OBJECTIVES:
Amplitude shift keying modulator describes the technique the carrier wave is multiplied by the digital signal f(t).
Mathematically, the modulated carrier signal s(t) is:
s(t) = f(t) sin(2p fct + ? )
It is a special case of amplitude modulation (AM). Amplitude modulation has the property of translating the spectrum of the modulation f(t) to the carrier frequency. The bandwidth of the signal remains unchanged.
The fact that AM simply shifts the signal spectrum is often used to convert the carrier frequency to a more suitable value without altering the modulation. This process is
known variously as mixing, up-conversion or down-conversion. Some form of conversion will always be presents when the channel carrier occupies a frequency range outside the modulation frequency range.
This trainer consists of the following features.
Clock Generator:
*Output Wave form Square
*Frequency 100KHZ
*Amplitude 10V (P-P)
Audio Oscillator:
*Output Wave form Sine
*Frequency 200Hz-2KHz
*Amplitude 0-10V (P-P)
Power Supply: +5V/500mA, -5V/500mA
Dimension: 41.5cmsx31.5cmsx13.5cms
Weight: 750gms (app.)
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