1
U
SE
R
M
AN
U
AL
N
S6
/N
S1
2P
/N
S1
2P
F
Connecting another Class 3 device (15 Watt) would lead to an allo-
cated power of 105 Watts, exceeding the maximum of 100 Watts. This
port will therefore not be enabled.
Disconnecting one of the other Class 3 devices will result in enough
unallocated power to enable this newly connected device.
When an 802.3AF compliant Ethernet Switch allocates power to an
attached device, it will use pins 4/5 and 7/8 as positive and negative
conductors. These pairs are unused in other standards and reserved
for this use. Please note that an RJ45 connector needs to be com-
pletely wired to allow for this functionality.
Copper Ethernet cabling
Ethernet is typically transported on a 4-twisted pair cable. Multiple
types of cable are available these days, conforming to various stan-
dards, with and without shielding.
For 100 Mbit Ethernet a CAT5 cable is a minimum requirement.
Maximum operational cable lenghts are typically 95 metres with
UTP (unschielded twisted pair) cables, 50m with SFTP (shielded foil
twisted pair), FTP (foil twisted pair) or STP (shielded twisted pair)
cables.
In industrial and office environments the use of a RJ45 connector
is common. The XLNT Ethernet switches are fitted with compatible
Neutrik EtherCon
®
connectors. Please note that the use of certain
Ethernet devices may imply a specific ethernet system layout. Always
refer to that devices' manual for details.
Fiberoptic Ethernet Cabling
(NS12PF Ethernet Switch Only)
The NS12PF Ethernet switch is supplied with 2 Fiberoptic Ports.
These ports are to be used with Neutrik OpticalCon
®
cabling only.
The 4 metal pins in this connector are left unused in the NS12PF
Ethernet switch.
The transceivers used in the NS12PF Ethernet switch are emitting
data in multimode, 125/50
m
m.
The maximum operational cable length is typically 550 metres with-
out couplers. Observe proper handling instructions from Neutrik at
all times.
Chapter 1
Description
