Some good points, Ed, and some need for clarifications on my part.
Yes, Blue did some stuff with 3270 (more likely they tried to discourge it, like everything else at the time that "wasn't invented here," but later relented), and others such as WANG and Fibronix had been ahead of the curve, as well, where impedance matching coax to tp was concerned.
But it was T who pursued the use of baluns for purposes of NTSC quality (commercial TV grade), or near NTSC when pushed to the ropes, over t.p., which had not been the case, previously. This is from memory, and if you or anyone else here knows of another vendor who was pushing their baluns with "guarantees" covering full blown TSC video/tp at that time, I'd like to know who it was, too.
It was a major issue with T, at the turn of the decade (going into the Nineties), to demonstrate that their Baluns and Systemax line of cabling could handle it, in addition to the other uses of baluns for the purposes you mentioned. Of course, each application had its own model of balun associated with it. And were they ever overpriced at the time!
I recall attending a preview of these capabilities in the auditorium of 32 Avenue of the Americas with Robert Hom (remember Robert?) in 1990 or 91, I believe it was, and wondering how they were going to maintain near-NTSC over 800 feet of unshielded copper twine. Anyhow, that's my recollection.
And you're correct, of course. It's baseband, and controllers and other "closet" electronics are required in multi-link applications. Your points are all well taken. Thanks.
As for the market data vendor terminals you mentioned, you might recall the advance work that we did, being the first to engineer fiber adaptation to their boxes on a large scale project, while relo'ing Solly into 7 WTC. Is the high-resolution Bloomberg monitor now using tp baluns, as well? I didn't know that to be the case, but I tend to blink excessively these days when looking in that direction. Please advise if this is now so.
I can recall their RGB bandwidth requirements always being excessive, demanding of fiber links to each desk, in leau of that fat composite coaxial cable assembly that they were provisioning. Thanks for the memories...
Regards, Frank Coluccio
ps - next time you are in the Wall Street area, I'd like to show you the wares that are being trialed for video conferencing there, using tp to the controllers and end points (conference rooms and each desktop). It can make a believer out of an atheist. I was turned, in any event...
|
