Testing and Troubleshooting problems
- 1. Which test equipment best allows a comparison between input and output signals?
Options- A. an oscilloscope
- B. a logic probe
- C. a spectrum analyzer
- D. a multitrace oscilloscope Discuss
Correct Answer: a multitrace oscilloscope
- 2. A series of gradually decreasing sine wave oscillations is called:
Options- A. ringing
- B. slew
- C. overshooting
- D. undershooting Discuss
Correct Answer: ringing
- 3. The ideal test equipment to use for locating shorts in digital circuitry is the ________ and _______.
Options- A. logic probe, clip
- B. logic pulser, logic probe
- C. current tracer, logic pulser
- D. current tracer, logic clip Discuss
Correct Answer: current tracer, logic pulser
- 4. The control of digital circuits is usually achieved with _________.
Options- A. random pulses
- B. clock signals
- C. sophisticated gating
- D. selected frequencies Discuss
Correct Answer: clock signals
- 5. Erratic or unexplained digital circuit activity is often due to _________.
Options- A. a glitch
- B. a random pulse
- C. clock frequency changes
- D. a change in slew rate Discuss
Correct Answer: clock frequency changes
- 6. "Train" and "single" is the mode selection for a _______.
Options- A. multimeter
- B. logic probe
- C. current tracer
- D. logic pulser Discuss
Correct Answer: logic pulser
- 7. The device that would best aid in open track detection is a(n) ________.
Options- A. multimeter
- B. current tracer
- C. logic probe
- D. oscilloscope Discuss
Correct Answer: current tracer
- 8. In order for a logic probe to operate, its red and black leads must first be connected to a ________.
Options- A. logic clip
- B. HIGH or TRUE signal
- C. power source
- D. logic pulser Discuss
Correct Answer: power source
- 9. The use of a logic probe may be improved through the use of a(n) ________.
Options- A. logic clip
- B. frequency counter
- C. oscilloscope
- D. current tracer Discuss
Correct Answer: logic clip
- 10. The results of internal IC failures will usually be noticed during the ______ phase of troubleshooting.
Options- A. diagnostic
- B. isolation
- C. repair
- D. final test Discuss
Correct Answer: diagnostic
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