A specialized communication trainer for analyzing noise behavior in analog systems, featuring built-in noise generation, SNR and noise figure measurement, low-pass filtering, and signal-plus-noise experimentation. Ideal for practical understanding of noise impact and spectral density evaluation in communication circuits.
Onboard clock generator
Carrier generator 1KHz ~ 30KHz.
Pilot carrier 256KHz.
2 channel FDM communication system.
DSB AM Modulator and Demodulator.
Band pass filters 9 ~ 11KHz and 16 ~ 20KHz
4th order Butter-worth Low Pass Filters.
Carrier generator
Subcarrier: 1 KHz ~ 20 KHz and 1 KHz ~ 30 KHz with adjustable Frequency pot
Pilot carrier: 256 KHz.
Transmitter: High-frequency transmission using DSB.
Multiplexing: Frequency division Multiplexing
Channel: 02
Band pass filter
Passband :Filter 1 and 3 frequency range 8 ~ 12 kHz with fc ~ 10 kHz
Filter 2 and 4 frequency range 18 ~ 22 kHz with fc ~ 20 kHz
AM /DM Modulator
Modulation: Amplitude Modulation double side band
Receiver: Amplitude Demodulation of DSB
De-multiplexing: Frequency division De-multiplexing
Low pass filter
4 order butter worth filter
Switch Faults
8 switch faults are provided on board to study different effects on circuit.
Interconnection
2mm banana socket.
Test points
25 test points are provided to observe various intermediate signals.
Power Supply
GND,+5V, +12V, -12V
To study the frequency response of bandpass filters.
Study of DSB modulation.
To study the operation of frequency division multiplexing.
Study of DSB demodulation.
To study the operation of frequency division demultiplexing.
To study the effects of out-of-band signaling.
To study the effect of switch faults.
To study voice communication through FDM (optional).
