Disclosed are various systems and methods related to improving the accuracy of resource usage counting of a metered resource by a computing device. The computing device disables interrupts used by the processor to count pulses received from a utility meter on respective first and second wires of a cable. A data level for the first wire attached to the one or more sensors of the computing device is detected and recorded. The data level indicating whether a pulse is presently being received on the first wire. The computing device then disconnects a common ground in the cable between the computing device and the utility meter, and initiates performance of a test of the cable. The computing device then restores the individual interrupts and the common ground in a defined sequence based upon detection of a pulse in one of the two wires.