A cable monitoring apparatus includes a housing having an input interface adapted to electrically connect to one end of a medical cable and an output interface adapted to electrically connect to a medical monitoring apparatus. Signal processing circuitry is incorporated within the housing for receiving a medical signal from the medical cable via the input interface and for selectively passing the medical signal to the medical monitoring apparatus via the output interface when in a first mode of operation, and has application software for selectively testing functionality of the medical cable when in a second mode of operation.
