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QAM64-100Meg - getting speeds less than 40mg
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Old 01-02-2012, 08:04   #46
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Re: QAM64-100Meg - getting speeds less than 40mg

i aint sure but thoery would suggest to me a power levle of 0 is probmatic as there nothing there so to say to push the data but i cant say that for sure maybe someon can confirm ifa power levle of 0 isa problem
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Old 01-02-2012, 08:14   #47
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Re: QAM64-100Meg - getting speeds less than 40mg

dBmv power levels are a relative measure. Actually 0 dBmv represents a power input of 1.33E-08 Watts at 75 ohms impedance. 3 dBmv represents twice that and -3 dBmv represents half that. I've posted a full explanation in the other place.

0 dBmv is ideal as a downstream power level.
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Old 01-02-2012, 09:47   #48
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Re: QAM64-100Meg - getting speeds less than 40mg

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Originally Posted by Sephiroth View Post
dBmv power levels are a relative measure. Actually 0 dBmv represents a power input of 1.33E-08 Watts at 75 ohms impedance. 3 dBmv represents twice that and -3 dBmv represents half that. I've posted a full explanation in the other place.

0 dBmv is ideal as a downstream power level.
cheers for clearing that up i was more thinking relative psyhics laws which 0 would be bad wasnt 100% if it would affect as it ould seem daft everything down to 0 ie 0.0001 and everything below ie -0.0001 etc would be fine
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