TDR, OTDR, Multimeter and Environmental Monitor

Virtual Practice Lab
Practice Test
TDR, OTDR, Multimeter and Environmental Monitor

TDR, OTDR, Multi meter and Environmental Monitor

This lesson covers the following tools:

  • Time domain reflectometer (TDR): device which sends signals and listens to reflections back. TDRs estimate cable length; find cable faults and splices.
  • Optical time domain reflectometer (OTDR): used for fiber
  • Multimeter: measures electricity for resistance, current, voltage and continuity.
  • Environmental monitor: monitors the environment for humidity, temperature and air particles
Learn on the go.
The app designed for the modern cyber security professional.
Get it on Google PlayGet it on the App Store
Practice Labs and Exam Vouchers

Congratulations! You're taking the first step to getting certified. Get some hands on experience with available practice labs OR save some money, support Cybrary, and purchase discounted exam vouchers. Ready to earn your next industry certification? Join cyber security's largest community and start learning today.


Our Revolution

We believe Cyber Security training should be free, for everyone, FOREVER. Everyone, everywhere, deserves the OPPORTUNITY to learn, begin and grow a career in this fascinating field. Therefore, Cybrary is a free community where people, companies and training come together to give everyone the ability to collaborate in an open source way that is revolutionizing the cyber security educational experience.

Cybrary On The Go

Get the Cybrary app for Android for online and offline viewing of our lessons.

Get it on Google Play

Support Cybrary

Donate Here to Get This Month's Donor Badge

Skip to toolbar

We recommend always using caution when following any link

Are you sure you want to continue?