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PC compatible modular based diagnostic system

DC CAFC
  • US 5,659,680 A
  • Filed: 06/30/1995
  • Issued: 08/19/1997
  • Est. Priority Date: 06/30/1995
  • Status: Expired due to Term
First Claim
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1. A PC-based diagnostic system for diagnosing a unit under test, comprising:

  • a motherboard housed on a first circuit board;

    a backplane housed on a second circuit board and coupled to said motherboard through a first bus, control lines and power lines, said second circuit board including a first and a second I/O module connection port;

    a connection circuit housed on a third circuit board and connected to said backplane through a second bus; and

    a keyboard adapter circuit housed on a fourth circuit board and connected to said motherboard through a data and control bus, said keyboard adapter circuit providing for connection of a keyboard to said motherboard, said keyboard providing for operator-entered data to be sent to said motherboard;

    wherein said backplane board provides data and instruction transfer between a processor housed on said motherboard and one of a first I/O module connected to said first I/O module connection port on said backplane board, a second I/O module connected to said second I/O module connection port, and a third module connected to said connection circuit, at least one of said first and second I/O modules being coupled to said unit under test to enable transfer of data between said PC-based diagnostic system and said unit under test, said data being used by said PC-based diagnostic system to diagnose said unit under test,and wherein said first and second buses are coupled to each other via said backplane board to provide for transfer of information between said first, second and third I/O modules and said motherboard.

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