In Reply to: RE: signal is cleaned up by the cable posted by fmak on July 10, 2012 at 10:22:08:
Mercman has gotten to the bottom of why these cables are active.
You can be sure that the people building the active Telecom cables cited in the linked article are quantifying their results. These cables are going into systems that will be accpetedas working or rejected as not working according to measured bit error rates. The people building these cables will have the appropriate test equipment to measure and tweak components as required. If a communications channel is pushing the state of the art when designed, then it is much harder to design and specify individual components so that "mix and match" combinations will work reliably. This also tends to over constrain tradeoffs that may arise in the future, e.g. if better transceivers become economical cost may be reduced by using them while substituting lower performance and cheaper wiring.
The Telecom industry is not to be confused with the Information Technology "industry". The Telecom industry has a tradition of careful engineering going back over 150 years backed by known laws of physics and mathematics.
Tony Lauck
"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar
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Follow Ups
- RE: signal is cleaned up by the cable - Tony Lauck 11:41:50 07/10/12 (1)
- Why? - fmak 12:48:09 07/10/12 (0)