C Series Operation Manual
3
7.7 NomadLink network and PC
editor
7.7.1 NomadLink network in the amplifiers
All C Series amplifiers are equipped with the pro-
prietary NomadLink network interface. This includes
two EtherCon housed RJ45 connections: one IN
and one OUT.
Use standard straight Cat5 Ethernet cables with
RJ45 connectors to connect the amplifier to the
NLB 60E network bridge or to daisy-chain multiple
amplifiers.
It is very important that two IN or two OUT
ports are NEVER connected to each other.
This will cause the NomadLink communi-
cation and DeviceControl editor to exhibit
erratic behavior and display inaccurate data.
However, this situation will not damage the
amplifier circuitry.
Up to 60 amplifiers can be connected to one NLB
60E in a daisy-chain or closed loop.
When the NLB 60E bridge is powered up, the
NomadLink network receives phantom power.
This causes the blue NomadLink LED on the
amplifier front panel and the NomadLink LED on the
rear-panel to light up. NomadLink is active even when
the amplifier has mains power disconnected or is not
yet powered up.
The amplifier does not have a stand-by power
supply for the network. The network is solely
powered from the NLB 60E. Should an amplifier fail
or be inadvertently disconnected from the mains,
OPERATION AND PERFORMANCE 7
network integrity is fully maintained and all amplifiers
remain visible on the system.
7.7. Connection and setup
The NomadLink network requires use of a
NLB 60E. The NomadLink network is established
by connecting the NLB 60E OUT port to the first
amplifier’s IN port. Then a daisy-chain is established
by connecting the first amplifier’s OUT port to the
next amplifier’s IN port, and so on. If a closed loop
network is desired for improved redundancy (highly
recommended), the last amplifier’s OUT port must
be connected to the NLB 60E’s IN port.
For all connections, straight Cat5 RJ45-equipped
Ethernet cables should be used.
Optimal NomadLink performance can only
be assured when using Cat5 cables.
However, as NomadLink is only using two
wires + ground for communication and
phantom power it is possible to create converters
from RJ45 to, for example, XLR connectors using
2-wire shielded cable. The NomadLink network can
then be operated using a standard tie-line in a
multicore signal distribution system. See the drawing
opposite for an example of how to create a
converter.
If any cable format or connection other than
Cat5 (or better) and RJ45 is utilized, network
performance may be compromised. In this
event Lab.gruppen cannot guarantee that
the NomadLink network will be fully operational.
Summary of Contents for C 68:4
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