| Objective : |
| a) Observe the conversion of DC Signal in to Digital Signal using Sample & Hold and A/D Converter |
| b) The PCM system is divided in five blocks i.e. Clock Generator, Sample & Hold Amplifier, Analog to Digital Converter, Multiplexer, Timing & Control Logic. |
| Technical Specification : |
| * In built IC based DC Regulated Power Supply ±12V, +5/ 500mA |
| * On board DC supply as modulating signal 0-5V DC. |
| * On board Clock Signal Generator, Frequency : 7.8KHz & 125KHz, Amplitude : 5Vpp Approx. |
| * Modulation using Sample & Hold Amplifier IC LF 398, Analog to Digitalk Converter using IC 0800, Parallel to Serial Converter using IC 74150 multiplexer & Timing and Control Logic using 74160. |
| * Demodulation of PCM using timing & control using 74160, Digital to Analog Converter using IC 0800 and Low Pass Filter follow by an amplifier using IC 741 |
| * Glass Epoxy PCB used as front panel & mounted on light weight shock proof plastic cabinet |
| Power Requirement : 220V AC ±10%, 50Hz |
| Standard Accessories : Patch Cords & Instruction Manual |
| Optional Accessories : CRO 20MHz & Digital Multimeter |
Friday, August 15, 2014
Pulse Code Modulation and Demodulation
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