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193
Appendix
Appendix
Can’t control the M-300 from an
external device
●
The settings of the external device are incorrect.
●
The external device is not connected correctly.
●
The cable is broken.
●
The RS-232C baud rate is not set correctly.
●
The M-300 is not set to receive messages.
Insufficient volume from a device
connected to the output jacks
●
You’re using a cable that contains a built-in resistor.
Data disappeared from USB memory
●
You switched off the power or disconnected the USB memory
while writing or reading USB memory.
Settings don’t change when you recall
a scene
●
The recall is being filtered by the RECALL PARAMETER and
GLOBAL SCOPE settings.
The REAC A port and REAC B port provide a REAC indicator that
shows the REAC communications status.
The following table shows the meaning of the REAC indicator
status:
If REAC connection is unsuccessful, check the following points:
• Make sure that all REAC devices are powered on.
• Check the Cat5e cable connections.
• Make sure that the Cat5e cables are not damaged.
•
Verify that you’re using the appropriate type of cables. (See
“About cables” (p. 13))
• If you’re using a switching hub, is it operating?
• If you’re using a switching hub, is it connected correctly?
•
If you’re using a switching hub, does it have the correct
specifications? (See “Requirements for switching hubs” (p. 194))
Cat5e crossover cables
(REAC cables SC-W100S)
fig.PinCat5eCross.eps
INPUT and OUTPUT
Balanced connections are recommended.
If you use unbalanced connections, connect the cold and ground.
•
Balanced connection
fig.XLRJack.eps
• Unbalanced connection
fig.XLRJack2.eps
INPUT jacks provide phantom power (+48V/14mA).
Other
REAC indicator
Status
Meaning
Lit
REAC communication is established
Blinking REAC communication is taking place
Unlit No communication
Pin configuration diagrams
Cat5e Ethernet cables
(RJ45 EtherCon type connectors)
Audio jacks (XLR)
TX+
TX-
RX+
RX-
TX+
TX-
RX+
RX-
GND
COLD
HOT
GNDHOT
M-300_e.book 193 ページ ２０１０年６月２４日 木曜日 午後２時２６分