US Cable Support > Cable users > Modem signals

I just got a DOCSIS 3 modem from my ISP today and wanted to know if these are ok:

DCID Freq Power SNR Modulation Octets Correcteds Uncorrectables
Downstream 1 51 105.00 MHz -4.05 dBmV 34.63 dB 256QAM 688273476 0 0
Downstream 2 49 93.00 MHz -3.14 dBmV 35.08 dB 256QAM 678075543 0 0
Downstream 3 50 99.00 MHz -2.82 dBmV 35.25 dB 256QAM 673379292 131 28
Downstream 4 52 111.00 MHz -3.41 dBmV 34.63 dB 256QAM 702744865 4 0
Reset FEC Counters
Upstream

UCID Freq Power Channel Type Symbol Rate Modulation
Upstream 1 2 23.00 MHz 48.25 dBmV DOCSIS1.x (TDMA) 2560 kSym/s 16QAM

The modem has rebooted by itself once so far, and in the logs it shows a T3 timeout.

The signals changed a lot from what they were 3 days ago. Is it possible that the reboots are caused by them working on something?

DCID Freq Power SNR Modulation Octets Correcteds Uncorrectables
Downstream 1 52 111.00 MHz 4.83 dBmV 39.40 dB 256QAM 238218559 0 0
Downstream 2 49 93.00 MHz 5.41 dBmV 39.85 dB 256QAM 213105711 3 0
Downstream 3 50 99.00 MHz 5.49 dBmV 39.85 dB 256QAM 206547167 6 0
Downstream 4 51 105.00 MHz 4.55 dBmV 38.98 dB 256QAM 223274688 6 0
Reset FEC Counters
Upstream

UCID Freq Power Channel Type Symbol Rate Modulation
Upstream 1 2 23.00 MHz 48.21 dBmV DOCSIS1.x (TDMA) 2560 kSym/s 16QAM

Logs from today:
1/14/2013 16:44 84000700 5 RCS Partial Service;CM-MAC=00:1d:d3:**:**:**;CMTS-MAC=00:14:f1:**:**:**;CM-QOS=1.1;CM-VER=3.0;
1/14/2013 16:44 84000500 3 SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=00:1d:d3:**:**:**;CMTS-MAC=00:14:f1:**:**:**;CM-QOS=1.1;CM-VER=3.0;
1/14/2013 16:44 84020200 5 Lost MDD Timeout;CM-MAC=00:1d:d3:**:**:**;CMTS-MAC=00:14:f1:**:**:**;CM-QOS=1.1;CM-VER=3.0;
1/14/2013 16:44 82000400 3 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:1d:d3:**:**:**;CMTS-MAC=00:14:f1:**:**:**;CM-QOS=1.1;CM-VER=3.0;
1/14/2013 16:45 2417164307 6 MDD IP mode Set Mode=0;CM-MAC=00:1d:d3:**:**:**;CMTS-MAC=00:14:f1:**:**:**;CM-QOS=1.1;CM-VER=3.0;
1/14/2013 16:45 82000200 3 No Ranging Response received - T3 time-out;CM-MAC=00:1d:d3:**:**:**;CMTS-MAC=00:14:f1:**:**:**;CM-QOS=1.1;CM-VER=3.0;
1/14/2013 16:45 73040100 6 TLV-11 - unrecognized OID;CM-MAC=00:1d:d3:**:**:**;CMTS-MAC=00:14:f1:**:**:**;CM-QOS=1.1;CM-VER=3.0;

The dBmV should be -5 to +5 for optimal performance if I remember correctly. Looks great.

SNR: 32dB-50dB
Down stream Power Level: -5 to 5
Upstream Power: 32dBmV-50dBmV

»www.satelliteguys.us/threads/282···le-Modem
--
CompTIA Network+ Certified