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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?.

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slide1

welcome

TO

A CompanySellingTechnologyand not just a Product

slide2

Digital communication

A CompanySellingTechnologyand not just a Product

what is digital communication
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

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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

A CompanySellingTechnologyand not just a Product

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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 CompanySellingTechnologyand not just a Product

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

A CompanySellingTechnologyand not just a Product

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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 CompanySellingTechnologyand not just a Product

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DCL-QPSK : QPSK /DQPSK Modulation And Demodulation Trainer Kit

A CompanySellingTechnologyand not just a Product

slide9

DCL-GMSK

  • The trainer comes with an onboard data simulator, which generates the NRZ-Lpattern 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.

A CompanySellingTechnologyand not just a Product

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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.

A CompanySellingTechnologyand not just a Product

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DCL-GMSK: GFSK / GMSK Modulator / Demodulator Kit

A CompanySellingTechnologyand not just a Product

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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.

A CompanySellingTechnologyand not just a Product

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DCL-BBT : Base Band Digital Transmission System Kit

A CompanySellingTechnologyand not just a Product

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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.

A CompanySellingTechnologyand not just a Product

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DCL-QAM : QAM / DQAM MODULATION / DEMODULATION KIT

A CompanySellingTechnologyand not just a Product

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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

A CompanySellingTechnologyand not just a Product

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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

A CompanySellingTechnologyand not just a Product

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DCL-CONV : Convolution Encoder And Viterbi Decoder Kit

A CompanySellingTechnologyand not just a Product

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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.

A CompanySellingTechnologyand not just a Product

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DCL-DPCM : DPCM / ADPCM Modulation / Demodulation Kit

A CompanySellingTechnologyand not just a Product

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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