Thank you for information about the ringmodulation. It's perfect now. Other question: Is there an external that can do permutations of numbers. like: 1 2 3 4 2 3 4 1 3 4 1 2 and so on; and 1 2 3 4 5 2 4 3 5 1 4 5 3 1 2 5 1 3 2 4 and so on;
i would like to comput controlldata from permutations.
Thanks for help
Greetns Thomas