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Word Clock and Slot settings
M7CL Owner’s Manual
231
Other functions
20
B
Slot number / Card type
This area shows the type of digital I/O card installed in
slots 1–3.
C
CHANNEL
This area shows the channel numbers of the digital I/O
card(s) installed in slots 1–3.
D
FREQUENCY (Clock frequency)
This indicates the clock frequency of the signal being
input to each channel of the digital I/O card, in sets of
two channels.
E
SRC (Sampling Rate Converter)
These buttons are on/off switches (in two groups of
two channels) for the sampling rate converters that
automatically convert an external clock frequency to
match the M7CL. This is available only for slots in
which a digital I/O card with a built-in sampling rate
converter is installed.
F
EMPHASIS STATUS
This indicates whether emphasis is applied to the input
signal, in sets of two channels. This item is only for
display, and cannot be edited. This is available only for
slots in which a digital I/O card is installed.
3
In the MASTER CLOCK SELECT field,
select the desired clock source.
You can choose one of the following clock sources.
●
INT 48 k
●
INT 44.1 k
The M7CL’s internal clock (sampling rate 48 kHz
or 44.1 kHz, respectively) will be the clock source.
Choose one of these if you want to use the M7CL as
the word clock master.
●
WORD CLOCK IN
The word clock supplied from the rear panel
WORD CLOCK IN jack will be used as the clock
source. In this case, the M7CL will operate as a
word clock slave.
●
EtherSound(M7CL-48ES)
The word clock supplied from the EtherSound con-
nector will be used as the clock source. In this case,
the M7CL will operate as a word clock slave. If the
AUTO CONFIGURE button is turned on in the ring
connection, the EtherSound clock source will be
automatically selected.
●
SLOT 1–3
The clock data of the digital audio signal supplied
via a digital I/O card in slot 1–3 (selectable in two-
channel units) will be used as the clock source. In
this case, the M7CL will operate as a word clock
slave.
The status (operating state) of the clock data being
received from each port is indicated by the color of the
symbol displayed immediately above. Each color has
the following significance.
●
LOCK (light blue)
This indicates that a clock synchronized with the
selected source is being input. If an external device
is connected to the corresponding connector or slot,
input/output is occurring normally between that
device and the M7CL. If the sampling frequency is
close, this status may be displayed even if not syn-
chronized.
●
LOCK, BUT NOT SYNC’ED (yellow)
A valid clock is being input, but is not synchronized
with the selected clock source. If an external device
is connected to the corresponding connector, input/
output cannot occur correctly between that device
and the M7CL.
●
SRC ON (green)
This is a special status only for SLOT 1–3, indicat-
ing that the corresponding channel’s SRC (Sam-
pling Rate Converter) is enabled. This means that
even if the signal is not synchronized, normal input/
output with the M7CL is occurring.
●
UNLOCK (red)
A valid clock is not being input. If an external
device is connected to the corresponding connector,
input/output cannot occur correctly between that
device and the M7CL.
●
UNKNOWN (black)
This indicates that the clock status cannot be
detected because no external device is connected or
because there is no valid clock input. You will be
able to select this connector/slot, but successful syn-
chronization cannot occur until a valid connection
is established.
If the symbol for the port selected in step 3 has turned
light blue, and the clock frequency is shown at the
upper left of the MASTER CLOCK SELECT field,
this indicates that the M7CL is operating correctly
with the new clock.
4
To close the WORD CLOCK/SLOT SETUP
popup window, press the “
×
” symbol
located in the upper right.
You will return to the SETUP screen.
5
To close the SETUP screen, press the
SETUP button in the function access area.
• Select EtherSound if the AUTO CONFIGURE button is
turned off under one of the following circumstances:
• The devices are connected in a ring connection.
• The M7CL-48ES is inside a daisy chain.
NOTE
• If you use a digital I/O card that contains a sampling rate con-
verter (MY8-AE96S), input and output can occur normally
with the M7CL even when unsynchronized. In this case, turn
on the SRC button for the slot/channel that is receiving the
signal.
HINT
• If the symbol for the selected clock does not turn light blue,
make sure that the external device is correctly connected,
and that the external device is set to transmit clock data.
• Noise may occur at the output jacks when the word clock set-
ting is changed. In order to protect your speaker system, be
sure to turn down the power amp volume before changing the
word clock setting.
• If you attempt to select a channel whose SRC is on as the
word clock source, a message will appear, warning you that
the sampling rate converter will be disabled.
NOTE