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Summary of Contents for Velleman EDU06
- Page 1 EARN HOW TO GET THE MOST OUT OF YOUR DIGITAL OSCILLOSCOPE EDU06 Oscilloscope Tutor kit HEDU06 By Velleman n.v.
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Page 2: Getting Started
This product is guaranteed against defects in components and construction from the moment it is purchased and for a period of TWO YEAR starting from the date of sale. This guarantee is only valid if the unit is submitted together with the original purchase invoice. VELLEMAN Ltd limits its responsibility to the reparation of defects or, as VELLEMAN components Ltd deems necessary, to the replacement or reparation of defective components. -
Page 3: Table Of Contents
Contents Getting started ..............................2 Oscilloscope basics ............................4 Analog versus digital: ................................4 Waveforms: ..................................4 Measuring probe: ................................5 Connecting the probe: ................................. 5 Setting up the board: ................................5 Experiment 1: Measuring AC voltage ........................ 6 Connection layout: ................................6 Connection summary: ................................. -
Page 4: Oscilloscope Basics
Oscilloscope basics Oscilloscope basics While a multimeter shows an instant voltage level or an average voltage level, an oscilloscope is capable of displaying voltage levels over a period of time. Voltage is displayed vertically (X-axis) versus time (Y-axis). Oscilloscopes can be used to for applications such as: •... -
Page 5: Measuring Probe
Setting up the board: The board requires a 9VAC (Alter- nating Current) adaptor (e.g. Velleman PS905AC (230VAC)). A DC adaptor instead of an AC adaptor will not damage the board, but most experiments will not work correctly. -
Page 6: Experiment 1: Measuring Ac Voltage
Exp.1: measuring AC voltage Experiment 1: Measuring AC voltage Connection layout: NOTES: Connection summary: GND clip : 2 Probe tip : 1 Purpose: The purpose of this experiment is to display and measure AC voltage. In this particular case, we will measure the AC voltage supplied to the board. -
Page 7: Experiment 2: Adjustable Ac Voltage
Exp.2: Adjustable AC voltage (advantages of the auto-setup function) Experiment 2: Adjustable AC voltage (advantages of the auto-setup function) Connection layout: NOTES: Connection summary: Connection summary: GND clip : 2 GND clip : 2 Probe tip : 3 Probe tip : 3 Purpose: The purpose of this experiment is to show the advantages of the auto-setup function to measure AC voltage. - Page 8 Exp.2: Adjustable AC voltage (advantages of the auto-setup function) Turn RV1 a little further clockwise. The signal goes off- screen and the Vrms readout displays ?????mV, because the unit is no longer capable of calculating the correct Vrms. How can we display the current signal correctly again? Increase the V/div setting to 0.1V/div.
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Page 9: Connection Layout
Measuring AC grid frequency and period Experiment 3: Measuring AC grid frequency and period NOTES: Connection layout: Connection summary: Connection summary: GND clip : 2 GND clip : 2 Probe tip : 3 Probe tip : 3 Purpose: The purpose of this experiment is to demonstrate the use of the markers to perform on-screen measurement of frequency and period. - Page 10 Measuring AC grid frequency and period Press the upper right button again to select vertical marker 2. Use the arrow keys to position this marker at the exact same location but further to the right of the screen. You have now selected one period or cycle of the displayed waveform.
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Page 11: Connection Layout
Rectifi ed AC, single phase Experiment 4: Rectifi ed AC, single phase Connection layout: NOTES: Connection summary: GND clip : 4 Probe tip : 5 Purpose: The purpose of this experiment is to show what single phase rectifi ed AC looks like on a scope screen. How?: Turn on the HPS140 Handheld Pocket Scope (see HPS140 manual for How-To instructions). -
Page 12: Connection Layout
Rectifi ed AC, dual phase Experiment 5: Rectifi ed AC, dual phase Connection layout: NOTES: Connection summary: GND clip : 4 Probe tip : 5 Purpose: The purpose of this experiment is to show what dual phase rectifi ed AC looks like on a scope screen and to show the difference with single phase rectifi... - Page 13 Rectifi ed AC, dual phase Now, check what happens when you fl ip the switch from single phase to dual phase rectifi cation. Flip the switch back and forward, to clearly see the difference between both settings. A little theory: As you can see, the ‘interruptions’...
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Page 14: Connection Layout
Smoothed versus unsmoothed DC (ripple) Experiment 6: Smoothed versus unsmoothed DC (ripple) NOTES: Connection layout: Connection summary: Connection summary: GND clip : 4 Probe tip : 6 Purpose: The purpose of this experiment is to show what smoothed and unsmoothed DC looks like on a scope screen and how a scope can help you to determine the quality of your DC supply. - Page 15 Smoothed versus unsmoothed DC (ripple) Can we measure this amount of ripple? Yes we can, a scope is the ideal tool for ripple measurement. Flip SW1 back to single phase rectifi cation. Default, your scope starts up with ‘DC-coupling’ selected. Change that to ‘AC-coupling’...
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Page 16: Connection Layout
DC measurement Experiment 7: DC measurement Connection layout: NOTES: Connection summary: C onnection summary: GND clip : 4 D clip : 4 Probe tip : 6 Purpose: The purpose of this experiment is to show that a scope is also suited to measure DC voltages. In general, scopes are used to measure AC voltages. - Page 17 DC measurement Set the DC reference: To set the DC reference, set the input coupling to GND and wait a couple of seconds, until the DC readout in the lower right hand corner displays ‘0.0mV’. If the settings have been performed correctly, your scope will now show a fl...
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Page 18: Purpose
Waveform with adjustable frequency Experiment 8: Waveform with adjustable frequency NOTES: Connection layout: Connection summary: GND clip : 4 Probe tip : 9 Purpose: The purpose of this experiment is to demonstrate the use of the ‘trigger’-function. How?: Place the probe switch “x1/x10” to ‘x1’. Flip SW1 into the ‘full wave’-position. -
Page 19: Exercise
Waveform with adjustable frequency Exercise: Press and hold the upper right hand button, to enter the menu. Release and press again a number of times until ‘Trg Level’ is highlighted. Wait until unit quits the menu. Now look at the bottom left hand side of the screen, the trigger symbol is displayed. -
Page 20: Glossary
Glossary GLOSSARY Determines how many volts the signal at the input must swing for the trace to move one division. Volts/div: Determines the time the trace needs to scan from the the left hand side to the right hand side of a Time/div: division. - Page 21 Glossary Noise: Undesired random addition to a signal. Ripple: Unwanted periodic variation of a DC voltage. Signal: Voltage applied to the input of the oscilloscope. The subject of your measurement. Sine wave: Mathematical function that represents a smooth repetitive oscillation. The waveform shown at the start of this glossary is a sine wave.
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Page 22: Diagram
Diagram... - Page 23 HPS140: HANDHELD HPS1 POCKET SCOPE POCK PCSU200: USB PC Oscilloscope 40MS/s 40MS and Signal Generator Do not let its size fool you! This Do not t le Pocket size PC oscilloscope and function Oscilloscope packs a lot of power in Oscillos Oscillos scop...
- Page 24 Learn what terms such as V/div, Time/div, trigger level, auto-setup etc… mean. All ex- periments featured in this project are performed with the Velleman. Most experiments can be done with any digital storage scope. Some experi- ments can be performed with an analog scope.
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