Carrying out debugging of the prototype and bringing it to the parameters necessary for further work and corresponding to the terms of reference.

After creating a layout (prototype) of an electronic circuit, especially if it is an analog device, debugging of the prototype is required. 

Since each circuit has its own unique features of operation, it is necessary to comprehensively debug and check all modes of operation, including in extreme modes. Only successful operation of the assembled circuit in all modes can guarantee that the device will continue to be fruitful and work for a long time. 

This stage can last quite a long time and it all depends on the complexity of the device being developed (from 3 to 6 months) and is carried out by a group of qualified and experienced electronic engineers.

After the end of the debugging and testing process, including in extreme modes, you can be sure that the development process has ended successfully and the product can be launched into mass production.