Biamp LTR - Manual (Page 82)

Sending Control Surfaces
Network Considerations
The computer must have a 10/100 BaseT network card (NIC) installed. When connecting
directly to the Ethernet port on a single Audia
® or Nexia ® unit, a 'cross-over' CAT5 cable is
used. When connecting to a network (or system) of multiple Audia or Nexia units, a 'straight-
through' CAT5 cable is used (via an Ethernet switch). If Ethernet switches are 'managed', be
careful to assign all connections to 10 BaseT.
Ethernet has a cable length limitation of 100 meters, between the Ethernet switch and an Audia
or Nexia device. However, fiber-optic cable may be used to extend this distance limitation to 2
km. Fiber-optic cable can be used with switches that have fiber-optic ports, or media converters
can be used to interface fiber-optic cable with standard RJ-45 ports.
The computer must be assigned an IP address (under Network Card Settings>Properties). Most
computers set TCP/IP address automatically, but Audia and Nexia devices require manual
assignment. During the Audia or Nexia system design, each unit will have been set to a unique
IP address (example: 192.168.1.101 and 192.168.1.102). This
information must be available
from the system design file. The computer must then be assigned to that same network, but
also with a unique IP address (example: 192.168.1.200).
Many system designs require only a single Audia or Nexia device. These are systems where
the number of inputs/outputs, and the amount of DSP processing, does not exceed that of a
standard configuration. When a single unit is used, network considerations are simplified. The
only Ethernet connection is that between the computer and the Audia or Nexia
device ('cross-
over' CAT5 cable). A 'cross-over' cable is included with each device. NOTE: Audia systems
may include similar (but separate) network connections for CobraNet
® . Nexia systems may
include separate connections for NexLink, which utilize 'straight-through' CAT5 cables only.
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