Need help with the question marks
Posted: Fri May 20, 2022 8:28 pm
Need help with the question marks
Table 5 RMS Voltage VAC (AC component) DC Voltage VDC ? ? 13. Reverse the meter leads and measure the voltages again. 14. Record the voltages in Table 6. Table 6 RMS Voltage VAC (AC component) DC Voltage Voc ? ? 15. Return the function generator DC offset control to the OFF position. 16. In many AC circuits the sine wave patterns that may be measured across the different circuit components have the same period but do not rise and fall at exactly the same time. Waveforms of this type are "out of phase" or "phase shifted". This difference in time is most easily determined by measuring the distance between the two waveforms as they cross the ground reference. This section illustrates one method of measuring this "phase difference" which is normally stated in degrees. 17. Assemble the circuit in Figure 2 on your breadboard. GFG-8210 GODDDDD WW 3.3 0.01 l O Oscilloscope FIGURE #2
Set the oscilloscope so it is edge triggered on a rising slope using "CH 1" as the trigger source. The scope should be in the "Auto" trigger mode. 18. "CH 1" and "CH 2" of the scope should both be displayed. Both channels should have zero volts positioned in the center of the screen. The "SCALE" control should be adjusted to give a timebase of 50 us/div. Adjust the "TRIGGER" "LEVEL" control for O volts. Set the scope to trigger at the left side of the screen. Adjust the "CH 1" "SCALE" control for 1 volt/div. 19. Set the signal generator to deliver a 2.0 kHz sine wave (period T = 500us) with a maximum (peak) voltage of 3 V (NO OFFSET). You should have two sine waves on the screen. Set an appropriate volt/div setting for "CH 2". 20. Adjust the "SCALE" and the "HORIZONTAL POSITION” controls to position the waveforms so the time shift At between the zero-crossover points of the waveforms can be measured with the most accuracy. Record AT and the sec/div setting used to measure it. Use the time AT to calculate the phase shift angle. ? SEC/DIV = ? ? Phase Angle 0 = (AT/T) x 360° = AT = CH 1 Leads CH 2 or CH 1 Lags CH 2 Circle the correct answer ? ?
Name and explain the purpose of the main controls of the Horizontal, Vertical and Trigger sections of a digital oscilloscope scope. r. Post lab Explain what is meant by "In Phase" and "Out of Phase” when reading two waveforms on the screen of an oscilloscope. ? You are training a classmate in how to use the Tektronix TDS210 Oscilloscope to measure a 2kHz sine was with Vp=6V. Outline the steps you would cover to ensure they can learn how to obtain the measurement.
7. Connect the BNC to clip lead from the function generator to a probe connected to "CH 1" of the scope. Adjust the function generator to deliver a 10 V peak to peak 100 Hz sine wave. Calculate the RMS value of this sine wave (Vac). Record your answer in Table 4. 8. Adjust zero volts for "CH 1" one line below the centre of the screen. Switch the coupling mode for "CH 1" between the AC and DC. The waveform should stay in the same position when switching between the two coupling modes. Set the Vertical Scale to 2 V/div and the Horizontal Scale to 2.5ms/div. 9. While "CH 1" is in the DC coupling mode pull out the "DC OFFSET" control on the function generator. Adjust the offset so the positive peak of the waveform moves up 3 volts. This effectively places a 3V DC supply in series with the sine wave. The sine wave is now "riding on", or superimposed or centered on this 3V DC level. 10. Change the coupling mode back to AC. You should notice the waveform drop lower on the screen. How much does the waveform drop and why? Record your answer in Table 3. ? Table 3 11. Calculate the total RMS value for the waveform using RMS voltage from procedure 7 and the DC voltage from procedure 7. Record your answer in Table 4. Table 4 Procedure 7 VAc = ? .? VRMS = v.c + V) (Vbc = 11 12. Connect the DMM across the function generator output. Measure the effective value of the AC component of the waveform by selecting the "ACV" function. Activate the 2nd DMM display by pressing the “2nd" button. Select the “DCV" function to measure the average value or DC component of the waveform. Record these voltages in Table 5.
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Set the oscilloscope so it is edge triggered on a rising slope using "CH 1" as the trigger source. The scope should be in the "Auto" trigger mode. 18. "CH 1" and "CH 2" of the scope should both be displayed. Both channels should have zero volts positioned in the center of the screen. The "SCALE" control should be adjusted to give a timebase of 50 us/div. Adjust the "TRIGGER" "LEVEL" control for O volts. Set the scope to trigger at the left side of the screen. Adjust the "CH 1" "SCALE" control for 1 volt/div. 19. Set the signal generator to deliver a 2.0 kHz sine wave (period T = 500us) with a maximum (peak) voltage of 3 V (NO OFFSET). You should have two sine waves on the screen. Set an appropriate volt/div setting for "CH 2". 20. Adjust the "SCALE" and the "HORIZONTAL POSITION” controls to position the waveforms so the time shift At between the zero-crossover points of the waveforms can be measured with the most accuracy. Record AT and the sec/div setting used to measure it. Use the time AT to calculate the phase shift angle. ? SEC/DIV = ? ? Phase Angle 0 = (AT/T) x 360° = AT = CH 1 Leads CH 2 or CH 1 Lags CH 2 Circle the correct answer ? ?
Name and explain the purpose of the main controls of the Horizontal, Vertical and Trigger sections of a digital oscilloscope scope. r. Post lab Explain what is meant by "In Phase" and "Out of Phase” when reading two waveforms on the screen of an oscilloscope. ? You are training a classmate in how to use the Tektronix TDS210 Oscilloscope to measure a 2kHz sine was with Vp=6V. Outline the steps you would cover to ensure they can learn how to obtain the measurement.
7. Connect the BNC to clip lead from the function generator to a probe connected to "CH 1" of the scope. Adjust the function generator to deliver a 10 V peak to peak 100 Hz sine wave. Calculate the RMS value of this sine wave (Vac). Record your answer in Table 4. 8. Adjust zero volts for "CH 1" one line below the centre of the screen. Switch the coupling mode for "CH 1" between the AC and DC. The waveform should stay in the same position when switching between the two coupling modes. Set the Vertical Scale to 2 V/div and the Horizontal Scale to 2.5ms/div. 9. While "CH 1" is in the DC coupling mode pull out the "DC OFFSET" control on the function generator. Adjust the offset so the positive peak of the waveform moves up 3 volts. This effectively places a 3V DC supply in series with the sine wave. The sine wave is now "riding on", or superimposed or centered on this 3V DC level. 10. Change the coupling mode back to AC. You should notice the waveform drop lower on the screen. How much does the waveform drop and why? Record your answer in Table 3. ? Table 3 11. Calculate the total RMS value for the waveform using RMS voltage from procedure 7 and the DC voltage from procedure 7. Record your answer in Table 4. Table 4 Procedure 7 VAc = ? .? VRMS = v.c + V) (Vbc = 11 12. Connect the DMM across the function generator output. Measure the effective value of the AC component of the waveform by selecting the "ACV" function. Activate the 2nd DMM display by pressing the “2nd" button. Select the “DCV" function to measure the average value or DC component of the waveform. Record these voltages in Table 5.