Technical Specification:
Module -1: Line Code Encoder and Decoder:
Chapter-1 & Chapter-2: Unipolar and Bipolar NRZ Signal Encoder & Decoder
1. Type of Signal: TTL.
2. Data Rate: 1 kbps ~ 4 kbps.
Unipolar and Bipolar RZ Signal Encoder & Decoder:
1. Type of Signal: TTL.
2. Data Rate: 1 kbps ~ 2.5 kbps, CLK: 2 kHz ~ 5 kHz
AMI Signal Encoder & Decoder:
1. Type of Signal: TTL.
2. Data Rate: 50 bps ~ 250 bps, CLK: 100 Hz ~500Hz.
Manchester Signal Encoder & Decoder:
1. Type of Signal: TTL.
2. Data Rate: 100 bps ~ 400 bps, CLK: 200 Hz ~ 800 Hz
Module-2: PWM Modulator and Demodulator:
Chapter-3 & Chapter-4: uA741 Pulse Width Modulator:
1. Carrier Signal: 1.5 kHz ~ 2 kHz.
2. Audio Signal: 500 Hz.
LM555 Pulse Width Modulator:
1. Carrier Signal: 5 kHz ~ 10 kHz,
2. Audio Signal: 1 kHz
Pulse Width Demodulator:
1. Carrier Signal: 5 kHz ~ 6 kHz.
2. Audio Signal: 500 Hz ~ 700 Hz.
Module-3:
Chapter-5: PCM Modulator:
1. Built-in Sample Frequency: 8 kH.
2. Built-in Operation Frequency: 2048 kHz
3. Audio Signal: 100 Hz-2kHz
Chapter-6: PCM Demodulator:
1. Built-in Sample Frequency: 8 kH.
2. Built-in Operation Frequency: 2048 kHz
3. Audio Signal: 500 Hz-3kHz
Function Generator and DC Power Supply:
1. Waveforms: Sine, Triangle Square, TTL Pulse
2. Amplitude: >10Vpp.
3. Impedance: 50ohm±10 percent
4. Duty Control: 30 percent ~ 60 percent
5. Display: 6 Digit LED display
6. Frequency Range: 10HZ to 100 kHz (4 Ranges) Frequency Range: 100HZ to 1 MHz (4 Ranges)
7. Constant Voltage Output: ±5V, ±12V
8. Variable Voltage Output: 0V ~ ±15V
9. Power source: 220 to 230V AC, 50HZ, 1 Phase
Scope of Learning:
1. To understand the basic theory of digital communication system.
2. To understand the applications of digital modulator and demodulator
3. Design and implementation of line code encoder and decoder.
4. Design and implementation of PWM and PCM modulators and demodulators.
