Features of Optical Fibers Communication Trainer:
Textbook includes the theoretical & practical details
Textbook includes the expected results for reference
Problem discussion attached together with answers for instructor
Only need Oscilloscope & Spectrum analyzer to obtain the measured results
( not included )
Specifications :
Module One : Transmitter Module
Transmitted light wavelength : 660 nm & 820 nm
Data rate : 1 Mbps
Transmitter bandwidth : 1 MHz
Includes digital & analog transmitter, and also covers with E/O conversion circuit
Built in microphone input terminal and audio amplifier
Built in sine wave output signal, and also includes tunable amplitude and frequency output
Amplitude : 2Vpp, Frequency : 100Hz ~ 2.5KHz
Built in digital data generator, used to produce TTL signal & CMOS level output
The wavelength of optical fibers transmission line : 500nm ~ 1200nm; ST & DIN connectors
Module Two : Receiver
Received light wavelength : 660 nm & 820 nm
Data rate : 1 Mbps
Transmitter bandwidth : 1 MHz
Includes digital & analog receiver, and also covers with E/O conversion circuit
Provided with tunable amplifier, which can drive the 8 ohm loud speakers
The wavelength of optical fibers transmission line : 500nm ~ 1200nm; ST & DIN connectors
Module Three : Computer Control Module
Transmitter interface : RS-232
Transmission baud rate : 9600bps
Type of display : LCD 16×2 characters
Ability to display numerals and English characters
Input interface : 4 x 4 keypad
Serial characters can be inputted from keypad
Includes data transmission operations software
The operation software environment : Windows
Keypad switch provides with normal open type
Provides with LED indicator function
Module Four : Analog and Digital Signal Modulations Module
AM Modulation & Demodulation :
(1) AM Modulation : Carrier signal : 540KHz ~ 1600KHz
Audio frequency signal : 1KHz ~ 2KHz
(2) AM Demodulation : Carrier signal : 540KHz ~ 1600KHz
Audio frequency signal : 1KHz ~ 2KHz
Modulation index : 50%
FM Modulation & Demodulation :
(1) FM Modulation : Carrier signal : 20 KHz
Audio frequency signal : 1KHz ~ 5KHz
(2) FM Demodulation : Nature frequency : 20 KHz
Audio frequency signal : 1KHz ~ 3KHz
ASK Modulation & Demodulation :
(1) ASK Modulation : Carrier signal : 20 KHz ~ 100KHz
Data signal : 100bps ~ 1kbps
(2) ASK Demodulation : Carrier signal : 20 KHz ~ 100KHz
Data signal : 100bps ~ 1kbps
FSK Modulation & Demodulation :
(1) FSK Modulation : Space signal : 1370 Hz
Mark signal : 870 Hz
Data signal : 100bps ~ 500bps
(2) FSK Demodulation : Space signal : 1370 Hz
Mark signal : 870 Hz
Data signal : 100bps ~ 500bps
Module Five : Digital Signal Processing Module
(1) Signal Source Encoder & Decoder (CVSD) : Sampling frequency : 16KHz ~ 50KHz
Audio frequency signal : 100Hz ~ 2KHz
TTL input & output level signals
(2) Channel Encoder & Decoder (Manchester) : Input TTL level signal
CLK : 500Hz ~ 1KHz
Data Rate : 250bps ~ 500bps
Module Six : TV Signal Modulator and Demodulator
(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
Built in low pass filter to remove the noise of the audio signal
(3) TV Signal De-Modulator : Audio signal : FM demodulating signal
FM carrier signal : 5.5 MHz
Built in audio signal generator,
output frequency : 100Hz ~ 1KHz,
output amplitude : 600mV ~ 1.2 V
Function Generator
Ports : Two signal outputs ports
Frequency range : 10Hz ~ 100KHz
100Hz ~ 1MHz
Waveforms : Sine, Triangle, Square, TTL Plus
Amplitude : 10Vpp
Built In 6 digit frequency counter
Large 0.5 LED / LCD display
Overload protection
D C POWER SUPPLY
Triple bipolar voltage outputs
Consultant voltage operation
Low ripple & noise
Constant voltage output : ±5V, ±12V
Variable voltage output : 0V ~ ±15V
