FPGA NOT Calculating DC Mean

[Tim_C.]

I am using a 9215 with a CRIO 9012.   I have the iteration of the Single Point Timed Loop setup such that 1024 samples are taken in 1 second.

I have the AI channels fed into a DC-RMS FPGA calulation vi(s).   I DO NOT HAVE THE RESET WIRED on the DC-RMS vi.   

Do I have to set the reset true at the begining of every new data set?     I ask this because the vi is NOT returning valid data.     The vi is recieving data as it is toggling the output good flag to T

and there by setting the IRQ interrupt notifiying the CRIO host that it has a valid data set.  Plus I have another indicator setup to pass teh point by point data for debugging purposes.

If I do not need to set the reset to TRUE does anyone know why the DC - RMS FPGA vi would not provide data? 

Thanks

Tim C.

[George_P_Burdell]

Tim-

Is it possible to post a screen shot of your Configuration Window? 

Do you have windowing enabled?  If so, the calculated value will not be accurate until you reach the total number of measurement samples specified in your Configuration. 

Have you spoken with anyone at National Instruments about this post?  One of my colleagues had a very similar issue at the end of last week, and I was curious if that may have been you.