Re: cm1200 internet drop

I had same problem and solved. I don't know if anyone still having issues or not but if so then I could make a tutorial on how to fix this issue yourself with certain parts from amazon. It took allot of experimenting for me to get down to the bottom of the issues in which there was more than one but all in all trick is to get the values as perfectly balanced as possible via maximum signal clarity without loosing any stability via no more errors while squeezing out best possible performance. Meaning all zeros in correctables and non correctables zero errors period and took about a week or so of research and trail and error to get this cm1200 purring like a new engine/perfect performance. Because I sometimes run game servers I needed that perfect performance with zero connection drops. Obviously sometimes regular internet outages can occur even though mostly rare via damaged polls from accidents or issues on the other end but either way super nice to have the flawless performance I thought I was going to get via plug and play without any expertise but unfortunately I had to become an expert in order to fix the power balance issues which drove me mad as I couldn't fix one side without the other side becoming unbalanced till I had to get a college degree in order to learn all the required knowledge. All this newer tech ya really do have to get a college degree to get anything to work these days. Go back 13 years and I never had to read a manual to get anything working but these days I have no choice but to learn so much to operated/assemble anything. I just really miss when things used to be allot more simple with technology and all before touch screens came along but whatever either way point being I've finally put a collar around the performance of this modem and everything is now flawless. The reason I haven't shared any solutions is because most threads/forums I've read on the matter doesn't seem so recent so I guess most already solved their issues??? Highly doubtful as most solutions I found online didn't work for me and the said targeted values didn't work for me either meaning some values which were said to be okay definitely wasn't okay and I had to aim for different max values with combined parts and no splitters. I tried different brand splitters and they all f*cked me over but I used other things which seemed to work far better than normal splitters. I've spent hours of testing and trials and error till I finally did everything right in my own way. Once this modem is 100% stable with zero errors it's far better than ISP issued hardware in my experience. Because it's been a while since last reply I assumed a technician may have already fixed the issue on this thread. I usually like to try and fix things myself before relying on technicians which is what I did in my case. Couple years ago one of the lead technicians from my ISP even offered me a job lol but I declined. Guess I'll at least post my results:

Cable Connection

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Starting Frequency
0

Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 675000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Security Enabled BPI+
IP Provisioning Mode IPv4 Only ipv4Only(0)

Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency  Power      SNR Correctables Uncorrectables
1              Locked    QAM256        33    675000000 Hz   -1 dBmV     41.7 dB               0 0
2              Locked    QAM256         1     483000000 Hz   0.8 dBmV   43.7 dB                0 0
3              Locked    QAM256         2     489000000 Hz   0.8 dBmV   43.6 dB                0 0
4              Locked    QAM256         3      495000000 Hz   0.5 dBmV  43.5 dB                0 0
5              Locked    QAM256          4     501000000 Hz   0.8 dBmV  43.5 dB                0 0
6              Locked    QAM256          5     507000000 Hz   1 dBmV     43.4 dB                0 0
7              Locked    QAM256          6     513000000 Hz   0.7 dBmV  43.3 dB                0 0
8              Locked    QAM256          7     519000000 Hz   0.9 dBmV  43.4 dB                0 0
9              Locked    QAM256          8     525000000 Hz   1.1 dBmV  43.7 dB                0 0
10            Locked    QAM256          9     531000000 Hz   1.2 dBmV  43.9 dB                0 0
11             Locked    QAM256        10     537000000 Hz   0.9 dBmV 43.9 dB                0 0
12             Locked    QAM256        11     543000000 Hz   1.1 dBmV 43.9 dB                0 0
13             Locked    QAM256         12    555000000 Hz   0.8 dBmV 43.8 dB                0 0
14             Locked    QAM256         13    561000000 Hz   1.1 dBmV 43.9 dB                0 0
15             Locked    QAM256         14    567000000 Hz   1.1 dBmV 43.8 dB                0 0
16             Locked    QAM256         15    573000000 Hz   0.9 dBmV 43.7 dB                0 0
17             Locked    QAM256         16     579000000 Hz  0.7 dBmV 43.5 dB                0 0
18             Locked    QAM256         17    585000000 Hz   0.8 dBmV 43.5 dB                0 0
19             Locked    QAM256         18     591000000 Hz   0.5 dBmV 43.4 dB                0 0
20             Locked    QAM256         19     597000000 Hz   0.3 dBmV 43.2 dB                0 0
21             Locked    QAM256         21    609000000 Hz    0.4 dBmV 43.3 dB                0 0
22             Locked    QAM256         22     615000000 Hz   0.1 dBmV 43.1 dB                0 0
23             Locked    QAM256         23     621000000 Hz   0.3 dBmV 43.1 dB                0 0
24             Locked    QAM256         24    627000000 Hz    0.3 dBmV 43.1 dB                0 0
25             Locked    QAM256         26     633000000 Hz   0.1 dBmV 43 dB                   0 0
26             Locked    QAM256         27     639000000 Hz   0    dBmV 43 dB                   0 0
27             Locked    QAM256         28     645000000 Hz   0.2 dBmV 43 dB                   0 0
28             Locked    QAM256         29     651000000 Hz   -0.1 dBmV 42.8 dB               0 0
29             Locked    QAM256         30     657000000 Hz   -0.3 dBmV 42.8 dB               0 0
30             Locked    QAM256         31     663000000 Hz   -0.4 dBmV 42.6 dB               0 0
31             Locked    QAM256         32     669000000 Hz   -0.7 dBmV 42.6 dB               0 0
32             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 ATDMA                                     1 5120 Ksym/sec         18200000 Hz 43.8 dBmV
2 Locked ATDMA                                      2 5120 Ksym/sec        24600000 Hz 44.5 dBmV
3 Locked ATDMA                                      3 5120 Ksym/sec         31000000 Hz 45  dBmV
4 Locked ATDMA                                     4 5120 Ksym/sec         37400000 Hz 45.8 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

Downstream OFDM Channels
Channel Lock Status Modulation/Profile ID Channel ID Frequency Power SNR/MER 
1            Locked         0,1,2                           25          686000000 Hz -0.7 dBmV 41.9 dB 
2      Not Locked         0                                 0             0 Hz                 0    dBmV  0.0 dB 

Upstream OFDMA Channels
Channel Lock Status Modulation / Profile ID Channel ID Frequency Power
1 Not Locked 0 0 0 Hz 0 dBmV
2 Not Locked 0 0 0 Hz 0 dBmV

Extended Upstream Transmit Power
Enable Extended Upstream Transmit Power = off

Instead of splitters I used these https://www.amazon.com/dp/B0013L48XA?psc=1&ref=ppx_yo2ov_dt_b_product_details, https://www.amazon.com/dp/B0013L69D2?psc=1&ref=ppx_yo2ov_dt_b_product_details, https://www.amazon.com/dp/B0013L56OK?psc=1&ref=ppx_yo2ov_dt_b_product_details in my case based off my original numbers in order to keep everything below power of 2dbmV as any power above 2 caused errors to count I used 3 6db Attenuators to reduce downstream power by 18dbmv and without any splitters highest dbmv reading was 19.8dbmv with other channel readings fluctuating to slightly lower values. To reach close to 0dbmV as possible I subtracted 18dbmV from the original highest channel reading of 19.8dbmV using Attenuators instead of splitters as the splitters never gave me an error free experience although other brand splitters may have worked better. To put a leash on the upstream channel which kept going out of range/too high I used https://www.amazon.com/dp/B00ZONO3MO?psc=1&ref=ppx_yo2ov_dt_b_product_details to subtract 10dbmV from the Upstream channel as anything over 51dbmV on the upstream counted errors no matter how stable I got the downstream power. Without using something to lower the upstream power I had no way to balance everything. By subtracting 18dbmv from downstream power using 3 6db Attenuators the downstream power stabilized very nicely long as the upstream power was also taken down by 10 using the RRA1-10 Coaxial CATV 10db Return Amplifier. I brought several kinds of Attenuators or 2 10bd, 3 6db, and 2 3db so I could really play with the downstream numbers/experimented and found out if the downstream power hits up to or past 2dbmV then it will count errors no matter what I do but keeping it under 2dbmv gave the greatest results with zero errors. If ya reduce power even more it seems to still stay stable but with less performance/slightly higher pings during test so I reached closest to 2dbmv max without going over even a little. No more frustrating errors or connection drops. I hope I made it clear enough because I don't feel like writing a more organized tutorial and I didn't even feel like writing this one but I felt like I should at least make some effort to help others if possible seeing these kinds of issues keep popping up all over the internet with very little real solutions and it amazes me how some technicians from ISP's fail to fix the issue too many visits and some still have the issues but I didn't rely on advice from any technician. I also used to work in a computer repair shop years ago even though I doubt it helped me solve this issue but regardless once ya really know what your doing anything in this world can be fixed.