can daq 6035e,or 6024e used to count pulse train

[nnio]

i need to count two digital pulse train coming from an encoder, whose frequency keeps changing. the encoder is a typical feed back from servomotor

[rgharrison]

Hi,

Both of those DAQ boards can measure digital pulse train frequencies using the counters. These cards can support 2-pulse encoder measurements on DIO6 and DIO7. This means that if there is a rising edge on Channel A the counter increments and a rising edge on Channel B decrements the count. You can also set the counter application for frequency measurement and that will measure the frequency of the pulse train on the line. These cards also have 2 such counters.

There are many LabVIEW and CVI examples demonstrating this. If you search the site for position or encoder measurements there should be some example programs for you. Hope that helps.

Ron