Measurements using Digital Storage Oscilloscope, different modes of DSO, capturing transients and analysis of waveforms.

AIM:  Measurements using Digital Storage Oscilloscope, different modes of DSO,

            capturing transients and analysis of waveforms.

I) To study different modes of DSO such as Roll, Average, Peak Detection.

II)  FFT analysis using DSO.

III) Capture transients

IV) Various math operations.

Measurement of Total Harmonic Distortion contained by output of amplifier, inverter

AIM: Measurement of Total Harmonic Distortion contained by output of amplifier, inverter.

EQUIPMENTS:

1) Spectrum Analyzer (Agilent,9KHz-3GHz)

2) BJT amplifier circuit

3) connecting probes

4) power supply (Radial industries,SVP030002D,0-32V,DC-2A)

5) Function Generator (Aplab, FG1MD, 1MHz)

Study of network analyzer for measurement of SWR, reflection coefficient and ‘S’ parameters.

Aim: Study of network analyzer for measurement of SWR, reflection coefficient  and  ‘S’ parameters.

Equipment: Network Analyzer

Theory:

Network analyzers characterize the impedance or S-parameters of active and passive networks, such as amplifiers, mixers, duplexers, filters, couplers, attenuators. These components are used in systems as common and low cost as a pager, or in systems as complex and expensive as a communications or radar system. Components can have one port (input or output) or many ports. The ability to measure the input characteristics of each port, as well as the transfer characteristics from one port to another, gives designers the knowledge to configure a component as part of a larger system.

Amplitude Modulator & Demodulator using LabVIEW

AIM: Simulation of Amplitude Modulator & Demodulator using LabVIEW as a virtual instrument.

EQUIPMENT: NI LabVIEW Software installed on PC.

PROCEDURE:

1.     Open the LabVIEW  window and click on Blank VI.

Measurement of RMS, Average and true RMS values for different firing angles using HCB.

AIM:

            To take measurements of V_RMS,V_DC ,V_MEAN  on single phase half controlled bride rectifier for resistive load.

APPARATUS:  1)  Circuit board.

                           2)   True RMS meter(GWINSTEK GDM396).

   3)   DMM (MASTECH M3900).

                           4)   Powerscope (SCIENTIFIC 30MHz SM901).

Analog Link Design

Objective: Using the concept developed in earlier experiments to design a simple set up for
                       transmission of analog signal.                                                                            
                      To understand the design aspects and performance testing involved.

Aim: Design, build and test a simple fiber optical link for transmission of analog signal.

Matlab Code for Image filtering from Salt and Pepper Noise using Median and Wiener filter

clc;
clear all;
close all;
I = imread('rice.png');
I2=imnoise(I,'salt&pepper');
subplot(2,2,1);
imshow(I);
title('Original image');