Quote:
Originally Posted by chambohambo
Thanks for taking the time to respond to my post.
The technician changed the splitter and isolator and also put new connectors at the end of the cables. For the past few weeks it has been stable. So I am guessing the splitter or isolator was the cause of the problem.
How do these power levels look below?
Downstream Channels
Lock Status Channel ID Frequency Modulation Rx Power RxMER Pre RS Errors Post RS Errors
Locked 2 259000000 Hz 256 QAM 10.2 dBmV 39.0 dB 7515 578
Locked 1 251000000 Hz 256 QAM 10.0 dBmV 38.3 dB 29132 609
Locked 3 267000000 Hz 256 QAM 10.3 dBmV 38.6 dB 3899 580
Locked 4 275000000 Hz 256 QAM 10.3 dBmV 38.3 dB 2067 584
Locked 5 283000000 Hz 256 QAM 10.3 dBmV 39.4 dB 622 618
Locked 6 291000000 Hz 256 QAM 10.2 dBmV 39.4 dB 548 548
Locked 7 299000000 Hz 256 QAM 10.5 dBmV 39.4 dB 589 579
Locked 8 307000000 Hz 256 QAM 10.3 dBmV 39.4 dB 564 558
Upstream Channels
Lock Status Channel ID Frequency Modulation Tx Power Mode Channel Bandwidth Symbol Rate
Locked 35 27400000 Hz ATDMA 37.3 dBmV 64QAM 6400000 Hz 5120 Ksym/sec
NotLocked 0 0 Hz 0 dBmV 0 Ksym/sec
NotLocked 0 0 Hz 0 dBmV 0 Ksym/sec
Locked 33 45800000 Hz ATDMA 39.0 dBmV 64QAM 6400000 Hz 5120 Ksym/sec
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Downstream is a little high but if it's not giving grief I wouldn't worry about it. I didn't think it was a network SNR fault (I used to be a VM network engineer). Seems like it was like you said a faulty splitter/Iso or maybe a bit of braiding around the "stinger" on the cable. If you get anymore grief first thing to try would be a 6db wideband attenuator to get your levels closer to spec, but upstream levels are much more important than downstream (for stability).