Q.1

The three basic steps for fixing a failure are ISOLATE, DIAGNOSE, and REPAIR.

  • True
  • False
Q.2

"Train" and "single" is the mode selection for a _______.

  • multimeter
  • logic probe
  • current tracer
  • logic pulser
Q.3

An internal logic gate that shorts to either +VCC or ground will cause the inputs or output to be stuck either LOW or FLOATING.

  • True
  • False
Q.4

The use of a logic probe may be improved through the use of a(n) ________.

  • logic clip
  • frequency counter
  • oscilloscope
  • current tracer
Q.5

A noise problem in a digital circuit is often called a glitch.

  • True
  • False
Q.6

The control of digital circuits is usually achieved with _________.

  • random pulses
  • clock signals
  • sophisticated gating
  • selected frequencies
Q.7

The time interval between the start of two consecutive pulses is called pulse repetition time.

  • True
  • False
Q.8

In order for a logic probe to operate, its red and black leads must first be connected to a ________.

  • logic clip
  • HIGH or TRUE signal
  • power source
  • logic pulser
Q.9

The ideal test equipment to use for locating shorts in digital circuitry is the ________ and _______.

  • logic probe, clip
  • logic pulser, logic probe
  • current tracer, logic pulser
  • current tracer, logic clip
Q.10

Which test equipment best allows a comparison between input and output signals?

  • an oscilloscope
  • a logic probe
  • a spectrum analyzer
  • a multitrace oscilloscope
Q.11

The time needed for a pulse to increase from 10% to 90% of its amplitude defines:

  • pulse width
  • propagation delay
  • rise time
  • duty cycle
Q.12

Which device would best aid in shorted track detection?

  • multimeter
  • current tracer
  • logic pulser
  • oscilloscope
Q.13

What is the next step after discovering a faulty gate within an IC?

  • repair the gate
  • resolder the tracks
  • replace the IC involved
  • recheck the power source
Q.14

The use of a multimeter with digital circuits allows the measurement of:

  • pulse width
  • voltage or resistance
  • current
  • pulse trains
Q.15

The use of triggered sweep when using an oscilloscope provides more accuracy in which area?

  • frequency
  • amplitude
  • graticule activity
  • timing
Q.16

A series of gradually decreasing sine wave oscillations is called:

  • ringing
  • slew
  • overshooting
  • undershooting
Q.17

The use of triggered sweep when using an oscilloscope provides more accuracy in which area?

  • frequency
  • amplitude
  • graticule activity
  • timing
Q.18

The determination of a digital signal's frequency and waveshape is best accomplished with which test equipment?

  • an oscilloscope
  • a multimeter
  • a spectrum analyzer
  • a frequency generator
Q.19

A logic probe is placed on the output of a gate and the display indicator is dim. A logic pulser is used on each of the input terminals, but the output indication does not change. What is wrong?

  • The dim indication on the logic probe indicates that the supply voltage is probably low.
  • The output of the gate appears to be open.
  • The LOW indication is the result of a bad ground connection on the logic probe.
  • The gate is a tri-state device.
Q.20

The results of internal IC failures will usually be noticed during the ______ phase of troubleshooting.

  • diagnostic
  • isolation
  • repair
  • final test
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