Operation Manual

FP+ Series Operation Manual 20
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 to exhibit erratic
behavior and display inaccurate data. However, this
situation will not damage the amplier circuitry.
Up to 60 ampliers can be connected to one NLB
60E in a daisy-chain or closed loop.
When the NLB 60E is powered up, the NomadLink
network receives phantom power. This causes the
blue NomadLink LED on the amplier front panel
and the NomadLink LED on the rear panel to light
up. NomadLink is active even when the amplier has
mains power disconnected or is not yet powered
up.
The amplier does not have a stand-by power
supply for the network. The network is solely
powered from the NLB 60E. Should an amplier fail
or be inadvertently disconnected from the mains,
network integrity is fully maintained and all ampliers
remain visible on the system.
5.7.2 Connection and setup
The NomadLink network requires use of an NLB
60E NomadLink Bridge & Network Controller. The
NomadLink network is established by connecting the
NLB 60E OUT port to the rst amplier’s IN port.
Then a daisy-chain is established by connecting the
rst amplier’s OUT port to the next amplier’s IN
port, and so on. If a closed loop network is desired
for improved redundancy (highly recommended), the
last amplier’s OUT port must be connected to the
NLB 60E’s IN port.
For all connections, straight Cat-5 RJ45-equipped
Ethernet cables should be used.
To ensure full performance of your NLB 60E
NomadLink Bridge & Network Controller
with the expanded range of FP+ Series
ampliers, as well as full compatibility with
Lab.gruppen’s third party control protocol, please be
sure that you are using the most up-to-date rmware.
This is available for download at:
www.labgruppen.com/index.php/support/soft-
ware_rmware/
OPERATION AND PERFORMANCE 5
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Optimal NomadLink performance can only
be assured when using Cat-5 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
below for an example of how to create a
converter.
Figure 5.7.2: NomadLink RJ45 to XLR wiring
schematic
If any cable format or connection other than
Cat-5 (or better) and RJ45 is utilized,
network performance may be compro-
mised. In this event Lab.gruppen cannot
guarantee that the NomadLink network will be fully
operational.
5.7.3 NomadLink network cable lengths
In situations where the ampliers and the NLB 60E
will be positioned in different locations at some
distance from each other, or where groups of
ampliers within a single subnet with up to 60 units
will be installed with a distance in between, these
general rules may be considered:
Below are typical examples of NomadLink network
setups:
▸ Rule 1: The maximum cable length in between
any two devices may not exceed 300 meters /