Fiber Optic Communication Trainers - Troper Electronic Sdn Bhd

FOCT-5000

1. Textbook includes the theoretical and practical details.
2. Textbook includes the expected results for reference.
3. Problem discussion attached together with answers for instructor.
4. Only need oscilloscope and spectrum analyzer to obtain the measured results.

Module One: Transmitter Module (FOCT-5000-01)
1. Transmitted light wavelength: 660 nm and 820 nm.
2. Data rate: 1 Mbps.
3. Transmitter bandwidth: 1 MHz.
4. Includes digital and analog transmitters, and also covers with E/O conversion circuit.
5. Built-in microphone input terminal and audio amplifier.
6. Built-in sine wave output signal, and also includes tunable amplitude and frequency output. Amplitude: 2 Vpp; Frequency: 100 Hz ~ 2.5 kHz.
7. Built-in digital data generator, used to produce TTL signal and CMOS level output.
8. The wavelength of optical fibers transmission line: 500 nm ~ 1200 nm; ST and DIN connectors.

Module Two: Receiver Module (FOCT-5000-02)
1. Received light wavelength: 660 nm and 820 nm。
2. Data rate: 1 Mbps。
3. Receiver bandwidth: 1 MHz
4. Includes digital and analog receivers, and also covers with O/E conversion circuit.
5. Provided with tunable amplifier, which can drive the 8 W loud speaker.
6. The wavelength of optical fibers transmission line: 500 nm ~ 1200 nm; ST and DIN connectors.

Module Three: Analog and Digital Signal Modulations Modules (FOCT-5000-03)
1. AM Modulation and Demodulation
(1)AM Modulation:
a. Carrier Signal: 540 kHz~1600 MHz.
b. Audio Frequency Signal: 1 kHz~2 kHz.
(2) AM Demodulation:
a. Carrier Signal:540 kHz ~ 1600 kHz.
b. Audio Frequency Signal: 1 kHz ~ 2 kHz.
c. Modulation Index: 50%.
2. FM Modulation and Demodulation:
(1)FM Modulation:
a. Carrier Signal: 20 kHz.
b. Audio Frequency Signal: 1 kHz~5 kHz.
(2)FM Demodultaon:
a. Nature Frequency: 20 kHz.
b. Audio Frequency Signal: 1kHz~3 kHz.
3. ASK Modulation and Demodulation
(1)ASK Modulation:
a. Carrier Signal: 20 kHz ~100 kHz.
b. Data Signal: 100bps ~ 1 kbps.
(2)ASK Demodulation:
a. Carrier Signal: 20 kHz ~ 100 kHz.
b. Data Signal: 100bps ~ 1 kbps.
4.FSK Modulation and Demodulation
(1)FSK Modulation:
a. Space Signal: 1370 Hz.
b. Mark Signal: 870 Hz.
c. Data Signal: 100bps ~ 500bps.
(2)FSK Demodulation:
a. Space Signal: 1370 Hz.
b. Mark Signal: 870 Hz.
c. Data Signal: 100 bps ~ 500 bps.

Module Four: Digital Signal Processing Module (FOCT-5000-04)
(1)Signal Source Encoder and Decoder (CVSD)
a. Sampling Frequency: 16 kHz ~ 50 kHz.
b. Audio Frequency Signal: 100 Hz ~ 2 kHz.
c. TTL input and output level signals.
(2)Channel Encoder and Decoder (Manchester)
a. Input TTL level signal.
b. CLK: 500 Hz~1 kHz.
c. Data Rate:250 bps~500 bps.

Module Five: Module Six: TV Signal Modulator and Demodulator (FOCT-5000-05)
(1)TV Signal Generator:
a. Built-in 4 MHz quartz crystal oscillator.
b. 8 selected types of TV signal.
c. Output signal: ladder wave signal.
d. Output frequency: 15.6 kHz.
(2)TV Signal Modulator:
a. Audio signal: FM modulating signal.
b. FM carrier signal: 5.5 MHz.
c. Horizontal signal is demodulated by using the band-reject filter
d. Built-in low-pass filter to remove the noise of the audio signal
(3)TV Signal Modulator:
a. Audio signal: FM modulating signal.
b. FM carrier signal: 5.5 MHz.
c. Built-in audio signal generator. Output frequency: 100Hz ~ 1 kHz; Output
amplitude: 600 mV ~ 1.2V.
d. TV Signal: FM signal plus TV system horizontal signal