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Overview: |
The ADI-642, an 8-channel format converter from MADI to AES and vice versa, is the latest addition to RMEs successful MADI series. Amongst other applications, the unit can serve as ideal AES/EBU frontend for the Hammerfall DSP MADI PCI card. Up to 192 kHz at 24-Bit are supported. Its most outstanding feature is an easy-to-use 72 x 74 routing matrix, which can assign an individual input channel to every single output channel, allowing free configuration of all 64 MADI channels and the 8 AES channels. Additional features include:
- direct support for MADI Double and Quad Wire
- Automatic Delay Compensation when using more than one unit
- Analog stereo monitor output, up to 192 kHz
- Detailed status display for MADI and AES
- Completely remote controlable via MIDI
- Transfer of MIDI data via MADI
- SteadyClock for maximum jitter reduction and clock regeneration
The compact unit with 19" width and 1 unit height serves as format converter MADI to/from AES (Schematic View). MADI handles 64 channels of 24-Bit audio at sampling frequencies up to 48kHz, 32 channels up to 96kHz, and 16 channels up to 192kHz. All channels are transferred across a single cable, either coaxial (BNC) or optical network cable. In both cases, cable lengths of more than 100 meters can be achieved. The AES/EBU channels are provided via 4 XLR inputs and outputs, respectively. The ADI-642 accepts 56 channels and 64 channels as well as 96k frame at its input, and can be set to generate those formats at its output. This way the ADI-642 even serves as perfect interface between otherwise incompatible MADI devices.
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Connectivity |
- 1 x MADI I/O (optical and coaxial)
- 4 x AES/EBU I/O
- 1 x MIDI I/O
- Word Clock I/O
- RME Remote
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Features: |
A fully automatic
input selection
between optical and
coaxial input offers
a useful redundancy
mode for critical
applications.
Extensive status
displays give
information about
Lock and Sync
states, audio
content and the
physical quality of
the incoming signal.
The ADI-642
supplies word clock
in Single, Double
und Quad Speed,
distributes Double
Wire 96kHz signals
into the MADI data
stream and to the
AES ports, and even
supports the double
MADI sample rate
(96K frame). The
SyncAlign
technologies known
from other RME
products ensure
perfect
synchronization and
clear detection of
errors. Also
multiple units can
be stacked and
operated
sample-aligned,
using word clock.
All settings are
stored when the unit
is switched off.
Additionally the
ADI-642 features
an easy-to-use 72 x
74 Matrix Router. An
input signal can be
assigned to every
output channel, both
for AES and MADI.
This not only allows
free signal routing
during format
conversion, but also
forwarding and
routing of signals
within the same
format. An input
signal can also be
distributed to any
number of outputs.
With more than one
ADI-642,
several MADI signals
can be combined
(merged) to one MADI
stream.
16 MIDI channels can
be transferred
across MADI (even
with 64 audio
channels). The
device can be fully
remote controlled
and configured via
MIDI, and all status
displays can be
queried through
MIDI. Each ADI-642
can be given a
separate ID,
allowing separate
remote
controllability of
various devices with
only one MIDI
channel.
Application examples
include:
-
AES/EBU frontend
for RME's HDSP
MADI
-
AES/EBU breakout
box for any MADI
device
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Digital
Multicore,
allowing signal
transfer across
long distances
with a single
cable
-
MADI
coaxial/optical
or vice versa
converter
-
MADI
redistributor,
patchbay and
router
-
AES/MADI
inserter
-
Madi Merger
RMEs SteadyClock(TM)
lets the ADI-642 use
MADI without an
additional word
clock connection,
and guarantees
excellent clock
quality in every
situation. Due to
the highly efficient
jitter reduction,
any clock signal
(even AES and Word
Clock) can be
improved and
refreshed, and
subsequently be used
as reference clock
at the word clock
output.
Intelligent Clock
Control will
retain the last
valid sample
frequency in case of
a loss of the input
signal.
The analog monitor
output operates in
stereo and has a low
impedance. It can be
used as line and
headphone output and
supports 192 kHz at
112 dBA SNR. The
routing matrix can
assign any of the 36
stereo input pairs
to the monitor
output.
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Auto Delay Compensation: |
A typical application example is the
use of a HDSP MADI PCI-card
in a computer with the ADI-642 as
external AES interface. (schematic
view) As MADI transmits 64 channels,
up to eight ADI-642 can be used to
provide all 64 channels via 32 AES
I/Os. The integrated Matrix Router
makes such a setup easy to be
configured. The MADI signal is
passed through from device to
device. When passing through the
MADI signal, a delay of a few
samples per ADI-642 occurs, causing
the AES inputs and outputs to show
an offset. This problem is fixed by
the Automatic Delay Compensation.
Each ADI-642 automatically
detects which unit it is within the
chain, and corrects the AES input
and output data so that all AES I/Os
operate sample-aligned. The
additional Auto Configuration mode
sets up all ADI-642 to use
consecutive AES I/Os. A manual
configuration via each unit's Matrix
is not required.
The ADI-642 is compatible to
MADI interfaces of companies like
Sony, Merging, Lawo, Euphonix,
Stagetec, Jünger, Audio Service, AMS
and others.
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Tech Specs: |
Input MADI: 1 x BNC, 1 x opticalOutput MADI: 1 x BNC, 1 x optical
Input AES/EBU: 4 x XLR, electrically isolated, highly sensitive input stage (< 0.3 Vpp), SPDIF compatible
Output AES/EBU: 4 x XLR, transformer balanced, 5 Vpp
Input word clock: BNC, Signal Adaptation Circuit (functional from 1.2 Vpp)
Output word clock: BNC, low impedance driver stage, 4 Vpp into 75 Ohms, short-circuit-proof
MIDI input and output: via two 5-pin DIN jacks
Sync sources: MADI, AES, word clock, internal
Varipitch: by input signal or word clock
Sample frequencies: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz, variable (sync/word clock)
Sample rate range: MADI: 32 - 192 kHz, word clock: 27 kHz - 200 kHz, AES: 28 kHz - 200 kHz
Jitter: Internal clock < 1 ns, external clocks < 1 ns
Jitter suppression: >30 dB (2.4 kHz)
Jitter sensitivity: all PLLs operate error-free even at 100 ns
Power supply: Internal switching mode PS, 100V - 240V AC, 20 Watt
Warranty: 2 years
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