title: response time of the PCI-6602 Counter/Timer module
body: <p>I am using a NI PCI-6602 Counter/Timer to send TTL signals to another device in our lab. I have to send the signal every ~ 3 - 5 ms, but this time is not fixed (it depends on some other processes I am doing in my LabVIEW program), so I cannot work with a continuous waveform.</p>
  
  <p>Therefore, I have written a short test program to get familiar with the PCI-6602 (<a href="http://forums.ni.com/ni/attachments/ni/40/10027/1/ExampleResponseTime.vi" rel="nofollow">see vi</a>) and to see how I can generate a single pulse.</p>
  
  <p>If I generate a single pulse, it seems that I can do this only about all 14 ms (at least this is the time difference calculated with tick counts which is not very precise; but counting the pulses with a counter gives almost the same time). So it seems that the PCI-6602 has a too long response time for my application!</p>
  
  <p>Can somebody tell me if she/he makes the same observation? Or am I using the wrong vi/treating the PCI-6602 in the wrong way? If yes, what do I have to do to make my little test program and finally my main program faster?
  I would appreciate every help and comment!</p>