Re: X10 AGC and Insteon

["Jeff Volp" <JeffVolp@xxxxxxx>]

In a system with both types of devices, my concern was to recover
sensitivity quickly enough following an Insteon transmission so that a
tailgating low-level X10 message could be detected.  Rather than averaging
the signal level over many X10 windows, each cycle is now processed
independently.  So sensitivity recovers immediately.  Overlapping messages
will most likely be logged as a collision.

Jeff

"Joerg" <notthisjoergsch@xxxxxxxxxxxxxxxxxxxxx> wrote in message
news:vBO%g.16009$GR.14536@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Hello Jeff,
>
>
> > The XTB-II does include a 120KHz LC filter, but it has sufficient
bandwidth
> > to pass both "sloppy" X10 and Insteon signals.  The XTB has been used to
> > boost Insteon signals, and I didn't want to eliminate that possibility.
> > Most of the noise isn't coming through that path anyway.  Line
transients
> > come through the 60Hz AC path that powers X10 transmitters plugged into
the
> > X10 input receptacle.
> >
>
> Well, since you said that Insteon signals mess with the threshold of the
> X10 side I assume that the uC can't keep them apart. If they come in
> concurrently and on the same line it really can't.
>
> Unless you can gate time slots the only other option I see is to provide
> a 120kHz filter plus demodulator and feed that into one port, then a
> 131kHz (or whatever Insteon uses) filter plus demodulator and feed it
> into another port.
>
> --
> Regards, Joerg
>
> http://www.analogconsultants.com