Multifunction DAQ card

[WASIF]

I am simply generating the sine wave through USB DAQ card ( 6218) but it takes a long time to update ( nearly 5 sec) to be appeared on the analog output. On the other hand when I generate a simple DC value, it takes the less time. Can anyone tell me that how I can improve its refresh(Update) time so that it appears immediatly at the output?

[xdaf]

What do you use to generate your output signal? A labview program? Can you post the vi?

[WASIF]

VI is attached.

[John_P1]

I would try using one of the non-regeneration examples that uses the lower-level DAQmx API.  The DAQ Assistant is doing quite a few things behind the scenes that shouldn't be necessary for what you need to do. 

Try the attached vi which is based off of the shipping example Cont Gen Voltage Wfm-Int Clk-Non Regeneration.vi.

[WASIF]

Thanks a lot dear. This program improves the update rate a lot. Please can you send me the similar program to read the fast varying analog voltage with this device ?

[John_P1]

Hi WASIF,

The analog input example that I would start with can be found in the LabVIEW Example Finder.  From LabVIEW, navigate to:

Help >> Find Examples... >> Hardware Input and Output >> DAQmx >> Analog Measurements >> Voltage >> Cont Acq&Graph Voltage-Int Clk.vi

Best Regards,