Re: Preventing Random X-10 Code interference...

[nobody@xxxxxxxxxxxx (Dave Houston)]

Sorry for the confusion but I try to generate in depth discussions on topics
like this in order to build a record that others can search when they
encounter the same thing.

You can help run this down by answering the specific questions.

1. Do you have any SmartHome *Linc two-way switches or modules?

2. Are you using ActiveHome (CM11A) or ActiveHomePro (CM15A)?

The fact that you see repeating patterns is evidence that the codes are not
random. That means they are probably coming from some X-10 transmitter
although the transmitter(s) may themselves be reacting to random noise.

Filters will not be effective against spikes and brownouts but should be
effective against noise in the 120kHz range.

"Michael G." <514mike@xxxxxxxxx> wrote:

>Hi guys!
>I just love these discussions.. they start off so easy to understand an
>then go right over my head.
>
>Dave, I do have one two-way device, but I shut down that circuit
>breaker, and the problem still continued.
>
>One thing I just noticed was that my old 17" Viewsonic CRT seems to be
>wreaking havoc with the system, too.  It's as if it somehow multiplies
>the problem with the LCD monitors.
>
>Now, I put AF120's on everything.
>
>This almost solved the problem.  Now I am getting stray codes about
>every 30 minutes (not every 2 minutes like before!) but you guys won't
>believe the pattern I am seeing.  You have to see my X10 Code Usage
>Grid to believe it!
>
>Maybe you can lead me in the right direction, because I noticed a VERY
>interesting pattern.
>
>When I look at X-10 Activehome's Historical Code Usage, as you may have
>seen, it lights up red for each stray code it receives.
>
>Instead of being red almost ALL over, as it was before I put AF120s
>everywhere, now, I am getting ONLY stray codes that are on numbers one
>or three!!
>
>In red, I see
>A1, A3, B1, B3, C1, C3, D1, D3, F1, G1, G3, G1, J1, K1, K3 etc.
>
>There were two others, actually, K6 and I8, but that's it.
>
>It's remarkable!
>
>Aside from those two stray codes, over the entire day, ONLY 1's and 3's
>have been broadcast!!
>
>What do you think about that?
>
>Is that indicative of something?
>
>It can't be a coincidence..
>
>At least I have an idea for a workaround...!
>
>On my three housecodes, M,N,O, I will leave 1 and 3 EMPTY!
>
>Silly workaround... I'd love to solve this!
>
>Any ideas?
>
>And thanks for the advice about the 6288 5A filters being more
>effective than these 15A ones.  Like my girlfriends always say, I just
>thought bigger was better......!
>
>These 1 and 3 codes are strange!
>Any ideas?  Have you seen that before?
>
>Thanks,
>
>Mike