A video signal termination detection system , comprising: an input configured to connect to a video driver that produces a video signal having a driver video signal type; an output configured to connect to a video receiver that operates with a receiver video signal type; a detection circuit connected between the input and the output and configured to detect the receiver video signal type of the video receiver and to output a detection signal; characterised in that the system further comprises: a conversion circuit configured to receive the video signal from the video driver and to convert the driver video signal type to that of the receiver if the driver video signal type is different from the receiver video signal type of the video receiver; a video interrupt switch (115; 201) configured to interrupt the video signal; a test voltage supply for supplying a test voltage to the system when the video signal is interrupted by the video interrupt switch, the supplying of a test voltage being controlled by at least one test voltage switch ; and a controller configured to control at least one of the video interrupt switch, the test voltage switch, and the conversion circuit based on a detection signal received from the detection circuit. an input configured to connect to a video driver that produces a video signal having a driver video signal type; an output configured to connect to a video receiver that operates with a receiver video signal type; a detection circuit connected between the input and the output and configured to detect the receiver video signal type of the video receiver and to output a detection signal; characterised in that the system further comprises: a conversion circuit configured to receive the video signal from the video driver and to convert the driver video signal type to that of the receiver if the driver video signal type is different from the receiver video signal type of the video receiver; a video interrupt switch (115; 201) configured to interrupt the video signal; a test voltage supply for supplying a test voltage to the system when the video signal is interrupted by the video interrupt switch, the supplying of a test voltage being controlled by at least one test voltage switch ; and a controller configured to control at least one of the video interrupt switch, the test voltage switch, and the conversion circuit based on a detection signal received from the detection circuit. a conversion circuit configured to receive the video signal from the video driver and to convert the driver video signal type to that of the receiver if the driver video signal type is different from the receiver video signal type of the video receiver; a video interrupt switch (115; 201) configured to interrupt the video signal; a test voltage supply for supplying a test voltage to the system when the video signal is interrupted by the video interrupt switch, the supplying of a test voltage being controlled by at least one test voltage switch ; and a controller configured to control at least one of the video interrupt switch, the test voltage switch, and the conversion circuit based on a detection signal received from the detection circuit. <EOS>