Transcript Investigating Sine Waves Using National Instrument`s MyDAQ Tool

Investigating Sine Waves
Using National Instrument’s
MyDAQ Tool
Peter Paliwoda
Outline
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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
$200
$50-$200

+
$300-$10,000
=
+
$300-$5,000
+ much more
What is MyDAQ
Digital Multimeter
Oscilloscope
Function Generator
Launching NI ELVISmx Software
Digital Multimeter (DMM)
Click here
To 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 History
Heinrich Rudolf Hertz
Radio History
Nikola Tesla
AM Radio
AM – Amplitude Modulation
Voice
Modulator
Generating Sine Waves
3 2 sin 628.32t 
DC offset
Amplitude
Frequency Content
Amplitude  2
DC _ offset  3
2
period 
 0.01 sec onds
628.32
1
1
frequncy 

 100 Hertz  100 Hz
period 0.01
Function Generator (FGEN)
Click here
To open FGEN
Oscilloscope (Scope)
Click here
To open Scope
Generating Sine Waves
3 2 sin 628.32t 
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_embedd
ed&v=EChOw2Ly5mM
Thank you