how to do incremental summation x(1)=x(1)+x(0), read 2 columns text file

[summerjune]

Hi,

I want to read the 2 columns text file and measure the pulse duration when the waveform amplitude is larger than zero. I want to sum all the pulse duration. However, I don't know how to do incremental summation x1=x1+x0 in a while loop. So, I try to use array summation outside of the loop., but I have problem in connecting the I/O. I have attached both text file and my VI file for reference.

Thank for your help.

[Jorge_Amaral]

Hello,

I didn't understand every thing that you said. But I've attached to files. Those where my approach that it's not solving your problem but I think that it can help. the code was made in labview 8.2. if you don't have it you can see the picture.

Best regards,

[summerjune]

Thanks Jorge.