MUTEC MC-4 User Manual

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Manual SDs-01 D 3.2.2003 17:45 Uhr Seite 16

This setting is a special function of your MC-4! It allows to receive an
ADAT

signal with up to 50.0kHz sampling rate and an 8-channel AES3

signal between 25.0kHz and 200.0kHz simultaneously. The ADAT

input

signal is converted to AES3 and the AES3 input signals are converted to
ADAT

or SMUX2/4, depending on the common clock rate of the incoming

AES3 signals. The format of the optical outputs is changed automatically
and displayed in the »STATUS« menu.

In this mode, the MC-4 is able to work simultaneously with two different
sampling rates, each within the above mentioned frequency ranges. There-
fore, the system uses two PLL synthesizers to lock the incoming ADAT

and AES3 signals with their individual clock rates. The status of the PLLs is
displayed in the »STATUS« and »CLOCK

« menus. To distinguish between

the two PLL states, the two blue »LOCK« LEDs and the two raws of red
»CLOCK

« LEDs are marked with small numbers »1« and »2«. The number

»1« indicates the state of the first PLL, which is standardly connected to the
incoming ADAT

audio signal. Number »2« indicates the state of the se-

cond PLL connected to the incoming AES3 signals. To make this more clear,
we have also marked the two involved audio formats with small numbers:
»ADAT

« and »AES3

«.

Necessary Reference Assignment

To allow for bidirectional conversions between ADAT

or SMUX2/4 and

AES3, the MC-4 needs to derive valid clock signals from the incoming audio
sources. Therefore, it is a must to activate one of the AES3 inputs »IN1 – 4«
in the »REFERENCE« menu, the default setting is »IN1«. The reference
»ADAT« or »SMUX2/4« is standardly activated due to the clock rate of the
incoming ADAT

or SMUX signal and can not be changed in this mode.

Further Setting Examples

Bidirectional format conversion between SMUX2 with clock rates from 50.0kHz to 100.0kHz and
an 8-channel AES3 signal. The sampling rates of the incoming audio signals and the format of the
optical SMUX2 outputs are displayed in the »STATUS« and »CLOCK IN« menus.

Equal Clock Rates for AES3!

Due to the fact, that this is a
format conversion mode only, it is

imperative that all AES3 signals are of same
synchronized sampling rates!

The S/P-DIF interfaces do not have any func-
tion in these bidirectional conversion modes,
due to the lack of simultaneous useable
inputs and outputs!

X-SRC

BI-DIR

UNI-DIR

ADAT

SMUX4

SRC

REFERENCE

IN 3

IN 2

IN 1

IN 4

SMUX4

SMUX2

ADAT

AES3

88.2

48.0

44.1

32.0

192.0

96.0

176.4

MODE

SMUX2

AES3

AUDIO

S/P-DIF

AES11

WCLK

X-SRC

BI-DIR

UNI-DIR

ADAT

SMUX4

SRC

REFERENCE

IN 3

IN 2

IN 1

IN 4

SMUX4

SMUX2

ADAT

AES3

88.2

48.0

44.1

32.0

192.0

96.0

176.4

MODE

SMUX2

AES3

AUDIO

S/P-DIF

AES11

WCLK

Bidirectional Format Conversions

ADAT

/ SMUX Adaption

When AES3 signals with sampling
rates up to 50.0kHz coming in, both

optical outputs transmit the same ADAT

signal and function as signal splitter.

Incoming AES3 signals with 50.0kHz to
100.0kHz sampling rates let the optical out-
put format switch to SMUX2.

Sampling rates of 100.0kHz to 200.0kHz of
incoming AES3 signals let the optical output
format change to SMUX4.

The corresponding SMUX format of the opti-
cal outputs is displayed under »STATUS«.

Bidirectional format conversion between SMUX4 with clock rates from 100.0kHz to 200.0kHz and
an 8-channel AES3 signal. The sampling rates of the incoming audio signals and the format of the
optical SMUX4 outputs are displayed in the »STATUS« and »CLOCK IN« menus.

X-SRC

BI-DIR

UNI-DIR

ADAT

SMUX4

SRC

REFERENCE

IN 3

IN 2

IN 1

IN 4

SMUX4

SMUX2

ADAT

AES3

88.2

48.0

44.1

32.0

192.0

96.0

176.4

MODE

SMUX2

AES3

AUDIO

S/P- DIF

S/P-DIF

AES11

WCLK