Technical data
19
Why a Clock Reference for
bidirectional Conversion
without SRC?
To allow for the bidirectional format con-
version between AES3 and AES3id without
SRC, the MC-6 needs to derive valid clock
signals from the incoming audio sources.
Therefore, the corresponding reference
option is activated in the »REFERENCE«
menu automatically. This selection can not
be changed.
!
This setting is a special function of your MC-6! It allows to receive an AES3
signal and an AES3id signal simultaneously. The AES3 input signal is conver-
ted to AES3id and the AES3id input signal is converted to AES3. The other
digital audio outputs are shut down.
In this mode, the MC-6 is able to work simultaneously with two different
sampling rates. Therefore, the system uses two PLL synthesizers to lock the
incoming AES3 and AES3id signals with their individual clock rates. The
status of the PLLs is displayed in the »STATUS« and »REF CLOCK
IN« menus.
To distinguish between the two PLL states, you can see that generally the
»LOCK« and »AUDIO« conditions of the first audio input format, seen from
above of the LED row »AUDIO IN«, are displayed using the first »LOCK« and
first »AUDIO« LED of the »STATUS« LED row. The status of the second audio
input format is displayed accordingly with the second LEDs of this menu.
To make this more clear, the MC-6 front view below shows the assignment
of the LEDs in »STATUS« and »REF COCK
IN« with their numbering aligned
their affiliation to the selected two digital audio formats, »AES3« (marked
as »1«) and »AES3id« (marked as »2«).
Bidirectional Format Conversion between
AES3 and S/P-DIF optical
AES3
S/P-DIF op
REFERENCE
88.2
48.0
44.1
32.0
192.0
96.0
176.4
2
1
AES3id
S/P-DIF co
AUDIO
IN
AES11
WCLK AES3
S/P-DIF op
AES3id
S/P-DIF co
2
2
1
LOCK
AUDIO
LOCK
AUDIO
1
1
1
2
2
2
88.2
48.0
44.1
32.0
192.0
96.0
176.4
STATUS REF CLOCK IN
11 2
X-SRC
BI-DIR
UNI-DIR AES3
S/P-DIF op SRC
REFERENCE
88.2
48.0
44.1
32.0
192.0
96.0
176.4
MODE
AES3id
S/P-DIF co
AUDIO
IN
AES11
WCLK AES3
S/P-DIF op
AES3id
S/P-DIF co
This setting allows to receive an AES3 signal and a S/P-DIF optical signal
simultaneously for bidirectional format conversion. The procedure is the
same as described above. The sampling rates of the incoming audio signals
are displayed in the »REF CLOCK
IN
« menus.
Bidirectional Format Conversion between
AES3 and S/P-DIF coaxial
X-SRC
BI-DIR
UNI-DIR AES3
S/P-DIF op SRC
REFERENCE
88.2
48.0
44.1
32.0
192.0
96.0
176.4
MODE
AES3id
S/P-DIF co
AUDIO
IN
AES11
WCLK AES3
S/P-DIF op
AES3id
S/P-DIF co
This setting allows to receive an AES3 signal and a S/P-DIF coaxial signal
simultaneously for bidirectional format conversion. The procedure is the
same as described above. The sampling rates of the incoming audio signals
are displayed in the »REF CLOCK
IN
« menus.
X-SRC
BI-DIR
UNI-DIR AES3
S/P-DIF op SRC
REFERENCE
88.2
48.0
44.1
32.0
192.0
96.0
176.4
MODE
AES3id
S/P-DIF co
AUDIO
IN
AES11
WCLK AES3
S/P-DIF op
AES3id
S/P-DIF co
Bidirectional Format Conversion between
AES3 and AES3id