Oscilloscope Test
Oscilloscope



1. The switch labeled “Channel” has three settings: A, B, and A&B. This switch set to “A” would be appropriate when
a. The Source switch is set to “EXT.” b. You want Channel A to appear on the top of the screen, and Channel B on the bottom. c. You want to watch television channel A. d. You wish to study the signal from the cable plugged into the CH A jack.
Oscilloscope


2. Which of the following is usually the first step in measuring the amplitude of an input signal?
a. Set the TRIGGER to a Positive slope. b. Turn the X-Position and Y-Position fully counterclockwise. c. Turn the TIME/DIV knob until the trace is visible on the screen. d. Turn ON the oscilloscope.
Oscilloscope


3. The VOLTS/DIV knob is used to
a. Calibrate the voltage sensitivity of the oscilloscope. b. Make the wave from peak-to-peak fit in the display. c. Move the curve on the display up or down. d. Move the curve on the display left or right.
Oscilloscope


4. The TIME/DIV knob is used to
a. Make between one and two cycles of the wave visible in the display. b. Compensate for a positive or negative trigger setting. c. Adjust the display to measure the peak-to-peak value. d. Adjust the frequency of the input signal.
Oscilloscope


5. Which of the following knobs would you use to adjust the display to better determine the peak-to-peak amplitude?
a. Level b. Y-POS c. CHANNEL d. Source
Oscilloscope


6. After adjusting the display, you count 5½ grid squares from the bottom of the wave to the top of the wave. The TIME/DIV setting is “0.2 ms,” and the VOLTS/DIV setting is 50 mV. The peak-to-peak amplitude of this signal is
a. 275 mV b. 5.5 mV c. 10 mV d. 1.1 mV
Oscilloscope


7. Seeing the signal shown in the illustration, which of the following adjustments would improve the display to better measure the amplitude of the signal?
a. Adjusting the Level knob to more negative. b. Turning the VOLTS/DIV knob clockwise. c. Turning the TIME/DIV knob counter-clockwise. d. Sliding CHANNEL switch to the A position.
Oscilloscope


8. After adjusting the display, you count 9.2 grid squares between two consecutive peaks of the wave (left to right). The TIME/DIV setting is “10 ms,” and the VOLTS/DIV setting is 20 V. The period of this signal is
a. 10.8 sec b. 0.102 sec c. 0.092 sec d. 184 sec
Oscilloscope


9. The signal described in the previous question has a frequency of
a. 10.8 Hz b. 5.4 kHz c. 9.2 mHz d. 102 MHz
Oscilloscope


10. A signal with a very high frequency would require you to
a. Turn the TIME/DIV knob far clockwise. b. Turn the X-POS and Y-POS knobs almost all the way counter-clockwise. c. Change to Channel A. d. Adjust the VOLTS/DIV so the peak-to-peak amplitude fits within one grid square.
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