Basic Communication Lab

Networking Training System (VPL-LAN-BR)

DESCRIPTION

Here is another trainer kit from VPL Infotech & Consultants. This trainer kit is also helpful for students of networking to get feel of some more Networking Topologies. It helps them to understand about basic networking concepts. It helps in studying of Serial Bus Topology and Ring Topology.

Frequency Division Multiplexer/ Demultiplexer Trainer (VPL-CT-FDM)

SALIENT FEATURES

  • On board Balanced Modulator, Audio Oscillator, Audio Input, AC Amplifier Low Pass Filter, Carrier Generator.
  • Onboard Test Points & Fault Switches.
  • On board audio jacks provided for Microphone and Earphone connection.

FM Transmitter & Receiver Trainer (VPL-CT-FMTR)

SALIENT FEATURES

  • On board Audio Oscillator FM Modulator, Demodulator, Low Pass Filter, Amplitude Limiter & Filter Sections.
  • Onboard Test Points & Fault Switches.
  • On board audio jacks provided for Microphone and Earphone connection.
  • Onboard speaker provided for Audio.
  • Onboard Transmitting antenna.

TDM Pulse Code Demodulation Receiver Trainer (VPL-CT-PCDM)

SALIENT FEATURES

  • Input accepts two channel multiplexed data.
  • On – Board De multiplexed PCM receiver.
  • On – Board L.P. Filters.
  • Fast and slow modes do real time operation & examination of control signal and data on LED.
  • On – Bard Sync code Detector Error check code options:
    1. Odd or even parity single bit error detection.
    2. Hamming code – single but error detection.
    3. 4 switched faults for fault simulation.
  • PC – PC communication via RS 232.

TDM Pulse Code Modulation Transmitter Trainer (VPL-CT-PCM)

SALIENT FEATURES

  • Crystal controlled Clock & Sine Generator (Synchronized)
  • 2 TDM Analog channels
  • Error Check code option (Odd – Even parity, Hamming code)
  • 4 switched faults can be used for error check & fault simulation.
  • PC – PC communication via RS 232

Data Reformatting & Carrier Demodulation Receiver Trainer (VPL-CT-DRCM)

SALIENT FEATURES

  • 7 different data conditioning formats NRZ (M) RZ, Bi phase (Manchester), Bi phase (Mark), AMI, RB, Differentially encoded dibit pair to NRZ data.
  • ASK, FSK, PSK, DPSK, & QPSK carrier demodulation 
  • Output gives 2 channel TDM multiplexed data output
  • On – Board Bi phase clock recovery circuit
  • On – Board data squaring circuit and different decoder

Data Formatting & Carrier Modulation Transmitter Trainer (VPL-CT-DCCM)

SALIENT FEATURES

  • On – Board Carrier generation circuit (Sine waves Synchronized to transmitted data)
  • On – Board in phase and quadrature Phase Carrier for QPSK modulation
  • Different data conditioning formats NRZ (L), NRZ (M) RZ, BiPhase (Manchestor), Bi Phase (Mark), AMI, RB,  Differentially encoded dibit pair
  • ASK, FSK, PSK, DPSK, & QPSK Carrier modulation
  • Variable carrier and modulation offset
  • On – Board 8 bit data source
  • Variable Carrier gain
  • On – Board Unipolar to Bipolar conversion
  • On – Board Data Inverter

Delta, Adaptive Delta & Delta Sigma Modulation Demodulation Trainer (VPL-CT-ADM)

SALIENT FEATURES

  • Both Transmitter & Receiver on same board.
  • Clock generation from crystal.
  • 4 switch selectable sampling rates.
  • On – Board Generators at 4 different frequencies (Synchronized).
  • Separate Adjustable DC Level.
  • Selectable integrator gain setting (by switch or control circuit).
  • On – Board 4th order butter worth L.P. Filter.
  • Unipolar to Bipolar conversion On – Board.

TDM Pulse Amplitude Demodulation Transmitter Trainer (VPL-CT-TDM)

SALIENT FEATURES

  • Crystal controlled Clock.
  • On – Board Sine Generator (Synchronized).
  • On – Board Pulse Generator.
  • 4 Analog input Channels samples and Time Division Multiplexed.
  • Pulse Duty cycle selected.
  • 4 Channel De multiplexer.
  • Generation of clock at Receiver by PLL system.
  • 4th order Butterworth L.P. Filters.

Analog Signal Sampling & Reconstruction Trainer (VPL-CT-ASRK)

SALIENT FEATURES

  • Crystal controlled Pulse Generator.
  • Demonstrates Sampling and Reconstruction as per Nyquist criterion.
  • On – Board Analog Generator (Synchronized).
  • 5 selectable sampling frequencies.
  • Sampling Pulse Duty Cycle selectable.
  • Internal / External sampling input selectable.
  • Separate sample and sample/hold outputs.
  • On – Board 2nd order and 4th order L.P filter.

Pulse Amplitude / Pulse Width / Pulse Position Modulation & Demodulation Trainer (VPL-PM/PWM/PPM)

SALIENT FEATURES

  • PAM – PPM – PWM Modulation & Demodulation techniques, using natural & Flat – top sampling.
  • Analog sample, sample & Hold and Flat – Top output.
  • Selectable 4 different sampling pulse frequencies on board.
  • Voice communication using dynamic microphone & speaker.
  • On – Board Filter and AC Amplifier.
  • 8 switched faults.

QAM Trainer (VPL-CT-QAM)

SALIENT FEATURES

  • On – Board 24 data bit generator
  • On – Board 4 phase generator (sine0, cosine0, -sine & -cosine i.e., 0°, 90°,180° 270°)
  • On – Board Tribit Encoder - Decoder
  • On – Board data switches for I, C & Q
  • On – Board word clock generator
  • On – Board Input / Output Buffer
  • On – Board Test Points & Fault Switches