Emona Telecoms Trainer ETT-202 PDF Print E-mail

Multi-experiment Single Board Telecoms Trainer for the popular NI ELVIS™ platform


Designed Specifically for 1st & 2nd Year University and Community College courses

· See the board being used »
· DATEx - TIMS experiment capabilities comparison »
· Users adapt the DATEx for remote control labs »


Emona Telecoms-Trainer 202, known as DATEx, plugs into the NI ELVIS™ platform, operating in local mode and under LabVIEW™

  • An excellent "hands-on" experiment system, implementing the well established "block diagram approach" to building

  • Supported by a comprehensive Lab Manual written for younger students in introductory classes

  • Unrivalled with a wide range of modern communications topics in one compact trainer

  • Local control and also remote control via the ETT-202 SFP virtual instrument on LabVIEW™

ETT-202 SFP virtual instrument on LabVIEW

DESIGNED FOR NI ELVIS™ The Emona Telecoms-Trainer 202 extends the functionality of your NI ELVIS™ platform and LabVIEW™ software with a plug and play telecommunications board to teach the fundamentals of modern communications theory.

Waveform displays and measurements are on-screen using LabVIEW™. Control is either via the front panel knobs and switches, or through the PC via the ETT-202 Soft Front Panel (SFP) instrument.

Using the ETT-202, students learn fundamental concepts by actually building telecommunications experiments at the block diagram level. Theory comes to life as they build the modulation and coding schemes in carefully guided steps.

Students are free to learn by trying "what-if" scenarios to investigate the telecommunications theory they learn in class. With the ETT-202, your students will learn more, and remember more.

The system is completely self contained: all that is required is the ETT-202, NI ELVIS™ and LabVIEW™ running on a PC.

The ETT-202 accessories kit includes:
20 x stackable patch cords, User Manual, Digital and Analog Basic Telecommunications Experiments Manual Volume-1 and the ETT-202 SFP CD-ROM.


Given that the ETT-202 provides a wide array of fundamental electronic building blocks, controllable using LabVIEW™ , the ETT-202 can also be used as a general purpose applications board to investigate topics such as systems control and integration of LabVIEW applications with electronic hardware.



  • Basic Analog Communications AM, FM, DSB, SSB, PM, PAM, TDM, PWM, Superheterodyne, Speech in Comms, PLL, QAM, SNR Concepts and more

  • Digital Communications PCM, PCM-TDM, ASK, BPSK, FSK, GFSK, Eye Patterns, DPSK, QPSK, Spread Spectrum, Line Coding, Noise Generation, SNR Concepts and more

  • Familiarity with LabVIEW™ VI's; Controlling real telecommunications signals and experiment set-ups via the DATEx Soft Front Panel; Utilising a suite of LabVIEW™ VI's to generate, view and record real signals;
  • System Control & Design Skills; Integrate hardware and software signal processing; Create 'hardware in the loop' systems; Data acquisition of real electrical signals; Writing new LabVIEW™ applications using DATEx function block VI's
ETT-202 Soft Front Panel
ETT-202 Soft Front Panel (SFP) instrument display


The ETT-202 Laboratory Manual set (Vol.1, 2 & 3) provides a turn-key solution for the teacher and student alike.

ETT-202 Laboratory ManualIt is specially written to guide students through hands-on experiments and help them grasp the fundamental concepts of telecommunications.
Each chapter includes background information which relates the experiment content to real-world applications.
Since telecommunications text books represent the math and concepts of telecommunications theory as "block diagrams" this Lab Manual makes extensive use of block diagrams throughout.

Associated with each block diagram are detailed, step-by-step patching diagrams. Each chapter is carefully paced and constant use is made of questions to verify the student's understanding and provide feedback to the teacher.
LAB MANUAL TOPICS - VOLUME 1 (300 pages) ETT-202 Experiment Phase
  • Setting-up an Oscilloscope display
  • An Introduction to the ETT-202
  • Modelling Equations
  • Amplitude Modulation AM
  • Double Sideband DSB Mod
  • AM Demodulation
  • DSB Demodulation
  • SSB Modulation & Demod
  • FM Modulation
  • FM Demodulation
  • Sampling & Reconstruction
  • PCM Encoding
  • PCM Decoding
  • BW Limiting & Restoring Digital Signals
  • ASK Mod & Demodulation
  • FSK Mod & Demodulation
  • BPSK Mod & Demodulation
  • QPSK Mod & Demodulation
  • Introduction to Spread Spectrum - CDMA modulation
  • Introduction to Undersampling in Software Defined Radio
  • AM(method 2) and product detection of AM signals
  • Noise in AM communications
  • PCM and time division multiplexing (TDM)
  • An introduction to Armstrong's modulator
  • Phase division modulation and demodulation
  • Pulse width modulation and demodulation (PWM)
  • Message translation and inversion
  • Carrier acquisition using the phase locked loop (PLL)
  • Signal to noise ratio and eye diagrams
  • Pulse code modulation and signal to noise distortion ratio (SNDR)
  • ASK demodulation using product detection
  • FSK generation (switching method) and demodulation
  • Principles of Gaussian FSK (GFSK)
  • PN sequence spectra and noise generation
  • Line coding and bit clock regeneration


  • LabVIEW Control of DATEx Hardware Overview
  • Using Prewired Backgrounds on the DATEx MAIN SFP
  • Saving Screen Space with the DATEx ‘Toolbar’ SFP
  • Low Level DATEx VIs
  • Programming Amplitude Control Blocks
  • Programming Frequency Control Blocks
  • Programming Phase Control Blocks
  • Programming Timing Control Blocks
  • Programming Mode Control Blocks
  • Sequencing and Combining the DATEx Blocks
  • Using NI ELVIS Instruments on the DATEx
  • Building LabVIEW Controlled DATEx Experiments
  • Viewing filter responses using FFTs
  • Introducing complex I/Q modulation using LV Modulation Toolkit
  • Armstrong’s phase modulator using the LV Modulation Toolkit
  • MSK modulation using the LV Modulation Toolkit
  • FM generation using the LV Modulation Toolkit
  • Further LabVIEW Programming Tasks
  • Controlling DATEx remotely across the Internet

Emona Telecoms-Trainer 202 Experiment Capabilities:


1. Amplitude Modulation (AM)
  • modulation: 2 methods
  • envelope detection
  • product detection (coherent)
  • AM in a noisy channel
2. Double Side Band (DSB)
  • suppressed carrier
  • product detection (coherent)
  • DSB in a noisy channel
3. Single Sideband (SSB)
  • generation only (upper & lower)
4. Phase Modulation (PM)
  • Armstrong's Phase modulator
5. Phase Division Modulation (PDM)
  • phase division demodulation
6. Frequency Modulation (FM)
  • generation by VCO (wideband)
  • demodulation by PLL
  • demodulation by zero crossing method
7.Pulse Amplitude Modulation(PAM)
  • sampling theorem / Nyquist
  • aliasing
  • reconstruction
  • time division multiplexing (TDM)
8. Pulse Width Modulation (PWM)

9. Speech and Audio messages
  • message inversion
  • message translation
10. Superheterodyne principles


11. Carrier Acquisition using PLL

12. Signal to Noise Ratio (SNR) - Introduction to SNR

13. Quadrature Amplitude Modulation (QAM)
  • modulation
  • demodulation

Additional Experiment Capabilities

  • Introduction to Control Systems
  • Using LabVIEW™ to control external electronic circuits


14. Pulse Code Modulation (PCM)
  • encoding
  • decoding & reconstruction
  • sampling rate
  • aliasing, undersampling and oversampling
  • synchronization
15. Time Division Multiplexing (PCM - TDM)

16. Amplitude Shift Keying (ASK)
  • modulation
  • envelope recovery
  • synchronous recovery
17. Binary Phase Shift Keying (BPSK)
  • modulation/demodulation
18. Frequency Shift Keying (FSK)
  • modulation
  • envelope recovery
19. Introduction to GFSK

20. Pulse shaping

21. Data recovery in a noisy channel 22. Intersymbol Interference (ISI)
  • eye patterns/diagrams


23. Differential Phase Shift Keying (DPSK)
  • modulation/demodulation
24. Quadrature Phase Shift Keying (QPSK)
  • modulation/demodulation
25. Spread Spectrum (SS)
  • introduction to direct sequence spread spectrum (DSSS)
26. Line coding
  • NRZ - L
  • Alternate Mark Inversion (AMI)
  • Manchester (Bi - phase)
  • Differential encoding (NRZ - M)
27. Frequency Synthesis with PLL

28. PN sequence spectrum display

29. Noise generation

30. Introduction to Undersampling in Software Defined Radio

View EMONA DATEx used to build experiments (7:30 min)

DATEx - TIMS experiment capabilities comparison

Click for PDF of DATEx - TIMS experiment capabilities

Click for pdf of table

NI, NI ELVIS & LabVIEW are registered trademarks of the National Instruments Corporation. TIMS logo, DATEx are trademarks of Emona TIMS Pty Ltd