DESCRIPTIONS :

PRODUCT ACCESSORIES

Module One: PAM Modulator & Demodulator A. PAM Modulator • Sampling Rate: 10 kHz ~ 20 kHz • Sampling Signal Format: TTL Waveform • Audio Signal: 1 kHz ~ 2 kHz • Audio Input Format: Sine Waveform • Modulation Output Format: Pulse Waveform • Adjustable Amplitude of Output Signal B. PAM Demodulator • Sampling Rate: 10 kHz ~ 20 kHz • Sampling Signal Format: TTL Waveform • Audio Signal: 1 kHz ~ 2 kHz • Built-in Low-pass Filter-3 dB Frequency: 1 kHz ~ 3 kHz Module Two: PPM Modulator & Demodulator A. PPM Modulator • Sampling Rate: 30 kHz ~ 45 kHz • Sampling Signal Format: Triangle Waveform • Audio Signal: 1 kHz ~ 2 kHz • Audio Input Format: Sine Waveform • Modulation Output Format: Pulse Waveform B. PPM Demodulator • Sampling Rate: 30 kHz ~ 45 kHz • Sampling Signal Format: Triangle Waveform • Audio Signal: 1 kHz ~ 2 kHz • Built-in Low-pass Filter -3 dB Frequency: 1 kHz ~ 3 kHz Module Three: DPSK Modulator & Demodulator A. DPSK Modulator • Clock: 200 Hz ~ 400 Hz • Clock Format: TTL Waveform • Data Rate: 100 bps ~ 200 bps • Data Input Format: Serial Input • Carrier Signal: 20 kHz • Data Signal Format: TTL Waveform • Built-in Data Simulation Generator • Built-in Differential Encoding Generator B. DPSK Demodulator • Clock: 200 Hz ~ 400 Hz • Clock Format: TTL Waveform • Data Rate: 100 bps ~ 200 bps • Data Output Format: Serial Output • Carrier Signal: 20 kHz • Built-in Differential Decoding Generator Module Four: FHSS Spread Spectrum Encoder & Decoder A. FHSS Spread Spectrum Encoder • Data Setting Length: 12 bits • Data Input Mode: Press-button Switch • Data Display Mode: LED Display • Channel Indicator: LED Display • Carrier Frequency: 20 kHz, 40 kHz, 60 kHz • Adopting ASK Modulation Structure B. FHSS Spread Spectrum Decoder • Data Display Length: 12 bits • Data Display Format: LED Display • Channel Indicator: LED Display • Carrier Frequency: 20 kHz, 40 kHz, 60 kHz • Adopting Active Mode Structure Demodulation Module Five: HF PLL Circuit & RF PLL Circuit A. HF PLL Circuit • Reference Clock Frequency: 1 MHz • Divider Ratio of Programmable Reference Clock: 1 ~ 100 • Divider Ratio of Programmable Counter: 1 ~ 100 • Divider Ratio Setting: DIP Switch • Output Frequency Range: 20 kHz ~ 1.2 MHz • HF PLL IC: 4046 B. RF PLL Circuits • Reference Clock Frequency: 6 MHz • Programmable Reference Clock Frequency: 12.5 kHz • Input Frequency Setting: Keypad • Output Locked Frequency: 800 MHz, 812 MHz, 825 MHz • Text Information Display: LCD Display • Controlled Values of Programmable Counter Being Generated from 89C51 • RF PLL IC: MB15E03 Module Six: MSK Modulator & Demodulator A. MSK Modulator • Audio Signal: 2 kHz • Modulation Index Selector: DIP Switch • Modulation Index: 0.5, 0.7, 1 • Input Signal Format: TTL Waveform • Modulation Output Signal Format: Sine Waveform B. MSK Demodulator • Audio Signal: 2 kHz • Output Signal Format: TTL Waveform • Modulation Index: 0.5, 0.7, 1 • Nature Frequency: 10 kHz ~ 30 kHz • Phase Locked Frequencies Range: 18 kHz ~ 22 kHz • Phase Capture Frequencies Range: 18.5 kHz ~ 21.5 kHz

MODULE SPECIFICATION

POWER SUPPLY & FUNCTION GENERATOR SPECIFICATION (OPTIONAL ITEM) A. Power Supply: - Variable Voltage Output: 0 ~ ± 12VDC/0.5A - Fixed Voltage Output: ± 5VDC(0.3A); ± 12VDC(0.3A) - Triple Bipolar Voltage Outputs - Constant Voltage Operations - Low Ripple & Noise B. Function Generator: - Two signal output ports - Waveforms: Sine, Triangle, Square, TTL Pulse - Amplitude: >10Vpp - Impedance: 50Ω ± 10% - Duty Control: 30% - 60% - Frequency Range: 10Hz ~ 100kHz (4 Ranges) 100Hz ~ 1MHz (4 Ranges) - Accuracy: ± Time Base Count ± Count - Time Base: 60Hz Oscillation Frequency - Resolution: 0.1Hz, 1Hz, 10Hz, 100Hz, 1kHz - Frequency Control: Separate Coarse & Fine Tuning - Large 0.5” LED Display - Overload Protection - Built-in 6 Digits Frequency Counter - Connection using 4mm sockets - Power Requirements: 240VAC/50Hz

• Manual includes theory, operation and lab experiments (with model answers) • Connecting lead cables(1 set) • Mounting frame rack (1 set) - Optional