Test meters

  • US 4,949,274 A
  • Filed: 10/31/1988
  • Issued: 08/14/1990
  • Est. Priority Date: 05/22/1987
  • Status: Expired due to Term
First Claim
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1. A test meter capable of testing and displaying a plurality of parameters and of reporting the results in a plurality of formats, comprising:

  • first selector switch means responsive to an electrical signal on an electrical conductor, for changing the report format of the test meter through a plurality of report formats in a predetermined sequence;

    second selector switch means responsive to an electrical signal on an electrical conductor for changing the test parameter formats of the test meter through a plurality of parameter formats in a predetermined sequence;

    an independently locatable and movable probe having an extended multi-conductor lead detachably connected to the test meter;

    one of the conductors in the multi-conductor lead being coupled to said first selector switch means and another one of the conductors in said multi-conductor lead being coupled to the second selector switch means;

    said probe having a first control switch coupled to send an electrical signal on said one conductor in said lead so as to operate said first selector switch means to change to the report format of said test meter;

    and, said probe having a second control switch coupled to send an electrical signal on said other conductor in said lead so as to operate said second selector switch means to change the test parameter format of said test meter.

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