Keyboard for signal source, liquid crystal adjusting and testing device and adjusting and testing method

The invention discloses a keyboard for a signal source, a liquid crystal adjusting and testing device and an adjusting and testing method, and relates to the technical field of signal generator adjusting and testing. The adjusting and testing device comprises a basic platform. An upper bracket, a lower bracket and a liquid crystal bracket are arranged on the upper surface of the basic platform and are respectively provided with a keyboard plate, a key plate and liquid crystal to be adjusted and tested; the basic platform provides power and interfaces for the liquid crystal to be tested, the keyboard plate and the keyboard plate, the lower bracket and the liquid crystal bracket are connected with the upper surface of the basic platform through the bracket fixing device, the upper bracket is connected with the liquid crystal bracket through the bracket fixing device, and the bracket fixing device is fixedly connected with the surface of the basic platform. And the bracket fixing device is rotationally connected