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welcome TO. A Company Selling Technology and not just a Product. Digital communication. A Company Selling Technology and not just a Product. What is Digital Communication?. Data transmission, digital transmission, or digital communications 

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  1. welcome TO A CompanySellingTechnologyand not just a Product

  2. Digital communication A CompanySellingTechnologyand not just a Product

  3. What is Digital Communication? • Data transmission, digital transmission, or digital communications  • is the physical transfer of data over a point-to-point or point-to-multipoint communication channel. Examples of such channels are copper wires, optical fibers,wireless communication channels,  • storage media and computer buses. The data are represented as an electromagnetic signal, such as an electrical voltage, radio-wave, microwave, or infrared signal. A CompanySellingTechnologyand not just a Product

  4. Products offered by Akademika • DCL-01 : Analog Signal Sampling And Reconstruction Kit • DCL-02 : PAM Time Division Multiplexing / Demultiplexing Kit • DCL-03 : Pulse Code Modulation Kit • DCL-04 : Pulse Code Demodulation Kit • DCL-05 : Data Conditioning And Reconditioning Kit • DCL-06 : ASK / PSK / FSK Modulation And Demodulation Kit • DCL-07 : Delta / Sigma Delta And Adaptive Delta Modulation Demodulation Kit • DCL-08 : Pulse Amplitude / Pulse Width / Pulse Position • Modulation / Demodulation Kit A CompanySellingTechnologyand not just a Product

  5. DCL-01 • “DCL-01: Analog Signal Sampling And Reconstruction Kit” is an introductory trainer kit to understand the principles of Analog Signal Sampling and Reconstruction. • This unit provides the user sine wave of two different frequencies (1 KHz and 2 KHz), whose amplitude can be • varied from 0V to 5V by using the pots P1 and P2 respectively. • All onboard signals are Phase-Locked, to enable the learner to observe a stationary signal on an oscilloscope. A CompanySellingTechnologyand not just a Product

  6. DCL-01 : Analog Signal Sampling and Reconstruction Kit A CompanySellingTechnologyand not just a Product

  7. DCL-02 • “DCL-02: TDM Pulse Amplitude Modulation / Demodulation Kit” provides facilities for experimentation in the area of Time Division Multiplexing and Pulse Amplitude Modulation. • An onboard Function Generator provides four synchronized amplitude variable sine waves: 250Hz, 500Hz, 1 KHz, 2 KHz, and an amplitude variable DC level for generation of synchronization pulses. The 32 KHz-sampling clock and 8 KHz channel identification signal are also generated onboard. • On each Receiver channel, a 4th order Low Pass Butterworth Filter is provided with cut-off frequencies of 3.4 kHz, to obtain reconstructed signals from the de-multiplexed and demodulated signals. A CompanySellingTechnologyand not just a Product

  8. DCL-02 : PAM Time Division Multiplexing / Demultiplexing Kit A CompanySellingTechnologyand not just a Product

  9. DCL-03 and DCL-04 • “DCL-03” and “DCL-04” initiates the user to understand the fundamentals of Pulse Code Modulation Techniques. • The various principles of Pulse Code Modulation, such as Sampling, Multiplexing, Quantizing and Encoding, can be studied with these trainer kits. • The trainer also illustrates the use of parity bit for single bit error detection and Hamming Code for single bit error detection and correction. • Frame Synchronization using a pseudo random bit sequence (PRBS) and bit Synchronization using phase locked loops are also illustrated in these kits. A CompanySellingTechnologyand not just a Product

  10. DCL-03 : Pulse Code Modulation Kit A CompanySellingTechnologyand not just a Product

  11. DCL-04 : Pulse Code Demodulation Kit A CompanySellingTechnologyand not just a Product

  12. DCL-05 • DCL-05 initiates the user to the various Data Conditioning and Reconditioning Techniques, normally adopted in practice. • The System illustrates the use of the following data formats: • a) Non Return to Zero - Level (NRZ-L) • b) Non Return to Zero - Mark (NRZ-M) • c) Non Return to Zero - Space (NRZ-S) • d) Unipolar Return to Zero (URZ) • e) Biphase - Level (Biphase-L) • f) Biphase - Mark (Biphase-M) • g) Biphase - Space (Biphase-S) • h) Alternate Mark Inversion (AMI) • i) Unipolar To Bipolar A CompanySellingTechnologyand not just a Product

  13. The trainer comes with an onboard data simulator, which • generates the NRZ-L pattern depending on positions of 8-bit • switch and the reference clock (266 KHz), which enables the • trainers to work in a stand-alone mode. • Interconnection facilities: • Sockets and patch chords are provided for on board connections. • Test Points : • All relevant test points are brought-out for observations. • Observations are carried out on an oscilloscope. •   Power Supply • -12V, +5V, GND. A CompanySellingTechnologyand not just a Product

  14. DCL-05 : Data Conditioning And Reconditioning Kit A CompanySellingTechnologyand not just a Product

  15. DCL-06 • The trainer comes with an onboard data simulator, which generates the NRZ-L pattern depending on positions of 8-bit switch and the reference clock (256 KHz), which enables the trainers to work in a stand-alone mode. • Three carrier modulation options are available on the kit. • a) Amplitude Shift Keying (ASK) • b) Frequency Shift Keying (FSK) • c) Phase Shift Keying (PSK). A CompanySellingTechnologyand not just a Product

  16. DCL-06 : ASK / PSK / FSK Modulation and Demodulation Kit A CompanySellingTechnologyand not just a Product

  17. DCL-07 • “DCL-07: Delta / Sigma / Adaptive Delta Modulation And Demodulation Kit” is a compact single board unit in wooden casing and it provides hands on experimentation in the area of Delta Modulation/Demodulation, Adaptive Delta Modulation/Demodulation, Sigma Delta Modulation/ Demodulation, CVSD, Compressor and Expander and also Voice Modulation an/Demodulation techniques. • This unit contains onboard function generator, which provides Synchronized amplitude variable sine waves of 250Hz, 500Hz, 1 KHz and 2KHz and DC signal with variable amplitude. The unit has provision to accept external sine wave. Selectable clock frequency for modulation makes this kit ideal for experimentation. A CompanySellingTechnologyand not just a Product

  18. DCL-07 : ASK / PSK / FSK Modulation and Demodulation Kit A CompanySellingTechnologyand not just a Product

  19. DCL-08 • “DCL-08 : PAM / PWM / PPM Modulation trainer kit”provides experimentation in the area of Pulse Modulation/ Demodulation Techniques such as Pulse Amplitude Modulation (PAM), Pulse Width Modulation (PWM) and Pulse Position Modulation (PPM). • An onboard sine wave generator provides two synchronized amplitude variable sine waves of 500Hz and 1 KHz and one synchronized amplitude (0-2vpp) & Frequency (1-30Hz) variable sine wave. The unit has provision to accept external sine wave as input. An onboard clock generator circuit provides clock frequency of 8 KHz and 16 KHz for sampling circuit. A CompanySellingTechnologyand not just a Product

  20. DCL-08 Pulse Amplitude / Pulse Width / Pulse Position Modulation / Demodulation Kit A CompanySellingTechnologyand not just a Product

  21. AKADEMIKA LAB SOLUTIONS • EL-107, MIDC,T.T.C. Electronic Zone, Mahape, Navi Mumbai - 400710. • Tel. : +91 22 27670581/82/83 Fax : +91 22 27670583 • E-mail : lab@akademika.in, Website : www.akademika.in A CompanySellingTechnologyand not just a Product

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