on 04-07-2021 15:46
Heya all, been having some weird issues lately, random restarts of modem etc and the other day when it happened I reset the error counters and ive gotten quite a lot but not sure if it means anything.
Downstream ChannelsLock Status Channel ID Frequency Modulation Rx Power RxMER Pre RS Errors Post RS Errors
Locked | 1 | 139000000 Hz | 256 QAM | 2.9 dBmV | 37.6 dB | 3107 | 284 |
Locked | 2 | 147000000 Hz | 256 QAM | 3.0 dBmV | 37.9 dB | 2299 | 296 |
Locked | 3 | 155000000 Hz | 256 QAM | 2.9 dBmV | 37.6 dB | 499 | 286 |
Locked | 4 | 163000000 Hz | 256 QAM | 2.8 dBmV | 37.6 dB | 656 | 291 |
Locked | 5 | 171000000 Hz | 256 QAM | 2.5 dBmV | 37.9 dB | 344 | 289 |
Locked | 6 | 179000000 Hz | 256 QAM | 2.7 dBmV | 38.3 dB | 312 | 283 |
Locked | 7 | 187000000 Hz | 256 QAM | 2.6 dBmV | 38.3 dB | 335 | 310 |
Locked | 8 | 195000000 Hz | 256 QAM | 2.7 dBmV | 38.3 dB | 328 | 306 |
Upstream ChannelsLock Status Channel ID Frequency Modulation Tx Power Mode Channel Bandwidth Symbol Rate
Locked | 2 | 53700000 Hz | ATDMA | 46.3 dBmV | 64QAM | 6400000 Hz | 5120 Ksym/sec |
Locked | 1 | 60300000 Hz | ATDMA | 46.8 dBmV | 64QAM | 6400000 Hz | 5120 Ksym/sec |
Locked | 3 | 46200000 Hz | ATDMA | 45.5 dBmV | 64QAM | 6400000 Hz | 5120 Ksym/sec |
Locked | 4 | 39400000 Hz | ATDMA | 45.0 dBmV | 64QAM | 6400000 Hz | 5120 Ksym/sec |
Downstream DS-1 DS-2 DS-3 DS-4 DS-5 DS-6 DS-7 DS-8
Frequency (Hz) | 139000000 | 147000000 | 155000000 | 163000000 | 171000000 | 179000000 | 187000000 | 195000000 |
Lock Status(QAM Lock/FEC Sync/MPEG Lock) | Locked | Locked | Locked | Locked | Locked | Locked | Locked | Locked |
Channel ID | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
Modulation | 256QAM | 256QAM | 256QAM | 256QAM | 256QAM | 256QAM | 256QAM | 256QAM |
Symbol Rate (Msym/sec) | 6.952000 | 6.952000 | 6.952000 | 6.952000 | 6.952000 | 6.952000 | 6.952000 | 6.952000 |
Interleave Depth | I=12 J=17 | I=12 J=17 | I=12 J=17 | I=12 J=17 | I=12 J=17 | I=12 J=17 | I=12 J=17 | I=12 J=17 |
Power Level (dBmV) | 2.95 | 2.95 | 2.90 | 2.80 | 2.59 | 2.75 | 2.72 | 2.60 |
RxMER (dB) | 37.36 | 37.94 | 37.36 | 37.36 | 37.94 | 38.26 | 38.26 | 38.26 |
Pre RS Errors |
3117 | 2303 | 499 | 656 | 344 | 312 | 335 | 328 |
Post RS Errors |
284 | 296 | 286 | 291 | 289 | 283 | 310 | 306 |
Upstream Burst Req(1) Init Maint(3) Per Maint(4) Adv Short(9) Adv Long(10) Adv UGS(11)
Modulation Type | 16QAM | QPSK | 16QAM | 64QAM | 64QAM | 16QAM |
Differential Encoding | OFF | OFF | OFF | OFF | OFF | OFF |
Preamble Length | 56 | 640 | 384 | 104 | 104 | 104 |
Preamble Value Offset | 652 | 0 | 0 | 716 | 716 | 716 |
FEC Error Correction (T) | 0 | 5 | 5 | 10 | 16 | 5 |
FEC Codeword Information Bytes (K) | 16 | 34 | 34 | 81 | 223 | 86 |
Maximum Burst Size | 0 | 0 | 0 | 3 | 255 | 255 |
Guard Time Size | 8 | 48 | 48 | 8 | 8 | 8 |
Last Codeword Length | Fixed | Fixed | Fixed | Shortened | Shortened | Shortened |
Scrambler On/Off | ON | ON | ON | ON | ON | ON |
on 04-07-2021 15:53
seen worse - there will always be a few - they could be historical reboot the hub to zero them and see if they rise again
apart from that are you having any actual problems - levels all look good
on 04-07-2021 15:55
I think on the hub2 there is a way of resetting these counters from the we interface.
on 04-07-2021 17:27
the modem last week had a hissy fit and kept rebooting, happened several times in a couple of days and I reset the counters then
on 04-07-2021 17:38
on 05-07-2021 03:48
That is nice to hear then, after a couple of days of a LOT of modem random reboots I was starting to get a tad worried.