to sample your signal continuously to determine the pulse width in software
would go to the limits of the system. Consider a PC with 1GHz clock rate,
then you would have only 1000 clocks per sample (this includes context
switches, interrupt handling, etc.). Might be possible, but would slow down
your QNX system extremely.
I consider it a better solution to have a little external circuit that does
the pulse width measurement. Like a counter that has a 1MHz clock and is
triggered by your pulse. Then, you could use an I/O board to read in the
counter value into your program. But I’d need more information about the
specifics of your application.
For some drivers for I/O boards please check our http://qrts.com
If I understand correctly, you are using Windows NT right now? How do you do
it under Windows NT.
I you want, write me a personal e-mail in German…
another german user
“Daniel Radeck” <email@example.com> wrote in message
i have a little problem with a Labwindows/CVI Project.
Under win nt 4.0 would i measure a puls width and need a sample rate from
MHZ (minimal) .
my question is , what solution with qnx haved.
excuse me for my bad english
a german user