[Message Prev][Message Next][Thread Prev][Thread Next][Message Index][Thread Index]

Re: Would This Work?



"Dave Houston" <nobody@xxxxxxxxxxxx> wrote in message
news:44286261.283069093@xxxxxxxxxxxxxxxx
> Whether intentional or not, once the transceiver receives/decodes the RF,
it
> sends it to the powerline (after waiting for a positive ZC if unit 1 or
9).
>
> If on opposite phases, for units 1 & 9, one will lag the other by 1/2
cycle
> (1/120s or 8-1/3ms) which guarantees a powerline collision.
>
> I doubt you are able to discern an 8ms difference in the relays
activations.
> If you can detect a time gap, there are two possibilities. Either there is
a
> space/time loop (unidirectional, of course) between the transmitter and
one
> transceiver or one of them is receiving a weaker RF signal (or has a
weaker
> receiver) and cannot decode the first copy. The first copy (or copies)
will
> still affect the gain and threshold so that it might be able to decode a
> subsequent copy. Copies are sent at ~108ms intervals. As much as I like
the
> first scenario, I suspect the second scenario is more likely in that the
> second scenario doesn't require opposite phases.

(goes to check to settings and PIC codes)

There's a third explanation!!!  Hmmm, color my face red.  The module
controlling the powermid in the bedroom is an appliance module.  I just
moved the damn very heavy bed to make sure of the PIC version of the TM751
and miraculously, it morphed into an appliance module before my eyes!  Damn
that X-10!!!

I guess my item/location database was wrong.  Thanks for not calling me too
big of an idjit.  D'oh. The delay I heard was the TM751 receiving the RF and
clacking on and then putting B1 on the powerline via the appliance module.
That's a delay that's quite apparent.  Oy, do I feel dumb.

--
Bobby G.





comp.home.automation Main Index | comp.home.automation Thread Index | comp.home.automation Home | Archives Home