Electronic device

An electronic device, comprising:

• a signal generation circuit configured to generate a first output signal by adding a pulse signal to a first useful signal and to supply the first output signal to a first output terminal of the electronic device, and configured to generate a second output signal by adding the pulse signal to a second useful signal and to supply the second output signal to a second output terminal of the electronic device;
• a counter circuit configured to receive the first output signal from the first output terminal, detect first pulses in the received first output signal, and determine a number of the detected first pulses, and configured to receive the second output signal from the second output terminal, detect second pulses in the received second output signal and determine a number of the detected second pulses;
• and
• a detection circuit configured
• to register a first difference between the number of first pulses detected in a first time interval and the number of second pulses detected in the first time interval,
• to determine a second difference between the number of first pulses detected in a second time interval and the number of second pulses detected in the second time interval, and
• to indicate an error when the first difference and the second difference differ from one another by at least one predefined threshold value.