Contributor
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23 Messages
Splitter Amp Question
I just bought a new DOCSIS 3.1 modem (MB8600) and I'm getting the power levels below (which appear to be on the high side). I have not experienced any disconnnects yet, but I have noticed 2-3 T3 timeouts per day.
My outside line runs directly into Xfinity installed Commscope amp in my house, (the modem is connected to the non-powered port (-6db) on the amp). I was thinking about adding a two-way splitter before the amp. I would run the cable modem off one of the splits, and then connect the other part of the two-way splitter to the amp for the TVs in my house.
As an FYI, the modem I had prior to this one was a DOCSIS 3.0 (Netgear CM600), and was operating with upstream power levels around 51, so I'm not sure if the issue is the modem, the line or a combination of both. Thanks in advance for any assistance or thoughts.
| Channel |
Lock Status |
Channel Type |
Channel ID |
Symb. Rate |
Freq |
Pwr |
| 1 |
Locked |
SC-QAM |
1 |
5120 |
36.5 |
56.8 |
| 2 |
Locked |
SC-QAM |
2 |
5120 |
30.1 |
56 |
| 3 |
Locked |
SC-QAM |
3 |
5120 |
23.7 |
55.5 |
| 4 |
Locked |
SC-QAM |
4 |
5120 |
17.3 |
55 |
xfindmv
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23 Messages
5 years ago
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EG
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5 years ago
Can't see your pics. Since you are a new poster, they need to be approved by a Forum Admin. That could take some time. In the interim, you could try hosting them at one of those free third-party pic hosting sites like Imgur or Photobucket and post the link to them here.
Or copy all of the text of the status page and paste it into the body of your next post here.
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xfindmv
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23 Messages
5 years ago
Thanks, just posted them manually.
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EG
Expert
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111.7K Messages
5 years ago
The upstream power is out of spec. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, latency problems, and the un-bonding of channels.
See if anything below applies. If not, you'll need a tech visit.
In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test
If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.
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