signal processing

Noise and Autocorrelation

Student Manual

The experiment gives you an introduction to noise and its analysis. Our main objective in this experiment is to investigate many statistical properties of white noise. This experiment is divided into sections, such that each section introduces one of the key concepts, and finally this culminates to our final objective.

Software CodeDownload
Sample ResultsWhite noise with RC Filter of cut off frequency of 500Hz
PRBS generator output after level shifter
Normalized autocorrelation with different cut off frequencies
Hardware ManualEquipment used in this experiment
Experiment Code2.8
Version1st October 2008

Further Readings and References


Pictorial Procedure

Circuit_PRBSGExperimental_block

DETAIL

Introduction to the Lock-in Amplifier

Student Manual

In experiments, we repeatedly come across situations where we want to measure the response of a system and the response is feeble or is buried in excessive noise. Through this experiment we introduce the art of precise measurements using a lock-in amplifier which is an integral component of several experiments in the physics lab.

Hardware ManualLock-in Amplifier
Optical Chopper
Photodiode
Experiment Code2.2
Version28 April 2010

Further Readings and References


Pictorial Procedure

DSCN0085DSCN0096DSCN093DSCN0103DSCN0081

DETAIL

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