[mythtv-users] Serial control of a TV

[Greg Newton]

>>
>> Possibly a dumb question, but were you using a straight or null-modem
>> cable? The Sharps require null-modem (owners of other models feel free
>> to correct me), as does your Optoma (pins 2 & 3 crossed, 5 straight is
>> all you'd need).
>
> It would depend on whether the TV set is configured as DTE (Data Terminal
> Equipment) or DCE (Data Communications Equipment).
>
> The original assumption was that a terminal (DTE) would want to talk to a
> modem (DCE), and could do so with a straight cable. A terminal wanting to
> talk to another terminal would be an unusual situation, and would thus
> require an adapter. Most computer serial ports (at least on PCs) are
> considered DTE, as they most often want to talk to a modem, multiplexer port,
> or similar communications gear.
>
> If the TV set was DTE, it would in fact require a null modem adapter or cable
> to talk to a terminal, so what you say makes sense.
>
> It would make more sense to me to consider the TV to be DTE, not DCE.
>


Yes, I was referring to the PDF manual for the Optoma - shows pin 2,
RXD, "IN" to projector which reads to me like DTE :-)

Cheers,
Greg |;^)