Erroneous reading of Counter

[UBAP]

Hi,
I have a Pentium 4 machine that has a 1.8GHz processor speed with 1GB RAM and I am using PCI 6221: M-series card

I am trying to measure the speed of a small motor running at/around 20 RPM along with some analog signals. I clubbed the analog signals into one task. But I am somehow unable to read the speed properly. It is giving erroneous values.

[Note: The counter sees only two pulses per revolution]

I am attaching the entire program.

Help would really be greatly appreciated!! If you want to make any changes and upload it, that would be great!!

Thanks a lot!!
UBAP.

[Elijah_K]

I'm afraid I don't quite understand your application.  You said that you're using an analog input to measure the RPMs of a motor running at 20RPM and then described a problem with the counter task.  I'd be happy to help you, but if you could break your application down into smaller parts I would appreciate it.

If the analog input is reading incorrect values I encourage you to use the Measurement and Automation Explorer test panels ensure that your card is connected properly and reading good values.  I also recommend you to do the same for your counter input depending upon what exactly you're using it for.

A number of examples ship with LabVIEW that demonstrate how to setup analog input and counter tasks.  You can find these in the Example Finder (Help >> Find Examples)

With a little more information about your application and details about what each acquisition task is trying to accomplish I'd be happy to point you in the right direction.

[UBAP]

I am so very sorry. I did not intend to put the sentence "I clubbed the analog signals into one task." 
Anyways, I solved the problem.
It was more of a hardware problem.

Thanks a lot!
and I am sorry for the confusion.

UBAP.