reading excel file in ascii format

[hood1]

i am reading excel file with 2 columns and plotting it to a graph.i would like to use AT-MIO-16XE-50 interface card and send these 2 colums to osilloscope.
when i use function generator vi, i can send only one signal to the osillocope but i want to send 2 signal by superposition one signal(column) to the other signal(coloumn). how it works. i am the labview beginner. one example please.thanks

[chilly_charly]

I guess that you simply want to separate the data stored in a 2-column array, and use them independently.
If so, connect the output of "Spreadsheet string to array" to an "Index array". Then wire a "0" constant to the SECOND index. You get the first column as output. Then expand the "index array" icon by pulling down its bottom handle. A second box will appear, where you will get the second column (thats the magic of auto-indexing".
Have a look to the image below.
Let me know if you need more help.