View Full Version : Power Levels For Cable Broadband And Cable Tv
chambohambo
23-10-2009, 18:15
What should the downstream power level be and the snr and what should the upstream power level be?
Axegrinder
23-10-2009, 18:16
Are you ex-Telewest or ex-NTL?
chambohambo
23-10-2009, 18:48
ex-Telewest
Axegrinder
23-10-2009, 19:02
Downstream SNR, above 30 is preferred, 28ish being the lower limit (i think)
Downstream power should be as close to 0 as possible, with the limits being -6dbmv to +12dbmv
Upstream power should be no lower than around 32dbmv and no higher than 58dbmv. If you are on QAM16 the power level should not be higher than +55dbmv.
Quiet_news
23-10-2009, 19:23
DS I wouldn't have it higher than +10 ... field runs with -10 - 10 across the board .. but it depends who you speak to ...
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