IntroductionQuick Notes (to get started fast)TriggerInterface DetailsAuto Scale ButtonAnalog SectionHorizontal SectionDisplay ButtonMeasure SectionCursorsExamplesMeasuring the Peak-to-Peak Voltage (Vpp) of a WaveformMeasuring Frequency of a WaveformMeasuring Voltage with CursorsUsing AveragingMeasuring a Transfer CharacteristicUNIVERSITY OF CALIFORNIA AT BERKELEYCollege of EngineeringDepartment of Electrical Engineering and Computer SciencesEE105 Lab ExperimentsAgilent DSO5014A Oscilloscope TutorialContents1 Introduction 12 Quick Notes (to get started fast) 13 Trigger 24 Interface Details 24.1 Auto Scale Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24.2 Analog Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.3 Horizontal Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.4 Display Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44.5 Measure Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44.6 Cursors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Examples 55.1 Measuring the Peak-to-Peak Voltage (Vpp) of a Waveform . . . . . . . . . . . . . . . . . . . . 55.2 Measuring Frequency of a Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.3 Measuring Voltage with Cursors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.4 Using Averaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65.5 Measuring a Transfer Characteristic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 IntroductionThe Agilent DSO5014A is an oscilloscope, and it is used to measure voltages that vary with time. There arefour independent input channels available on the DSO5014A; thus, it can be used to simultaneously measureand compare four different waveforms (e.g. input and output waveforms of an amplifier).The default mode of the oscilloscope plots time on the horizontal axis and voltage on the vertical. Thescaling of the axes can then be adjusted for each input signal. Scaling can either be done manually or withthe “Auto Scale” button. There are other mo des of operation for the oscilloscope as well, such as the XYmode that plots one channel against the other in a Voltage-Voltage plot. However, in these labs, you willprimarily use the default mode.This tutorial starts with quick notes on the most vital informa tion. So, if you feel somewhat comfortableusing the oscilloscopes, you can check over the quick notes and figure out the deta ils on your own. Otherwise,please also read the later sec tions, which include more detailed descriptions of the Agilent DSO5014A interfaceas well as examples of common measurement procedures .2 Quick Notes (to get started fast)• After connecting the probes, try the “Auto Scale” button. It will generally provide a good axis scalingif the waveform is not too irregular, small, or at a high-frequency.13 TRIGGER 2• Each channel has an independent contr ol knob to allow the manual setting of the vertical scale. Eachchannel only has one s cale reading, which is displayed to the left of the corresponding channel numb e rat the top of the screen. To adjust the scale, simply turn the knob in the ANALOG section. Theseknobs are located above the numbered buttons; there is one vertical scaling knob for each input channel.• To conduct measurements (e.g. measuring Vpp), pre ss the “Quick Measure” button in the MEASUREsection o f the pa nel. Notice the softkeys that app e ar on the bottom of the screen. Select the desiredsource and meas urement using the first two menu buttons below the s c reen (e.g. Source 1, Pk-Pk).Then initiate the measurement by pressing the third menu button (i.e. Measure).• Cursors can be activated by press ing the “Cursor” button. Use the menu buttons b elow the screen toadjust the settings, and use the entry knob next to the “ C ursor” button to move the curs ors.• AC coupling w ill remove any DC bias (offset) from the measured signal. This feature can be selectedusing the menu button below the screen; note that this can only be done in the channel menu. Pressthe corresponding numbered button (e.g . 2) in the ANALOG section to have the channel menu appearon the bottom of the screen.• The oscillos c ope’s ground is earth-grounded, so the black alligator wires on the probes ar e connectedtogether. Since the function generator is also earth-grounded, the oscillosc ope probe grounds areconnected to the function generato r gro und. To avoid shorts to ground, you s hould always connectthe oscilloscope ground clips to the same node. Do not try to use the probes to meas ure floatingsignals (as you can w ith the DMM).3 TriggerThe Agilent DSO5014A has a TRIGGER section on its interface panel. Triggers are used to synchronize theoscilloscope with an external signal so that measurements can be taken at the r ight moment. For example, tocapture a single voltage pulse, one might use a trigger input to signal the oscilloscope to take measurementsat the pulse arrival. Trig gers can also be used with periodic inputs. However, you will generally not need touse oscilloscope triggering in these labs.4 Interface DetailsThe power button is in the lower-left corner of the front panel. Press it to turn on the oscilloscope.The oscilloscope screen should now display a coordinate system. At the top of the screen, vertical andhorizontal scaling units are displayed. The default mode will display vertical scaling for each input involts/div and horizontal scaling in seconds/div. Note that these units correspond to the respective lines thatmake up the …
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