QAM DQAM Demodulation Trainer .

Advance Digital Communication Trainer System that helps one under stand various Digital Modulation and Demodulation Techniques. Various functional block diagrams are provided on-board as an aid for Teaching/Training. These Kits are provided with various Test Points to visualize the signals on Oscilloscopes.


  • Receiver Clock generated by PLL method.
  • Demodulation is done using PLL and Envelop Detector Method.
  • Switch faults are provided to study its effects on circuits.
  • Block Description screen printed on PCB.
  • In-Built Power Supply.


  • To study Tribit decoding technique.
  • To study Differential decoding of Data.
  • Observation of constellation diagram.
  • To study bandwidth efficiency of 8-QAM/DAQM.
  • To study 8-QAM Demodulation technique.
  • To study DQAM Demodulation technique.
  • To study Effect of Switch faults


  • Receiver Clock                                                                                                    - Receiver clock generated using PLL method
  • Data Format (Decoding)                                                                                        - Non Return to Zero-Level (NRZ-L)                                                                        - Tribit Decoded data (I ,Q & C)                                                                             - Differential Decoded I & Q Bits.
  • Carrier Demodulation Techniques                                                                            - Quadrature Amplitude Demodulation                                                                    - Differentially Quadrature Amplitude Demodulation

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