Hi Chandu,
For convex transducer the directional steering is not implemented in the software. It only works with linear probe.Change the Radio Button into LINEAR in "Probe selection" groupbox. The delays are calculated using the rule that the acoustic wave from every element should arrive at the same time to the desired focal point.
I dont't have the documentation for this application because I've wrote it for my own only use.
Regards,
Mariusz
