Hello,
Thank you for your inquiry regarding Bessel Functions. I understand that you would like more information regarding how the Bessel Function is defined. This information can be found in the Glossary section of the LabVIEW help file. One solution is to read the documentation of this function and see if this helps. I have attached a screenshot of this for you.
I hope these resources help. Let me know if I can further assist you.
Shea C.
Applications Engineering
