Cable Certification Testing

Our system of testing commercial cabling will assure you—and us—that your telecommunications system is free of defects and ready to handle applications like voice, VoIP, 10/100/1000 Ethernet, and CATV.

Cable certification testing is an important part of our work at Schaffhouser Electric, as it allows us to show network owners that our installation work has been done in accordance with standards outlined by the Telecommunications Industry Association and the International Organization for Standardization.

This manner of testing allows us to examine and troubleshoot all low-voltage commercial wiring, including coax cables, telephone wire, security wire, and speaker wire. It also lets us graphically map out wiring systems and find the distance to faults with built-in TDR.

Our cable certification testing includes the following 13 tests, each of which will yield either a pass or fail result:

  • Wiremap: This test will locate installation and mis-wiring errors such as shorts, split pairs, crossed pairs, reverse pairs, and more.
  • Propagation Delay: This test will measure how long it takes for a signal to be sent from one end to another.
  • Delay Skew: This test looks for the difference in propagation delay among the fastest and slowest set of wire pairs.
  • Cable Length: This test will measure the copper cable to ensure that it doesn’t exceed 100 meters, the maximum recommended distance.
  • Insertion Loss (IL): This test looks to see if the signal strength diminishes from one end of a line to another.
  • Return Loss (RL): This test measures in decibels the amount of signal that’s reflected back to the transmitter.
  • Near-End Crosstalk (NEXT): This important test measures to see if signals from separate wire pairs are interfering with one another.
  • Power Sum NEXT (PSNEXT): This test calculates the Near-End Crosstalk from all other pairs to one pair.
  • Equal-Level Far-End Crosstalk (ELFEXT): This test, which is similar to the NEXT test, measures Far-End Crosstalk, at the receiver side of the connection.
  • Power Sum ELFEXT (PSELFEXT): The test calculates the Far-End Crosstalk from all other pairs to one pair.
  • Attenuation-to-Crosstalk Ratio (ACR): This test looks at how much stronger the signal is at the receiving end of a communications circuit than it is at the Near-End Crosstalk.
  • Power sum ACR (PSACR): This test uses the PSNEX value to look at how much stronger the signal is than the crosstalk at the receiving end of a communications circuit.
  • DC Loop Resistance: This test measures total resistance through one wire pair looped at one end of the connection.

Need help understanding the purpose of all these tests? Schaffhouser Electric is happy to tell you more. Click here or call 615-325-8082, today!