After Spending 4 hours at my house they decided to install a this is what they did......and now the modem doesn't reset when uploading large files.......
here the videos of them doing the work etc this is an update from them not caring about me
Startup Procedure Procedure Status Comment Acquire Downstream Channel Locked Connectivity State OK Operational Boot State OK Operational Configuration File Security Enabled BPI+
Downstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables 1 Locked QAM256 62 585000000 Hz 4.3 dBmV 40.4 dB 0 0 2 Locked QAM256 61 579000000 Hz 4.4 dBmV 40.3 dB 0 0 3 Locked QAM256 63 591000000 Hz 4.1 dBmV 39.9 dB 0 0 4 Locked QAM256 64 597000000 Hz 3.9 dBmV 40.1 dB 0 0 5 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 6 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 7 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 8 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
Upstream Bonded Channels Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power 1 Locked TDMA 1 2560 Ksym/sec 34000000 Hz 44.2 dBmV 2 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 3 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 4 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV ... Before Downstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables 1 Locked QAM256 63 591000000 Hz -1.9 dBmV 39.7 dB 333 0 2 Locked QAM256 61 579000000 Hz -1.5 dBmV 39.9 dB 226 0 3 Locked QAM256 62 585000000 Hz -1.7 dBmV 40.4 dB 265 0 4 Locked QAM256 64 597000000 Hz -2.0 dBmV 39.9 dB 226 0 5 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 6 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 7 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 8 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
Upstream Bonded Channels Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power 1 Locked TDMA 2 2560 Ksym/sec 23008000 Hz 51.7 dBmV 2 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 3 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 4 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
What is funny is that my upstream power value is 51.2 dBmV in Cleveland, OH and my connection is rock solid stable.
I've been told that the maximum upstream power value depends upon the plant.
I've also been told that at least from what I can remember vaguely is that D3 services are less tolerable to signal issues. When you arent bonding channels its a bit more tolerable. I have seen my US signal go to 56 before with no issues, been told the limit was 58.
I've also been told that at least from what I can remember vaguely is that D3 services are less tolerable to signal issues. When you arent bonding channels its a bit more tolerable. I have seen my US signal go to 56 before with no issues, been told the limit was 58.
Then if that's the case, TWC will have to do some work on their plant in my area to have upstream bonding work.
Why I say that is because I can see my cable node, I know where it is. I've traced the cable from the node to the tap that I'm connected to and it's a very short distance. Probably less than 1000 feet. Still I have an upstream power value of 51.2 dBmV.
Then if that's the case, TWC will have to do some work on their plant in my area to have upstream bonding work.
Why I say that is because I can see my cable node, I know where it is. I've traced the cable from the node to the tap that I'm connected to and it's a very short distance. Probably less than 1000 feet. Still I have an upstream power value of 51.2 dBmV.
It's normal to have higher upstream power near the node or distribution amplifier, cause the first taps of a cable line are high value taps. It's the way a cable plant is designed. Node or distribution amplifier = high value taps = high upstream (high value tap) and = high donwstream power (less cable loss cause you are near the amplifier). End of line = low value tap = low upstream power = low downstream power (more cable loss).
51 dBmV upstream power near a node or distribution amplifier is ok, but if you have only 40, that's means there's something wrong (return level too high at the node or amplifier). 51 dBmV on a end of line isn't ok, there's something wrong...
It's normal to have higher upstream power near the node or distribution amplifier, cause the first taps of a cable line are high value taps. It's the way a cable plant is designed. Node or distribution amplifier = high value taps = high upstream (high value tap) and = high donwstream power (less cable loss cause you are near the amplifier). End of line = low value tap = low upstream power = low downstream power (more cable loss).
51 dBmV upstream power near a node or distribution amplifier is ok, but if you have only 40, that's means there's something wrong (return level too high at the node or amplifier). 51 dBmV on a end of line isn't ok, there's something wrong...
I never thought about it that way but it makes perfect sense... you must work for the industry
The signal level immediately from the node is always high so the node will be a able to feed everyone to the end of the trunk. So to achieve the 'target' level for the first customer in the line (people closer to the node) a high level attenuation tap should be used but this attenuation is not unidirectional (upstream and downstream) it affects both signals the same way so the modem to compensate for the added attenuation it has to increase its power output (upstream).
This is not a sign of a problem just the specific characteristics of being first in line, conversely the last customer in the trunk will have a greatly diminished signal to play with so a very low attenuation tap will be required but since he is already at the end of the trunk the modem will have to use more power to reach the node.
Got it right?
EDIT: What would happen if another amplifier is needed/added to feed another trunk? Will the last customer of the first trunk cause problems on the second amplifier?
So the real problem is your home network. Your problem is most likely caused from ingress on your other outlets being combined. By them putting your modem on a separate drop your house wiring network is not tied to the modem anymore and cannot effect it in anyway. Now if it was extremely bad it can effect everyone off your tap and even node but doesn't sound like its that bad or they would have seen it with other modems dropping in your area. I would check all your outlets that are active and make sure all connections are tight and that there are no unterminated active cables laying around anywhere.
The signal level immediately from the node is always high so the node will be a able to feed everyone to the end of the trunk. So to achieve the 'target' level for the first customer in the line (people closer to the node) a high level attenuation tap should be used but this attenuation is not unidirectional (upstream and downstream) it affects both signals the same way so the modem to compensate for the added attenuation it has to increase its power output (upstream).
I had to think about this one. At first I thought attenuation being equal it wouldn't matter. Either you have attenuation from cable length, or you have artificial attenuation added from a high value tap.
Then I realized that cable-length attenuation impacts higher frequencies (where the downstreams are) more than low frequencies (where the upstreams are).
That means if attenuation is added to each tap that "targets", say, 0db at 500mhz, the upstream will skew stronger (lower modem output levels needed) as you go further away from the amp/node.
The signal level immediately from the node is always high so the node will be a able to feed everyone to the end of the trunk. So to achieve the 'target' level for the first customer in the line (people closer to the node) a high level attenuation tap should be used but this attenuation is not unidirectional (upstream and downstream) it affects both signals the same way so the modem to compensate for the added attenuation it has to increase its power output (upstream).
I had to think about this one. At first I thought attenuation being equal it wouldn't matter. Either you have attenuation from cable length, or you have artificial attenuation added from a high value tap.
Then I realized that cable-length attenuation impacts higher frequencies (where the downstreams are) more than low frequencies (where the upstreams are).
That means if attenuation is added to each tap that "targets", say, 0db at 500mhz, the upstream will skew stronger (lower modem output levels needed) as you go further away from the amp/node.
I had to think about this one too But there is another variable that we havent taken into consideration and that is the variable gain in the receiver (downstream) This number can take any value (gain) between -15 to +15 dBmV. I don't work in the cable industry so I don't know the details but from my experience I would extrapolate this sub-system as some sort of AGC (automatic gain control) ... well sort of.
The optimum value for the 'operating level range' as some motorola documents call it is 0dBmV, this means (to me) that the modem can compensate better in case the signal is too strong or too weak. The 'operating level range' can fine tune the receiver's gain in case the tap value is not an exact match. I'm sure taps come in standard values »www.taiwantrade.com.tw/t ··· S/198003
quote:Tap values available:11dB to 35dB in 3dB steps
So if a cable guy needed a 12.5db tap he would have to choose a 11db or a 14db tap. Unmatched taps could influence upstream power output too.
Another thing, the cable types used in comercial and HAM radio like in Richard's site (the link that you posted) are not the same used by CATV. I don't know the specifics or the type of cable but from what I've seen it looks like a ~1 inch in diameter hardline type of cable with a thick ~1/8 in. aluminum jacket. »www.therfc.com/hardline.htm I'm sure that this type of cable has a much better RF characteristics and lower attenuation than those used in HAM radio.
There was a time years ago we had the whole house wired up for TWC triple play which was four rooms, digital phone and at the time 2 year contract for 20/2 service here in san antonio. a couple of years went by without RR in the house. fast forward to now, we have only 50/5 ultimate package through a SBG6580 modem. It is coming off the tap through a double side male connector thats grounded and from there it goes to a splitter labeled broadband.
If I take the coax line off the splitter and connect it to the house side of that double sided male connector will the modem work better? Will that be considered direct connect???
OP that is beautiful ping I'm over by culebra and callaghan and ping never been lower than 50.
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But there is another variable that we havent taken into consideration and that is the variable gain in the receiver (downstream) This number can take any value (gain) between -15 to +15 dBmV. I don't work in the cable industry so I don't know the details but from my experience I would extrapolate this sub-system as some sort of AGC (automatic gain control) ... well sort of.