agustaf4
join:2006-11-22
Ocala, FL
| [Internet] Transmit Power Level all over
For the past week or so my transmit power level goes from 24-55 dbmv. This specifically happens between 12-5pm or so on a daily basis. You actually see the jump while logged in the modem spike anywhere between that range in hops of 20 or more. When it reaches like 24 my connection goes down for like a minute before coming back up, same happens also while this fluctuation is going on. Brand new wiring in the house. tech came in and ran the tester and replaced the modem also. Tech will be coming in tomorrow also to check the wiring on the pole and outside the house. My question is what could be causing this fluctuation around that time on a daily basis. Modem is a webstar. There are no splitters, is a straight coax from the room to the outside box were the drop from the pole comes in. I even plugged the modem straight to the coax outside bypassing everything and same deal. There was an incident bout 2 months or so on the block where a tree fell on the cable wiring and stretched the hell out of it. This lazy bastards didn't show up for like 2 days to fix it. Im wondering if something related to that is what may be causing this
current signal info is
Downstream Channel
The data shown in the table below provides information about the signal coming from the network to your cable modem.
Downstream Status
Operational
Channel ID
0
Downstream Frequency
609000000 Hz
Modulation
256QAM
Bit Rate
15360000 bits/sec
Power Level
2.5 dBmV
Signal to Noise Ratio
37.6 dB
Upstream Channel
The data shown in the table below provides information about the signal being transmitted to the network from your cable modem.
Upstream Status
Operational
Channel ID
1
Upstream Frequency
29504000 Hz
Modulation
16QAM
Bit Rate
2048000 bits/sec
Power Level
29.0 dBmV
Stays solid at those numbers once that time gap passes and the connection and speed is solid |
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Surfinusa
Premium
join:2001-02-08 | Cableguy should be able to fix it for you. |
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agustaf4
join:2006-11-22
Ocala, FL
| reply to agustaf4
tech was here, same deal, checked the wiring outside everything seems fine, he mentioned the transmit pl should a bit higher in the 30's or so. He put a splitter to bring it down cause its too high, it brought it to the 35 or so range, but the fluctuation is still there and as i am writing this seing it again. I did manage to get into the log area of the modem and this is what pops up. Showed it to the tech and he has no clue.
Fri Oct 30 19:59:49 2009 Critical (3) Started Unicast Maintenance Ranging - No Response received - ...
Time Not Established Critical (3) DHCP WARNING - Non-critical field invalid in response.
Fri Oct 30 19:35:18 2009 Critical (3) Received Response to Broadcast Maintenance Request, But no Un...
Fri Oct 30 19:30:49 2009 Critical (3) DHCP WARNING - Non-critical field invalid in response.
Fri Oct 30 19:28:20 2009 Critical (3) Received Response to Broadcast Maintenance Request, But no Un...
Fri Oct 30 19:18:27 2009 Critical (3) DHCP WARNING - Non-critical field invalid in response.
Fri Oct 30 19:13:02 2009 Critical (3) Received Response to Broadcast Maintenance Request, But no Un...
Fri Oct 30 18:42:24 2009 Critical (3) Started Unicast Maintenance Ranging - No Response received - ...
Time Not Established Critical (3) DHCP WARNING - Non-critical field invalid in response.
Fri Oct 30 18:24:04 2009 Critical (3) Received Response to Broadcast Maintenance Request, But no Un...
Fri Oct 30 19:30:27 2009 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/Q...
Fri Oct 30 19:35:19 2009 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC f...
Hopefully some cable tech reads this stuff and is able to point me in the right direction |
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cableguy
Premium
join:2009-01-20
| reply to agustaf4
You have 2 seperate issues causing 1 problem.
1) Amplifiers are not balanced correctly down your street or you have the incorrect tap value at the pole or main box. This is causing your 24db problem. 24db is down in the noise floor. So your modem can't hear anything so it looses sync.
2) The fluctuation part is being caused by a loose or bad connection anywhere from the main line down the street all the way to where your cable connects to the modem. When the connection becomes loose the modem says "oops we need more power" and jacks it's power output to 55db to compensate for the loss.
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GIT R DONE |
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agustaf4
join:2006-11-22
Ocala, FL
| thanks for the info, I'm having the line from the pole to my wall rethrown tomorrow (the old one looks fine to me ) but this is just to basically take out anything on my end out of the equation. Then I will get on them about the amp issue. I read something regarding that earlier where they say temperature causes this also and is why it is happening at a specified period of time. Right now i'm at 28 transmit power level, but sense there isn't any fluctuation the connection is solid and I'm getting the speed. What get's me is that they actually go up on the pole and plug they're meter up and state that everything looks good down the line |
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agustaf4
join:2006-11-22
Ocala, FL
| Quick question here. From the pole to my house which is next to my neighbors , same exact distance, my house new construction the guy ran rj11 from the pole to my box outside my wall, and from there is the rg6 which goes straight to the cable modem. My neighbor and everybody else I can pretty much see has standard rg6 from the pole. Neighbor just has tv so I can't ask about the internet service. Should I specify rg6 over 11 on my drop tomorrow. |
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cableguy
Premium
join:2009-01-20 | reply to agustaf4
If the distance between the pole and the outside of your house is less than 150ft then RG-11 cable will make little difference in the signal levels. The amplifier will make up for the small difference.
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GIT R DONE |
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agustaf4
join:2006-11-22
Ocala, FL | With a tap at where the wire enters the house the transmit power level went from 28 to 38 the receiver power level went from about 0.5 to 8.0
Receive Power Level
-9.7 dBmV
Transmit Power Level
38.5 dBmV |
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cableguy
Premium
join:2009-01-20
| Not sure i understand what you're saying here.. Are you getting 28 where the wire enters the house and 38 somewhere else? Also, what is between those 2 points? Splitters? Cable length? Any amps? Surge supressors? etc..
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GIT R DONE |
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agustaf4
join:2006-11-22
Ocala, FL
| From the pole to the house is a straight rg6. There at that point they placed a tap 9db I think. The cable from the pole is hooked to that and the rg6 which comes straight from the cable modem in the house. There is no splitter anywhere is a point to point. With that setup im getting downstream power level is 9 and upstream power level is 38.
With the tap taken out ( plugging the cable from the pole straight to the cable modem) I get around 0-1 downstream power level and upstream power level is 28-31. |
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cableguy
Premium
join:2009-01-20
| OK i see now.. So with the DC-9 you get 38db which is perfect. Earlier you were saying it was fluctuating down to 24db i think. The only way that is possible is if the DC-9 has a intermittent short or some amps down the street need looked at. But on the other hand you said it goes up to 55db which would indicate something loose or corroded. Still sounds like 2 seperate issues going on. Only other thing i can think is the modem transmitter circuitry is bad.
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GIT R DONE |
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agustaf4
join:2006-11-22
Ocala, FL
| The fluctuation part haven't seen it this weekend, but it did it friday with the dc-9 and without it. So on saturday we threw a whole new line from the pole to the house to see if that resolves it. Will know this week. Cause this issue happens typically during weekdays between 12-5 or so. that is what makes this weird. And the issue is the huge fluctuation that goes in the range of 24-53 or so. Happens sometimes as much as 10 times. The modem was replaced also last week. On the 23rd when the modem was replaced my old one had the transmit power level in the 29-32 range. When the new one was swapped for over a day it was in the 52 range and on the following day the 24th it dropped to the low 30's. And of course once the week began the whole fluctuation issue again |
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cableguy
Premium
join:2009-01-20
| Sounds temperature related being it happens during the hottest part of the day. Did they ever replace that main feeder where the tree fell? It could have a connector pulled out just enough that the temperature might affect it.
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GIT R DONE |
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