Investigating Sine Waves Using National Instrument’s
MyDAQ Tool
Peter Paliwoda
Outline
• Who is National Instruments
• What is MyDAQ
• Multimeter
• Brief History of Radio
• AM Radio
• Function Generator
• Oscilloscope
Who is National Instruments• American Company
• Producer of automated test equipments
• Producer of virtual implementation software
What is MyDAQ• General Purpose Data Acquisition Device• Multimeter, Oscillocope, Function Generator,
Spectrometer and much more
=
+
+
$50-$200
$300-$10,000
$300-$5,000
$200
+ much more
What is MyDAQ
Digital Multimeter Oscilloscope Function Generator
Launching NI ELVISmx Software
Digital Multimeter (DMM)
Click hereTo open DMM
• Now we can measure:• Voltage• Resistance• Current
Digital Multimeter (DMM)
Digital Multimeter (DMM)
Measuring Resistance Across 1000Ω
9V
+
-
+ -
Measuring DC Voltage Across 1000Ω
9V
+
-
+ -
Measuring DC Current Across
Radio HistoryHeinrich Rudolf Hertz
Radio HistoryNikola Tesla
AM RadioAM – Amplitude Modulation
Voice Modulator
Generating Sine Waves
t32.628sin23DC offset Amplitude Frequency Content
HzHertzperiod
frequncy
ondsperiod
offsetDC
Amplitude
10010001.0
11
sec01.032.628
2
3_
2
Function Generator (FGEN)
Click hereTo open FGEN
Oscilloscope (Scope)
Click hereTo open Scope
Generating Sine Waves t32.628sin23
Hearing Range
• For humans the audible range of frequencies is usually 20-20,000 Hz
• That is 20 -20,000 cycles per second
• Setup Function Generator in Sweep Mode
• Hook up the output to a speaker
Evaluation Kit for K-12 Teachers
• K-12 Teachers - Ask about the "NI myDAQ Evaluation Kit".
See what NI myDAQ and LabVIEW can do for your classroom, visit:
• http://www.studica.com/myDAQ/•http://www.youtube.com/watch?feature=player_embedded&v=EChOw2Ly5mM
Thank you
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