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5.2.4 CABLING
A CAT-5 or better cable with RJ-45-compatible connectors is required
for each module.
NOTE: Ethernet cable length is limited by specification to 328 ft /
100 m. Longer runs are possible using network hubs or switches as
repeaters or by conversion to fiber optic cable.
5.2.5 AUDIO/COMPUTER INTERFACE
Audio and RS-232 (for DSAPilot control signals) must be converted to
the CobraNet protocol and connected to the network via an RJ-45
Ethernet port. Products that do this are available from several
manufacturers. Your choice will depend, in part, on how many and what
form of audio signals (digital or analog) you need to distribute.
Manufacturers of converters include:
Peavey, QSC, Rane, Symetrix, Whirlwind, and Yamaha.
5.2.6 MODULE INTERFACE
An optional EAW CM-1 CobraNet Interface Card must be installed in
the slot provided in the module. To do this, see installation instructions
that accompany the CM-1.
Connect the PRIMARY RJ-45 Ethernet connector to the Ethernet cable.
The SECONDARY RJ-45 Ethernet connector on the CM-1 is for
connecting to a second, redundant Ethernet network. This would be
designed as a back-up network that automatically takes over in the event
of failure in the primary network.
The digital audio received by the CM-1 connects directly to the loud-
speaker’s digital signal processing. It is converted back to analog at the
inputs to the internal power amplifiers.
5.2.7 MULTIPLE MODULES
To connect multiple modules to the network, the Ethernet output on the
audio/computer interface must connect to a network switch or hub. A
network switch is normally recommended. The switch must have an
Ethernet port for each module which also means each module in a DSAi
cluster.
A CAT-5 cable is required from the Ethernet port on the CM-1 Interface
Card in each module to its port on the network switch. For networks
requiring cable runs longer than 328 ft / 100 m, a repeater network or
fiber optic cabling is recommended. Do NOT mix hubs and switches on
a repeater network. Network switches and hubs are available through
most computer retailers.
5.2.8 SUPPORT FOR COBRANET / ETHERNET
See Sections 8.4 and 8.5 for support information for Ethernet and CobraNet.
17
CM-1 INTERFACE CARD
4X FLAT
HEAD
SCREWS
Figure 5.2.6 CM-1 Interface Card
(See Installation Instructions with Card)