Instructions for DSBSC Modulation

  • Step 1: Click on 'Generate Message' button to generate input message signal
  • Step 2: Then click on 'Generate Carrier' button to generate carrier signal
  • Step 3: The carrier frequency has to be more than the message frequency and You can change frequencies using sliders
  • Step 4: Click on 'Generate DSBSC Modulated Signal' button to generate DSBSC Modulated Signal

VCO

DATA

TTL

GAIN

fo

Vin

sin(wt)

AUDIO OSCILLATOR

SYNC

cos(wt)

TTL

sin(wt)

Multiplier

X

Y

KXY

TUNABLE LPF

CLK

TUNE

GAIN

IN

OUT

Scope Selector

A

B

-TRIG

A

B

Message Frequency

10

Carrier Frequency:

100




Instructions for DSBSC Demodulation

  • Step 1: Tunable LPF's Cutoff frequency works in accordance with the Message frequency
  • Step 2: Click on the 'Perform DSB-SC Demodulation' button to generate the demodulated signal
  • Step 3: Click on the 'Show Frequency Spectrums' button to see spectrums of the message, modulated, and demodulated signal

CH2-B

CH1-A

CH2-A

AUDIO OSCILLATOR

SYNC

cos(wt)

TTL

sin(wt)

Multiplier

X

Y

KXY

TUNABLE LPF

CLK

TUNE

GAIN

IN

OUT

Master Signals

100KHz sin

100KHz cos

100KHz TTL

sample TTL

message sin

Multiplier

X

Y

KXY