----- Original Message -----
Sent: Tuesday, September 24, 2002 4:23
PM
Subject: RE: [ukha_d] IR Distribution
(
What Cable )
To
be honest, I didn't understand much of electronics talk here, but I got the
point: It should be fine in 99.99% cases.
So,
I'll just put the cables.
BTW,
what's the alternative?
What
should be the "proper" cable to put for IR distribution, which "always"
works
properly?
Cheers,
Nik
Nikola Kasic
wrote:
> So, all that difference is in theory then?
>
Nik
The same theory that says that you cant run cat 5 past power and
you can
only have x meters of patch cable and blah blah
However,
some of the gear does have open collector outputs so they are
more
prone
to noise then if it was a proper line drive, but they do this
so you
can
parallel detectors etc. Open collector directly driving a
blinker tho
will not be an issue as it would be like expecting
interferance to
light
an led etc.
The gear isnt designed to output or input a balanced
signal, so it is a
mis-match of cables, but with the lo-freq of IR, I
dont think you would
even get enough coupling between 2 wires of a pair
to have crosstalk issues.
I did have problems with running ir rx and
tx on the same cable with my
home-brew solution, but this was sorted
but
not having a drive for the
LED at the remote end. I suspect it was
power
related rather then
crosstalk between the
pairs.
http://www.automatedhome.co.uk
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