rs-223 custom pattern

[zorandinho]

I need to create custom bit sequence over rs-232 line. Is there a way to make it with USB-232 (SN/778472-01)?

[RavensFan]

What exactly do you mean by a "customer bit sequence"?

Is it something that will fit within normal serial parameters of start bits, stop bits, and data bits?

[zorandinho]

No start, stop, parity bits. I need to send only bits I specify. 

Thanks

[RavensFan · Accepted solution]

Then no.

You need to use a DAQ card that has timed digital output.  You would build your bit pattern has a digital waveform.

The only other question is what voltage levels you would need for a high bit vs. a low bit.

[crossrulz]

UART RS-232 requires a start bit and at least 1 stop bit.  But this is usually handled by the transceivers.  They are typically transparent to you or the instrument's processor.