| All the setups are self-contained in fiberglass, elegant boxes and come with own power supplies. The top anodized plates are neatly labeled for clear understanding. |
1) SAMPLING AND RECONSTRUCTION
Verification of sampling theorem can be done with this set up. Sampling rate is variable from 100 Hz to 10 kHz active low pass filter with different cut off frequency is provided. |
2) FSK MODULATOR AND DEMODULATOR.
1070 Hz signal used for logical 0 and 1270 signal is used for logical representation. Built in signal generator is provided to simulate incoming digital signal (or train of pulses) in the range 10 Hz to 50 Hz. This output when connected to demodulator operated by means of a PLL gives out the train of pulses sent by the inputs. These inputs and outputs can be observed on CRO. |
3) BLOCK ENCODER AND BLOCK DECODER.
(7,4) code is used. Four switches alongwith indicators are provided for data inputs. Data bits and parity bits are included. The decoder includes provision for error introduction and corresponding syndrome is also indicated with output bits and parity bits. |
4) PAM MODULATOR AND DEMODULATOR.
Pulse Amplitude Modulation (PAM) results when a train of constant amplitude very short pulse occurring at very fast pulse repetition rate is caused to very in amplitude with a slower modulating wave. Flat to PAM sampling system is used. The modulator and demodulator outputs can be observed on CRO. Signal generator used for TDM can be shared with this set up. |
5) TIME DIVISION MULTIPLEXING (TDM).
Modulator and demodulator: The system is designed to demonstrated the working TDM system with four channels is provided with this set up. The waveform can be observed at the TDM output and separation of these channels in individual channel can be observed at the demodulator output, which includes second order active filters.
We also supply, |
| 6) AM MODULATOR AND DEMODULATOR |
| 7) FM MODULATOR AND DEMODULATOR |
| 8) DELTA MODULATOR AND DEMODULATOR |
| 9) PPM/PWM MODULATOR AND DEMODULATOR |