Curriculum Objectives
* To understand basic theories of digital communication system
* To design and implement digital modulator and demodulator
* To understand the applications of digital modulator and demodulator circuits.
Curriculum Outline
* Design and Implementation of line code encoder and decoder
* Design and implementation of PWM and PCM modulators and demodulators
* Design and implementation of DM and ADM modulators and demodulators
* Design and implementation of ASK, FSK, and PSK modulators and demodulators
DCL-10301
Line Code Encoder
Experiment 1: Unipolar and Bipolar NRZ Signal Encoder
(Signal Type: TTL, Data Rate: 1 ~ 4 kbps)
Experiment 2: Unipolar and Bipolar RZ Signal Encoder
(Signal Type: TTL, Data Rate: 1 ~ 2.5 kbps, CLK: 2 kHz ~ 5 kHz)
Experiment 3: AMI Signal Encoder
(Signal Type: TTL, Data Rate: 50 ~ 250 bps, CLK: 100 Hz ~ 500 Hz)
Experiment 4: Manchester Signal Encoder
(Signal Type: TTL, Data Rate: 100 ~ 400 bps, CLK: 200 Hz ~ 800 Hz)
Line Code Decoder
Experiment 1: Unipolar and Bipolar NRZ Signal Decoder
(Signal Type: TTL, Data Rate: 1 ~ 4 kbps)
Experiment 2: Unipolar and Bipolar RZ Signal Decoder
(Signal Type: TTL, Data Rate: 1 ~ 2.5 kbps, CLK: 2 kHz ~ 5 kHz)
Experiment 3: AMI Signal Decoder
(Signal Type: TTL, Data Rate: 50 ~ 250 bps, CLK: 100 Hz ~ 500 Hz)
Experiment 4: Manchester Signal Encoder
(Signal Type: TTL, Data Rate: 100 ~ 400 bps, CLK: 200 Hz ~ 800 Hz)
PWM Modulator
Experiment 1: uA741 Pulse Width Modulator
(Carrier Signal: 1.5kHz~2 kHz, Audio Signal Frequency: 500 Hz)
Experiment 2: LM555 Pulse Width Modulator
(Carrier Signal: 5 kHz~10 kHz, Audio Signal Frequency: 1 kHz)
PWM Demodulator
Experiment 1: Pulse Width Modulator
(Carrier Signal: 5 kHz~6 kHz, Audio Signal Frequency: 500 ~ 700 Hz)
DCL-10303
PCM Modulator
Experiment 1: PCM Modulator
(Built-in Sample Frequency: 8 kHz, Built-in Operation Frequency: 2048 kHz, Audio Signal: 100 Hz ~ 2 kHz)
PCM Demodulator
Experiment 1: PCM Demodulator
(Built-in Sample Frequency: 8 kHz, Built-in Operation Frequency: 2048 kHz, Audio Signal: 500 Hz ~ 3kHz)
Delta Modulator
Experiment 1: Delta Modulator
(Signal Type: TTL, Sample Frequency: 32 kHz ~ 256 kHz, Audio Signal: 1 kHz ~ 3 kHz)
Delta Demodulator
Experiment 1: Delta Demodulator
(Signal Type: TTL, Sample Frequency: 32 kHz ~ 256 kHz, Audio Signal: 1 kHz ~ 3 kHz)
Adaptive Delta Modulator
Experiment 1: Adaptive Delta Modulator
(Signal Type: TTL, Sample Frequency: 32 kHz ~ 128 kHz, Audio Signal: 500 Hz ~ 1 kHz)
Delta Demodulator
Experiment 1: Adaptive Delta Demodulator
(Signal Type: TTL, Sample Frequency: 64 kHz ~ 256 kHz, Audio Signal: 500 Hz ~ 1 Hz)
ASK Delta Modulator
Experiment 1: XR2206 ASK Modulator
(Carrier Signal: 20 kHz, Data Rate: 1 kbps)
Experiment 2: MC1496 ASK Modulator
(Carrier Signal: 20 kHz ~ 100 kHz, Data Rate: 2 kbps)
ASK Delta Demodulator
Experiment 1: Asynchronouse ASK Modulator (I) (Use XR2206 as the modulated ASK signal)
(Carrier Signal: 20 kHz, Data Rate: 200 bps ~ 1 kbps)
Experiment 2: Asynchrouse ASK Modulator (II) ( Use MC1496 as the modulated ASK signal)
(Carrier Signal: 20 kHz ~ 100 kHz, Data Rate: 200 bps ~1 kbps)
Experiment 2: Synchrouse ASK Modulator
(Carrier Signal: 100 kHz ~ 100 kHz, Data Rate: 200 bps ~2 kbps)
FSK Modulator
Experiment 1: XR2206 FSK Modulator
(Data Rate: 200 bps ~ 400 bps)
Experiment 2: LM566 FSK Modulator
(Data Rate: 200 bps ~ 400 bps)
FSK Demodulator
Experiment 1: FSK Demodulator (I) (use XR2066 as the modulated FSK signal)
(Data Rate: 200 bps ~ 400 bps)
Experiment 2: FSK Demodulator (II) (use LM566 as the modulated FSK signal)
(Data Rate: 200 bps ~ 400 bps)
DCL-10308
PSK Modulator
Experiment 1: PSK Modulator
(Carrier Signal: 100 kHz, Data Rate: 200 bps)
PSK Demodulator
Experiment 1: PSK Demodulator
(Carrier Signal: 100 kHz, Data Rate: 200 bps)
Optional Equipments
FG-442002: Function Generator and DC Power Supply (optional)
Function Generator:
Two signal output ports
Freq. Range: 10 Hz ~ 100KHz and 100Hz ~ 1 MHz
Waveforms: Sine, Triangle, Square, TTL Pulse
Amplitude: 10 Vpp
Built-in 6-digit frequency counter
Large 0.5" LED display
Overload protection
DC Power Supply:
Triple bipolar voltage output
Constant voltage operation
Low ripple and noise
Oscilloscope(Optional)
