DMS1
join:2005-04-06
Carrollton, TX | [TV] Convincing someone how FiOS TV works
Hi all
Can someone please chip in and help me convince the guy who's arguing with me here: »HD TV? (second page) how FiOS TV works. |
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KenAF
join:2006-01-23
Arlington, VA | »fioswatch.com/about-fios/ |
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new2fios
join:2006-07-20
Camillus, NY
| reply to DMS1
Hmm. This article »www.ofcnfoec.org/materials/Piehl···erlay%22 referenced by DMS1 does seem to imply that the 1550nm overlay is entirely analog but I am not convinced that this is true in FIOS. In this article referenced by KenAF »fioswatch.com/about-fios/ it clearly states that the 850MHz ANALOG signal is actually encoded on the fiber as a DIGITAL 3.5Gbps signal on the 1550nm overlay, just a stream of ones and zeros. So the ONT definitely has a DAC in it to reproduce the RF. I think other authors are just trying to oversimplify things. There is just no way that the optical channel can have low enough distortion to carry 850MHz worth of RF in analog form. And please, everybody, don't flame people or make remarks about their intelligence or their professions. |
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sdgthy
@optonline.net
| reply to DMS1
It's a silly argument, FiOS TV is exactly the same as HFC cable. This document: »www.corning.com/docs/opticalfibe···0005.pdf on page 5 is nicely charts the difference, and why FiOS has an advantage over cable. |
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DMS1
join:2005-04-06
Carrollton, TX
| reply to DMS1
Thanks for your help guys. I wasn't asking people to take sides, but was just annoyed that I was being snubbed without reason. FYI, here is a copy of the final reply I posted to the offender:
"Hopefully some of the other replies here have convinced you that I am not the rubbish-spouting idiot you seem to think I am. In case not, here is a link to an article about G.983.3 which is the standard used for FiOS TV: »www.bechteltelecoms.com/docs/btt···cle8.pdf. You will see it contains some in-depth analysis relating to the use of fiber for transmission of an analog RF overlay.
Finally, I would ask that in the future you do not make unnecessary, and unwarranted, comments about posters in these forums. Myself, along with most others who post here, do so because we believe that we are able to help and advise others. Making derogatory comments doesn't help anyone. By the way, for the record, I am not an accountant, but rather a professional electrical engineer with nearly twenty years experience designing advanced telcoms equipment." |
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DMS1
join:2005-04-06
Carrollton, TX | reply to DMS1
I spoke too soon. Can anyone actual fathom the point this guy is trying to make: »HD TV? |
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