REVENUE METER HAVING PRECISION TIME CLOCK

摘要

An electrical energy meter includes a voltage digitizing circuit, a current digitizing circuit, a metering circuit, a clock circuit, and a source of externally-generated time standard information. The voltage digitizing circu it is operable to obtain analog line voltage information and generated digital line voltage information therefrom. Similarly, the current digitizing circui t is operable to obtain analog line current information and generate digital line current information therefrom. The metering circuit is operable to receive the digital line voltage information and the digital line current information and generate metering information therefrom. The clock circuit i s operable to generate calendar/clock information, said clock circuit having a calibration input for receiving precision time calibration information. The source of externally-generated time standard information is operably coupled to provide precision time calibration information to the calibration input o f the clock circuit.