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DCS-02 is a single board advanced digital communication trainer system designed using advanced DDS technology on silicon. This trainerincludes various modulation techniques like BPSK, QPSK, QAM, DPCM and ADPCM etc. It also demonstrates the CRC encoding and decoding.
It gives detailed knowledge of digital base band communication system.
All required input resources are provided on-board. Various test points are provided to observe the intermediate signals. The necessary LED indications are provided to know the status of the experiments. The system comes with descriptive experimental manual.
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SPECIFICATIONS:
Clock & Signal Generation
On board 1KHz sine wave with amplitude 0 to 2V
On board Synchronized Carrier of (0, 90, 180 and 270)
On board 24 bit variable data pattern (8 bit, 16 bit & 24 bit selectable)
16 bit switch selectable PRBS generator
White noise source with amplitude 0 to 2Vpp
Transmitter clocks: 16KHz, 32KHz, 64 KHz, 128 KHz, 256 Khz, 512 KHz & 1.024MHz
TRANSMITTER SECTION:
Data encoding
Differential encoderDibit, Tribit encoder
Scrambler
MODULATION TECHNIQUES:
BPSK, DPSK, QPSK, MSK, modulationQAM modulation
DPCM & ADPCM modulation
RECEIVER SECTION:
Data Decoding
Differential decoderDibit, Tribit decoder
Unscrambler
DEMODULATION TECHNIQUES:
BPSK, DPSK, QPSK, MSK demodulation
QAM demodulationDPCM & ADPCM demodulation
Constellation diagrams for QPSK & QAM Quantization error in DPCM
DIGITAL BASE BAND TRANSMISSION:
Digital PAM
Error bit adder & Inter Symbol Interference
Bit Error Rate (BER) measurement with on board seven segment display
Study of Eye pattern
Bandwidth selectable transmitter & receiver channel
Low pass Butterworth filters
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LIST OF EXPERIMENT:
Study of BPSK, DPSK, QPSK, MSK Modulation and Demodulation
Study of DIBIT Data Encoder
Study of Constellation diagram for QPSK
Study of TRIBIT Data Encoder
Study of QAM Modulation and Demodulation
Study of Constellation diagram for QAM
Study of Pulse Amplitude Modulation of Digital
Data for Base Band Transmission
Study of Eye Pattern
Measurement of Bit Error Rate using Digital Data
Study of Message Scrambler and Unscrambler
Study of DPCM, ADPCM Modulation and Demodulation
Quantization Noise in DPCM
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