Yamaha MRX7-D Owner's Manual page 12

Controls and Connectors
o [YDIF] connectors
These connectors are used to make a ring connection with
the devices that comprise the MTX/MRX system, allowing
digital audio signals to be transmitted and received. Use
CAT5e or better Ethernet STP cables (shielded twisted pair
cables) that have all eight pins connected in a straight con-
nection. The maximum cable length between devices is 30
meters, and you can connect up to eight devices that are
equipped with the [YDIF] connectors. For details, refer to
the MTX-MRX Editor User's Manual.
NOTE
Using a Mini-YGDAI card for an external word clock may
cause noise in system configurations with multiple YDIF
connections. In such cases, we recommend using a differ-
ent word clock source, such as Dante or YDIF.
!0 POWER IN +24V DC
Support for this connector is planned for the future.
!1 Dante [PRIMARY]/[SECONDARY] connectors
This is an RJ45 connector used to connect the unit to a com-
puter or a Dante device such as the XMV4280-D via an
Ethernet cable (CAT5e or better is recommended).
If DIP switch 4 on the rear panel is set upward (to DAISY
CHAIN), audio signals coming into one of these connectors
will be output from the other. Refer to "Daisy chain net-
work" in the "About connections" section (see page 15) for
more information on daisy chain connections.
If DIP switch 4 on the rear panel is set downward (to
REDUNDANT), the Dante [PRIMARY] connector will be
used for primary connection, and the Dante [SECONDARY]
connector will be used for secondary (backup) connection. If
the unit is unable to transmit signals through the Dante [PRI-
MARY] connector for some reason (e.g., due to damage or
accidental removal of the cable, or a failed network switch),
the Dante [SECONDARY] connector will automatically take
over the connection. Refer to "About redundant networks" in
the "About connections" section (see page 16) for more
information on redundant networks.
The connected computer is used mainly with the dedicated
"MTX-MRX Editor" application program for the purpose of
setting up or controlling the MTX/MRX system.
NOTE
• Since Dante-compatible equipment made by Yamaha
such as the MRX7-D contains a built-in network switch,
the number of hops will be two or more. For this reason,
the 0.15 msec Latency setting in Dante Controller will be
grayed-out and unavailable.
• Use STP (shielded twisted pair) cable to prevent electro-
magnetic interference.
!2 [ST IN] connectors
These are unbalanced RCA phono jacks for inputting analog
audio signals from a CD player or other device.
!3 SLOT
This slot allows a separately sold Mini-YGDAI card to be
installed.
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MRX7-D Owner's Manual
!4 [INPUT]/[OUTPUT] connectors
These are balanced input/output connectors for analog audio
input and output. Connect line level devices or microphones
to the [INPUT] connectors, and line level devices to the
[OUTPUT] connectors. The [INPUT] connectors provide
head amps, and can also provide +48V phantom power.
MRX Designer is used to specify the gain of the internal
head amps and to turn the phantom power on/off.
Use the included Euroblock plugs to make connections (see
"Euroblock plug connection" on page 13 for details).
NOTE
Adjusting the internal head amp gain between +17 dB and
+18 dB will internally turn PAD on/off. Noise may occur if
there is an impedance difference between the Hot and Cold
of a device connected to the [INPUT] connectors while
phantom power is being used.