The trainer provides all necessary inputs and connection for students to study decoding and demultiplexing of data transmitted by PCM  transmitter. On-Board PLL provides regeneration of Clock. Synchronization between transmitter and receiver is provided by Pseudo random code.
 

Technical Specifications
Input Channel : Time Division Multiplexed Serial Input
Demodulation : Pulse code Demodulation
Clock Regeneration : By phase Locked loop
Operating Speeds : Fast - 320 KHz/Channel, Slow 1.9 Hz / Channel
Error Detection (Single bit) : Off-Odd- Even parity & Hamming code
Error Correction : Hamming code
PC- PC communication : using 2 channels via RS232
Port : 9 pin D type connector - 2 Nos.
Baud rate : Selectable from 300 to 2400
Test Points : 50
Interconnections : 2 mm sockets
Power Supply : 220 V ±10%, 50Hz / 60 Hz on request
Power Consumption : 4 VA (approx.)

• Functional blocks indicated via on board mimics

• Input accepts two channel multiplexed data

• On board De-multiplexed PCM Receiver

• On board L. P. Filter

• Fast & Slow modes for real time operation and data flow examination

• On board PLL for clock regeneration

• On board sync code detector

• Error +check code options

• Odd or Even Parity-Single bit error detection

• Hamming code single bit error detection and correction

• 4 Switched faults allow different error check code option

• PC - PC Communication via RS232 interface

Experiments that can be performed

• PCM Demodulation Technique

• Time Division Demultiplexing of PCM data

• Clock Regeneration by PLL

• Effect of induced faults in the transmitter & receiver

• Signal recovery in 3 connecting modes between transmitter & receiver

• Clock & Frame Synchronization in PCM system

• PC -PC communication in 3 modes

• Study of synchronization by pseudo random code

• Study of error check codes

• Study of A/D conversion

• Study of control signals and their timing

• Study of time division multiplexing