1. A Company Selling Technology and not just a Product

3. What is Digital Communication? A Company Selling Technology and not just a Product  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.

4. A Company Selling Technology and not just a Product Products offered by Akademika  DCL-BPSK:BPSK / DPSK / DEPSK Modulation And Demodulation Kit  DCL-QPSK:QPSK / DQPSK Modulation And Demodulation Kit  DCL-QAM:QAM / DQAM Modulation / Demodulation Kit  DCL-DPCM:DPCM / ADPCM Modulation / Demodulation Kit  DCL-BBT:Base Band Digital Transmission System Kit  DCL-GMSK:GFSK / GMSK Modulator / Demodulator Kit  DCL-CONV:Convolution Encoder And Viterbi Decoder Kit  DCL-CRC:CRC Encoder / Decoder And MSK Modulation / Demodulation Kit

5. DCL-BPSK  “ADCL-01” initiates the user to the various Data Conditioning and Carrier Modulation Techniques, normally adopted in practice.  The Digital data in the systems can be encoded in several formats. All these waveforms can be broadly classified into the following four groups : - 1. Non-return to Zero formats, 2. Return to Zero formats, 3. Phase encoded formats, 4. Multilevel binary formats. A Company Selling Technology and not just a Product

6. DCL-BPSK : BPSK / DPSK / DEPSK Modulation / Demodulation Kit

7. DCL-QPSK  “DCL-QPSK initiates the user to QPSK / DQPSK Modulation and Demodulation technique adopted in practice.  The trainer comes with an onboard data simulator, which generates the NRZ-L pattern depending on positions of 8-bit switch and data clock of 256 KHz.  The Digital data in the systems can be encoded in several formats. All these waveforms can be broadly classified into the following four groups: 1. Non-return to Zero formats 2. Return to Zero formats 3. Phase encoded formats 4. Multilevel binary formats A Company Selling Technology and not just a Product

8. DCL-QPSK : QPSK /DQPSK Modulation And Demodulation Trainer Kit A Company Selling Technology and not just a Product

9. DCL-GMSK The trainer comes with an onboard data simulator, which generates the NRZ-L pattern depending on positions of 8-bit switch and data clock of 256 KHz which enables the trainers to work in a stand-alone mode. Two carrier modulation options are available on the kit. Gaussian Minimum Shift Keying. (GMSK). Gaussian Frequency Shift Keying. (GFSK). Following options are available for detecting the information from the carrier: “DMOD I” and “DMOD Q” signals which are the output of the LPF of GMSK Demodulator. GFSK demodulation using Zero crossing detection techniques.

10. A Company Selling Technology and not just a Product DCL-GMSK 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 DSO. Power Supply: +5V, +12V,-12V, GND.

11. A Company Selling Technology and not just a Product DCL-GMSK: GFSK / GMSK Modulator / Demodulator Kit

12. A Company Selling Technology and not just a Product DCL-BBT DCL-Base Band Digital Transmission System kit is an Advanced Digital Communication Trainer kit. A single board unit designed to learn the fundamentals of base band digital transmission system including properties of transmitter and receiver filters, Pulse Amplitude Modulation of binary data, Band Limiting, observation of Eye Pattern, Bit Error Rate measurement, study of coding operation like Scrambling and Unscrambling.

13. A Company Selling Technology and not just a Product DCL-BBT : Base Band Digital Transmission System Kit

14. A Company Selling Technology and not just a Product DCL-QAM  “DCL-QAM ” initiates the user to the various Data Conditioning and Carrier Modulation Techniques, normally adopted in practice.  The System illustrates the use of the following data formats : a) Non Return to Zero - Level (NRZ-L), b) Tribit encoded data c) Differentially encoded EVEN & ODD.  The trainers come with an onboard data simulator, which generates the NRZL pattern depending on the positions of \ switches of 8-bit DIP switch and the reference clock (256 KHz), which enable the trainers to work in a standalone mode.

15. A Company Selling Technology and not just a Product DCL-QAM : QAM / DQAM MODULATION / DEMODULATION KIT

16. A Company Selling Technology and not just a Product DCL-CONV  The trainer comes with an onboard data simulator, which generates the NRZ-L pattern depending on positions of 8-bit switch and the selectable data clock of 256 KHz or 1 Hz which enables the trainers to work in a stand-alone mode. The selectable data clock enables the user to observe the convolution encoding and viterbi decoding both at slow frequency as well as high frequency.  Convolution encoder for error correction : - Selectable rate :K = 7, rates ½, ¾. - Continuous mode operation - Support for the Intelsat IESS-308/309 standard - On-board clock selection

17. A Company Selling Technology and not just a Product DCL-CONV  Viterbi decoder for error correction : - Selectable rate : K = 7, rates ½, ¾. - Support for Intelsat IESS-308/309 standard - Supports both Hard decision and soft decision decoding - 3-bit soft-quantized demodulated bits - Single 5V supply  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 viewed on DSO.  Power Supply : +7.5V, GND

18. A Company Selling Technology and not just a Product DCL-CONV : Convolution Encoder And Viterbi Decoder Kit

19. A Company Selling Technology and not just a Product DCL-DPCM  “DCL-DPCM ” initiates the user to study about the DPCM modulation and demodulation technique with quantization error.  At the time of PCM process, the differences between input sample signals are minimal. Differential PCM (DPCM) is designed to calculate this difference and then transmit this small difference signal instead of the entire input sample signal.  Since the difference between input samples is less than an entire input sample, the number of bits required for transmission is reduced. This allows for a reduction in the throughput required to transmit voice signals.

20. A Company Selling Technology and not just a Product DCL-DPCM : DPCM / ADPCM Modulation / Demodulation Kit

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 Company Selling Technology and not just a Product