DVR text input why?

Question

CCTV

The Jassun video surveillance system, which camera I don't know, is hanging on the street. Gives out a green image and asks for text, probably wants to be called beautifully. This is only on one camera out of a large number. Only a mouse was issued to control the entire system, it is not clear how to enter characters.

Answer 1

It looks like the on-screen menu of the camera, although technical parameters are most often configured there. It is most often called by a button on the camera itself, or by a joystick on the wire, again next to the camera. Why did it appear? The button was pressed with something (the camera turned / swung by the wind), or water got on the contacts of the button and the contacts closed, a menu appeared. In order to remove from the screen, in serviceable cameras, you need to press the button again.