Sony ROOMLINK PCNA-MR10 Quick Reference Manual page 29

Attaching the ferrite core
In accordance with FCC Rules, Part 15, a ferrite core is supplied with the
network media receiver. The ferrite core should be attached to the network
*
cable , to reduce or eliminate electrical interference.
1 Open the ferrite core and place the core approximately 3-4 inches from the
end of the network cable.
2 Wrap the network cable twice around the ferrite core, lengthwise, with the
cable running directly through the center groove of the core.
3 Close the ferrite core tightly around the network cable until the core locks.
To attach the ferrite core
Ferrite core
* The network cable must be compatible with the 100BASE-TX standard.
Setting Up RoomLink
Ethernet port
29