Forum Discussion

JohnnyM's avatar
JohnnyM
New Contributor II
3 years ago

Downstream channel power level concerns

I am unsure of how to read this information from the gateway. I have highlighted the difference between power levels. I am under the impression the difference between the highest and lowest should be 3. Can someone confirm? Also, is my correctable codewords a problem? I am getting an average packet loss of between 10-20% (smoke ping image https://ibb.co/BVyWCf0 ). 

I have been told the node is oversold and they are working on it but is there something else going on too? The speeds have gotten significantly worse since last weekend and my jitter is much worse also.

Downstream
Channel Bonding Value
Index
29
1
5
9
17
20
21
22
23
24
25
26
27
28
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
159
Lock Status
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Frequency
951 MHz
783 MHz
807 MHz
831 MHz
879 MHz
897 MHz
903 MHz
909 MHz
915 MHz
921 MHz
927 MHz
933 MHz
939 MHz
945 MHz
957 MHz
963 MHz
969 MHz
357 MHz
363 MHz
369 MHz
375 MHz
381 MHz
387 MHz
393 MHz
399 MHz
405 MHz
411 MHz
417 MHz
423 MHz
429 MHz
435 MHz
441 MHz
300000000
SNR
38.4 dB
40.3 dB
40.3 dB
40.1 dB
39.6 dB
39.0 dB
38.9 dB
38.7 dB
38.7 dB
38.4 dB
38.4 dB
38.5 dB
38.3 dB
38.3 dB
38.5 dB
38.7 dB
38.9 dB
39.6 dB
39.9 dB
39.9 dB
40.0 dB
40.1 dB
40.1 dB
40.2 dB
40.1 dB
40.0 dB
39.8 dB
39.9 dB
40.0 dB
40.0 dB
40.1 dB
40.2 dB
NA
Power Level
6.2 dBmV
8.3 dBmV
8.8 dBmV
9.1 dBmV
7.9 dBmV
6.8 dBmV
6.5 dBmV
6.3 dBmV
6.2 dBmV
6.0 dBmV
5.8 dBmV
6.0 dBmV
5.9 dBmV
5.8 dBmV
6.2 dBmV
6.5 dBmV
6.9 dBmV
3.5 dBmV
3.5 dBmV
3.6 dBmV
3.7 dBmV
3.8 dBmV
3.9 dBmV
3.9 dBmV
3.8 dBmV
3.7 dBmV
3.6 dBmV
3.4 dBmV
3.7 dBmV
3.7 dBmV
3.9 dBmV
4.0 dBmV
NA
Modulation
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
OFDM
Upstream
Channel Bonding Value
Index
1
2
3
4
5
Lock Status
Locked
Locked
Locked
Locked
Locked
Frequency
17 MHz
24 MHz
30 MHz
36 MHz
12 MHz
Symbol Rate
5120
5120
5120
5120
2560
Power Level
40.0 dBmV
40.5 dBmV
41.5 dBmV
41.5 dBmV
40.8 dBmV
Modulation
QAM
QAM
QAM
QAM
QAM
Channel Type
ATDMA
ATDMA
ATDMA
ATDMA
ATDMA
CM Error Codewords
Index
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
Unerrored Codewords
3158572906
1914700138
1914707132
1914713158
1914719035
1914724130
1914729601
1914735583
1914740559
1914745923
1914754292
1914760966
1914766170
1914773156
1914778537
1914784079
1914790467
1914795705
1914802002
1914808164
1914813906
1914819216
1914825556
1914831503
1914837169
1914843588
1914850893
1914856787
1914862973
1914868867
1914871031
1914873330
3158572906
Correctable Codewords
425276604
18
67
114
378
898
920
1165
1273
1240
1303
1298
1529
920
674
598
336
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
425276604
Uncorrectable Codewords
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

2 Replies

  • Bruce's avatar
    Bruce
    Honored Contributor III
    I am under the impression the difference between the highest and lowest should be 3

    There are lots of "rules of thumb" for signal levels, but only Cox can provide the correct range of specs.  I agree with widermouthopen.

    Correctables are fine because your modem is correcting codewords.  Uncorrectables, however, are so bad, your modem has to request a retransmission.  You have uncorrectables on all channels.  This is concerning; however, your SNR on the cable looks okay.  Any electronic devices in your house setting near the coax?

  • CrystalS's avatar
    CrystalS
    Former Moderator
    Hi Johnny,

    This appears as if you may need someone to look into your account. We would definitely be able to assist you with this. Please reach us on Twitter at @CoxHelp, visit us on Facebook, or email us at cox.help@cox.com. Please not personally. Provide us the name on the account with the complete service address with a link to this thread so we can get started.


    Crystal S.
    Cox Support Forum Moderator