Home > Products > COMMUNICATION TRAINING SYSTEM > Basic Communication Trainers

Basic Communications Trainer BCT-2000 Downloadable Data Sheet   Features Ideal for teaching basic communications concepts. Integrated training system, with complete curriculum. Covers analogue and digital communications. 8 modules form basis for over 14 fully documented experiments. Optional rack frame, storage cabinet, RF generator, and oscilloscope available. This training system includes the basic modules allowing students to experiment on ground-level telecommunications topics. The purpose of the system is to enable students to acquire clear experimental views of the basic concepts, and a familiarization with the operational aspects, of work in a telecommunications laboratory. Analogue Communications Modules Four analogue communications modules are included in the BCT-2000 system, as follows:   BCT-2000-01 RF Oscillator Oscillator frequency (calculated): 500kHz, 10MHz Oscillator frequency (measured): 450kHz, 7MHz Power supply: +12V, -12V Second Order LPF and HPF Low pass -3dB frequency: 1kHz to 10kHz High pass -3dB frequency: 800Hz to 8kHz Power supply: +12V, -12V   BCT-2000-02 AM Modulator Carrier signal: 500kHz to 3MHz Audio signal: 1kHz to 3kHz Power supply: +12V, -5V AM Demodulator Carrier signal: 300kHz to 3MHz Audio signal: 1kHz to 3kHz Power supply: +12V, -12V   BCT-2000-03 DSB-SC and SSB Modulator DSB-SC Modulator: Carrier signal: 500kHz to 1MHz Audio signal: 1kHz to 2kHz Power supply: +12V, -5V SSB Modulator: Carrier signal: 453kHz Audio signal: 1kHz to 2kHz Power supply: +12V, -5V DSB-SC and SSB Demodulator DSB-SC Demodulator: Carrier signal: 500kHz Audio signal: 1kHz to 3kHz Power supply: +12V SSB Demodulator: Carrier signal: 453kHz Audio signal: 2kHz Power supply: +12V   BCT-2000-04 FM Modulator MC1648 Modulator: Carrier signal: 2MHz to 3MHz Audio signal: 3kHz to 8kHz Power supply: +5V LM566 Modulator: Carrier signal: 2kHz to 20kHz Audio signal: 1kHz to5kHz Power supply: +5V, -5V FM Demodulator LM565 Demodulator: Carrier signal: 2kHz to 20kHz Audio signal: 1kHz to 5kHz Power supply: +5V, -5V FM to AM Demodulator: Carrier signal: 500kHz to 2MHz Audio signal: 1kHz to 5kHz Power supply: +5V, -5V   Digital Communications Modules Three digital communications modules are included in the BCT-2000 system, as follows:   BCT-2000-05 Analogue to Digital Converter Resolution: 8 bits, 256 steps Clock frequency: 100kHz to 800kHz Input voltage range: 0V to 5V Power supply: +5V Digital to Analogue Converter Digital input: 8 bits, 256 steps Output voltage: single or bipolar Power supply: +12V, -12V   BCT-2000-06 PWM Modulator Using LM741 PWM: Carrier signal: 1.5kHz to 2kHz Audio signal: 500Hz Power supply: +12V, -12V Using 555 PWM: Carrier signal: 5kHz to 10kHz Audio signal: 1kHz Power supply: +12V PWM Demodulator Modulation signal: 5kHz to 6kHz Audio signal: 500Hz to 700Hz Demodulation signal: 500Hz to 700Hz Power supply: +12V   BCT-2000-07 FSK Modulator Space signal: 1270Hz Mark signal: 1070Hz Output voltage: 0V to 5V Power supply: +12V, -12V FSK Demodulator Space signal: 1270Hz Mark signal: 1070Hz Output voltage: 0V to 5V Power supply: +5V, -5V   Multi Output DC Power Supply and Signal Generator Main Unit   A Main Unit contains the Multi Output DC power supply and Multi Signal generator, Frequency Counter, DC Voltmeter for the BCT-2000 system, as follows:   Main Unit MSG-1500 Fixed DC Power Supply +5V at 1A -5V at 1A +12V at 1A -12V at 1A Variable DC Power Supply +0V to +25V at 1A -0V to -25V at 1A 1MHz Audio Signal Generator (Channel 1) Sine, Triangle and Square waveform output Frequency range : 1Hz to 1MHz in 6 decades With fine adjust Frequency, Amplitude and DC offset control Six frequency ranges:      1Hz to 10Hz      10Hz to 100Hz      100Hz to 1KHz      1KHz to 10KHz      10KHz to 100KHz      100KHz to 1MHz Sine wave output: 0 to 12V peak to peak variable Triangle wave output: 0 to 9V peak to peak variable Square wave output: 0 to 22V peak to peak variable   15MHz Carrier Signal Generator (Channel 2) Sine, Triangle, Square, TTL Pulse, AM & FM waveform output Amplitude : ¡Ý10Vpp Impedance : 50¦¸ ¡À10% Duty Control : <100KHz (30% ~ 60%) Frequency Range :      10 Hz to 100KHz (4 Ranges)      1KHz to 15MHz (4 Ranges) Frequency Control :      Separate Coarse and Fine Tuning Modulation Signal Output :       AM Signal & FM Signal Frequency Counter:      LCD Internal Frequency Counter      Range : 1Hz ~ 120KHz, 100Hz ~ 16MHz      Accuracy : ¡À5%      Resolution : 1Hz, 10Hz, 100Hz, 1KHz, 10KHz   Digital DC Volt Meter   4 Digits LED display Four voltage ranges :      0V to 199.9VDC      0V to 19.99VDC      0V to 1.999VDC      0V to 199.9mVDC Input Impedance: 10Mohm for any range   Experimental Cover : Analogue Communications RF Oscillator Experiments a. Colpitts Oscillator b. Hartley Oscillator Second Order LPF and HPF Experiments a. Second Order LPF b. Second Order HPF AM Modulator Experiment AM Demodulator Experiment DSB-SC and SSB Modulator Experiments DSB-SC and SSB Demodulator Experiments FM Modulator Experiments a. Measuring MC1648 Voltage Control Oscillator (VCO) Characteristics b. Implementing FM Modulator using MC1648 c. Measuring VCO Characteristics d. Implementing FM Modulator using LM566 FM Demodulator Experiment a. Measuring LM565 Phase-Lock Loop (PLL) Circuit Characteristics b. LM565 PLL Circuit Voltage and Frequency Exchange Characteristics c. Implementing FM Demodulator using LM565 d. FM Demodulator by FM to AM discriminator Digital Communications Analogue to Digital Experiments a. ADC0804 A/D Converter b. ADC0809 A/D Converter Digital to Analogue Experiments a. DAC0800 Unipolar Output b. DAC0800 Bipolar Output PWM Modulator Experiments a. LM741 PWM b. LM555 PWM PWM Demodulator Experiment FSK Modulator Experiment FSK Demodulator Experiment   Note : Specification May Vary Without Prior Notices