Name of the exercise

Basics of Analog Digital Conversion Using a PC Interface and Labview

Responsible for the exercise

Isa Dumanoglu (Cukurova University)

Description of the exercise

This exercise aims to teach to the students basics of Analog Digital Conversion. A signal generator provides an analog signal which will be converted to digital form using a PC interface which is connected to a computer through USB. This interface has two ADC inputs. Students will acquires converted signal using a Labview program. During the first part of this exercise student will acquire signal by one reading each time. Changing the frequency they will find the maximum frequency which they can read. After some limit they will see how the signal is started to distorted. Also changing the amplitude of signal they will find the saturation voltage. During the second part of the exercise they will started to read in blocks. This way they will see they could read higher frequencies.Increasing the frequency they will find again maximum value they could read. This time they will almost reach the conversion limit of the ADC.

What will the students learn

The students will learn basics of Analog Digital Converter (ADC)

-How the analog singal can converted to digital form.

-How to plot digital signal using Labview.

-When an ADC saturate.

-What sampling frequency means.

-What is the limits of ADC according to software and hardware.

Duration

2 hours

List of material

Labview 8

PC

PC Interface

Signal Generator

Relevant information

Add URLs to:

• Related lectures (typically the exercises will take place after the related lectures)
• The manuals of the devices (modules, scopes, etc) and S/W packages used in the exercise

In addition you have to provide:

• An installation guide. This document is for the supervisor of the exercise. It has to describe in detail how the material has to be set up before the exercise can start (Cabling, S/W installation, etc.)
• An instruction sheet. This document is for the students and tells them whay they have to do

Solution

You have to provide a possible solution for the exercise witch the students can consult after the exercise or if they get stuck. The solution should not be in this TWiki (we don't want the students to see it)