Multiple Frequencies measurements

[Bilal61101]

Hello... I am just a beginner in using labview and daq... can any help me out in measuring the feedback of 3 motors encoder ( i.e frequency).... basically I have to measure three different frequncies in real-time.

I am using usb_6009.

[ErikaB]

Hi Bilal61101,

Here is some documentation to help you get started with measuring multiple inputs. A search term that may be helpful for you is 'channel expansion.' You can view the inputs in NI MAX or LabVIEW; the documents below touch on both. 

How Do I Select More Than One NI-DAQmx Channel in LabVIEW?
http://digital.ni.com/public.nsf/allkb/A3A05920BF915F1486256D210069BE49 

Channel Expansion Explained
http://www.ni.com/white-paper/52634/en/ 

Here is another document that may it comes to actually taking in the frequency measurement (choose encoder on the link below).

How-To Guide for Most Common Measurements
http://www.ni.com/white-paper/7136/en/ 

One last document -- a lot of general questions about a device will be answered in the User's Manual.

NI USB-6008/6009 User Guide
http://www.ni.com/pdf/manuals/371303n.pdf 

Hope this helps. If you need further assistance, feel free to post specific questions so that the community can tackle them.

Thanks!