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212
Appendix
Appendix
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).
Switching hubs used to connect REAC devices must meet the
following conditions.
•
We recommend a switching hub that supports 1000BASE-T
(IEEE 802.3ab, Gigabit Ethernet)
•
100BASE-TX interface must be supported (IEEE 802.3u,
Fast Ethernet)
•
Full duplex communication (simultaneous bidirectional
communication) must be supported
Caution when using a switching hub
•
The network propagation time between REAC devices is
approximately 375 microseconds, but if the signal passes
through a switching hub, there will be approximately 200
microseconds of delay for each unit.
•
Up to four switching hubs can be connected in series.
•
Connect REAC devices to a switching hub that supports
100BASE-TX.
•
Carefully read the owner’s manual of the switching hub you
use.
Pin configuration diagrams
Cat5e Ethernet cables
(RJ45 EtherCon type connectors)
Audio jacks (XLR)
TX+
TX-
RX+
RX-
TX+
TX-
RX+
RX-
GND
COLD
HOT
GND
HOT
Requirements for switching
hubs
M-380_e1.book 212 ページ 2010年6月30日 水曜日 午前10時31分