That's what I get for cutting and pasting from a Google search..... Sorry...
bill ________________________________ From: cctalk <cctalk-boun...@classiccmp.org> on behalf of Bill Gunshannon via cctalk <cctalk@classiccmp.org> Sent: Tuesday, January 23, 2018 2:22 PM To: Grant Taylor via cctalk; Grant Taylor Subject: Re: Ethernet cable (Was: Sun3 valuations?) If you want a real hoot try reading what <https://books.google.com/books?id=tmbgBwAAQBAJ&pg=PA212&lpg=PA212&dq=what+was+the+purpose+of+the+black+bands+on+ethernet+cables?&source=bl&ots=DV53aRJc9P&sig=3GFr8Hz_uQjFELOrnXk8x8KjKVM&hl=en&sa=X&ved=0ahUKEwj-i_j_5u7YAhVD34MKHeSQC-wQ6AEIWzAG> "A System Administrator’s Guide to Sun Workstations"<https://books.google.com/books?id=tmbgBwAAQBAJ&pg=PA212&lpg=PA212&dq=what+was+the+purpose+of+the+black+bands+on+ethernet+cables?&source=bl&ots=DV53aRJc9P&sig=3GFr8Hz_uQjFELOrnXk8x8KjKVM&hl=en&sa=X&ved=0ahUKEwj-i_j_5u7YAhVD34MKHeSQC-wQ6AEIWzAG> has to say about it. Google has it available for reading. bill ________________________________ From: cctalk <cctalk-boun...@classiccmp.org> on behalf of Grant Taylor via cctalk <cctalk@classiccmp.org> Sent: Tuesday, January 23, 2018 2:13 PM To: cctalk@classiccmp.org Subject: Re: Ethernet cable (Was: Sun3 valuations?) On 01/23/2018 12:09 PM, Bill Gunshannon via cctalk wrote: > "Transceivers should be installed only at precise 2.5-metre > intervals. This distance was chosen to not correspond to the wavelength > of the signal; this ensures that the reflections from multiple taps are > not in phase. These suitable points are marked > on the cable with black bands." > > It cites "IEEE Standard 802.3<https://en.wikipedia.org/wiki/802.3>-1985. > IEEE<https://en.wikipedia.org/wiki/IEEE>. p. 121." Thank you for correcting ~> educating me. #learnSomethingEveryDay -- Grant. . . . unix || die
