keo eke
Razorback
Premium
join:2002-11-20
Georgia
| reply to ThreeD
Re: Disgusted with cable 1st few hours
According to DOCSIS specs modems should WORK from -15 to +15 but it says nothing about "quite nicely". I would say that having an upstream in the mid 30's and low 30's is unusual at least by design. Your modem will find the downstream and then will start broadcasting from +8 to +58dbmv to the headend until the headend says "I see you" it is at that point that the headend can adjust levels at the modem but only by 1 dbmv or so. Your SNR of 32.1 is OK, Modems should work from about 24 to 36db of SNR with no problem but it is better to be on the upper end than the lower end and you can add a db or two each way.
Once your signal gets above 54 or 55 dbmv other factors(distortions) come into play but up to that point your CNR(carrier to noise) and SNR(signal to noise) will continue to improve but once above that threshold the other distortions rapidly cancel out the affects of higher signal level. The same applies with to low of a signal, CNR and SNR will not be high enough away from the noise floor for good digital(modem) operation. |
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bigjer
Premium
join:2002-03-26
| Hey, Thanks to the many experts on this forum I have achived really good speeds.
Upload-130kb/s
Download-3mb/s
1) I can't complain about that. Mostly what I did was reboot the modem ( shut down overnight ).
2) I went to speedguide.com as you people recommended and downloaded a registry tweak for concurrent downloads and that was it.
Ping tests (PCPitstop) were good, between 14ms & 100ms mostly. With the exception of the last site on the test. Australia I think. That one was over 200 ms.
My computer runs great, has a snap to it it didn't have before.I thank you for your sharing your knowledge and experience with me. Have a good night. |
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