Installing Ferrite Beads - Nortel Remote Gateway 9110 Installation And Administration Manual

June 2005

Installing ferrite beads

The Remote Gateway 9110 circuit card installation kit contains two ferrite
beads. Ferrite beads protect the Ethernet and power supply cable from
electromagnetic interference (EMI). The two heavy pieces of ferrite come in a
plastic-hinged cover that forms a block and has a hole in the middle for the cable
to pass through. You must install the ferrite bead close to the plug that connects
to the Remote Gateway 9110 circuit card.
To install the ferrite beads for both the Ethernet cable and the power supply
cable:
1 Open the plastic latch at the side of the ferrite bead.
2 Lay a cable across the middle of the ferrite bead.
The ferrite bead must be close to the cable connector.
3 Loop the cable tightly around the ferrite bead.
There must 2 loops of Ethernet cable around the ferrite bead (the Ethernet
cable lays across the ferrite bead 3 times).
There must be 3 loops of power supply cable around the ferrite bead (the
power supply cable lays across the ferrite bead 4 times).
4 Close and latch the ferrite bead.
Note: You may need to adjust the cable loops to make them as tight as
possible.
Remote Gateway 911x Series Installation and Administration Guide
Installing the Remote Gateway 911x series unit
61