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Department of Computer and Communication Systems Engineering

Faculty of Engineering

Universiti Putra Malaysia

43400 UPM Serdang

Selangor 

Course : ECC 3106

Credit ours : 3+1

Semester : 2 (2015/2016)

!ecturer : Dr. Masyita Hanafi

"o# of Students :

Demonstrator :  Azizi Mohd Ali!a$oratory : El!troni!s Co""#ni!ation Cir!#it

Duration : 3 Ho#rs

%EE& ': (M DEM)DU!(*)+ , (+D%(+E

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2.5.1 OBJECTIVES

The objective of this lab is to give the students a first introduction to the AnalogCommunication Board namely Edu-Labs Didactic (ACT-3-! trainer"# $hich $ill be

e%tensively used in subse&uent e%'eriments

• The ACT-3-! $ill enable the students to identify the different circuits of the A)

demodulator# and understand their res'ective functions

• The configuration of the different circuit bloc*s to im'lement analog communication

systems is introduced

•+ome testing and e%'erimentation $ith the ACT-3-!# ,unction enerator and

.scillosco'e e&ui'ment is also included

2.5.2 LIST OF EQUIPMENTS

NO. EQUIPMENTS QTY

/ .scillosco'e /! ,unction enerator !

3 0o$er +u''ly 12#-2 /

4 A) )odulation Board /

2.5.3 PREPARATION (PRE-LAB)

Do the com'lete revision of A) demodulator trainer by referring to the user manual

ACT-3-!# Cha'ter 4# ACT45 A) Demodulator 6indly go through the theoretical of A)

demodulator from +ection 4-/ until 4-!

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2.5.4 EXPERIMENTS WORS

0lease go through the e%'eriment 'rocedures and discuss the results obtained

E!"#$%' 1 Diode detector

E!"#$%' 2 0roduct Detector

E!"#$%' 2-2  .bserve on the variation of A) demodulator by changing the am'litude

and fre&uency of audio signal

E!"#$%' 2-2 .bserve on the variation of A) demodulator by changing the am'litude

and fre&uency of carrier signal