Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| university:courses:electronics:electronics-lab-17 [06 Dec 2018 15:48] – [Hardware Setup:] Mohammed Afzal | university:courses:electronics:electronics-lab-17 [09 Jan 2021 01:00] (current) – user interwiki links Robin Getz | ||
|---|---|---|---|
| Line 1: | Line 1: | ||
| - | ======Activity | + | ======Activity: |
| =====Objective: | =====Objective: | ||
| Line 15: | Line 15: | ||
| The difference between the analog input and the analog feedback DAC ( delta ) is integrated by the integrator ( sigma ). The output of the integrator is quantized by comparing it to a threshold. The results of the comparison is sampled by the clocked latch and the digital output of the latch becomes the data output stream. A more in-depth explanation can be found in this mini-tutorial: | The difference between the analog input and the analog feedback DAC ( delta ) is integrated by the integrator ( sigma ). The output of the integrator is quantized by comparing it to a threshold. The results of the comparison is sampled by the clocked latch and the digital output of the latch becomes the data output stream. A more in-depth explanation can be found in this mini-tutorial: | ||
| - | [[http:// | + | [[adi>static/ |
| =====Materials: | =====Materials: | ||
| Line 46: | Line 46: | ||
| =====Hardware Setup:===== | =====Hardware Setup:===== | ||
| - | The digital pulse source from AWG2 should be configured for a frequency of 100 KHz with a 50% duty cycle. The amplitude should be set to 5 V with a 2.5 V offset which will produce a 0 to 5 V swing. Waveform generator AWG1 should be set as a sine wave and to a frequency of 1 KHz with an offset of 0.7 volts and a 0 V amplitude for the first measurement. | + | The digital pulse source from AWG2 should be configured for a frequency of 100 KHz with a 50% duty cycle. The amplitude should be set to 5 V peak-to-peak |
| =====Procedure: | =====Procedure: | ||
| Line 52: | Line 52: | ||
| With the above settings save the observed oscilloscope waveforms for both the digital (Dout) and filtered analog output (Aout) as plot number 1 in your lab report. The digital output waveform should be low most of the time with narrow pulses. The reconstructed analog output after the RC low pass filter should have a DC average value approximately the same as the value that the DC offset of the waveform generator is set to. Now set the offset of waveform generator to 2.7 volts. Again save the observed oscilloscope waveforms as plot number 2 in your lab report. The digital output should be high much more of the time and the average value of the analog output should be close to 2.7 volts. | With the above settings save the observed oscilloscope waveforms for both the digital (Dout) and filtered analog output (Aout) as plot number 1 in your lab report. The digital output waveform should be low most of the time with narrow pulses. The reconstructed analog output after the RC low pass filter should have a DC average value approximately the same as the value that the DC offset of the waveform generator is set to. Now set the offset of waveform generator to 2.7 volts. Again save the observed oscilloscope waveforms as plot number 2 in your lab report. The digital output should be high much more of the time and the average value of the analog output should be close to 2.7 volts. | ||
| - | Now set the offset of the waveform generator to 1.75V and the amplitude to 1.6V. Now save the waveforms as plot number 3 in your lab report. Open the spectrum analyzer window. The frequency spectrum of the digital waveform and analog waveforms can now be measured and saved as plot number 4 in your lab report. | + | Now set the offset of the waveform generator to 1.75V and the amplitude to 1.6V peak-to-peak. Now save the waveforms as plot number 3 in your lab report. Open the spectrum analyzer window. The frequency spectrum of the digital waveform and analog waveforms can now be measured and saved as plot number 4 in your lab report. |
| =====Questions: | =====Questions: | ||
| Line 68: | Line 68: | ||
| **For Further Reading:** | **For Further Reading:** | ||
| - | [[http:// | + | [[adi>static/ |
| ta ADC Advanced Concepts and Applications]]\\ | ta ADC Advanced Concepts and Applications]]\\ | ||
| - | [[http:// | + | [[mw>matlabcentral/ |
| http:// | http:// | ||
university/courses/electronics/electronics-lab-17.1544107683.txt.gz · Last modified: 06 Dec 2018 15:48 by Mohammed Afzal