Patent ID: 9354268
Filing Date: 2016-05-31
CPC Classification: G01R

Claim Text:
1. A system comprising: main control circuitry coupled to a pair of conductors; a plurality of monitoring circuits, each coupled to a load and the pair of conductors, each of the monitoring circuits having a plurality of modes of operation, wherein only one of the plurality of modes of operation of each monitoring circuit can be a diagnostic mode at any given time, and each of the plurality of monitoring circuits can be in a disable mode or an operating mode at any given time, and wherein the disable mode disconnects the load associated with the monitoring circuit from the pair of conductors and the operating mode connects the load associated with the monitoring circuit to the pair of conductors; wherein the main control circuitry is configured to transmit a monitoring signal having known magnitude and frequency parameters and to receive a signal from one or more of the monitoring circuits in response; and wherein each of the plurality of monitoring circuits is configured to change an operational parameter to as a function of the mode of operation of that monitoring circuit in response to the monitoring signal.