RME Audio ADI-192 DD, Руководство пользователя

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User's Guide ADI-192 DD © RME
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4.3 The DD plain and simple
The user interface of the ADI-192 DD is characterized by a clearly structured architecture and
an unambiguous labelling of the front and rear sides. Numerous LEDs show the state of the
device and of all incoming and outgoing signals in a strictly logical way.
A simplified block diagram of the ADI-192 DD shows in an easy to understand way, how the
different format converters work together and how they can be used in practice.
The three input formats AES/SPDIF, ADAT and TDIF on the left side are sent to three
Output
Source selectors each. Using these selectors, the three outputs on the right side gain access to
any of the three inputs. As all three selectors operate independently, all three outputs can even
use the same input signal, so AES is converted to AES, TDIF and ADAT at the same time – just
an example. Any combination that one can imagine is allowed.
The big block diagram also printed on the unit's cover (see chapter 12) shows further details,
like the AES input jacks, Double Speed and Quad Speed conversion, and the clock control.
The big block diagram especially shows the way of operation of the ADI-192 DD's 8-channel
sample rate converter. The SRC has a choice of access to the input formats AES/SPDIF, ADAT
or TDIF. It is not possible to use the SRC with more than one format at a time. The SRC proc-
esses either AES/SPDIF, ADAT or TDIF. But the SRC's output signal is available at the
AES/SPDIF, ADAT and TDIF outputs simultaneously.
The unit's user surface includes a smart improvement not being shown in the block diagram.
When an OUTPUT is set to the same SOURCE that is selected as SOURCE of the SRC, the
OUTPUT SOURCE automatically changes to SRC. The fourth choice shown in the block dia-
gram, the SRC bus, is selected from the device itself, and not selectable via the OUTPUT but-
ton.