Reac Applications And Settings; Reac Applications - RSS M-380 Owner's Manual

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. 14).
REAC splitting
By connecting a REAC splitter between the REAC master and slave,
you can split the output from the master REAC device and distribute
it to multiple split REAC devices.
fig.REACsplit.eps
SPLIT SPLIT SPLIT
REAC SPLITTER
To assign a REAC device to operate in split mode, you must set its REAC
mode to Split. The split REAC device will function solely to receive
signals from the master REAC device.
Caution when using a REAC splitter
For a REAC splitter, you can use either the S-4000-SP or an Ethernet
switching hub. Switching hubs that meet the following conditions
can be used with the M-380.
• 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-4000-SP 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.
About the M-380's REAC functionality
fig.REACSystem.eps
REAC A SYSTEM
SPLIT REAC A
/BACKUP
REAC A port, SPLIT/BACKUP port
The REAC A port and SPLIT/BACKUP port belong to the same
REAC A system. From the SPLIT/BACKUP port, you can take the
same output as the REAC A port, or create a redundant REAC
SLAVE
MASTER
REAC B SYSTEM
REAC B
connection between the M-380 and an S-4000S (p. 158). If you
connect an input/output unit to these ports, please observe the
following points.
• You cannot connect multiple master REAC devices or multiple
slave REAC devices to a single REAC system. For example, you
cannot connect a slave REAC device to both the REAC A port
and the SPLIT/BACKUP port.
• When receiving input from a REAC device connected to the
SPLIT/BACKUP port, it will be treated as input from REAC A.
• The same forty channels will be output from the M-380 to the
REAC A port and to the SPLIT/BACKUP port.
The output of REAC A port and SPLIT/BACKUP
port
If the M-380's REAC setting is FOH or BACKUP(p. 162), the output
to REAC A and the output to SPLIT/BACKUP will include the
following signals.
a. 8 channels of output from the output patchbay to REAC A
b. The inputs from the input/output unit connected to REAC A
c. The inputs from the input/output unit connected to REAC B
These will be assigned to the REAC A output in the order of "a," "b,"
and "c," up to maximum total of 40 channels.
fig.ReacAOuts.eps
(a) OUTPUT PATCHBAY
8ch
1
8
(b) REAC A INPUT
9
(c) REAC B INPUT
40ch
40
fig.REACsplit2.eps
BROADCAST BROADCAST MONITOR
CONSOLE 2 CONSOLE 1 CONSOLE
SPLIT SPLIT SPLIT
REAC SPLITTER REAC SPLITTER
SPLIT
/BACKUP
FOH CONSOLE
REAC A OUT
SPLIT/BACKUP OUT
S-1608(A) S-1608(B)
SLAVE SLAVE
REAC A REAC B
MASTER MASTER
157