Nobody gets too awfully excited about FCC compliance in equipment rooms,
clamp-on ferrites usually get tossed with the rest of packing material,
few people end up using the official Cisco cables with the ferrites
held in place with heat-shrink tubing.
George
> From cisco-nsp-request@puck.nether.net Tue Nov 7 18:22:48 2000
> Resent-Date: Tue, 7 Nov 2000 18:17:05 -0500
> Received-Date: Tue, 7 Nov 2000 18:15:11 -0500
> Date: Tue, 7 Nov 2000 18:15:09 -0500 (EST)
> From: Charles Sprickman <spork@inch.com>
> To: <cisco-nsp@puck.nether.net>
> Subject: PA-MC-T3 and Ferrite beads
> Resent-From: cisco-nsp@puck.nether.net
> X-Mailing-List: <cisco-nsp@puck.nether.net> archive/latest/4216
> X-Loop: cisco-nsp@puck.nether.net
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>
> Hello All,
>
> I just bought a used PA-MC-T3 and while looking at the online manual, I
> came across this:
>
> "You must install a ferrite sleeve (also called a common-mode choke) on
> each 75-ohm coaxial cable to reduce the effects of electromagnetic
> interference (EMI). (Cisco Systems supplies two ferrite sleeves with your
> PA-MC-T3, one for each of the two 75-ohm coaxial cables.)"
>
> I've not seen this on our other cards (PA-T3, PA-CT3/4T1, PA-A3), which
> were all purchased new, and looking around the colo, I don't see anyone
> else with the ferrite filters on any T3 lines...
>
> Anyone have any thoughts on this?
>
> Thanks,
>
> Charles
>
> | Charles Sprickman | Internet Channel
> | INCH System Administration Team | (212)243-5200
> | spork@inch.com | access@inch.com
>
>
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