Timeout errors, modulation & some lag

[Nigel1971]

Having a few minor issues this past week and I can probably see why on the upstream sudden large errors on the top half of the log on downstream

Ch4 has been stuck on 32QAM for a few days even after a restart and won’t go back to normal, a few spikes on the graph and having some lag loading things up slower than normal.

Can you check for issues please, I’ll put the stats below.

3.0 Downstream channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

25	331000000	3.400002	38.605377	QAM256	25
1	139000000	2.099998	38.605377	QAM256	1
2	147000000	1.799999	38.983261	QAM256	2
3	155000000	1.900002	38.983261	QAM256	3
4	163000000	1.700001	38.983261	QAM256	4
5	171000000	1.500000	38.983261	QAM256	5
6	179000000	1.400002	38.605377	QAM256	6
7	187000000	1.400002	38.605377	QAM256	7
8	195000000	1.400002	38.983261	QAM256	8
9	203000000	1.400002	38.605377	QAM256	9
10	211000000	1.400002	38.983261	QAM256	10
11	219000000	1.500000	38.983261	QAM256	11
12	227000000	1.599998	38.983261	QAM256	12
13	235000000	1.700001	38.983261	QAM256	13
14	243000000	1.900002	38.605377	QAM256	14
15	251000000	2.099998	38.605377	QAM256	15
16	259000000	2.900002	38.605377	QAM256	16
17	267000000	3.200001	38.605377	QAM256	17
18	275000000	2.799999	38.983261	QAM256	18
19	283000000	3.000000	38.983261	QAM256	19
20	291000000	3.599998	38.983261	QAM256	20
21	299000000	4.099998	38.605377	QAM256	21
22	307000000	4.099998	38.983261	QAM256	22
23	315000000	3.900002	38.605377	QAM256	23
24	323000000	3.500000	38.605377	QAM256	24
26	339000000	3.400002	38.605377	QAM256	26
27	347000000	3.400002	38.983261	QAM256	27
28	355000000	3.599998	38.605377	QAM256	28
29	363000000	3.799999	38.605377	QAM256	29
30	371000000	4.099998	38.983261	QAM256	30
31	379000000	4.199997	38.605377	QAM256	31

3.0 Downstream channels

Channel Lock Status RxMER (dB) Pre RS Errors Post RS Errors

25	Locked	38.605377	1301	0
1	Locked	38.605377	87	0
2	Locked	38.983261	2601	0
3	Locked	38.983261	1828	0
4	Locked	38.983261	1481	0
5	Locked	38.983261	341	0
6	Locked	38.605377	3550	0
7	Locked	38.605377	1973	0
8	Locked	38.983261	985	0
9	Locked	38.605377	295	0
10	Locked	38.983261	3003	0
11	Locked	38.983261	0	0
12	Locked	38.983261	1	0
13	Locked	38.983261	1	0
14	Locked	38.605377	1	0
15	Locked	38.605377	0	0
16	Locked	38.605377	0	0
17	Locked	38.605377	0	0
18	Locked	38.983261	0	0
19	Locked	38.983261	0	0
20	Locked	38.983261	1	0
21	Locked	38.605377	3	0
22	Locked	38.983261	0	0
23	Locked	38.605377	0	0
24	Locked	38.605377	1	0
26	Locked	38.605377	0	0
27	Locked	38.983261	0	0
28	Locked	38.605377	1	0
29	Locked	38.605377	0	0
30	Locked	38.983261	0	0
31	Locked	38.605377	0	0

3.1 Downstream channels

Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)

159

96

4K

1880

QAM4096

759

3.1 Downstream channels

Channel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)

159

Locked

38

8.0

1313736392

0

[Nigel1971]

3.0 Upstream channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

1	46200000	37.520599	5120 KSym/sec	64QAM	11
2	39400000	37.270599	5120 KSym/sec	64QAM	12
3	53700000	38.270599	5120 KSym/sec	64QAM	10
4	60300000	38.270599	5120 KSym/sec	32QAM	9

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	US_TYPE_STDMA	0	0	1	0
2	US_TYPE_STDMA	0	0	0	0
3	US_TYPE_STDMA	0	0	0	0
4	US_TYPE_STDMA	0	0	3	0

[Natalie_L]

Hi Nigel1971, 

Thank you for reaching out to us here on the Community.

I am very sorry to hear you have been experiencing issues with your broadband service, we will do all we can to help. 

I have taken a look from our side and your Hub does appear to be flagging some error so I would like to run a few more checks.

Please check the purple envelope on the top right of this page for a message from me. 

Thanks, 

[Nigel1971]

Out of spec now, hopefully get this sorted on Friday.

3.1 Downstream channels

Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)

159

96

4K

1880

QAM2048

759

3.0 Upstream channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

1	46200000	37.020599	5120 KSym/sec	64QAM	11
2	39400000	36.770599	5120 KSym/sec	64QAM	12
3	53700000	37.770599	5120 KSym/sec	32QAM	10
4	60300000	37.770599	5120 KSym/sec	32QAM	9

[Nathan_B]

Thanks for your reply to this @Nigel1971, do let us know how this tech visit goes.

We will be happy to assist further if needed.

Regards

Nathan

[Nigel1971]

Had to move the appointment to Tues now as I needed the doctors on Friday.

3 channels now on 32QAM on upstream.

[Vikki_M]

Hi @Nigel1971

Please let us know how the visit goes today and if you have any further questions. 

[Sephiroth]

Is your coax cable tightly screwed in both ends? What you are reporting can be caused by a loose cable.

[Nigel1971]

He’s been, done a factory reset, he says it’s all in spec with power levels as up and down speeds and the cables are all tight. Also said the hub is quiet hot.

Stats here:

3.0 Downstream channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

25	331000000	4.800003	38.983261	QAM256	25
1	139000000	5.599998	38.605377	QAM256	1
2	147000000	5.199997	38.605377	QAM256	2
3	155000000	5.000000	38.605377	QAM256	3
4	163000000	4.699997	38.983261	QAM256	4
5	171000000	4.500000	38.983261	QAM256	5
6	179000000	4.300003	38.983261	QAM256	6
7	187000000	4.199997	38.983261	QAM256	7
8	195000000	4.099998	38.983261	QAM256	8
9	203000000	4.000000	38.983261	QAM256	9
10	211000000	4.199997	38.605377	QAM256	10
11	219000000	4.099998	38.983261	QAM256	11
12	227000000	4.199997	38.983261	QAM256	12
13	235000000	4.199997	38.605377	QAM256	13
14	243000000	4.400002	38.983261	QAM256	14
15	251000000	4.400002	38.605377	QAM256	15
16	259000000	4.900002	38.983261	QAM256	16
17	267000000	5.099998	38.983261	QAM256	17
18	275000000	4.599998	38.605377	QAM256	18
19	283000000	4.699997	38.983261	QAM256	19
20	291000000	5.000000	38.983261	QAM256	20
21	299000000	5.400002	38.983261	QAM256	21
22	307000000	5.400002	38.983261	QAM256	22
23	315000000	5.199997	38.983261	QAM256	23
24	323000000	4.900002	38.605377	QAM256	24
26	339000000	4.900002	38.983261	QAM256	26
27	347000000	4.900002	38.983261	QAM256	27
28	355000000	5.000000	38.983261	QAM256	28
29	363000000	5.400002	38.605377	QAM256	29
30	371000000	5.599998	38.983261	QAM256	30
31	379000000	5.599998	38.983261	QAM256	31

3.0 Downstream channels

Channel Lock Status RxMER (dB) Pre RS Errors Post RS Errors

25	Locked	38.983261	0	0
1	Locked	38.605377	0	0
2	Locked	38.605377	0	0
3	Locked	38.605377	0	0
4	Locked	38.983261	1	0
5	Locked	38.983261	0	0
6	Locked	38.983261	0	0
7	Locked	38.983261	0	0
8	Locked	38.983261	0	0
9	Locked	38.983261	0	0
10	Locked	38.605377	0	0
11	Locked	38.983261	0	0
12	Locked	38.983261	0	0
13	Locked	38.605377	0	0
14	Locked	38.983261	1	0
15	Locked	38.605377	0	0
16	Locked	38.983261	2	0
17	Locked	38.983261	0	0
18	Locked	38.605377	1	0
19	Locked	38.983261	1	0
20	Locked	38.983261	1	0
21	Locked	38.983261	1	0
22	Locked	38.983261	1	0
23	Locked	38.983261	0	0
24	Locked	38.605377	0	0
26	Locked	38.983261	1	0
27	Locked	38.983261	0	0
28	Locked	38.983261	0	0
29	Locked	38.605377	0	0
30	Locked	38.983261	0	0
31	Locked	38.983261	0	0

3.1 Downstream channels

Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)

159

96

4K

1880

QAM2048

759

3.1 Downstream channels

Channel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)

159

Locked

39

8.4

10037033

0

[Nigel1971]

The rest here:

3.0 Upstream channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

1	46200000	36.520599	5120 KSym/sec	64QAM	11
2	39400000	36.270599	5120 KSym/sec	32QAM	12
3	53700000	36.770599	5120 KSym/sec	32QAM	10
4	60300000	37.270599	5120 KSym/sec	32QAM	9

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	US_TYPE_STDMA	0	0	0	0
2	US_TYPE_STDMA	0	0	0	0
3	US_TYPE_STDMA	0	0	0	0
4	US_TYPE_STDMA	0	0	0	0

General Configuration

Network access	true
Maximum Number of CPEs	1
Baseline Privacy	true
DOCSIS Mode	3.1
Config file	69834ncxv9873254k;fg87dsfd;kf

Primary Downstream Service Flow

SFID	248
Max Traffic Rate	575000000
Max Traffic Burst	42600
Min Traffic Rate	0

Primary Upstream Service Flow

SFID	247
Max Traffic Rate	38520000
Max Traffic Burst	42600
Min Traffic Rate	0
Max Concatenated Burst	16320
Scheduling Type	bestEffort