We are pleased to announce the Launch of Analog Communication System which allows the students to learn the fundamental concepts by building the Analog Communication System experiments at the Block Diagram level. Theory comes to life as they build different Modulators and Receivers. The System is completely self-contained with all required Modulating Signals, Carriers generated on Board and the students can connect respective functional blocks using patch-chord to build their required Modulation / Receiver Scheme. Waveforms can be displayed on a Digital Storage Oscilloscope which is generally available in the Laboratory. This System covers the complete Analog Communication Curriculum and serves as a very good practical learning board to teach the fundamentals of Analog Communication.
Specification:
a)GENERATOR BLOCK Function Generator 1: -Waveform: Sine, Square & Triangular -Frequency: 1Hz to 100 KHz, Variable -Amplitude: 0 to 2V, Variable Function Generator 2: -Waveform: Sine, Square & Triangular -Frequency: 1Hz to 100 KHz, Variable -Amplitude: 0 to 2V, Variable Carrier Generator 1: -Waveform: Square wave -Frequency: 1 KHz to 20 KHz, Variable -Amplitude: 2V, Fixed Carrier Generator 2: -Waveform: Square wave -Frequency: 1 KHz to 30 KHz, Variable -Amplitude: 2V, Fixed Voltage Controlled Oscillator (VCO) & FM Modulator: -Frequency: 400 KHz to 1500 KHz, Variable -Amplitude: 0 to 2V, Variable Voltage Controlled Oscillator (VCO2): -Frequency: 400 KHz to 1500 KHz, Variable -Amplitude: 0 to 2V, Variable b)MODULATOR BLOCK Balance Modulator 1: -Modulation: Amplitude modulation, Double sideband, single sideband (USB and LSB) -Carrier Input: 1-1000 Khz -Modulation Input: 0.1 - 100 KHz -Carrier Null: Adjustable -Output Amplitude: Adjustable Balance Modulator 2: -Modulation: Amplitude modulation, Double side band, Single side band (USB and LSB). -Carrier Input: 1MHz -Modulation Input: 400-500KHz -Carrier Null: Adjustable -Output Amplitude: Adjustable Colpitt's Oscillator: -1 MHz Sine Wave with variable amplitude 0 to 2V Ceramic Filter: -Central Frequency 460KHz -Bandwidth 10 KHz + / - 3 Khz Band Pass Filter: -Central Frequency 1.455MHz Bandwidth 10 KHz + / - 3 Khz FDM Transmitter: -Input 1 Band Pass Filter: 7KHz to 11 KHz Fc = 9KHz -Input 2 Band Pass Filter: 18KHz to 22KHz Fc = 20KHz, Pilot Carrier 256KHz -Pre-emphasis: Time Period with 50us Armstrong Modulator: 450 KHz Carrier -Generator with 90° Phase Shifter Phase Modulator: -Adjustable to 400KHz to 500KHz Reactance Modulator: -Reactance modulator with variable amplitude c) NOISE GENERATOR &FILTER BLOCK Noise Generator Adder: -Adjustable from 0V to maximum input value signal+ -Noise Adder stage 0 to 4V white noise Sweep Generator: -Sweep frequency-10Hz, -Sweep depth -Adjustable -Output for oscilloscope -X axis RF/Spectrum Detector: -Minimum. -Input- 100mVpp, Adjustable Band Pass Filter: Frequency Range 7KHzto 13KHz High Pass Filter: Cutoff Frequency 3.4 KHz Band Reject Filter: Frequency Range 7KHzto 13KHz Matched T Filter: Cutoff Frequency 20 Khz Matched II Filter: Cutoff Frequency 20 Khz d) TRANSMISSION via ANTENNA and APPLICATION BLOCK Antenna: Ferrite Rod &MW coil Output Amplifier: 600 KHz to 1650 KHz with adjustable gain Audio Pre-amplifier: Audio pre-amplifier with Microphone and adjustable gain ANALOG COMMUNICATION.
