Creating an AIF File with ExcelMicrosoft's Excel® spreadsheet is almost universally available on Windows; many die designers use it to create their die netlist.
Save as Text (Space Delimited)
You cannot send the .xls file directly to the die reader. AIF is a text format. When you
are complete with your spreadsheet and have saved it in .xls, you should save it
again, this time as formatted TXT (space delimited).
You can see how the output should look by opening the text file in notepad: