A
Company Selling Technology and not just a Product
A
Company Selling Technology and not just a Product
What is Digital Communication?
Data transmission, digital transmission, or digital communications
is the physical transfer of data over a point-to-point or point-tomultipoint 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, radiowave, microwave, or infrared signal.
A
Company Selling Technology and not just a Product
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
Company Selling Technology and not just a Product
DCL-01

“DCL-01: Analog Signal Sampling And Reconstruction Kit” is
an introductory trainer kit to understand the
Analog Signal Sampling and Reconstruction.
principles
of
 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
Company Selling Technology and not just a Product
DCL-01 : Analog Signal Sampling and Reconstruction Kit
A
Company Selling Technology and not just a Product
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
Company Selling Technology and not just a Product
DCL-02 : PAM Time Division Multiplexing / Demultiplexing Kit
A
Company Selling Technology and not just a Product
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
Company Selling Technology and not just a Product
DCL-03 : Pulse Code Modulation Kit
A
Company Selling Technology and not just a Product
DCL-04 : Pulse Code Demodulation Kit
A
Company Selling Technology and not just a Product
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
Company Selling Technology and not just a Product
 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
Company Selling Technology and not just a Product
DCL-05 : Data Conditioning And Reconditioning Kit
A
Company Selling Technology and not just a Product
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
Company Selling Technology and not just a Product
DCL-06 : ASK / PSK / FSK Modulation and Demodulation Kit
A
Company Selling Technology and not just a Product
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
Company Selling Technology and not just a Product
DCL-07 : ASK / PSK / FSK Modulation and Demodulation Kit
A
Company Selling Technology and not just a Product
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
Company Selling Technology and not just a Product
DCL-08
Pulse Amplitude / Pulse Width / Pulse Position Modulation / Demodulation Kit
A
Company Selling Technology and not just a Product
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