Technical data

\\\\\\\\\\\\\\\\\\
A N H A N G
A N H A N G
A N H A N G
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
88
Manual SDs-01 D 3.2.2003 17:45 Uhr Seite 16
18
X-SRC
12
BI-DIR
UNI-DIR ADAT
1
SMUX4
1
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
1
AES3
2
AUDIO IN
S/PDIF
S/PDIF
AES11
WCLK
Unidirectional Format with Sampling Rate Conversion from:
ADAT
TM
to AES3, S/PDIF, ADAT
TM
or ADAT
TM
/ SMUX2 + 4
This setting generally allows to receive an ADAT
TM
signal with up to 50.0kHz
sampling rate. The signal‘s audio format will be converted into AES3, S/PDIF
and ADAT
TM
/ SMUX2 /4 simultaneously, as in the previous section described.
Additionally to the format conversion a SRC process is added.
The sampling rate of all outputs now depends on the clock rate of the refe-
rence clock signal, which is selected in the »REFERENCE« menu. The above
example shows Word Clock (»WCLK«) selected as clock reference, which is
the default setting.
In this mode, the following clock references are available for synchronizati-
on of the internal SRCs:
WCLK, 25.0kHz – 200.0kHz, SCLK 11.2896MHz + 12.288MHz
AES11, 25.0kHz – 200.0kHz (through separate input at the rear)
AES3 IN1– 4, every of the AES3 stereo inputs, 25.0kHz – 200.0kHz
32.0kHz –192.0kHz, internal clock oscillator
To activate a clock source enter the »REFERENCE« menu and press the
»SELECT« button repeatedly. When the external clock reference signal can
be locked by the internal PLL circuit, the blue LED »LOCK
1
« in the »STATUS«
menu will light constantly. The clock rate of the selected clock source is
then displayed in the »REF CLOCK IN« menu under »1« accordingly.
Unidirectional Format with Sampling Rate Conversion from:
ADAT
TM
/ SMUX2 to AES3, S/PDIF, ADAT
TM
or ADAT
TM
/ SMUX2 + 4
Does the reference clock signal not
exceed 50.0kHz, both ADAT
TM
out-
puts transmit the same signal and
the MC-4 functions as ADAT
TM
signal splitter.
If the reference clock signal exceeds
50.0kHz, the ADAT
TM
output format will
be automatically changed to »SMUX2«
or »SMUX4«, depending on the reference
signal‘s clock rate. The corresponding SMUX
format of the ADAT
TM
outputs will be dis-
played in the »STATUS« menu.
!
External Clock References
Internal
Clock
Reference
This setting allows to receive an ADAT
TM
/ SMUX2 signal with clock rates bet-
ween 50.0kHz and 100.0kHz. The input signal‘s audio format will be conver
-
ted into AES3, S/PDIF and ADAT
TM
or ADAT
TM
/ SMUX2 /4 and its clock rate is
changed simultaneously to this one of the reference signal‘s clock rate. The
selection of the reference clock signal is the same as described above.
Unidirectional Format with Sampling Rate Conversion from:
ADAT
TM
/ SMUX4 to AES3, S/PDIF, ADAT
TM
or ADAT
TM
/ SMUX2 + 4
X-SRC
12
BI-DIR
UNI-DIR ADAT
1
SMUX4
1
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
1
AES3
2
AUDIO IN
S/PDIF
S/PDIF
AES11
WCLK
This setting allows to receive an ADAT
TM
/ SMUX4 signal with clock rates bet-
ween 100.0kHz and 200.0kHz. The input signal‘s audio format will be conver
-
ted into AES3, S/PDIF and ADAT
TM
or ADAT
TM
/ SMUX2 /4 and its clock rate will
be changed simultaneously to this one of the reference signal‘s clock rate.
The selection of the reference clock signal is the same as described above.
X-SRC
12
BI-DIR
UNI-DIR ADAT
1
SMUX4
1
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
1
AES3
2
AUDIO IN
S/PDIF
S/PDIF
AES11
WCLK
Locking so-called »Super Clocks«
Your MC-4 is able to lock to so-
called »Super Clock« (SCLK) refe
-
rence signals. These clock signals are used
preferably for older digidesign ProTools™
MX systems. Specified are only two clock
rates, 11.2896MHz + 12.288MHz which are
the x256 multiple of the Word Clock rates
44.1kHz and 48.0kHz.
When locking to one of these Super Clocks,
the rate will be inverted displayed in the
»REF CLOCK IN« menu. Due to this, the LED
in front of the corresponding base clock
rate, that means Word Clock rate, does not
light while all other LEDs light (see exam-
ples below).
!
REF CLOCK IN
88.2
48.0
44.1
32.0
192.0
96.0
176.4
1 2
REF CLOCK IN
88.2
48.0
44.1
32.0
192.0
96.0
176.4
1 2
Super Clock of
44.1kHz Word
Clock
Super Clock of
48.0kHz Word
Clock