Network and Protocols

Network protocols

Understanding how devices communicate

As you read this page on some type of networked device – a mobile phone, a tablet, a computer, or a laptop – you expect it to work a certain way. But have you ever considered how these devices actually communicate with a network to access the information that you want? There are very specific communication protocols, or standards, that allow devices within a communication system to "talk" to each other by transmitting information. Protocols define the rules and language of this communication that enable the behavior you expect. Using the renowned FACET Training System, we offer comprehensive training in network protocols, establishing a strong foundation for further study in the communications field.

FACET network protocols

eSeries FACET: A complete learning solution for communications

eSeries FACET is a unique combination of hardware and software that provides a complete learning solution. The hardware components of the FACET? Training Systems are completely safe and designed for durability.

To study network protocols, experiments are performed on six communications training modules that combine theory and application with practical skill-training techniques. Training can be expanded with the E-Blocks FACET Add-ons which cover Bluetooth and Internet communications, as well as RFID, Mobile Telephony, USB, CAN, and ZigBee. Add-ons require the FACET Microcontroller System Development board.

Featured training modules:


Analog Communications

  • Comprehensive, hands-on instruction in the terminology, principles, and applications of analog communications
  • Hands-on circuit training
  • Measuring radio signals with an oscilloscope
  • Functions of oscillators, filters, amplifiers, LC networks, modulators, limiters, mixers, and detectors in communication circuits

Digital Communications 1

  • Comprehensive, hands-on instruction in the terminology, principles, and applications of digital circuits
  • Circuits include: sampler, sample/hold, adder, ramp generator, comparator, limiter, filter, CODEC, PLL, compressor, expander, integrator, differentiator, latched comparator, speaker amplifier, and channel simulator

Digital Communications 2

  • Builds on Digital Communications 1 for further comprehensive, hands-on instruction in the terminology, principles, and applications of digital circuits
  • Circuits include: NRZ, RZ, Manchester encoding and decoding, clock synchronizer, frequency-shift keying (FSK) generation, FSK asynchronous and synchronous detection, phase-shift keying (PSK) generation, PSK synchronous detection, amplitude-shift keying (ASK) generation, ASK asynchronous and synchronous detection, channel effects, and FSK/DPSK (differential phase-shift keying) modem

Fiber Optic Communications

  • Comprehensive, hands-on instruction in the theory and practice of fiber optic communications technology
  • Solid foundation in the theory and practice of fiber optics and communication techniques
  • Eleven circuit blocks provide hands-on experimentation with several varieties of fiber optic transmission and reception

Communications Transmission Lines

  • Theory and measurement skills for implementing and testing communications transmission lines
  • Principles and operational characteristics of transmission lines
  • Conducting transmission line measurements under transient (step testing), and sinusoidal steady-state conditions
  • Foundation in the theory and practice of time-domain reflectometry (TDR), impedance matching, and transformation
  • Transient and steady-state behavior testing using two generators


  • Theory and measurement skills required to implement and test different types of PSK (phase-shift keying) modulation and demodulation techniques used in pulse-coded modulation (PCM) schemes
  • Principles and operational characteristics of unipolar and bipolar signals in a baseband transmission
  • Measurement and comparison of BPSK, QPSK, OQPSK, and DPSK signals in the time and frequency domains using an oscilloscope and spectrum analyzer