4 IT 8. COMMUNICATION LAB

1.  Harmonic analysis of a square wave of modulated waveform

2.  Observe the amplitude modulated waveform and measures modulation index. Demodulation of the AM signal

3.  To modulate a high frequency carrier with sinusoidal signal to obtain FM signal. Demodulation of the FM signal

4.  To observe the following in a transmission line demonstrator kit :

i.  The propagation of pulse in non-reflecting Transmission line.

ii.  The effect of losses in Transmission line.

iii.  The resonance characteristics of al half wavelength long x-mission line.

5.  To study and observe the operation of a super heterodyne receiver

6.  To modulate a pulse carrier with sinusoidal signal to obtain PWM signal and demodulate it.

7.  To modulate a pulse carrier with sinusoidal signal to obtain PPM signal and demodulate it.

8.  To observe pulse amplitude modulated waveform and its demodulation.

9.  To observe the operation of a PCM encoder and decoder .To considers reason for using digital signal x-missions of analog

signals.

10.  Produce ASK signals, with and without carrier suppression, Examine the different processes required for demodulation in

the two cases.