4. Quick Guide Overview
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C Series C 88:4, C 68:4, C 48:4, C 28:4 and C 16:4 Operation Manual rev 2.2.3
Mode -
Select VPL mode to either Hard or Soft operation. For channels driving sub-woofers and low-fre-
quency drivers, it is recommended to use the Hard setting for optimal operation. For mid- and high- frequency
drivers, always select Soft.
4.3 NomadLink / Ethernet network setup
The amplifier includes, as a standard feature, internal facilities for the NomadLink monitoring and control
network. All features of the NomadLink network are accessible via a PC running Lab.gruppen’s proprietary
DeviceControl software. A single rackspace NLB 60E NomadLink Bridge & Network Controller accepts the
TCP/IP data stream from the computer and converts it to the NomadLink protocols. Even when no computer is
connected, the NLB 60E can initiate stand-alone power on/off and muting functions, as well as report any fault
or warning conditions.
The PC is connected to the NLB 60E using a standard Ethernet interface and a crossed Cat-5 cable (peer-
to-peer setup). If a hub or switch is in the network, standard “straight” Cat-5 cables must be used. The front
and rear Ethernet connections on the NLB 60E can be used individually, but only one PC at a time running
DeviceControl can access the subnet.
The default fixed TCP/IP address of the NLB 60E is 192.168.1.166. The subnet mask is 255.255.255.0. For
further details, please refer to instructions supplied with the NLB 60E unit.
The NomadLink connections use standard “straight” Cat-5/RJ45 equipped cables. For a safer mechanical
connection it is possible to use Neutrik EtherCon “XLR-type” housings on the cables.
The OUT port from the NLB 60E must be connected to the IN port of the first amplifier. The OUT port from
the first amplifier in turn connects to the next amplifier’s IN port to form a daisy chain The OUT port on the last
amplifier is connected to the IN port on the NLB 60E to close the loop.
There are electrical limitations to cable lengths on a
NomadLink network, both in terms of total cable length in the
loop and between any two devices. Read the Operation and
Performance chapter in this manual, or the instructions
supplied with the NLB 60E, to ensure the network is
configured within these constraints.
Although the network will function as an open loop under
most circumstances, it is strongly recommended that the
loop be closed by connecting the last amplifier’s OUT port
to the NLB 60E’s IN port. Doing so will improve redundancy
and communication speed.
External contact closures and 24 V low/high triggers can be connected to GPI connectors on the NLB 60E for
control of fire-alarm systems or external power sequencers. For more details read the instructions supplied with
the NLB 60E.
Many newer laptop computers will allow peer-to-peer
connection with the NLB 60E using a standard
“straight” Cat-5 cable instead of a crossed cable.
US National Differences cl.16.3 requires that NomadLink
network cables must be rated VW-1.
