Hi all,
I am getting SNR downspikes (from 6 dB down to zero then straight up again i.e. a big noise), most often at 4pm ... but not always at 4pm and the 4pm one does not happen every day.
It does not hang around long enough to affect ES/hr, FEC or CRC rates but the DLM does not like it and sometimes dibs my speed down. See attached capture as an example.
My IP profile seems to be 'sticky' it is very reluctant to 'learn' back up again even after prolonged low noise periods - so the IP profile ratchets down over time, possibly due to this noise effect? About once every 6 months I have to call the ISP and get the IP profile reset to a sensible level.
Anyone who knows what a pain in the botty it is to get BTW to reset an IP profile will understand that I have a vested interest on tracking down this otherwise minor noise issue, just in case it is the cause of my IP profile ratcheting down.
I have checked that there are no timed events like heating coming on at 4pm. No swarms of unsuppressed mopeds riding by at 4pm etc.
No neighbours really, so its probably me.
What are the other usual suspects to check??
Any suggestions gratefuly received.