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