Synchronous Online Laboratory INTRODUCTION Objective: Familiarize yourself with the operation of an oscilloscope and calculations needed...
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Synchronous Online Laboratory INTRODUCTION Objective: Familiarize yourself with the operation of an oscilloscope and calculations needed for measurement of motor speed. Video: Please review the video from Time 1:01:22 until 1:26:22. The Measurements of Speed link can be found here: (709) MEASUREMENTS OF SPEED - YouTube Please also look at this video: (709) Measuring Rotational Speed Using an Oscilloscope and a 34972A - YouTube Reference Information: Oscilloscope Basics | Reading & Operating Tutorial | Tektronix Virtual Oscilloscope: Please use the virtual oscilloscope found here: Interactive Online Virtual Oscilloscope and Signal Generator Tutorial (dit.ie) PROCEDURE Use the virtual oscilloscope for the laboratory. You will use the function generator to simulate the motor speed. Set to a square wave Set the Amplitude to 5V Set Frequency Multiplier to 1. DC Offset to 0V You should look like below. FREQUENCY SELECT 100k 10k 1k 100 10 WAVEFORM SELECT 1 ~ ~ 2 FREQUENCY TTL MULTIPLIER DC OFFSET AMPLITUDE 0.8 1.2 OV 0.6 1.6 0.4- 0.2 -2 5 OUTPUT -4V 4V Ov 8V 0 10 The Frequency Select represents the RPM of your motor. Vary the RPM from: 10 100 1,000 Using the Virtual Oscilloscope (image below) Trig Vertical Pos Horizontal Pos CHANNEL 1 volts/div time/div 10m 20m 50m 20m 50m 0.1 10m. 1m 0.1 0.5 0.5m- -0.2 1m- 0.2m 0.5 0.5m 0.2m 5 0.1m 1 Trigger Edge On Level Rising CH1 Off Falling and demonstration from your instructor determine that you are measuring A 10 V peak to peak signal. Take images documenting how it was measured. o Record Volts/div used and how many boxes indicates you are measuring 10 V. For each Speed set your Time/div, and trigger level to measure the speed. Take images documenting how it was measured. Record Time/div used and how many boxes indicates you are measuring. Does your calculation match? Create a table documenting your results. 1 Volt - 4.4 boxes X 5V = 22V div Time - 6.8 boxes X. 2 msec = 1.36m Sec div Sweep function - .8 Range H - 1K H - 4.5 boxes x 5V = 22.5 5.8 boxes x 20 m See = 116-45cc volt div Time div Sweep function Range H 10 K H 2 - .8 Volt div Time div -4.4 boxes x SV = 22V - 6.1 boxes x 2 Sec = 12.2 ubec Sweep - .8 function Range H 100 K H 3/4 Synchronous Online Laboratory INTRODUCTION Objective: Familiarize yourself with the operation of an oscilloscope and calculations needed for measurement of motor speed. Video: Please review the video from Time 1:01:22 until 1:26:22. The Measurements of Speed link can be found here: (709) MEASUREMENTS OF SPEED - YouTube Please also look at this video: (709) Measuring Rotational Speed Using an Oscilloscope and a 34972A - YouTube Reference Information: Oscilloscope Basics | Reading & Operating Tutorial | Tektronix Virtual Oscilloscope: Please use the virtual oscilloscope found here: Interactive Online Virtual Oscilloscope and Signal Generator Tutorial (dit.ie) PROCEDURE Use the virtual oscilloscope for the laboratory. You will use the function generator to simulate the motor speed. Set to a square wave Set the Amplitude to 5V Set Frequency Multiplier to 1. DC Offset to 0V You should look like below. FREQUENCY SELECT 100k 10k 1k 100 10 WAVEFORM SELECT 1 ~ ~ 2 FREQUENCY TTL MULTIPLIER DC OFFSET AMPLITUDE 0.8 1.2 OV 0.6 1.6 0.4- 0.2 -2 5 OUTPUT -4V 4V Ov 8V 0 10 The Frequency Select represents the RPM of your motor. Vary the RPM from: 10 100 1,000 Using the Virtual Oscilloscope (image below) Trig Vertical Pos Horizontal Pos CHANNEL 1 volts/div time/div 10m 20m 50m 20m 50m 0.1 10m. 1m 0.1 0.5 0.5m- -0.2 1m- 0.2m 0.5 0.5m 0.2m 5 0.1m 1 Trigger Edge On Level Rising CH1 Off Falling and demonstration from your instructor determine that you are measuring A 10 V peak to peak signal. Take images documenting how it was measured. o Record Volts/div used and how many boxes indicates you are measuring 10 V. For each Speed set your Time/div, and trigger level to measure the speed. Take images documenting how it was measured. Record Time/div used and how many boxes indicates you are measuring. Does your calculation match? Create a table documenting your results. 1 Volt - 4.4 boxes X 5V = 22V div Time - 6.8 boxes X. 2 msec = 1.36m Sec div Sweep function - .8 Range H - 1K H - 4.5 boxes x 5V = 22.5 5.8 boxes x 20 m See = 116-45cc volt div Time div Sweep function Range H 10 K H 2 - .8 Volt div Time div -4.4 boxes x SV = 22V - 6.1 boxes x 2 Sec = 12.2 ubec Sweep - .8 function Range H 100 K H 3/4
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