Generate pulse with PCI-6527

[Rafi2003]

HI,

Is it possible to use the PCI-6527 to generate a 10ms single pulse?

I've noticed that the set/reset time is 3ms (max).

1) If I do want to use it, can I define the pulse with the driver?  (I don't have the card yet, so I don't have any experience with it...)

2) What will be the accuracy of the pulse.?  (I don't care about the delay from the time the program gives the command until the relay actually activates.  What's important is only the output pulse.

Thanks

Rafi

[J_Thomas]

Hi Rafi2003,

To answer your questions you will be able to define the pulse with the driver, but you will have difficulty controlling the accuracy of the pulse with software timing.  The accuracy of software timed operations cannot be guaranteed because the operating system controls when each process is executed.  If your anti-virus needs to run, or any other program or process requests time on the CPU the operating system will execute each process in a non-deterministic fashion.

The ideal hardware for generating a 10ms pulse would be a board that has a counter, so that you can do hardwire timing. Unfortunately the 6527 doesn't have any counters on board, so you'll have to do it with software timing.