DESCRIPTIONS :

PRODUCT ACCESSORIES

Module One: Transmitter Module • Transmitted light wavelength: 660nm & 820nm • Data rate: 1 Mbps • Transmitter bandwidth: 1 MHz • Includes digital & analog transmitter with E/O conversion circuits • Built-in microphone input terminal and audio amplifier • Built-in sine wave output signal with tunable amplitude and frequency output (Amplitude: 2Vpp; Frequency: 100Hz ~ 2.5kHz) • Built-in digital data generator to produce TTL signal & CMOS level output • Fiber optic transmission line wavelength: 500nm ~ 1200nm; ST & DIN connectors Module Two: Receiver Module • Receiving light wavelength: 660 nm & 820nm • Data rate: 1 Mbps • Receiver bandwidth: 1 MHz • Includes digital & analog receivers with E/O conversion circuits • Provided with tunable amplifier, able to drive 8 ohms loud speaker • Fiber optic transmission line wavelength: 500nm ~ 1200nm; ST & DIN connectors Module Three: Computer Control Module • Transmission interface: RS232 • Baud rate: 9600 bps • LCD Display 16 x 2 characters • 4 x 4 Keypad input interface • Serial characters can be keyed in from keypad • Data transmission operation software included (Windows based) • LED indicator • Note: Required a computer (optional item) for this function Module Four: Analog & Digital Signal Modulation Module 1. AM Modulation & Demodulation a. AM Modulation: • Carrier Signal: 540kHz ~ 1600kHz, Audio Frequency Signal: 1kHz ~ 2kHz b. AM Demodulation: • Carrier Signal: 540kHz ~ 1600kHz, Audio Frequency Signal: 1kHz ~ 2kHz, Modulation Index: 50% 2. FM Modulation & Demodulation a. FM Modulation: • Carrier Signal: 20kHz, Audio Frequency Signal: 1 kHz ~ 5 kHz b. FM Demodulation: • Nature Frequency: 20 kHz, Audio Frequency Signal: 1 kHz ~ 3 kHz 3. ASK Modulation & Demodulation a. ASK Modulation: • Carrier Signal: 20 kHz ~ 100 kHz, Data Signal: 100 bps ~ 1 kbps b. ASK Demodulation: • Carrier Signal: 20 kHz ~ 100 kHz, Data Signal: 100 bps ~ 1 kbps 4. FSK Modulation & Demodulation: a. FSK Modulation: • Space Signal: 1370 Hz, Mark Signal: 870 Hz, Data Signal: 100 bps ~ 500 bps b. FSK Demodulation: • Space Signal: 1370 Hz, Mark Signal: 870 Hz, Data Signal: 100 bps ~ 500 bps Module Five: Digital Signal Processing Module 1. Signal Source Encoder & Decoder (CVSD) • Sampling Frequency: 16 kHz ~ 50 kHz, Audio Frequency Signal: 100 Hz ~ 2 kHz, TTL input & output level signals 2. Channel Encoder & Decoder (Manchester) • TTL input level signal, Clock: 500 Hz ~ 1 kHz, Data Rate: 250 bps ~ 500 bps Module Six: TV Signal Modulator and Demodulator - Optional 1. TV Signal Generator • Built-in 4 MHz quartz crystal oscillator • 8 selected types of TV signal • Output signal: ladder wave signal • Output frequency: 15.6 kHz 2. TV Signal Modulator • Audio signal: FM demodulating signal • FM carrier signal: 5.5 MHz • Horizontal signal is demodulated by using the band-reject filter • Built-in low-pass filter to remove the noise of the audio signal 3. TV Signal Modulator • Audio signal: FM modulating signal • FM carrier signal: 5.5 MHz • Built-in audio signal generator: - Output frequency: 100 Hz ~ 1 kHz - Output amplitude: 600 mV ~ 1.2 V 4. TV Signal: FM signal plus TV system horizontal signal FUNCTION GENERATOR & POWER SUPPLY UNIT(OPTIONAL) SPECIFICATION: 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

MODULE SPECIFICATION

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