Lab.gruppen C Series 5:4X - Manual (Page 19)

C Series C 20:8X, C 10:8X, C 10:4X and C 5:4X Operation Manual rev. 1.1.4
Quick Guide Overview
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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 performance limitations to cable lengths on
a NomadLink network, both in terms of total cable
length in the loop and between any two devices.
These limitations follow standard Ethernet cabling
protocols. Read the Operation and Performance chapter in this
manual, or the Operation Manual supplied with the NLB 60E, to
ensure the network is configured within these constraints.
When using a system that is based entirely on C...X
amplifiers, the total number of amplifiers assigned to
one NLB 60E subnet should not exceed 30. When a
system has a mix of models that include C:, FP+
Series and C...X amplifiers, a total of 60 amplifiers is the
recommended maximum.
Although the network will function as an open loop
under most circumstances, it is strongly recom-
mended 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 can be connected to the GPI connectors on the NLB 60E for control of fire-alarm
systems or external power sequencers. For more details, please read the Operation Manual supplied with the
NLB 60E.
All C...X amplifiers should be counted as two devices
in the total count of 60 devices allowed in a mixed-
model NLB 60E network.