TB230621S08 is a comprehensive experimental system carefully designed according to the content of the national electronic textbook "Communication Principles" and "Communication Principle Experiment". The experimental content is substantial, rich and complete. The board diagram is clear, which is convenient for wiring and testing.
1. Main functional components
1. Provide DC regulated power supply ±15V/0.5A; ±6V/0.5A; ±12V/0.5A, six circuits in total.
2. The main controller of the system composed of CPU microprocessor and circuit interface
3. The 8-bit digital tube is used to display the experimental status and results of the system
4. The membrane keyboard with 16 keys is used to set the signal and experiment mode
5. A variety of digital signal generation circuits designed with CPLD
6. Frame synchronization signal identification and extraction circuit
7. Pseudo-random code and special code generating circuit
8. Low frequency sine wave signal generator
9. CPU microprocessor and circuit interface
10. Sampling theorem and pulse-amplitude modulation (PAM) circuit modules
11. Pulse code modulation (PCM) circuit module
12. Incremental modulation (M) codec circuit module
13. Phase-shift keying PSK demodulation receiving and modulation sending circuit module
14. HDB3 code-shape conversion circuit module, which has three parts: sub-clock, encoding and decoding
15. FSK power line carrier communication circuit module
16. Digital communication system ADPCM clock, ADPCM input and output, ADPCM receiving, ADPCM sending circuit modules.
2. Experimental content
1. Various digital signal generation and formation experiments
2. Frame synchronization signal recognition, extraction and analysis experiments
3. Pseudo-random code and special code observation measurement analysis experiment
4. Synchronous sine wave signal generation and application experiment
5. CPU microprocessor and circuit interface experiment
6. Communication system principle circuit module operation experiment
7. Communication channel terminal transmission amplification experiment
8. The receiving filter experiment of communication channel terminal
9. Sampling Theorem Experiment
10. Pulse amplitude modulation (PAM) and system experiments.
11. The experiment of observing A-law PCM eight-bit encoding with synchronous source signal
12. Pulse code modulation (PCM) and system experiments
13. PCM code time division multiplexing timing analysis experiment
14. Incremental modulation CVSD (△M) coding experiment
15. Conduct (△M) coding comparison experiment under variable clock state
16. Continuous variable slope incremental modulation (△M) decoding experiment
17. Incremental modulation (△M) system characteristics and index test experiments
18. Comparative experiment of (PCM and △M) system performance under the same conditions
19. Frequency keying (FSK) modulation and demodulation experiments
20. Two-phase BPSK modulation and demodulation experiment
21. Two-phase DPSK modulation and demodulation experiment
22. PSK carrier extraction experiment
23. Signal code regeneration experiment
24. Bit synchronization and bit timing extraction experiments
25. Eye pattern observation and analysis experiment
26. CPU simulation eye diagram observation and measurement experiment
27. Basic PLL experiment
28. Bandwidth measurement experiment of timing belt and capture belt
29. Trivial phase digital frequency synthesizer experiment
30. HDB3 code conversion coding and decoding observation experiment
31. Comprehensive experiment of voice signal and communication system principle
32. Single experiment box realizes simplex communication system experiment
33. Two experimental boxes realize duplex communication system experiment
