[oopic] Re: oSerialH on ooPIC-R, TTL-Level or true RS232?

Just curious... How is the oooPIC-R able to communicate with my PC
using a serial cable with no inverter?

--- In oopic@yahoogroups.com, "rtstofer" <rstofer@...> wrote:
>
>
> > If the remote end is also 0-5V, then I would not need the inverter -
> > is that correct?
> >
>
> Right! The DB-9 output is inverted and the remote end would need to
> re-invert the signals.
>
> HOWEVER, a regular level shifter MAY accept the 0-5V signals (it
> usually will) and provide the inversion. Besides, it mistake-proofs
> the system. So just use the level shifter at the remote end just as
> though you were connecting to a PC.
>
> REMEMBER, you will need a NULL MODEM cable. Pin 2 on the first end
> connects to pin 3 on the second. Same for pin 3 on one first end
> connecting to pin 2 on the second. Pin 5 common on both ends. Both
> connectors to be DB-9 MALE.
>
> Richard
>

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