afaik DLM doesnt monitor SNRM in that respect. Its triggers are MTBE and MTBR.
My own line frequently oscilates often more than that, but DLM only takes action when the Err Secs get too high. If you look back on my line since before xmas you will see it oscillated betwen 6.3 & 4.8 dB for a few weeks. MDWS smooths out the spikes because of averages, but live mapping showed the spikes where every minute.
I've seen several other lines oscilate worse than that and it never takes any notice.
The oscilations dont even take broadstairs below 5dB. However DLM can and does take an interest in SES.
That one difference I notice between mine and broadstairs. Both may oscilate, Both can have large error spikes. BUT generally speaking my SES are typically < 1/4 of the E/S rate. Practically every one of Broadstairs E/S has been an SES.
All I can do is refer back to this post
herenow the US snr had practically died (3.2) surely this is a fault somewhere or large source of interference ?
That wasn't there when I last looked. * It doesnt look good
*I'd originally looked at about 9am.. only noticed because it was on my MDWS screen when I'd gone to look at my own stats to see if there were any clues why I'd had no broadband for 5.5hrs last night.