The Digital Communications Trainers includes the basic & advanced modules to experiment on fundamental & higher level of analog & digital topics of a telecommunication course. The purpose of the modules is to enable the student to acquire a clear experimental view of the basic & advanced concepts and familiarization with the operative aspects of the work in the telecommunication laboratory. This trainer combined the modules with experimental circuits. It can offer the beginner complete courses of basic & advanced communication in 10 experiments modules with the optional power supply and signal unit, oscilloscope or Spectrum Analyzer, then they can complete various experiments independently.
DIGITAL COMMUNICATION MODULES
LIST OF EXPERIMENTS
- Line Code Encoder Experiment
- Line Code Decoder Experiment
- PWM Modulator Experiment
- PWM Demodulator Experiment
- PCM Modulator Experiment
- PCM Demodulator Experiment
- Delta Modulator Experiment
- Delta Demodulator Experiment
- Adaptive Delta Modulator Experiment
- Adaptive Delta Demodulator Experiment
- FSK Modulator Experiment
- FSK Demodulator Experiment
- ASK Modulator Experiment
- ASK Demodulator Experiment
- PSK Modulator Experiment
- PSK Demodulator Experiment
- QPSK Modulator Experiment
- QPSK Demodulator Experiment
- CVSD Modulation and Demodulation
- Manchester Encoder and Decoder
DIGITAL COMMUNICATION EXPERIMENTS MODULES
01 LINE CODE ENCODER AND DECODER MODULE
Lab 1 Line Code Encoder
- Experiment 1 Unipolar and Bipolar NRZ Signal Encoder (TTL, 1 kbps ~ 4 kbps)
- Experiment 2 Unipolar and Bipolar RZ Signal Encoder (TTL, 1 kbps ~ 2.5 kbps, CLK: 2 kHz ~ 5 kHz)
- Experiment 3 AMI Signal Encoder (TTL, 50 bps ~ 250 bps, CLK: 100 Hz ~ 500 Hz)
- Experiment 4 Manchester Signal Encoder (TTL, 100 bps ~ 400 bps, CLK: 200 Hz ~ 800 Hz)
Lab 2 Line Code Decoder
- Experiment 1 Unipolar and Bipolar NRZ Signal Decoder (TTL, 1 kbps ~ 4 kbps)
- Experiment 2 Unipolar and Bipolar RZ Signal Decoder (TTL, 1 kbps ~ 2.5 kbps, CLK: 2 kHz ~ 5 kHz)
- Experiment 3 AMI Signal Decoder (TTL, 50 bps ~ 250 bps, CLK: 100 Hz ~ 500 Hz)
- Experiment 4 Manchester Signal Decoder (TTL, 100 bps ~ 400 bps, CLK: 200 Hz ~ 800 Hz)
02 PWM MODULATION AND DEMODULATION MODULE
Lab 3 PWM Modulator
- Experiment 1 PWM Circuit (Carrier: 1.5 kHz ~ 2 kHz, Audio: 500 Hz)
- Experiment 2 PWM Circuit (Carrier: 5 kHz ~ 10 kHz, Audio: 1 kHz)
Lab 4 PWM Demodulator
- Experiment 1 PWM Demodulation Circuit (Carrier: 5 kHz ~ 6 kHz, Audio: 500 Hz ~ 700 Hz)
03 PCM MODULATION AND DEMODULATION MODULE
Lab 5 PCM Modulator
- Experiment 1 PCM Modulator (Sample: 8 kHz, Operation: 2048 kHz, Audio: 100 Hz ~ 2 kHz)
Lab 6 PCM Demodulator
- Experiment 1 PCM Demodulator (Sample: 8 kHz, Operation: 2048 kHz, Audio: 100 Hz ~ 2 kHz)
04 DELTA MODULATION AND DEMODULATION MODULE
Lab 7 Delta Modulator
- Experiment 1 Delta Modulator (TTL CLK, 32 kHz ~ 256 kHz, Audio: 1 kHz ~ 3 kHz)
Lab 8 Delta Demodulator
- Experiment 1 Delta Demodulator (TTL CLK, 32 kHz ~ 256 kHz, Audio: 1 kHz ~ 3 kHz)
05 ADAPTIVE DELTA MODULATION AND DEMODULATION MODULE
Lab 9 Adaptive Delta Modulator
- Experiment 1 Adaptive Delta Modulator (TTL CLK, 32 kHz ~ 128 kHz, Audio: 500 Hz ~ 1 kHz)
Lab 10 Adaptive Delta Demodulator
- Experiment 1 Adaptive Delta Demodulator (TTL CLK, 64 kHz ~ 256 kHz, Audio: 500 Hz ~ 1 kHz)
06 ASK MODULATION AND DEMODULATION MODULE
Lab 11 ASK Modulator
- Experiment 1 XR2206 ASK Modulator (Carrier: 20 kHz, Data Rate: 1 kbps)
- Experiment 2 MC1496 ASK Modulator (Carrier: 20 kHz ~ 100 kHz, Data Rate: 2 kbps)
Lab 12 ASK Demodulator
- Experiment 1 Asynchronous ASK Demodulator (XR2206, 20 kHz, 200 bps)
- Experiment 2 Asynchronous ASK Demodulator (MC1496, 20 kHz ~ 100 kHz, 200 bps)
- Experiment 3 Synchronous ASK Demodulator (100 kHz, 200 bps)
07 FSK MODULATION AND DEMODULATION MODULE
Lab 13 FSK Modulator
- Experiment 1 FSK Modulator (Space: 1370 Hz, Mark: 870 Hz, Data: 200 Hz ~ 5 kHz)
Lab 14 FSK Demodulator
- Experiment 1 FSK Demodulator (Same parameters)
08 PSK MODULATION AND DEMODULATION MODULE
Lab 15 PSK Modulator
- Experiment 1 PSK Modulator (100 kHz, 200 bps, 100 Hz ~ 1 kHz)
Lab 16 PSK Demodulator
- Experiment 1 PSK Demodulator (100 kHz, 400–1000 bps)
09 QPSK MODULATION AND DEMODULATION MODULE
Lab 17 QPSK Modulator
- Experiment 1 Bit Splitter (100–1000 bps)
- Experiment 2 QPSK Circuit (20 kHz, 1000 bps)
Lab 18 QPSK Demodulator
- Experiment 1 PLL Circuit (20 kHz, 1000 bps)
- Experiment 2 QPSK Demodulation Circuit (20 kHz, 1000 bps)
10 DIGITAL SIGNAL PROCESSING MODULE
Lab 19 CVSD
- Sampling: 16 kHz ~ 50 kHz
- Audio: 100 Hz ~ 2 kHz
- TTL signals
Lab 20 Manchester Encoder / Decoder
- CLK: 500 Hz ~ 1 kHz
- Data Rate: 250 bps ~ 500 bps
ACCESSORY SETS
- 2mm Test Lead Set (30 units, 5 colors)
- 4mm Test Lead Set (10 units, 5 colors)
EXPERIMENT FRAME
- T-slot epoxy steel frame
- DIN A4 shelves
Dimensions:
UNIVERSAL LAB STATION
DC Supply:
- +5V, -5V, +12V, -12V
- Variable °23V
AC Supply:
- 19V–15V–9V–0–9V–15V–19V
Function Generator:
- 1Hz–1MHz
- Sine, Triangle, Square
OPTIONAL EQUIPMENT
- Digital Multimeter
- Digital Storage Oscilloscope
