Pulse Amplitude Modulation/Demodulation


Pulse Amplitude Modulation/Demodulation

Key Features

  • Crystal controlled Clock
  • On-board signal generator (Synchronized) DC and Sine
  • On-board pulse generator
  • Demonstrates sampling and reconstruction as per Nyquist criterion
  • 4 Analog input channels (TDM-PAM)
  • Four switch selectable sampling frequencies
  • Pulse duty cycle selectable
  • Generation of clock at receiver by PLL system
  • 4th order Butterworth L. P. Filters


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Product Description

The unit is one of a range of digital communication trainers and provides all necessary inputs and connections for students to study pulse amplitude modulation / demodulation techniques, time division multiplexing and demultiplexing of signals and signal reconstruction.


  • Study of pulse amplitude modulation technique
  • Study of time division multiplexing and demultiplexing
  • Study of PLL as frequency multiplier to generate clock from sync signal
  • Study of effect of varying duty cycle of sampling pulse on signal reconstruction
  • Study of 3 modes of operation to regenerate original signal
  • 3 connections between transmitter and receiver (clock, sync & information)
  • 2 connections (sync & information). Clock regenerated at receiver
  • 1 connection (information only). Clock and sync derived at receiver