With this ring?

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Hawaii Cruiser's picture
Last seen: 7 years 1 month ago
Joined: Jan 20 2005 - 16:03
Posts: 1433
With this ring?
Image icon SCSIring.jpg10.51 KB

Out of curiosity, can someone tell me what's the purpose of these metal rings you find on some old SCSI cables? This one came out of my PM8600.

protocol6v's picture
Last seen: 13 years 10 months ago
Joined: Apr 21 2006 - 20:58
Posts: 339
IIRC they are supposed to min

IIRC they are supposed to minimize interference.

Jon's picture
Last seen: 12 years 11 months ago
Joined: Dec 20 2003 - 10:38
Posts: 2804
It's a ferrite bead/ring to r

It's a ferrite bead/ring to reduce RFI. They work. I ended up putting 4 on various wires/positions of my desktop speakers because my house wiring is old and it actually pickes up a radio station. There was a point were I could position the speakers and the RFI was strong enough to hear the radio on the other side of the room. With the ferrite cores I put on, I can barely make out the RFI by leaning in close to the speakers. For all the black magic of SCSI the ferrite beads really do work. It's just a matter of if you really need them or not in your particular setup.

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