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xkennyx
30-04-2007, 16:00
Hi All,

As of late i have been getting quite a slow connection, i know this is due to traffic shaping. For the last few days my download speeds have been slow. I Also have a 10db attenuator connected onto my line. I am just wondering if my power levels on my cable modem are okay i also run through a WRT54GS Router. My levels are as Follow:


Downstream Status


OperationalChannel ID




3Downstream Frequency




339000000 HzModulation




QAM256Bit Rate




10240000 bpsPower Level




-0.57 dBmVSignal to Noise Ratio


34 dB


Upstream Status


OperationalChannel ID




4Upstream Frequency




37500000 HzBit Rate




384000 bpsPower Level


51.00 dBmV

Thanks
Kenny
Druchii
30-04-2007, 16:03
Everything seems fine, apart from the upstream power level, seems a tad high to me. BUT, the most important thing, is your connection working fine? If it is then there is absolutely nothing to worry about at all :)
xkennyx
30-04-2007, 16:11
Hi thanks for the speedy reply..

My connection has been stable for the last 4 years. Roll on 20mb in plymouth.

Thanks Kenny
ladyboy
30-04-2007, 18:25
take that attenuater off 51 db is abit high and it will drop to 41 and your signal will go up to +9.
Stu038
30-04-2007, 18:36
take that attenuater off 51 db is abit high and it will drop to 41 and your signal will go up to +9.

On the other hand leave it on as all your doing is shifting your downstream to border line levels and although the ideal upstream is 48dBmv, 51dBmv is acceptable, especially when you've already mentioned that your slower speeds are due to traffic shaping ;)
XFS03
01-05-2007, 11:57
On the other hand leave it on as all your doing is shifting your downstream to border line levels...
According to the sticky thread at the top of this forum, the DS levels should be between -6 to +15dBmV. Removing the attenuator will put his power level around 5dBmV above the ideal (+4.5dBmV), which shouldn't affect anything as it is currently about 5dBmV below the ideal.

...although the ideal upstream is 48dBmv, 51dBmv is acceptable...
Again, according to the sticky, the US should be between 28 and 53dBmV, so removing the attenuator should shift it away from the upper limit.

The attenuator was probably fitted while the modulation was still 64QAM. The ideal levels for 256QAM are different.


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