Channels bonds

[Laryke]

Hello, I got this new modem and I have few problems, one is that hour time do not match, because of spring hour change (I do not think this is a problem), also I have few criticals and warning on event log about "Dynamic Range Window violation", "Started Unicast Maintenance Ranging - No Response received - T3 time-out;" Time Not Established

And the last one is that I have only 8 upstream bonded channels but only 4 of them are locked, I tried to talk to an Xfinity agent about this but it says it is modem problem.

[plemans]

Start with removing any amplifiers, signal attenuators, or splitters from the coax.
From there check the line for kinks, damage, moisture in the line.
Check the connectors for improperly made ends, foil touching the copper coax line, bad/old/cheap connectors, or corroded connections. Replace them if you do.
If you can, simply connect the modem right where the coax comes into the home. This prevents wiring in the home from being the issue. And some ISP’s charge if the wiring issue is in the home. So this helps prevent this.

Once you've done that. try it, if it doesn't help, take a screensnip of the cable connections page and event logs and post back here. 

[Laryke]

I tried some of the things you said and now I got this, the only warning, rest of them are notices

REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value

But I do not understand why 4 of them are not locked

Upstream Bonded Channels

Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power 1 Locked ATDMA 2 5120 Ksym/sec 16400000 Hz 41.5 dBmV 2 Locked ATDMA 3 5120 Ksym/sec 22800000 Hz 41.5 dBmV 3 Locked ATDMA 4 5120 Ksym/sec 29200000 Hz 41 dBmV 4 Locked ATDMA 5 5120 Ksym/sec 35600000 Hz 40 dBmV 5 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 6 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 7 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 8 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV

[plemans]

Its pretty standard for only 4 of the upload to lock. 

But it helps if you have the screen snips of upload/download the the logs. 

[Laryke]

Sorry for late answer, problems at work
Uncorrectables 0 for everyone

[plemans]

So the screensnips are just a snip in time of when you loaded the page. 

And your values are just a bit high. Not horribly high but enough that if the power fluctuates, you can end up getting the "dynamic power" warnings and t3 errors. 

You can try using a double or triple (start with double) splitter and put in line. that'll drop the power a little bit Hopefully enough to keep it in range. Just make sure to use a high quality one and good cables. 

[Laryke]

I have xfinity cable there any better than that? Also I think one head cable is bent. I have splitter but outside, should I get one for a double splitter inside?

[plemans]

I'm never trusting of outside splitters in the cable. 

I usually recommend trying to straight shot the cable into the home and splitting it once its inside. Helps keep moisture and the elements out of the cable. 

[Laryke]

Unfortunately I cannot do that