Vampyre
join:2006-03-10
Goshen, IN
| [Connectivity] Working! WOOT
Ok, so I've posted my problems in here before... about how my modem would drop connection and I would have to go outside and unplug the cable from the house and reconnect it to get the singal back...
after 1 year of that, I got a tech out here to work on it, and low and behold he fixed it. and it was the very same thing I told them needed to be done 2 techs ago....
he ended up replacing the cable from the pole to the house (they still need to come bury it) but it's working like a champ now... no drops for 1 week...
and my modem levels have never looked better...
Downstream Value
Frequency 711000000 Hz
Signal to Noise Ratio 36 dB
QAM QAM256
Network Access Control Object ON
Power Level -3 dBmV
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading
Upstream Value
Channel ID 1
Frequency 34400000 Hz
Ranging Service ID 726
Symbol Rate 2.560 Msym/s
Power Level 55 dBmV |
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EG
The wings of love
Premium
join:2006-11-18
Union, NJ | W.I.W., 55dB upstream power is still marginal.. |
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Vampyre
join:2006-03-10
Goshen, IN | reply to Vampyre
who cares, my modem has not dropped off once...
after all most 2 years of service drops ever 10 mins I'm happy.. and I get blazing fast speeds |
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EG
The wings of love
Premium
join:2006-11-18
Union, NJ
edit:
July 24th, @06:23PM
| Oh, no begrudgement intended here and I'm happy that you now have some stable connectivity !! 
What I am saying is that your current UPL does not leave very much wiggle room in case there are intermittent fluctuations which could very well happen, so I personally wouldn't throw a block party celebrating a level of 55dB, and that you should still be somewhat concerned.. |
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Vampyre
join:2006-03-10
Goshen, IN | reply to Vampyre
Ya, I know.. but with the crappy service I have been getting anything is better then nothing!!! LOL |
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EG
The wings of love
Premium
join:2006-11-18
Union, NJ
| said by Vampyre  :Ya, I know.. but with the crappy service I have been getting anything is better then nothing!!! LOL I wish you the best of luck sir ! |
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alfnoid
Premium,MVM
join:2002-02-18
 ·Comcast
| reply to Vampyre
55 is way too high not borderline...I bet his TX modulation is not QPSK since his RX is QAM 256...if it were it would be borderline.
So therefore if he has QAM16 like I suspect, it is out of spec and he still needs a tech out.
I have seen QPSK work @ a TX of 62...doesn't mean it should be working or will stay working. |
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EG
The wings of love
Premium
join:2006-11-18
Union, NJ
edit:
July 25th, @08:43PM
| There is some amount of personal opinion involved here, and the accuracy of any particular modem's measuring mechanism, and its tolerance of marginal or supposedly out of spec signal figures must also be taken into account, and I'm certainly not completely disagreeing with you.
I will say however that "way out of spec" can be somewhat subjective, especially if their modem is not currently re-booting spontaneously and they are not currently experiencing any connectivity issues. |
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Vampyre
join:2006-03-10
Goshen, IN | reply to Vampyre
So even though it's working I should call a tech.. it took 2 years to get them to even get it to stay connected for more than 30 mins |
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alfnoid
Premium,MVM
join:2002-02-18
·Comcast
| reply to Vampyre
Well even with the modem making a guess since you can only really measure it at the CMTS, 55 when it should top at 50 is way too high for a service tech to leave it at.
I am still going to assume that his TX mod is at min QAM16, but the same goes if it were QPSK and the limit were 58.
If I left a modem's TX at 55 back when I was in that position and my sup happened to go out on it because there was a repeat...hell to pay is all I'll tell ya.
I just think that the OP is going to see more issues with connectivity so he may want to get it checked further.
Tell you what...call support tell them you have been have connectivity issues and ask them to tell you your levels.
They have a max/min limit that they are supposed to use to dispatch service calls on.
Assuming you have an extra 30 mins lying around. |
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Vampyre
join:2006-03-10
Goshen, IN | reply to Vampyre
the tech looked when he was here after he ran that new cable, and he said, those were very good levels... |
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EG
The wings of love
Premium
join:2006-11-18
Union, NJ | Well 55dB UPL is not "very good"...
Some of the premise techs word's are not necessarily *gospel*.. |
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EG
The wings of love
Premium
join:2006-11-18
Union, NJ
edit:
July 25th, @10:34PM
| W.I.W., here is a direct quote from a sticky troubleshooting topic written by a possibly former Forum Administrator at the comcast.net help forums:
>>"• Upstream Power Level: Ideally this should be within the 30dBmV to 50dBmV range. If it is between 50-55dBmV, you are approaching the upper-limits but should still be able to operate. If this is above 55dBmV or below 30dBmV, you will likely start to see frequent disconnects or modem reboots."
This quote was referring to using the QAM 16 upstream modulation scheme. |
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