SKAARHOJ DEVICE CORES
Network Recommendations
Facts
• SKAARHOJ controllers have a 100 mbps network interface
• Network switch must have Auto-MDI/MDIX
• Network switch must support 100 mbps
• PoE: IEEE 802.3af
• SKAARHOJ controllers only support Half Duplex mode without Auto-Negotiate
When connected to a network switch, the yellow LED (lower left) at the ethernet jack will be on. If the
device in the other end supports TX/RX auto detection you may be able to connect the SKAARHOJ
controller directly to your device, otherwise use a crossed cable or a network switch (the supported
setup). Remember a SKAARHOJ controller and client must be on the same subnet (192.168.10.* or one
you set up in the controller). If you have multiple SKAARHOJ units connected to the same network they
need to have different IP addresses!
Power over Ethernet (PoE) Speci
fi
cations
We use the PoE industry standard 48V IEEE 802.3af. If you want to power our controllers using PoE it is
important your switch supports this standard. Please notice some manufactures such as Ubiquity have
their own non-standard 24V type of PoE which is incompatible with our controllers. Especially pay
attention to the standard if you use a PoE injector.
Troubleshooting
If you experience no network activity at all try one or more of the following suggestions:
• Use a managed network switch
• Force network switch port to 100 mbps
• Try a different network switch
1GB or 10 GB switches can have issues with our 100 mbps interface if not properly managed. The iMac
Pro with 10 GB have issues if connected directly to our controller. Try with a USB to ethernet adapter in this
case.
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