Roland M-480 - REAC Applications and Settings; REAC Applications

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REAC applications and settings
REAC applications and settings
REAC applications
This chapter explains more advanced ways to use REAC.
For basic information about REAC, refer to “Basic knowledge
about REAC” (p. 13).
By connecting a REAC splitter between the REAC master and
slave, you can split the output from the REAC master device and
distribute it to multiple REAC split devices.
fig.REACsplit.eps
To assign a REAC device to operate in split mode, you must set its
REAC mode to Split. The REAC split device will function solely to
receive signals from the REAC master device.
Caution when using a REAC splitter
For a REAC splitter, you can use the S-4000D or an Ethernet
switching hub. Switching hubs that meet the following
conditions can be used with the M-480:
• 1000BASE-T compatible device (IEEE 802.3ab, Gigabit
Ethernet) that supports 100 BASE-TX (IEEE 802.3u, Fast
Ethernet)
• Full duplex communication (simultaneous bidirectional
communication)
The network transmission time between REAC devices is
approximately 375 microseconds, but if the signal passes
through a REAC splitter (S-4000D or an Ethernet switching hub),
approximately 200 microseconds of delay will occur for each
device. A maximum of four REAC splitters can be connected in
series.
fig.REACPortGuide.eps
REAC A port
The REAC A port belongs to the REAC A system. The REAC A port
operate as the REAC master or the REAC slave.
SPLIT/BACKUP port
From the SPLIT/BACKUP port, you can take the same output as
the REAC A port, or create a redundant REAC connection
between the M-480 and an S-4000S (p. 143).
The output of REAC A port and SPLIT/BACKUP
port
The forty channels from the output patchbay are output to the
REAC A port and SPLIT/BACKUP port.
fig.ReacAOuts.eps
When the M-480’s REAC is set to MONITOR/BROADCAST (p. 144),
the REAC A port operates as the REAC split. In this case, the M-480
cannot output signals to the REAC A and SPLIT/BACKUP.
REAC B port
The REAC B port belongs to the REAC B system, which is separate
from the REAC A port. The REAC B port always operates as the
REAC master.
REAC B port output
The forty channels from the output patchbay are output to the
REAC B port.
fig.ReacBOuts.eps
REAC splitting
About the M-480’s REAC functionality
SPLIT SPLIT SPLIT
REAC SPLITTER
MASTER
SLAVE
1
9
40
8
OUTPUT
40ch
PATCHBAY
REAC A OUT
SPLIT/BACKUP OUT
REAC B OUT
1
9
40
8
OUTPUT
40ch
PATCHBAY
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