To Generate the DSB-SC Modulated wave and to Observe the Phase Reversal at the
Zero Crossing of the Modulating Signal [MOD-13]
Balanced modulator is used for generating DSB-SC signal. A balanced modulator consists of two standard amplitude modulators arranged in a balanced configuration so as to suppress the carrier wave. The two modulators are identical except the reversal of sign of the modulating signal applied to them.
Technical Specification :
(i) Trainer kit that has inbuilt Modulator and De-modulator circuit using IC 1496
Wide frequency response up to 100 MHz and Internal power dissipation – 500mw(MAX)
(ii) CRO 30MHz or Above
(iii) Inbuilt Function Generator 100KHz
(iv) Regulated Power Supply 0-12V, 500mA
(v) Patch Cords
(vi) Instructional manual
To Generate the SSB-SC Modulation and Demodulation [MOD-14]
An SSB signal is produced by passing the DSB signal through a highly selective band pass filter. This filter selects either the upper or the lower sideband. Hence transmission bandwidth can be cut by half if one sideband is entirely suppressed. This leads to single-sideband modulation (SSB).
Technical Specifications::
- Trainer kit that has inbuilt Modulator and De-modulator circuit IC 1496Wide frequency response up to 100 MHzInternal power dissipation – 500mw(MAX)
- CRO 30MHz or Above
- Inbuilt Function Generator and Audio Frequency Generator
- Regulated Power Supply 0-12V, 500mA
- Patch Cords
- Instructional manual
To Generate Pulse Amplitude Modulated (PAM) Signal and Demodulate it [MOD-16]
PAM is the simplest form of data modulation .The amplitude of uniformly spaced pulses is varied in proportion to the corresponding sample values of a continuous message .
A PAM waveform consists of a sequence of flat-topped pulses. The amplitude of each pulse corresponds to the value of the message signal at the leading edge of the pulse. The pulse amplitude modulation is the process in which the amplitudes of regularity spaced rectangular pulses vary with the instantaneous sample values of a continuous message signal in a one-
one fashion.
Technical Specifications:
(i) PAM Trainer kit that has inbuilt Modulator and De-modulator circuit.
(ii) Inbuilt Function Generator of 100 KHz and Carrier Generator of 400KHz
(iii) CRO – 30 MHz or Above
(iv) DC power supply 12V/500mA
(v) Patch Cords
(vi) Instructional manual
To Generate Pulse Position Modulated (PPM) Signal and Demodulate it [MOD-17]
In Pulse Position Modulation, both the pulse amplitude and pulse duration are held constant but the position of the pulse is varied in proportional to the sampled values of the message signal. In PPM the analog sample value determines the position of a narrow pulse relative to the clocking time. In PPM rise time of pulse decides the channel bandwidth. It has low noise interference.
Technical Specifications::
(i) PPM Trainer kit that has inbuilt Modulator and De-modulator circuit
(ii) Inbuilt Function Generator of 10 KHz
(iii) CRO – 30 MHz or Above
(iv) DC power supply 12V/500mA
(v) Patch Cords
(vi) Instructional manual
To generate Pulse Width Modulated (PWM/PTM/PLM/PDM) Signal and Demodulate it. [MOD-18]
Pulse Time Modulation is also known as Pulse Width Modulation or Pulse Length Modulation. In PWM, the samples of the message signal are used to vary the duration of the individual pulses. Width may be varied by varying the time of occurrence of leading edge, the trailing edge or both edges of the pulse in accordance with modulating wave. It is also called Pulse Duration Modulation.
Technical Specifications::
(i) PWM Trainer kit that has inbuilt Modulator and De-modulator circuit.
(ii) Inbuilt Function Generator
(iii) CRO – 30 MHz or Above
(iv) DC power supply 12V/500mA
(v) Patch Cords
(vi) Instructional manual
Superheterodyne Radio Receiver Trainer Kit
Experiment: To Study the Characterstics Of A Superheterodyne Radio Receiver.
Superheterodyne Radio Receiver Trainer Kit
Experiment: Study of Medium Wave Superheterodyne Radio Receiver
