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To: Bill Jackson who wrote (17053)	2/4/1998 10:37:00 AM
From: K. M. Strickler	Read Replies (1) \| Respond to of 24154

Actually cable IS two conductor (center and shield) and twisted pair has a 'signal and ground'! The advantage to 'cable' is that the induction interference is greatly reduced! It is definately more expensive, both in cost and size! The inter-wire capacitance of twisted pair will preclude much more speed (I think, but then I never thought that we would achieve the 100mbits that we have now). Cable is more of a 'waveguide' and presents a balanced terminated load where the signal diminishes only by distance not by interference. Of course the signal has to be regenerated (squared up) every so often so the receiver can distinguish between a 1 and a 0. The problem with the fire-wire over any distance is that it seems that data travels at a different speed over supposidly the same conductor. If the distance is long enough for just one bit to slip just one bit the data is corrupt and not usable. I don't know what the range is, but years ago when I was actively working on it, the distance was measured in 100's of feet, and not too many of those! I think fiber-optics, if they can get the interface cost down, could be the next real runner. Even that will take some time to get down to our level. In the telco's the links are already 'screaming'! I like the SCSI-FAW (now referred to as SCSI-3, I think)! Could we shorten the name to S-FAW or FAWS? Thoughts! Ken