which best
complements the recording.
Digital Outputs
Four digital output jacks
provide a unique set of features. Two outputs are 75-Ohm
unbalanced, and two outputs are 110-Ohm balanced. All outputs can operate in either
professional or consumer status formats. All outputs support 16, 20, or 24-bits, but the two
“Aux.” outputs can be set to operate at 24-bits while the “Main” outputs operate at either 16, 20,
or 24-bits. All outputs support stereo operation at sample rates up to 100 kHz on a single digital
cable. In addition, a “Main” and “Aux.” output pair can be used to record “dual-cable” 88.2 or
96 kHz.
88.2 and 96 kHz Operation
88.2 and 96 kHz sample rates
are supported using either a
“Single Cable” interface mode
(also know as “AES3 Multichannel Mode”) or a
“Dual Cable” interface mode
(also known as
“AES3 Single Channel Double Sampling Frequency Mode”).
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