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Signal distribution system hybrid relay controller/driver

  • US 4,763,124 A
  • Filed: 03/06/1986
  • Issued: 08/09/1988
  • Est. Priority Date: 03/06/1986
  • Status: Expired due to Fees
First Claim
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1. In a signal distribution system for selectively connecting an equipment under test to a test instrument, at least one control means adapted to communicate with a central processing means for controllably activating a corresponding switching matrix means, the switching matrix means having a plurality of relays, the central processing means communicating with the control means via a plurality of bi-directional and uni-directional data lines, the control means comprising:

  • a plurality of driving means connected to the bi-directional data lines and the switching matrix means;

    a decoding means connected to the driving means and the central processing means, the decoding means receiving data from the central processing means for selectively activating a particular one of the plurality of driving means for receiving instruction data from the central processing means, the particular driving means, upon being selectively activated, actuating chosen relays in the switching matrix means to controllably connect the equipment under test to the test instrument;

    means connected to the switching matrix means for sensing the statuses of the relays therein, the sensing means further being connected to the bi-directional data lines for communicating the statuses of the relays to the central processing means;

    whereby the central processing means compares the statuses of the relays which have been actuated with statuses of the relays which should be actuated to obtain a feedback as to whether or not the correct relays have been actuated.

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