Test operation of electronic demand register

  • US 4,598,248 A
  • Filed: 04/12/1984
  • Issued: 07/01/1986
  • Est. Priority Date: 04/12/1984
  • Status: Expired due to Term
First Claim
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1. Apparatus for providing an operating mode and a test mode for an electronic demand register of an electric meter, said electronic demand register including a digital processor of the type having a volatile memory, comprising:

  • means for non-volatile storage of at least a maximum demand, a remainder of a demand time period and a plurality of programmed contants upon entering said test mode;

    means for retaining at least said programmed constants in said volatile memory upon entering said test mode whereby said digital processor is enabled to use said programmed constants during said test mode;

    means for presetting a demand time period and at least one of a demand accumulator and a maximum demand storage for initiation of a test; and

    means for erasing said demand accumulator and said maximum demand storage and for restoring said maximum demand, said remainder of a demand time period and said programmed constants stored in non-volatile memory into said volatile memory upon entering said operating mode from said test mode whereby demand metering resumes from zero accumulated demand for said remainder of said demand time period before beginning to accumulate a demand over a full demand time period.

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