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Home ‣ Digital Electronics ‣ Interfacing to the Analog World See What Others Are Saying!
  • Question

  • A test system using the GPIB is being used to monitor a potentially dangerous crash test from a distance of 200 feet. The engineer decides to have you fabricate a special cable, rather than order one, since all the materials are on hand and the tests are already behind schedule. When the tests are run, the test system is erratic and the data is almost useless. What has gone wrong?


  • Options
  • A. The engineer is probably not using the correct data format for the specific instruments being used to collect the data.
  • B. The GPIB cable is too long; a bus extender should be used.
  • C. The cable should be shielded and properly grounded.
  • D. The tests themselves probably produced extraneous signals that confused the instruments, resulting in unusable data.

  • Correct Answer
  • The GPIB cable is too long; a bus extender should be used. 

    • More questions

    • 1. Which microprocessor has multiplexed data and address lines?

    • Options
    • A. 8086/8088
    • B. 80286
    • C. 80386
    • D. Pentium
      • Discuss
    • 2. One of the stages in a register consists of a latch.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. A VHDL component is a predefined logic function.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. L1 is known as ________.

    • Options
    • A. primary cache
    • B. secondary cache
    • C. DRAM
    • D. SRAM
      • Discuss
    • 5. All inputs to the MAX7000S device and all macrocell outputs feed the PIA.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. The 74154 is a 1-of-16 decoder. It accepts a 4-bit binary input.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. A 1-of-8 octal decoder has eight outputs and decodes an input of ________ bit(s).

    • Options
    • A. three
    • B. two
    • C. four
    • D. one
      • Discuss
    • 8. A four-line multiplexer must have as inputs four data inputs and two select inputs.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. Basically, a multiplexer changes parallel data inputs to a serial output.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. In a positive logic system, the HIGH level is usually represented by ________.

    • Options
    • A. 0 V
    • B. +1 V
    • C. +5 V
    • D. +9 V
      • Discuss

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