Integer Systems

Laggere, Bangalore, Karnataka

We are offering qpsk trainer kit. qpsk modulation and demodulation. technical specification: • data bits: 8 bit rz variable data with sliding switch selection. • carrier: on board sine carrier of 8 khz5v amplitude with four different phases (0, 90, 180 and 270 deg). • bit splitting into in phase and quadrature phase components using d-flip flops. • qpsk modulator: using ic cd4051 (multiplexer). • x and y constellation is provided for plotting quadrature components. • qpsk demodulator: squaring and carrier phase comparison method. • power supply: +12v, -12v and +5v with 1000ma regulated dc supply with on board led indication. • patch chords: 2mm banana socket. • various test points are provided on board. experiments: • to study the 8 bit data generation. • to study the sine wave carrier generation of different phases. • to study the conversion of data into in phase (i) and quadrature (q) phase components. • to study the qpsk modulation and sketch the wave forms. • to study the plotting of constellation in graph sheet. • to study the conversion of sine wave into square wave. • to study the qpsk demodulation. • compare received data with original input data. delivery list: • qpsk trainer kit. • power supply. • patch chords. • user manual.