As the transmitter can now generates a PPM signal, I can use it as a "ppm Joystick" to any sofware simulator that take USB-PPM cable as input. For instance crrcsim or Phoenix, which are 2 really good sims, the first one for glider, and Phoenix for helico/planes. For crrcsim, the USB-Futaba connector cable works well, and for Phoenix there is a specific USB cable for Futaba. One both cables, it just need to connect the ground and the PPM signal. Using a simulator program like that, it a very good test for the coder, as there is no intermediate which may fail and demonstrates pretty well response times, and test any kind of input combination.