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Forum Discussion
CM500 Intermittent Connection
I just installed a new CM500 cable modem and the connection has dropped intermittently averaging once an hour and the modem reboots. Here is the error log after the most recent one:
you have too many Dynamic Range window violations.
Please post your power values.
Startup Procedure Procedure Status Comment Acquire Downstream Channel 753000000 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 20 753000000 Hz 0.4 dBmV 37.3 dB 67 146 2 Locked QAM256 2 597000000 Hz 2.1 dBmV 38.3 dB 47 217 3 Locked QAM256 3 603000000 Hz 2.1 dBmV 38.2 dB 35 157 4 Locked QAM256 4 609000000 Hz 2.1 dBmV 38.2 dB 62 174 5 Locked QAM256 5 615000000 Hz 2.1 dBmV 38.1 dB 40 223 6 Locked QAM256 6 621000000 Hz 2.2 dBmV 38 dB 44 160 7 Locked QAM256 7 627000000 Hz 2 dBmV 37.8 dB 55 184 8 Locked QAM256 8 633000000 Hz 1.9 dBmV 37.7 dB 62 174 9 Locked QAM256 10 645000000 Hz 1.8 dBmV 37.6 dB 76 206 10 Locked QAM256 11 651000000 Hz 1.5 dBmV 37.4 dB 91 163 11 Locked QAM256 14 669000000 Hz 1.3 dBmV 37.4 dB 87 202 12 Locked QAM256 15 675000000 Hz 1.3 dBmV 37 dB 71 173 13 Locked QAM256 16 681000000 Hz 1.3 dBmV 37.3 dB 54 186 14 Locked QAM256 17 687000000 Hz 1 dBmV 37.1 dB 73 171 15 Locked QAM256 18 693000000 Hz 1.2 dBmV 37.3 dB 49 162 16 Locked QAM256 19 747000000 Hz 0.6 dBmV 37.2 dB 26 121 Upstream Bonded Channels Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power 1 Locked ATDMA 2 5120 Ksym/sec 24200000 Hz 40.5 dBmV 2 Locked TDMA 1 2560 Ksym/sec 19400000 Hz 40.5 dBmV 3 Locked ATDMA 3 5120 Ksym/sec 30600000 Hz 37.8 dBmV 4 Locked ATDMA 4 2560 Ksym/sec 37000000 Hz 44.5 dBmV Note: The upstream channels have been going up and down in power, as well as locking/unlocking. This is like 10 minutes removed from the first data set:
Upstream Bonded Channels (Partial Service) Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power 1 Not Locked Unknown 2 0 Ksym/sec 24200000 Hz 0.0 dBmV 2 Not Locked Unknown 1 0 Ksym/sec 19400000 Hz 0.0 dBmV 3 Locked ATDMA 3 5120 Ksym/sec 30600000 Hz 44.5 dBmV 4 Locked ATDMA 4 2560 Ksym/sec 37000000 Hz 43 dBmV your line from ISP has problems. they would need to fix something at node level to make it work.