40696 provides an extensive hands on learning on PAM, PPM, PWM and Line Coding Techniques.
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
Object
- PAM Modulator & Demodulator Study and analysis of :\
- Pulse Amplitude Modulation.Nyquist sampling rate.
- Natural sampling with different types of message signals at different frequencies.
- Flat top sampling with different types of message signals at different frequencies.
- Sample & Hold output with different types of message signals at different frequencies.
- Under sampling by varying the message frequency and sampling rate.
- Second order Low Pass Butterworth filter.
- 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.
Line Coding Techniques Study and analysis of:
- Different Line Coding techniques.
- Different 8-Bit, 16-Bit and 32-Bit Pattern Generator by changing Pattern selection.
- NRZ Unipolar coding.
- NRZ Polar coding.
- RZ Bipolar coding.
- RZ Unipolar coding.
- Manchester coding.
- Analyze all types of Line coding outputs simultaneously and observe differences.
PWM Modulator & De-modulator
- Pulse Width Modulation.
- Single bit PWM output by varying the Ramp frequency and signal type.
- Pulse Width Demodulation.
- PWM demodulated output by varying the Ramp frequency.
- Sample & Hold output of demodulated PWM signal.
- Second order Low Pass Butterworth filter.
- Analyze the final PWM demodulated output with Second order Low Pass Butterworth filter.
PPM Modulator & De-modulator
- Pulse Position Modulation.
- Single bit PPM output by varying the Ramp frequency and signal type.
- Pulse Position Demodulation.
- Sample & Hold output of demodulated PPM signal.
- Second order Low Pass Butterworth filter
- Analyze the final PPM demodulated output with Second order Low Pass Butterworth filter.
Technical Specifications
Modulation & Demodulation
Techniques : PAM, PWM & PPM Line Coding Techniques
Internal Signal Generator : Direct Digital Synthesizer
Types of Signal : Sine, Square, Triangle, Arbitrary signals.
Frequency : 500Hz, 1KHz, 2KHz, 3KHz
External Signal :
Types of Signal : Sine, Square, Triangle, Arbitrary signals
Maximum Input Voltage : 3Vpp (Max.) +1.5V DC offset
Frequency : 500Hz to 3.5KHz
Sampling/Ramp Frequencies : 1.25KHz, 2.50KHz, 5KHz, 9.80KHz, 19.53KHz, 39.06KHz, 78.13KHz
SMD LED Indicators : 46 nos for DDS signal selection DDS signal frequency selection Sampling selection Technique Selection Interconnect path
Crystal Frequency : 20MHz
Selection Mode : Push switches
Random Data : 8 Bit/ 16 Bit/ 32 Bit (For line Coding)
Data Frequency : 500Hz, 1KHz, 2KHz, 3KHz
Test Points : 29 nos.
Low Pass Filter : Cut-off frequency-5KHz
Dimensions (mm) : W 326 x D 252 x H 52
Power Supply : 110V - 260V AC, 50/60Hz
Weight : 1.5Kg (Approximately)
Operating Condition : 0-40oC, 85% RH
Included Contents : 2mm Patch cord - 2nos
Simtel 11 - Digital Communication Interactive Software (optional)
Topics
- Source: Signal Source, Pulse Generator, Data Generator, Delay
- Math Operations: Adder, Subtractor, Multiplier
- Natural and Flattop Sampling
- Line Encoding and Decoding
- 2-Channel TDM-PCM Multiplexer