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In this lab we will learn how to use tools such as the function generator and the oscilloscope. We will also learn the basics to reading datsheets and schematics.

Reproduce each of the following figures as closely as possible, and include a screenshot in your write up. Don't forget to include the measurements and cursors. Some of the input signals have introduced an offset.

If you are using the Tektronix TDS 3012B and it has an ethernet connection, you can easily take screenshots of the display. Simply type the IP address of the oscilloscope into your computer's web browser, and it will connect to the scope's web interface. If you don't know the IP address of your scope, restart it. The 3012B will display its current address during it's start up sequence. Once you're connected to the scope from your web browser, you may save the image of the current display or control it through the web interface.

By default, the oscilloscope acquires the signal with a very rough sampling process. If you wish to improve the quality of your display you may change the Acquisition Mode. You may do this by going to Quick Menu -> Acquire Mode then changing the mode. Averaging several samples will give you a much smoother looking result.

Figure 1: sine wave

Sine wave with measurements and cursors

Figure 2: square wave

Square wave with measurements and cursors

Figure 3: fft of sine wave

Sine wave and it's FFT. FFT options may be found under the Math section.
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Now we will measure a couple signals directly on the ELEC226 board and learn how to read a schematic. Download lab1_2_lite.hzx . Open CrossStudio Release 1.3, and set your target as the MSP430 USB CrossConnect. You can do this by clicking on View -> Targets . The Targets window should open up on the right panel. Right click on MSP430 USB CrossConnect and select Connect . You may download the project file to the MSP by selecting Download File -> Download CrossWorks Executable File and navigating to the desired file.

Now locate the two high frequency crystal oscillators. They are small silver cylinders. Directly probe the two oscillators, and measure their respective frequencies. Next, using the schematic locate the pin that outputs SMCLK or MCLK . (Use the pin on Port 5.) This is currently configured to output one of the oscillators. Probe this pin and compare with the results that you obtained probing the oscillators directly. Next, using the schematic locate the output pins for DAC0 . Measure the peak-to-peak amplitude, and frequency of the signal and include a screenshot.

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Next, we will run a couple signals from the function generator through the board's Analog to Digital Converters (ADC) and measure it a couple different places. Download lab1_3_lite.hzx . Download the file like you did in Problem 2. Set your function generator to produce a signal less than 2 kHz. Connect it to the input of A1 , analog input 1, and measure the signal at the output of DAC0 . Try to recreate the following figure.

Sine wave through ADC and DAC
What happens are you increase the frequency or amplitude of the input signal? At what frequency does the signal very become skewed?

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Questions & Answers

what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Microcontroller and embedded systems laboratory. OpenStax CNX. Feb 11, 2006 Download for free at http://cnx.org/content/col10215/1.29
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