Re: Signal Level Check for Xfinity Connected CM1200

Question

Hi can someone advise on whether the downstream signals look acceptable? Ive had occasional drops (few times per month) tied to SYNC Timing Synchronization Failure errors. I read that +/- 7 is the range but Im a littler higher on the channels output and not sure what the difference between the “Downstream OFDA Channels” at the bottom section vs the top section that is labeled “Downstream Bonded Channels” &nbsp;means. Bonded I assume are channels that the modem has locked and actively threading signals. Appreciate any guidance on the outputs respectively.&nbsp;

FURRYe38 · Answer

Way better now.&nbsp;
Have them check it all out.&nbsp;
Good Luck.&nbsp;

plemans · Answer

Now the power level is a bit to high for upstream. A cracked line would cause major issues. I'd hold off on more changes until they fix the line because you'll probably have to redo some things once you have a solid signal coming in to the home.&nbsp;

FURRYe38 · Answer

Power levels are too high:
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
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You have too many Correctables that should be zeros like the Uncorrectables.
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Please post a copy and paste of the modems event log page.https://kb.netgear.com/30008/How-do-I-view-or-clear-the-event-logs-on-my-NETGEAR-cable-modem-or-modem-router

AP747 · Answer

Thanks, Please see Attached is a snapshot of the log file&nbsp;

plemans · Answer

For only having an uptime of 12 hours, that's a lot of errors.&nbsp;
Check all your connections. If you've got a double splitter, try putting that in the line and ensure the barrels are tight.
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Re: Signal Level Check for Xfinity Connected CM1200