Error, Noise, Precision, and Accuracy

In this lab, students explore the concept of error and its sources. They will measure and calculate the precision and accuracy of a simulated measurement and multiple instruments. Finally, they observe noise on a measurement signal and a method of mitigating that noise through filtering. These concepts combine to indicate that there’s a difference between a measured value and its true value. By quantifying and expressing things like precision and accuracy, we can identify the performance of our system and compare it with the tolerances that our solution requires.
by Enable Education


This is lab 10 of 17 in the course, Measurements and Instrumentation.


After completing this lab, students will be able to:
  1. Use the NI Automated Measurements Board to measure and calculate the precision and accuracy of a simulated voltage measurement using analog input and the DMM.
  2. Use the NI Automated Measurements Board to observe noise applied to a simulated measurement signal and measure the signal-to-noise ratio.
  3. Identify the effect that a filter has on the observed and measured noise, as well as the signal-to-noise ratio



  • Basic proficiency using Multisim Live and LabVIEW
  • Basic proficiency using ELVIS III Instruments
  • Basic knowledge of components and their behaviors


Engineering laboratory solution for project-based learning that combines instrumentation and embedded design with a web-driven experience, delivering a greater understanding of engineering fundamentals and system design.

Automated Measurements Board for NI ELVIS III

An application board for NI ELVIS III that provides students with a experimental platform for understanding and designing a signal chain for sensor integration.


LabVIEW is systems engineering software for applications that require test, measurement, and control with rapid access to hardware and data insights.

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