Device for determining a parasitic resistance in video endoscopes

A device for determining a parasitic resistance of an electronic circuit for a video endoscope, the device comprising:

• a potential-determining device;
• a printed circuit board external from the potential-determining device;
• and
• a potential-determining conductor arranged on the printed circuit board, wherein a first end of the potential-determining conductor is connected to the potential-determining device via a contact on the printed circuit board, the potential-determining conductor extending in a longitudinal direction on a surface of the printed circuit board,
• a circuit component connected to a second end of the potential-determining conductor, wherein a predefined potential of the potential-determining conductor is dependent on the circuit component;
• wherein the potential-determining conductor is arranged along a path in the longitudinal direction on the surface of the printed circuit board next to a reference potential conductor,
• the potential-determining device is configured to determine a parasitic resistance between the potential-determining conductor and the reference potential conductor based on a deviation of the predefined potential of the potential-determining conductor;
• the potential-determining conductor is surrounded on at least two sides, in a direction orthogonal to the longitudinal direction, by the reference potential conductor on the surface of the printed circuit board;
• and
• the reference potential conductor is at a voltage other than zero.