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Forum Discussion
CM1000 Upstream Light Keeps Turning Amber
Hello all, I've been trying for weeks to resolve an issue with a Netgear ADT Hub. ADT has been out several times to no avail. I've tried everything but can't seem to locate the problem. The only...
Please post a copy and paste of the modems connection status page.
Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
Be sure there are no coax cable line splitters in the between the modem and ISP service box.
Be sure your using good quality RG6 coax cable up to the modem.
Be sure to power OFF the modem for 1 minute then back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853
FURRYe38 - Thanks for the info. All measures have been taken.
Please post a copy and paste of the modems connection status page. <- done, upstream status light is green at the moment.
Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly. <- check
Be sure there are no coax cable line splitters in the between the modem and ISP service box. <- check
Be sure your using good quality RG6 coax cable up to the modem. <- check, including drop line.
Be sure to power OFF the modem for 1 minute then back ON. <- done for 3" at a time (more than once during troubleshooting).Could you explain the potential issues associated with only locking one upstrem channel?
Cable ConnectionProcedure Status Comment Acquire Downstream Channel 429000000 Hz Locked Connectivity State OK Operational Boot State OK Operational Security Enable BPI+ IP Provisioning Mode Honor MDD IPv4 only Downstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power SNR / MER Unerrored Codewords Correctable Codewords Uncorrectable Codewords 1 Locked QAM256 45 429000000 Hz 5.9 dBmV 42.5 dB 372483566 0 0 2 Locked QAM256 1 783000000 Hz 4.1 dBmV 41.5 dB 371516651 0 0 3 Locked QAM256 2 789000000 Hz 3.7 dBmV 41.3 dB 371519622 0 0 4 Locked QAM256 3 795000000 Hz 3.6 dBmV 41.2 dB 371523720 0 0 5 Locked QAM256 5 807000000 Hz 3.4 dBmV 40.9 dB 371527756 0 0 6 Locked QAM256 13 855000000 Hz 3.2 dBmV 40.4 dB 371531393 0 0 7 Locked QAM256 15 867000000 Hz 2.6 dBmV 40.3 dB 371535192 0 0 8 Locked QAM256 16 873000000 Hz 2.4 dBmV 40.2 dB 371537538 0 0 9 Locked QAM256 17 879000000 Hz 1.9 dBmV 40.0 dB 371541932 0 0 10 Locked QAM256 18 885000000 Hz 1.6 dBmV 40.0 dB 371545577 0 0 11 Locked QAM256 19 891000000 Hz 1.9 dBmV 40.0 dB 371549210 0 0 12 Locked QAM256 20 897000000 Hz 1.9 dBmV 40.1 dB 371552939 0 0 13 Locked QAM256 21 903000000 Hz 1.8 dBmV 40.0 dB 371556871 0 0 14 Locked QAM256 22 909000000 Hz 0.4 dBmV 39.4 dB 371560435 0 0 15 Locked QAM256 23 915000000 Hz 0.2 dBmV 39.2 dB 371564258 0 0 16 Locked QAM256 24 921000000 Hz -0.5 dBmV 38.9 dB 371567949 0 0 17 Locked QAM256 29 951000000 Hz 0.0 dBmV 38.8 dB 371571668 0 0 18 Locked QAM256 33 357000000 Hz 4.3 dBmV 41.5 dB 371575009 0 0 19 Locked QAM256 34 363000000 Hz 4.7 dBmV 41.9 dB 371579060 0 0 20 Locked QAM256 35 369000000 Hz 4.7 dBmV 42.0 dB 371583092 0 0 21 Locked QAM256 36 375000000 Hz 5.2 dBmV 42.1 dB 371586216 0 0 22 Locked QAM256 37 381000000 Hz 5.2 dBmV 42.1 dB 371590388 0 0 23 Locked QAM256 38 387000000 Hz 5.4 dBmV 42.3 dB 371593852 0 0 24 Locked QAM256 39 393000000 Hz 5.3 dBmV 42.3 dB 371597570 0 0 25 Locked QAM256 40 399000000 Hz 5.5 dBmV 42.3 dB 371601336 0 0 26 Locked QAM256 41 405000000 Hz 5.4 dBmV 42.3 dB 371604917 0 0 27 Locked QAM256 42 411000000 Hz 5.8 dBmV 42.4 dB 371609227 0 0 28 Locked QAM256 43 417000000 Hz 5.6 dBmV 42.4 dB 371612731 0 0 29 Locked QAM256 44 423000000 Hz 5.9 dBmV 42.5 dB 371616029 0 0 30 Locked QAM256 46 435000000 Hz 6.2 dBmV 42.6 dB 371619666 0 0 31 Locked QAM256 47 441000000 Hz 5.8 dBmV 42.6 dB 371621537 0 0 32 Locked QAM256 48 447000000 Hz 5.9 dBmV 42.7 dB 371621341 0 0 Upstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power 1 Locked ATDMA 1 19300000 Hz 58.3 dBmV 2 Locked ATDMA 2 25800000 Hz 58.3 dBmV 3 Locked ATDMA 3 32200000 Hz 58.3 dBmV 4 Locked ATDMA 4 38600000 Hz 58.3 dBmV 5 Locked ATDMA 6 14500000 Hz 55.3 dBmV 6 Not Locked Unknown 0 0 Hz 0.0 dBmV 7 Not Locked Unknown 0 0 Hz 0.0 dBmV 8 Not Locked Unknown 0 0 Hz 0.0 dBmV Downstream OFDM Channels Channel Lock Status Modulation / Profile ID Channel ID Frequency Power SNR / MER Active Subcarrier Number Range Unerrored Codewords Correctable Codewords Uncorrectable Codewords 1 Locked 0, 1, 2, 3 159 300000000 Hz 9.3 dBmV 42.8 dB 1108 ~ 2987 405553628 61437364 412 2 Not Locked 0 0 0 Hz 4.5 dBmV 0.0 dB 0 ~ 4095 0 0 0 Upstream OFDMA Channels Channel Lock Status Modulation / Profile ID Channel ID Frequency Power 1 Not Locked Unknown 0 0 Hz 0 dBmV 2 Not Locked Unknown 0 0 Hz 0 dBmV Current System Time: Mon Aug 16 15:54:14 2021 System Up Time: 2:16:57 Interesting.
Firmware lised for my CM1000-1AZNAS for my ISP: V3.01.04
My firmware: V6.01.07
Does the ISP push these down? If not, how else could I have gotten there if I didn't do it myself?
Thanks!
Yes Only the ISP will push FW...
Are you using an amplifier on the coax line? Or a signal attenuator?
Based off the power of your downstream channels, your upstream is rather high. (high enough to cause issues)
Reason I ask is, when you're close to a hub, your downstream will be higher and the upstream tends to run lower.
If you're further away, you have lower downstream and higher upstream. Your numbers downstream indicate you're close to a hub but your upstream indicates your further away. so somethings a bit funky there.
Got a copy of the event logs?
plemans Great call. I do have an amplifier in the system, but since I cancelled cable a couple of years ago, I am wondering about its necessity. I will have to address that as soon as I am able.
I am learning (I think) much from your and Furry's posts. I intend to explore such things more when I have a bit longer window to address.
In short - I have the ADT hub up and running again. After hours spent re-routing, by-passing and exchanging out components, it is working again with the original hardware configuration. I am not certain that this was the fix, but Furry's reminder of the basics did cause me to think about the coax cables again and whether they were all firmly connected. I worked from the cable modem backwards re-tightening all connections. Thereafter, the upstream channel locks inceased and the recertification if the ADT hub went through. KISS principle strikes again (I believe).
To be sure there is more in the system to tweak. I'll provide more information in the log to address the power discrepancies later on and get back to you both. Thank you very much for you help to date.
