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