Study of Pulse Width Modulation & Demodulation

Description

Study of Pulse Width Modulation & Demodulation

Product code: GE426

Objective: Observe change in width of clock pulses according to the amplitude of the modulating signal at the different clock frequencies.

Technical Specifications:

• In built IC based DC regulated power supply +12V, + 5/300.

• On board sine wave audio frequency signal generator

• Frequency: 1 KHz & 2KHz Amplitude: 0-10 Vpp & 0-4 Vpp

• On board sampling pulse generator (Frequency: 8KHz, 16KHz, 32KHz, 64KHz

Amplitude: 5Vpp)

• Modulation using IC 7555 multivibraror.

• Demodulation of PWM using 4th order / low pass filter & AC amplifier using TL 074 with adjustable qain control.

Pulse Position Modulation & Demodulation

Product code: GE427

Objective: Observe change in position of clock pulses according to the amplitude of the Modulating signal at the Different clock frequencies

 Technical Specifications:

• In built IC based DC regulated power supply +12V, + 5V/ 300mA.

• On board sine wave audio frequency signal generator

• Frequency: 1 KHz &2KHz Amplitude: 0-1 OVpp& 0-4Vpp

• On board sampling pulse generator (Frequency: 8KHz, 16KHz, 32KHz, 64KHz

Amplitude :5Vpp)

• Modulation using IC 7555 multivibratorand pulse width modulation as input.

+ Demodulation of PPM using 4th order/ low pass filters & AC amplifier using TL 074 with adjustable Cain control.

PAM-PWM-PPM Modulation & Demodulation Trainer Kit

ProductCode: GE 428

Objective:

• Pulse Modulation Techniques • Pulse Amplitude Modulation • Pulse Width Modulation • Pulse Position Modulation

Technical Specifications:

• On-board Sampling Frequencies (Pulse):- 8KHz, 16KHz, 32 KHz, 64KHz

• On-board Generator:- 

   1. Sine Wave:- IKHz & 2KHz (Gain adjustable) 

   2 .Square wave:-1 KHz & 2 KHz (optional)

• Low Pass Filter: 4m order VW Filter

• Voice Communication: Voice link using dynamic mic & speaker AC Amplifier with adjustable gain control DC Out put: -4 V(variable)

• Switched faults: 8 nos.

• interconnections:- 4mm banana sockets

• Test Points: 29

• Power Supply: 2 20V ±10%, 50Hz

• Included:-Manual, Set of Patch cords, Line Cord, Microphone, Head Phone

• Experiments:

• PAM using natural & flat top sampling

• Samples, Sample & Hold & Flat top out puts in PAM.

• PPM using DC &AC (Sine Wave) Modulating Signals.

• Pulse Position Demodulation

• Pulse width Modulation ^Demodulation

Technical Details