Kitz Forum
Broadband Related => Broadband Technology => Topic started by: biohead on July 29, 2012, 06:35:11 PM
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I'm on an FTTC connection (although I don't think it's particularly important in this case).
After quickly looking at how my line has performed today, I saw this huge spike in ping times just before 6pm.
(https://forum.kitz.co.uk/proxy.php?request=http%3A%2F%2Fwww.thinkbroadband.com%2Fping%2Fshare-thumb%2F99838f7c94965bb3e393353d62e7acde-29-07-2012.png&hash=9820f91f22f8fc161691478626796121dce292f7) (http://www.thinkbroadband.com/ping/share/99838f7c94965bb3e393353d62e7acde-29-07-2012.html)
I'm assuming that the spike is caused by when I went out to mow the lawn quickly whilst the rain held off - the times match up. Now when I was on ADSL, I remember the snrm would plummet to less than 1 whilst the electric mower was used, and although the sync would hold - I couldn't transfer any data at all. Am I right in presuming this is the same thing (I wasn't able to check the line stats whilst mowing).
What actually causes this though?
And is it related to a brief comment the Openreach installer made whilst doing the install: Whilst trying to get the physical line stats, he tried to get an earth from a nearby radiator. Whilst it was earthed, it wasn't a very good one. He then tried with an earth directly from a socket - which gave a similar outcome. He just mentioned it must be a bad earth area in general.
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I'm assuming that the spike is caused by when I went out to mow the lawn quickly whilst the rain held off - the times match up. Now when I was on ADSL, I remember the snrm would plummet to less than 1 whilst the electric mower was used, and although the sync would hold - I couldn't transfer any data at all. Am I right in presuming this is the same thing (I wasn't able to check the line stats whilst mowing).
If it is the same electric lawn mower then, yes, I believe you are correct. Perhaps you could set yourself up to use Bald_Eagle1's graphing scripts before the lawn requires another trim?
What actually causes this though?
Arcing from the electric motor's carbon brushes, where they make contact with the commutator, would be a source of localised RFI. Earthing would not come into it because, if I remember correctly, such devices as electric lawn mowers, strimmers, etc, are all doubly insulated and do not use an earth connection.