FCC Considerations
NOTI•FIRE•NET™ PN 50257:E 7/5/01
21
FCC Considerations
In order to comply with FCC regulations regarding radio frequency missions, a ferrite cylinder
(NOTIFIER PN 29087) must be installed on every twisted pair circuit connected to a MIB-W (Two
cylinders included) and MIB-WF (one cylinder included).
Installation on the NRT/NCS
The following steps must be completed to install the ferrite cylinder on the NRT/NCS (refer to
Figure 19):
1.
Thread the twisted pair (two pairs for a bus connection) through the ferrite cylinder.
2.
Slide the cylinder along the pair(s) toward the MIB on the back of the NRT/NCS so that the
closest edge of the cylinder is no more than 3 inches away from the terminal connection block.
3.
Secure the ferrite cylinder to the wiring with the supplied tie wrap at each end of the cylinder.
4.
If used, repeat for the remaining twisted pair(s) on a MIB-W (second port).
Figure 19 Installation of the Ferrite Cylinder on the NRT/NCS
Installation on the INA and SIB-NET
The following steps must be completed to install the ferrite cylinder on the INA and SIB-NET
(refer to Figure 20):
1.
Thread the twisted pair (two pairs for a bus connection) through the ferrite cylinder.
2.
Slide the cylinder along the pair(s) toward the entrance point on the cabinet (not toward the
MIB) so that the edge of the cylinder and the cabinet are separated by no more that three
inches.
3.
Secure the ferrite cylinder to the wiring with the supplied tie wrap at each end of the cylinder.
4.
If used, repeat for the remaining twisted pair(s) on a MIB-W (second port).
Figure 20 Installation of the Ferrite Cylinder on the INA and SIB-NET
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