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Old 23-01-2013, 12:37   #1
apb27
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question about fpas

the snow was messing with my connection so i put one of these back on and the levels have dropped from 8 to 2.

was just wondering if its better to be a little above 0 or a little below (i also have another one if needed), and if using two fpas if it makes any difference which one is in front/behind the other.

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Old 23-01-2013, 13:11   #2
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Re: question about fpas

Hi
First can not see any pic (if you tried to show us)
fpas guessing you mean forward path attenuator which is the correct one yes
Personal i think the same little more up or down as long is around or close 0
I dont think will make any difference one behind the other.is a post with a technitian done same
http://www.cableforum.co.uk/board/12...er-levels.html
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Old 23-01-2013, 13:16   #3
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Re: question about fpas

The optimum downstream range is +7 to -3. It'll work outside that range if the SNR is high. The DOCSIS spec says +15 to -15 but el cheapo kit rarely works at the extremes. For example my SH misbehaves above +7 dBmv on good SNR. Due to an area fault, it's currently struggling at between -4 and -11 dBmv across different channels with poor SNR.

So 2 dBmv is perfect. -2 dBmv is also perfect.

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Old 23-01-2013, 14:14   #4
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Re: question about fpas

Had mine working good with -11,12 ... a cable repull by time fixed to around 0
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Old 23-01-2013, 14:33   #5
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Re: question about fpas

ok cheers guys
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