Overview
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The Lab-Volt Communications Technologies Training System, Model 8087, is a state-of-the-art communications training system.
The system offers training in a wide range of communication technologies that starts from the basic pulse modulation techniques (PAM, PWM, PPM, PCM, DPCM, and delta modulation), covers the various digital modulation schemes used in data transmission (ASK, FSK, BPSK, QPSK, and QAM), and extends to modern, spectrally- efficient, digital communication techniques such as the asymmetric digital subscriber line (ADSL) and spread spectrum technologies (direct-sequence spread spectrum and frequency-hopping spread spectrum).
Topic Coverage
- Pulse Modulation and Sampling (PAM / PWM / PPM)
- Pulses
- Pulse Amplitude Modulation (PAM)
- Pulse-Time Modulation (PWM / PPM)
- Troubleshooting PAM / PWM / PPM Systems
- Digital Modulation (PCM / DPCM / Delta)
- Analog-to-Digital and Digital-to-Analog Conversion
- Distortion and Quantization Noise
- Pulse Code Modulation (PCM)
- Differential Pulse Code Modulation (DPCM)
- Delta Modulation (DM)
- Troubleshooting PCM / DPCM / DM Communications Systems
- Basic Modems and Data Transmission (ASK / FSK / BPSK)
- Baseband Data Transmission
- Amplitude-Shift Keying (ASK)
- Frequency-Shift Keying (FSK)
- Binary Phase-Shift Keying (BPSK)
- Troubleshooting Digital Communications Systems
- Quadrature Phase Shift Keying (QPSK / DQPSK)
- QPSK Modulation
- QPSK Demodulation
- Differential QPSK (DQPSK)
- Data Scrambling and Descrambling
- Troubleshooting a QPSK modem
- Quadrature Amplitude Modulation (QAM / DQAM)
- QAM Modulation
- QAM Demodulation
- V.22 bis Encoding and Decoding
- Data Scrambling and Descrambling
- Troubleshooting a QAM modem
- Asymmetric Digital Subscriber Line (ADSL)
- ADSL Basics
- ADSL Signal Spectral Analysis
- ADSL Signal Generation
- ADSL Signal Demodulation
- Framing, Synchronization, and Error Detection
- Forward Error Correction Using Reed-Solomon Codes
- Data Interleaving
- Convolutional Coding in ATU Transmitters
- Trellis-Coded Modulation in ATU Transmitters
- Viterbi Decoding in ATU Receivers
- Spread Spectrum (DSSS/FHSS/CDMA)
- Direct-Sequence Spread Spectrum
- Frequency-Hopping Spread Spectrum (FHSS)
Equipment Features
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- Provides hands-on, system-level training in communications technologies.
- Reflects the standards commonly/ used in modern communications systems.
- Flexible, future-proofed, open system using a high performance DSP-based Reconfigurable Training Module (RTM) with slots for up to three plug-in interface modules.
- Two plug-in interface modules are included: the Data Acquisition Interface and the Analog/Digital Output Interface.
- The Windows®-based Lab-Volt Communications Technologies (LVCT) software provides the user interface and configures the RTM to implement the communications technology selected by the user.
- A variety of communications technology applications (provided on CD-ROMs) allow studying many different communications technologies. Additional applications can be added at any time.
- Applications include on-screen block diagrams of circuits with numerous Test Points and/or Test Busses for connecting virtual instruments.
- The LVCT software includes a number of virtual instruments: an Oscilloscope, a Logic Analyzer, a Spectrum Analyzer, and a True RMS Voltmeter (depending on the application). The ADSL application provides two constellation Viewers.
- Software configurable function generators and clock generators are included in the applications where required. These generators generate real electrical signals made available at physical connectors on the RTM.
- The system is complete and self-contained – no additional equipment (other than a computer) is required to perform the exercises in the manuals.
- BNC connectors and Test Points loops are provided on the RTM for connecting conventional instruments, if desired, with protection against incorrect connections.
- The ADSL application includes provision for exporting and importing tables of data in a MATLAB®-compatible format.
- Fault-insertion capability allows the teaching of troubleshooting.
- Comprehensive courseware provides theory and step-by-step laboratory procedures for each technology.