HVIL signal generator and detector with loop diagnostics

A high voltage monitoring system comprising:

• a detector configured to communicate with a controller;
• and
• a generator connected to the detector and configured to communicate with the controller, the generator configured to generate a test signal according to a control signal provided by the controller, and provide the test signal to the detector, the test signal including a first state and a second state;
• wherein the generator is configured to provide the test signal to a test loop via the detector;
• the detector is configured to sense a first voltage, a first current, a second voltage, and a second current;
• the first voltage and the first current correspond to the test signal in its first state;
• and, the second voltage and the second current correspond to a returned version of the test signal in its first state that has passed through the test loop;
• wherein the detector is configured to sense a third voltage, a third current, a fourth voltage, and a fourth current;
• the third voltage and the third current correspond to the test signal in its second state;
• and, the fourth voltage and the fourth current correspond to a returned version of the test signal in its second state that has passed through the test loop.