CBR750 random disconnects

Retired_Member

Apr 15, 2022

Thanks for the replies. Last night I checked behind the wall plate where the line is coming into the house. There was an old splitter and a kinked coax cable, which goes directly to the modem. I replaced the splitter and coax and I'm seeing a huge improvement in the power levels. Still not ideal, but much closer to normal ranges. So far no disconnects and the event log is clean, but I'll give it another few days to see how things look.

Startup Procedure

Procedure	Status	Comment
Acquire Downstream Channel	507000000 Hz	Locked
Connectivity State	Ok	Operational
Boot State	Ok	Operational
Security	Enabled	BPI+
IP Provisioning Mode	Honor MDD	honorMdd(4)

Downstream Bonded Channels

Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Correctables	Uncorrectable
1	Locked	QAM 256	2	489000000 Hz	-5.5 dBmV	38.6 dB	5	0
2	Locked	QAM 256	3	495000000 Hz	-6.0 dBmV	38.6 dB	0	0
3	Locked	QAM 256	4	501000000 Hz	-6.0 dBmV	38.9 dB	0	0
4	Locked	QAM 256	5	507000000 Hz	-6.2 dBmV	38.6 dB	0	0
5	Locked	QAM 256	6	513000000 Hz	-5.9 dBmV	38.9 dB	0	0
6	Locked	QAM 256	7	519000000 Hz	-6.2 dBmV	38.9 dB	0	0
7	Locked	QAM 256	8	525000000 Hz	-6.5 dBmV	38.9 dB	0	0
8	Locked	QAM 256	9	531000000 Hz	-6.9 dBmV	38.6 dB	0	0
9	Locked	QAM 256	10	537000000 Hz	-7.0 dBmV	38.6 dB	0	0
10	Locked	QAM 256	11	543000000 Hz	-6.7 dBmV	38.6 dB	0	0
11	Locked	QAM 256	12	549000000 Hz	-7.4 dBmV	38.6 dB	0	0
12	Locked	QAM 256	13	555000000 Hz	-7.2 dBmV	38.6 dB	0	0
13	Locked	QAM 256	14	561000000 Hz	-7.5 dBmV	38.6 dB	0	0
14	Locked	QAM 256	15	567000000 Hz	-7.2 dBmV	38.6 dB	0	0
15	Locked	QAM 256	16	573000000 Hz	-7.5 dBmV	38.9 dB	0	0
16	Locked	QAM 256	17	579000000 Hz	-7.7 dBmV	37.6 dB	0	0
17	Locked	QAM 256	18	585000000 Hz	-7.5 dBmV	38.6 dB	0	0
18	Locked	QAM 256	19	591000000 Hz	-8.0 dBmV	38.2 dB	0	0
19	Locked	QAM 256	20	597000000 Hz	-7.7 dBmV	37.6 dB	1	0
20	Locked	QAM 256	21	603000000 Hz	-8.4 dBmV	38.6 dB	0	0
21	Locked	QAM 256	22	609000000 Hz	-8.4 dBmV	37.3 dB	0	0
22	Locked	QAM 256	23	615000000 Hz	-8.7 dBmV	37.6 dB	0	0
23	Locked	QAM 256	24	621000000 Hz	-8.5 dBmV	37.6 dB	3	0
24	Locked	QAM 256	25	627000000 Hz	-8.4 dBmV	37.6 dB	19	36
25	Locked	QAM 256	26	633000000 Hz	-8.5 dBmV	37.6 dB	8	41
26	Locked	QAM 256	27	639000000 Hz	-8.7 dBmV	37.6 dB	8	43
27	Locked	QAM 256	28	645000000 Hz	-9.5 dBmV	37.6 dB	6	45
28	Locked	QAM 256	29	651000000 Hz	-9.9 dBmV	37.3 dB	6	45
29	Locked	QAM 256	30	657000000 Hz	-10.4 dBmV	37.3 dB	6	43
30	Locked	QAM 256	31	663000000 Hz	-10.7 dBmV	36.6 dB	10	41
31	Locked	QAM 256	32	669000000 Hz	-10.2 dBmV	36.6 dB	19	36
32	Not Locked	N/A	N/A	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	4	5120 Ksym/sec	16400000 Hz	40.5 dBmV
2	Locked	ATDMA	3	5120 Ksym/sec	22800000 Hz	40.8 dBmV
3	Locked	ATDMA	2	5120 Ksym/sec	29200000 Hz	41.0 dBmV
4	Locked	ATDMA	1	5120 Ksym/sec	35600000 Hz	41.8 dBmV
5	Locked	ATDMA	5	2560 Ksym/sec	40400000 Hz	42.0 dBmV
6	Not Locked	N/A	Unknown	0 Ksym/sec	0 Hz	0.0 dBmV
7	Not Locked	N/A	Unknown	0 Ksym/sec	0 Hz	0.0 dBmV
8	Not Locked	N/A	Unknown	0 Ksym/sec	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	3	37	690000000 Hz	-9.5 dBmV	37.7 dB	1108~2987	0	0	0
2	Not Locked	0	0	0 Hz	0.0 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	0	0	0 Hz	0.0 dBmV
2	Not Locked	0	0	0 Hz	0.0 dBmV

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