Dennis Crawley wrote:

> A VB application can activate DTR or RTS. Does anybody knows how can be
> measured the delay between DTR or RTS enabling and the real 1 or 0 in
> the data line?

You can feed it back (hardware connection) into CTS and measure the delay
between activating RTS and reading the change from CTS in software. 

Or you can write a software that feeds CTS through to RTS and measure the
delay between activating CTS and reading the change in RTS in hardware.

Both give you a worst case figure. Real figure is probably smaller, maybe
half.

Depending on the timing precision you need, VB may not be such a good
choice. It's not known for defined realtime behavior.

Gerhard

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