Understanding Digital Communication Principles Scientech TechBooks are compact and user friendly learning platforms to provide a modern, portable, comprehensive and practical way to learn Technology. Each TechBook is provided with detailed Multimedia learning material which covers basic theory, step by step procedure to conduct the experiment and other useful information. The digital revolution has resulted in many digital communication applications where the principles of data transmission are applied. These portable learning platform series provides a modern, Comprehensive and practical subject content of the field of digital communication. Using extensive hands on practice on different topics covered in these handy self contained TechBooks, students can understand the subject in a better way. www.ScientechWorld.com s
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UnderstandingDigitalCommunicationPrinciples
Scientech TechBooks are compact and user friendly learning platforms to provide a modern, portable, comprehensive and practical way to learn Technology. Each TechBook is provided with detailed Multimedia learning material which covers basic theory, step by step procedure to conduct the experiment and other useful information.
The digital revolution has resulted in many digital communication applications where the principles of data transmission are applied. These portable learning platform series provides a modern, Comprehensive and practical subject content of the field of digital communication.
Using extensive hands on practice on different topics covered in these handy self contained TechBooks, students can understand the subject in a better way.
www.ScientechWorld.com
s
Features?PCM, DPCM, CVSD Modulator and Demodulator on same board
?On-board DDS Signal Generator for standard and Arbitrary signals
?Selectable sampling frequencies with respective line speed
?On board Transmission effect
?On board 2nd order Butterworth Low Pass filter
? SMD LED indicators
?Can be issued just like a book for hands-on learnings
?2 Year Warranty
Features?Modulator and Demodulator on same board
?Different type of sampling, Natural, Flat top, sampled and hold
?On-board DDS Signal Generator for standard and arbitrary signals
?Selectable sampling frequencies for PAM
?Selectable Ramp frequencies for PWM and PPM
?On board 2nd order Butterworth low pass filter
?SMD LED Indicators
?Can be issued just like a book for hands-on learnings
?2 Year Warranty
Scientech 2802
Scientech 2801
PAM, PPM, PWM and Line Coding Techniques
PCM output Filter effect
PCM, DPCM, CVSD Modulator & Demodulator
Scientech TechBook 2801 provides an extensive hands on learning on PAM, PPM, PWM and Line Coding Techniques.
Scientech TechBook 2802 provides an extensive hands on learning on PCM, DPCM, CVSD Modulator & Demodulator.
Natural Sampled Output PWM Output
Features?Modulator and Demodulator on same board?On-board DDS Signal Generator for standard and Arbitrary signals?Selectable Sampling Frequencies?On board Transmission effect?Selectable step size for Integrator?Detailed study of granular noise and slope overloading?On board 2nd order Butterworth Low Pass filter?SMD LED Indicators?Can be issued just like a book for hands-on learning?2 Year Warranty 4-Channel TDM-PCM Transmitter & Receiver
Features?TDM-PCM Transmitter & Receiver on same board
?On-board four DDS Signal Generator for standard and Arbitrary signals
?Selectable Sampling frequencies
?On board four 2nd order Butterworth Low Pass filter
?SMD LED indicators
?Compact and Light Weight
?Can be issued just like a book for hands-on learning
?2 Year Warranty
Scientech TechBook 2804 provides an extensive hands on learning on 4-Channel and 2-Channel TDM-PCM Transmitter & Receiver.
Granular noise effect Slope overload effect
Variable step size
Scientech 2804
Scientech TechBook 2803 provides an extensive hands on learning on Delta, Adaptive Delta, Sigma Delta Modulator & Demodulator.
Delta, Adaptive Delta, Sigma Delta Modulator & Demodulator
Scientech 2803
TDM PCM outputPCM output w.r.t clock
Features?Compression and Decompression of data on same board
?On-board DDS Signal Generator
?Can be issued just like a book for hands-on learning
?2 Year Warranty
?Standard table verification of A-Law and -Law Compression and Decompression
ì
Understanding Noise Generator and its applications
Features?Detailed study & analysis of Signal with & without Noise.
?Complete study of mathematical equation y(t) = x(t) + n(t).
?Selectable Signal frequencies.
?On-board DDS Signal Generator for standard and arbitrary signals
?Can be issued just like a book for hands-on learning
?2 Year Warranty
AWGN NoiseNoisy output
Digital Companding A-Law and ì-Law
Scientech TechBook 2805 provides an extensive hands on learning on Digital Companding A-Law and ì-Law.
Scientech TechBook 2806 provides an extensive hands on learning on Noise Generator and its applications.
Scientech 2806
Scientech 2805
Compressed Signal
Input and Recovered Signal
Compressed and Recovered Signal
QPSK, OQPSK, DQPSK Modulator & Demodulator
Features
?Personalized Learning platform
?On-board four variable line speed rates and single bit data pattern.
?On board DDS technology based Carrier Generator
?SMD LED indicators
?Can be issued just like a book for hands-on learning
?2 Year Warranty
?QPSK, OQPSK, DQPSK Modulator & Demodulator on same board
FeaturesASK, FSK, BPSK, DBPSK Modulator & Demodulator on same board
?Personalized Learning platform
?On-board Data Generator with various data patterns
?Selectable data frequencies and data patterns
?DDS technology based Carrier Generator
?SMD LED indicators
?Can be issued just like a book for hands-on learning
?2 Year Warranty
?
Scientech TechBook 2808 provides an extensive hands on learning on QPSK, OQPSK, DQPSK Modulator & Demodulator.
Scientech TechBook 2807 provides an extensive hands on ASK, FSK, BPSK, DBPSK Modulator & Demodulator.
Scientech 2807
Scientech 2808
ASK, FSK, BPSK, DBPSK Modulator & Demodulator
FSKASK
DQPSK (I-Channel)QPSK
OQPSK
Understanding Noise Generator and its applications
?Study of different types of Noise and their frequency spectrum
White Noise
Additive White Gaussian Noise
Pseudo Random Noise
?Practical implementation of mathematical equation :
y(t) = x(t) + n(t)
?Study and analysis of Signal to Noise ratio-
By varying Noise amplitude
By varying Signal amplitude
?Study and analysis of eye pattern with and without Noise.
Scientech 2806
Digital Companding A-Law and ì-Law
A-Law and µ-Law Companding ?Study and analysis of A-law Compression.
?Study and analysis of ì-law Compression.
?Study and analysis of A-law Decompression.
?Study and analysis of ì-law Decompression.
Scientech 2805
Pulse Amplitude Modulation & De-modulation?
?Study and analysis of Nyquist Sampling Rate.
?Study and analysis of Natural Sampling with different types of message signals at different frequencies.
?Study and analysis of Flat top Sampling with different types of message signals at different frequencies.
?Study and analysis of Sample & Hold output with different types of message signals at different frequencies.
?
?
?
?
Study and analysis of Pulse Amplitude Modulation.
Study and analysis of under sampling by varying the message frequency and sampling rate.
Study and analysis of Second order Low Pass Butterworth filter.
Study and analysis of Pulse Amplitude Demodulation of Sample & Hold output with Second Order Low Pass Butterworth filter.
Analyze all these Natural sampling, Flat top sampling and Sample & Hold output simultaneously and observe the difference.
PAM, PPM, PWM and Line Coding Techniques
Scientech 2801
Scope of Learning
4-Channel TDM-PCM Transmitter & Receiver
Time Division Multiplexing & Demultiplexing with Pulse Code Modulation ?Study and analysis of 2 channel & 4 channel Time Division
Multiplexing
?Study and analysis of Sample & Hold output at different channel by varying the Sampling as well as Signal frequency.
?Study and analysis of Parallel to Serial conversion by varying the line speed clock at the different channel.
?Study and analysis of single bit PCM output at different line speed clock at the different channels.
?Study and analysis of single bit multiplexed PCM output at Modulator side.
?Study and analysis of single bit demultiplexed PCM output at Demodulator side.
?Study and analysis of Pulse Code Demodulation at the different channel.
?Study and analysis of Serial to Parallel conversion at the Demodulator.
?Analyze the final demodulated output with Second order Low Pass Butterworth filter .
Scientech 2804
?
?Study and analysis of Sample & Hold output by varying the Sampling as well as Signal frequency.
?Study and analysis of Parallel to Serial conversion by varying the Line speed clock.
?Study and analysis of single bit PCM output at different Line speed clock.
?Study and analysis of Pulse Code Demodulation.
?Study and analysis of Serial to Parallel conversion.
?Analyze the final PCM demodulated output with Second Order Low Pass Butterworth filter.
Study and analysis of Pulse Code Modulation.
PCM, DPCM, CVSD Modulator & Demodulator
Scientech 2802
Delta, Adaptive Delta, Sigma DeltaModulator & Demodulator
Delta Modulator & Demodulator??Study and analysis of Sample & Hold output by varying the
Sampling as well as Signal frequency.?Study and analysis of Integrator output at the Modulator by
varying the Sampling frequency.?Study and analyze the improved Integrator output by varying the
gain control frequency.?Study and analysis of the Slope Overload distortion problem.?Study and analysis of the Granular Noise problem.?Study and analysis of single bit Delta modulated PCM output.?Study and analysis of Integrator output at the Demodulator.?Analyze the final Delta demodulated output with Second order
Low Pass Butterworth filter .
Study and analysis of Delta Modulation and Demodulation.
Scientech 2803
ASK, FSK, BPSK, DBPSK Modulator & Demodulator
Amplitude Shift Keying Modulation & Demodulation
Objectives:
?
?Study and analysis of Amplitude Shift Keying Demodulation.
?Study and analysis of Integrator and Comparator block.
Frequency Shift Keying Modulation & Demodulation
Objectives:
?Study and analysis of Frequency Shift Keying Modulation
?Study and analysis of Frequency Shift Keying Demodulation.
?Study and analysis of Integrator and Comparator block.
Binary Phase Shift Keying Modulation & Demodulation
Objectives:
?Study and analysis of Binary Phase Shift Keying Modulation .
?Study and analysis of Binary Phase Shift Keying Demodulation.
?Study and analysis of Integrator and Comparator block.
Differential Binary Phase Shift Keying Modulation & Demodulation
Objectives:
?Study and analysis of Differential encoder and decoder.
?Study and analysis of Differential Binary Phase Shift Keying
Modulation .
?Study and analysis of Differential Binary Phase Shift Keying
Demodulation.
Study and analysis of Amplitude Shift Keying Modulation
QPSK, OQPSK, DQPSK Modulator & Demodulator
Quadrature Phase Shift Keying Modulation and
Demodulation
Objectives
?
variable bit pattern and frequency.
?Study and analysis of 2 bit encoding as I-Channel & Q-Channel
encoding and decoding.
?Study and analysis of Integrator and Comparator at the Demodulator
end.
Offset Quadrature Phase Shift Keying Modulation and Demodulation
Objectives
?Study and analysis of OQPSK Modulation and Demodulation with
variable bit pattern and frequency.
?Study and analysis of 2 bit encoding as I- Channel & Q-Channel
encoding and decoding.
?Study and analysis of offset encoding and decoding.
?Study and analysis of Integrator and Comparator at the Demodulator
end.
Diffrential Quadrature Phase Shift Keying Modulation and
Demodulation
Objectives
?Study and analysis of DQPSK Modulation and Demodulation with
variable bit pattern and frequency.
?Study and analysis of 2 bit encoding as I-Channel & Q-Channel
encoding and decoding.
?Study and analysis of differential encoding and decoding.
?Study and analysis of Integrator and Comparator at the Demodulator
end.
Study and analysis of QPSK Modulation and Demodulation with
Scientech 2808Scientech 2807
Designed & Manufactured by-
Techniques:
Types of Signal :
External Signal
Crystal Frequency
PAM, PPM, PWM. Line Coding
PCM, DPCM, CVSD
Delta, Adaptive Delta, Sigma Delta First & Second Order Modulator
TDM- PCM 2-Channel & 4-Channel
Digital Companding A-Law, m-Law
Understanding Noise Generator and its applications
ASK, FSK, BPSK, DBPSK
QPSK, OQPSK, DQPSK
Internal Signal Generator : Direct Digital Synthesizer
Sine
Cosine
Square
Triangle
Arbitrary Signal
Variable Frequency
Internal Data Pattern Generator : 8 Bit/ 16 Bit/ 32 Bit/64 Bit
Data Pattern Frequency
Sampling/Ramp Frequencies
Line Speed
Input through DIP switch
Maximum Input Voltage : 3Vpp (Max.) +1.5V DC offset
Frequency : 500Hz to 3.5KHz
SMD LED Indicators
Selection Mode : Push switches / Toggle switches
Transmission Effect: Attenuation, Noise, Filter
Low Pass Filter
Digital Filter : Decimation filter (16:1)
Gain Selection for Modulating Signal
Gain Selection for Noise
Test Points
Learning Material
Dimensions (mm) : W 326 x D 252 x H 52
Power Supply : 110V - 260V AC, 50/60Hz
Weight : 1.5Kg (Approximately)
Operating Condition : 0-40 C, 85% RH
Included Contents : 2mm Patch cord - 2nos
Technical Specifications 2801 2802 2803 2804 2805 2806 2807
20MHz 8MHz 8MHz 8MHz 8MHz 8MHz 8MHz 8MHz
2808
29 38 46 40 37 5 39 57
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