| reply to KA3SGM
Re: Video On Demand pixeling What's the deal with the RG6 attenuators that Verizon installs? They are telling me that their signal comes out of the ONT "too hot" and they actually need to drop it a bit. This is something I certainly am not used to since Comcast could never get a good enough signal and needed to amplify just to keep a decent digital picture. Should these attenuators be installed on each leg of the coax, including the one to the Actiontec router? |
|
 KA3SGM- -... ...- -Premium
join:2006-01-17
West Chester, PA
 ·Verizon FiOS
 ·Cricket Broadband
| nofios, typically it is the signal from the ONT that is running too hot. Often +18 to +20db. The attenuators should be being placed on the coax coming from the ONT, into the splitter. The optimal signal for FiOS is in the -2 /+ 4 db range, so if you start with +18, add a 4 way splitter that looses 7 db, you still have +11 at each port on the splitter, so you would need to add a 9db attenuator to bring it down to +2, which is in the acceptable range.
This is as simple as I can explain it. The condition, or length of the coax runs add additional losses that have to be factored in too, but short runs of 30' or less of good quality RG6 with the proper compression fittings, should not cause any effect on signal reliability. |
|
| The signal at the ONT does come in +18 - +20db, and the attenuation is generally put on the input of the splitter, db ranges VZ uses is anywhere from -6db - +5db for the digital channels, and 0db - +11 db on the analog channels. If one of the legs has problems, sometimes they will put amplifiers on the line, but generally as a last resort (replacing the line being the best option).
The problem in this post seems to be on the internet side of things which is still transmitted to the STB via the Coax only at a higher frequency on MOCA. This doesn't seem to be the issue either, ON demand anything is only as good as the copy that the provider has at their end, ie if they have a bad spot in their copy, obviously no matter what you do on your end, you won't be able to get rid of that bad spot on your end. Try to rewind to the bad spot and play that again, and if it is still there, it is the content being delivered from HBO. |
|
| reply to nofios4u
If I had done your install, I would have used a larger splitter with a higher db drop rather than use those attenuators at every leg. I've recently gone on a few trouble calls and have found those attenuators to be the cause of the problem, more so when they are placed outside. As far as the router, there SHOULD NOT be an attenuator on that. There is an M&P about it that all techs should have read by now. We are not using those as much anymore because our newer ont's only put out about +13 on avg.
Now about the pixelation, I haven't encountered that yet. However I have gone out on trouble calls for the movie pkg channels having pixelation, and believe it or not, simply cleaning the fiber at the ont fixed this issue every time. Maybe this would fix it, who knows....ask the next fiber tech to check your 1550 signal at the ont and clean it up. It doesn't hurt to try. |
|
nh5
join:2006-01-21
Old Bethpage, NY | I had a tech here last week when I had VOD Issues he confirmed there is a pixelation issue with HBO On Demand more so than with the other on demand services |
|
| I've talked to tech support three times on this HBO-demand-white pixel issue. they dont have any answers. When I rewind, there is no pixel again, which makes me think it is a bandwidth issue.
Any thought to it being some sort of copy protection? |
|
nh5
join:2006-01-21
Old Bethpage, NY | That is what the tech told me certain tvs when hooked up with hdmi or component he told me have issues with hbo on demand. It has to be a copy protection issue. |
|
| reply to nh5
Did they ever fix the white pixeling on HBO VOD for anyone? I had a tech out here today about it and he has no idea what it is. He's supposed to come back but i'm not sure that his co-worker will find anything here that he didn't. Any fix for this???? |
|
|
|
