• To study the following experiments through AT89C51 using the Data formats such as RZ, NRZ-L [Non Return To Zero – Level], NRZ-M [Non Return To Zero – Mark] ,Biphase Mark, Biphase Manchester encoding & decoding , RZ – AMI [Return To Zero – Alternate Mark Inversion] encoding & decoding
  • To study Amplitude Shift Keying (ASK) modulation & demodulation
  • To study Frequency Shift Keying (FSK) modulation & demodulation
  • To study Phase Shift Keying (PSK) modulation & demodulation
  • To study Quadrature Phase Shift Keying (QPSK) modulation & demodulation


    • NRZ(L)&NRZ(M)
    • RZ
    • Biphase MANCHESTER encoding & decoding
    • Study of Biphase Mark, encoding & decoding
    • Study of RZ – AMI encoding & decoding
    • Amplitude Shift Keying (ASK)
    • Frequency Shift Keying (FSK)
    • Phase Shift Keying (PSK)
    • Quadrature Phase Shift Keying (QPSK)

Features of the Trainer

  • Modulator & Demodulator controllers 89C51Compatible with MCS-51™ Products
  • 4K Bytes of In-System Reprogrammable Flash Memory
  • Endurance: 1,000 Write/Erase Cycles
  • Fully Static Operation: 0 Hz to 24 MHz
  • Three-Level Program Memory Lock
  • 128 x 8-Bit Internal RAM
  • 32 Programmable I/O Lines
  • Two 16-Bit Timer/Counters
  • Six Interrupt Sources
  • Programmable Serial Channel
  • Low Power Idle and Power Down Modes
    Carrier source: Output Waveforms Sine.
    Frequency Range 2 KHz to 200 KHz.
    Amplitude Range 0 –12V (P-P).
    Data Selector Switch 8 bits data output Data LO Data HI
    Mode selector switch To select the different functional mode.
    Functional Block Diagram ASK, FSK, PSK, QPSK Modulation//Demodulation.
    Patch Cords 2mm molded patch cords with daisying facility.
    Terminals 2mm multicolored terminals for interconnection.
    Built in power supply +15V/300 mA.
    Input Supply 230 V AC/50Hz mains operated
    Housing It is mounted in an elegant cabinet for better viewing and portability
    Dimension 45cm x 45cm x 18cm
    Weight 6kgs
    Instruction Manual Step-By-Step detailed instruction manual.

    This trainer is a glass-epoxy printed circuit board and all the symbols screen-printed on the front panel so that it enables the student to conduct the experiments easily


  • 2mm multi coloured moulded patch cords with daisying facility.
  • Computer simulated outputs and Step-By-Step detailed instructions are provided with the instruction manual.

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