Cable Forum - View Single Post - Power Levels For Cable Broadband And Cable Tv

Axegrinder · 23-10-2009, 20:02

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.

23-10-2009, 20:02	#4
Axegrinder Inactive Join Date: Jun 2007 Location: Shottingham Age: 34 Services: Virgin BB M 10Mb Freeview Posts: 720	Re: Power Levels For Cable Broadband And Cable Tv 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.