10-24-2014 11:37 AM
My inputs:
Inputs are from some laser or some photo voltaic cells.
I want to do:
Triggering some counter/ timer by those inputs when they are active.
Reset the counter/ timer by those inputs when they are not active.
Extracting the time interval between this two events. (probably in millisecond)
Comparing all these time with each other to make some decision to some calculation
Making all events with a time stamp (real clock time).
I have:
NI cRIO-9012, Labview 12
10-24-2014 11:48 AM
What are the signals you are trying to measure? What voltage range? How fast?
Since you are using a cRIO, you will likely be able to just get away with a simple high speed DIO module (depends on what your signals look like) and do all of the counter stuff with the FPGA. Your FPGA just uses an interrupt or the like to tell the RT to time tag the event.
You really should give your local NI rep a call and have a nice long sit down with them. They are awesome at figuring out which equipment you will need for your given task.