kcharg
Kcharg
Premium,VIP
join:2000-10-28
Forney, TX
| reply to NoProxy
Re: [COMCAST] signal strength/HDTV & Internet question
said by NoProxy  :
I have my cable internet off the first split coming into my house, I am thinking of upgrading to digital HDTV, my main TV is off a 3rd splitter. I just hooked my cable modem up to this and everything works great passing through all 3 splitters so I assume I'm getting 2 way communications through all 3 splitters?
does this mean HDTV and VOD will work off my 3rd splitter?
are these good numbers for HDTV/ VOD to work without problems even at -10db?
The reading off the 3rd splitter on my cable modem is:
36 SNR downstream power level -10db
upstream power level is 58
The reading off my first splitter was
38 SNR downstream power level -2db
upstream power level 54
You should try and put that off of the first or second splitter as well. The DCT does act much like a cable modem in the sense that it has to talk back to the head-end. Our DCT's have problems when the return is more than 50db, now the modems have issues with a power level more than 55db. I would replace your first splitter with a 3-way splitter and run one line to the modem and one line to your cable modem and the last one going to other splitters for TV's.
kcharg
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kcharghttp://home.attbi.com/~kcharg/ |
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NoProxy
join:2002-01-04
1 edit | said by kcharg :
I would replace your first splitter with a 3-way splitter and run one line to the modem and one line to your cable modem and the last one going to other splitters for TV's.
kcharg
I'll give that a try, use a 3 way splitter with one feeding my modem, one feeding my HDTV box and the other to a 3 way splitter for the others. I am just wondering which should get the strongest feed?
Is -8 or -10db OK for the digital HDTV box? I think I will run the Modem and HD box off the 2 -7db and the rest of the Anolog tv's off the -3.5db.
I guess this setup gives me a "home run" to the Cable Modem and HD Box, I hope it works out. |
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NoProxy
join:2002-01-04
| reply to kcharg
I did what you all thought was better and my signal strength and power level improved on everything, I guess it is better to use a 3 way splitter than two 2 way splitters:)
I'm currently running my cable modem of the 7db port and the SNR is 38 Power level is -4dBmV my upsteam power level is 56
The 3.5db port is even better snr 38 -1dBmV and upstream power level is 53 (I may use this for the rest of my analog TV's)
The other 7db port is running -5dBmV snr 38 and upsteam power level is 56 will this one work for my HDTV box?? is the 56 upstream power level too high? |
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lumpy9138
Premium
join:2003-12-19
Elgin, IL | Yes, more than likely will have intermittent return issues at that high a level. |
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