QPSK DQPSK Demodulation Trainer .
Advance Digital CommunicationnTrainer 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.


  • Dibit Pair, Differential Encoding type DataFormat for decoding.
  • Receiver Clock generated by PLL method.
  • Switch faults are provided to study its effects on circuits.
  • Block Description screen printed on PCB.
  • In-Built Power Suppl


  • List of experiments are same for both 40620 and 40621.
  • 40620 and 40621 are combined to perform the experiments.


  • Data Format (De-Coding)                                                                                      - Dibit Pair (I & Q), Differential Encoding of I & Q Bits.
  • Carrier Demodulation Techniques                                                                            - DPSK Demodulation                                                                                          - DQPSK Demodulation
  • Interconnections                                                                                                  - All interconnections are made using 2mm banana Patch cords
  • Test points are provided to analyze signals at various points.
  • All ICS are mounted on IC Sockets.
  • Bare board Tested Glass Epoxy SMOBC PCB is used.
  • In-Built Power Supply of +5V/1.5A, ±12V/250mA with Power ON indication
  • Attractive enclosure
  • Set of 2mm Patch cords for interconnections
  • User's Manual with sample experiments programs.

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