Frequency Modulation & Demodulation

Description

Frequency Modulation & Demodulation

ProductCode: GE 423

Objective:

• Observe Change in the Carrier Frequency According to the Amplitude of

the Modulating Signal

• Calculate Modulation Index of the Modulated Signal.

• Recovery of Modulating Signal From Demodulator Circuit.

Technical Specifications:

• In Built IC based DC Regulated Power Supply +12V/ 2 50mA.

• On Board Sine Wave Audio Frequency Signal Generator

• Frequency: 2 KHz& 4KHz Amplitude: 0-2.8 Vpp

• Modulation using VCO 803S (Carrier generator internally 62KHz, 5.5Vpp)

• Demodulation Circuit Using Phase Locked Loop ICLM 565.

FSK Modulation & Demodulation

ProductCode: GE 424

Objective:

• To observe shift in frequency of carrier signal according to binary input i.e.

Digital clock signal.

• Recovery of modulating signal from demodulator circuit using phase

locked loop circuit.

Technical Specifications:

• In built IC based DC regulated power supply + 5V/300mA.

• On board square wave audio frequency signal generator.

• Frequency: 100Hz -1 KHz Amplitude: 0-30Vpp

• Modulation using IC 555 (Carriers generator internally 1.4KHz, 5Vpp).

• Demodulation using phase locked loop IC 565 (lock range 100Hz, 300Hz) and comparator IC 741.

Pulse Amplitude Modulation & Demodulation Trainer

ProductCode: GE425

Objective:

• Observe flat top samples, natural samples, sample & hold at

• differentsampling frequencies.

• Recoveryofmodulating signal from demodulatorcircuit.

Technical Specifications:

• In built IC based DC regulated power supply +12V, + 5V/ 300mA.

• On boa rd sine wave audio frequency signal generator

• Frequency: 1 KHz & 2KHz Amplitude: 0-10Vpp&0-4 Vpp

• On board sampling pulse generator

• Frequency:8KHz,16KHz,32KHz,64KHz Amplitude:5Vpp

• Modulation using IC 7555 multivibrator.

• Demodulation of PAM using 4th order / low pass filter & AC amplifter

using TL 074 with adjustable gain control

Technical Details