1ms Counter Loop / Event trigger from counters

[seascan]

Sorry, This message was intended for the LabView Forum!

Hi.  I'm pretty new to LabView so I'm am hoping this is an easy question:

I need to read the pulse signal from some reluctors (toothed wheels that pulse a signal with each passing tooth).  The amplitude of each pulse is above 2.2V so I was planning on using TTL counters.

I need to record the status of 5 counters with each increment of one of the counters  For the RPM and tooth count, I can do this with a 1ms timed loop.

Question:  Can windows successfully give a 1ms (accurate) timed loop?  I know this depends on how much I am doing inside the loop but, for now, I just need to read 5 counters and store the data with a timestamp.

Is it possible to make a counter throw an event?  If the counter is incrememented, can LabView be notified to then go off and handle a block of code?

Thanks for any help you can offer!

[Daniel-H]

Seascan,

Windows does seem to give a fairly accurate 1ms but extremely dependent on whats going on in the OS. Something as common as a windows update can skew this timing.  

LabVIEW does have a wait until next ms multiple vi to time your loop efficiently. 

Some counters do support DAQ events that LabVIEW can recognize but it is dependent on the device.

Daniel