Re: IR problems

["rb_ziggy" <rb.lists@xxxxxxxxxxxx>]

Keith

If you have the receiver in a tube to prevent oblique stray IR hitting it,
you may still be getting IR from the screen bouncing off an opposite wall
straight back into the receiver.  I had a very similar problem with a
plasma screen.

I fixed it by attenuating the IR reaching the receiver by sticking a piece
of brown plastic packing tape over the receiver and then colouring it with
a permanent black marker.  Sounds a bit bizarre but I picked this tip up
elsewhere and tried it out and it worked for me.  The tape alone didn't do
enough and you can experiment with the marker.  I found that it didn't
noticably affect the strong remote control IR (from a Pronto in my case
which is pretty powerful) but knocked out the interference from the screen.

Regards

Richard

--- In ukha_d@xxxxxxx, "Keith Finnett" <groups@...> wrote:
>
> Unfortunately not....i'm wondering if this is something that will have
to be
> lived with.... L
>
>
>
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
> Phil Harris
> Sent: 11 April 2009 14:55
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] IR problems
>
>
>
>
>
>
>
>
> > Well the IR receiver is on top of an LCD screen, but now in a
tube to
> > protect it from stray IR and it's still happening as I thought
much the
> > same.
> >
> > In terms of the feedback loop how would you suggest I test for
this?
>
> Are there any IR emitters in the room? If there are then mask them off
to
> stop them emitting out into the room or cover up the receiver
completely...
>
> Phil
>
>
>
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