Objective:

• Observe linear delta modulation, adaptive delta & delta sigma modulation.

• Cure the problem of slope overloading by adaptive control circuit & study of effect on demodulation signal by changing in sampling Frequency.

• Recovery of modulating signal from demodulator circuit

This trainer provides all necessary inputs and connections for students to study Delta, Adaptive Delta and Delta Sigma Modulation Demodulation. In signal communication operating at low frequencies or speech communication a saving in bandwidth can be resulted using Delta Modulation and its associated techniques because this requires single encoding of sample. This trainer cover Delta, Adaptive Delta and Delta Sigma Modulation and Demodulation. 

Technical Specification:

• In built DC regulated Power Supply + 12 V, + 5V / 300mA

• On board Sampling Pulse Generator

Frequency : 64 Khz, 128 Khz , 256 KHz             Amplitude : 5 Vpp Aprox

• On board Sine Wave Generator

Frequency : 1 Khz 2 KHz                                Amplitude : 0-4 Vpp Aprox.

• Modulation using Flip Flop , a unipolar to bipolar converter , an integrator and a comparator..

• Demodulation using 4 th Low Pass Filter

• Glass Epoxy PCB used as front panel 

Optional Accessories :