Differential Pulse Code Modulation

Differential Pulse Code Modulation .
Experimental Training Board has been designed specifically to study Differential Pulse Code Modulation & Demodulation Trainer. In the basic DPCM Modulator the base band analog signal is covered into 8 bit digital format using an ADC. The sampling rate is set at 2.5 Khz. The DPCM Demodulator receives the serial data, converts it into 8 bit parallel format. The Digital to Analog converter transforms the 8 bit parallel data into analog level. Thus the output of DAC is a stepped approximation of input signal. A low pass filter is used to recover the analog signal. Practical experience on this board carries great educative value for Science and Engineering Students.

Object:

• To study Differential Pulse Code Modulation & Demodulation

• 5V D.C. at 100mA IC regulated power supply internally connected
• ±12V D.C. at 100mA IC regulated power supply internally connected
• -5V D.C. to + 5V D.C. Variable D.C. output
• Audio Frequency Oscillator 10Hz to 100Hz for modulation
• DPCM Modulator (DPCM ENCODER)
• DPCM Demodulator (DPCM DECODER)
• Adequate no. of other electronic components
• Mains ON/OFF switch, fuse and jewel light
• The unit is operative on 230V ±10% at 50Hz A.C. Mains
• Adequate no. of patch cords stackable from rear both ends 4mm spring loaded plug length ½ metre
• 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

• Dual Trace Cathode Ray Oscilloscope 20MHz