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Communication Trainer

Frequency Modulation

Product Code: DIDAC-ELECTRONIC-LABS8-A002
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Product Details

Description & Technical Specification

Frequency Modulation
FM Transmitter and Receiver Trainer has been designed with a view to provide practical and experimental knowledge of Frequency Modulation & Demodulation Trainer technique as practically implemented in Analog Communication system on a SINGLE P.C.B. of size 300 x 400 mm.

Object: To Study Theory of Frequency Modulation & Demodulation:

  • Frequency Modulation via varactor / reactance Modulation
  • Frequency Demodulation via Detuned Resonant/Ratio/Quadrature/Foster - Seeley/Phase locked loop detector
  • Separate VCO circuit to demonstrate FM waveform

Feature:

The board consists of the following built-in parts:

  • POWER SUPPLY : ± 12DC IC Regulated power supply
  • FM Modulating signal generator : Sine wave
  • Frequency Range : 300 Hz to 3.4 Khz
  • Amplitude Range : 0 to 5 Vpp.
  • Modulator Type : Varactor modulator (With carrier frequency adjustment) : Reactance Modulator (With carrier frequency adjustment)

Demodulator (Detuned resonant detector) :

  • Quadrature detector
  • Foster - Seeley Detector
  • Ratio Detector
  • Phase locked loop Detector
  • Mixer/Amplifier : 1 No. (With gain adjustment) Allows FM input signal to be amplitude modulated by a noise input to demodulation.
  • Low pass Filter : 3.4 KHz. Cut of frequency Amplifier (with adjustable gain)
  • VCO Circuit : FM Wave form demonstrate
  • Test Point : 78
  • Power supply requirement : 230V AC, 50 Hz.
  • On Board Switched Faults : 8 Nos.
  • On Board Amplitude limiter with Amplitude control.
  • Input - Output and Test points provided on board.
  • A self contained Trainer.
  • Effect of noise on the detection of FM signal may be investigated.
  • Good Quality, reliable terminal/sockets are provided at appropriate places on panel for connections/ observation of waveforms.
  • Strongly supported by detailed Operating Instructions, giving details of Object, Theory, Design procedures, Report Suggestions and Book References.
  • Weight : 6 Kg. (Approx.)
  • Dimension : W 412 x H 150 x D 310

Other Apparatus Required:

  • Cathode Ray Oscilloscope 20MHz.
  • Patch Cords
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