(800) 473-4237 / 508-992-6464 sales@focenter.com

If your values are not within standard deviation, possible causes include:

  • The interferometer adapter for the connector housing (not for the ferrules) does not hold the connector housing properly. This can happen when the adapter is old, because the metal parts will wear over time. Make sure the connector housing is properly inserted into the adapter.
  • Not using a connector housing adapter on the interferometer. This is a must for APCs. If it’s missing, all Angle, Apex, and Key Error values will be invalid.
  • The ferrule is rotating within the connector after polish. Because the spring is somewhat compressed during polishing, the ferrule is pushed back from its seat in the connector body. Typically these connector parts are plastic and do not offer exact tolerances. Sometimes they hold the ferrule in a slightly different rotational position than when polishing. You can try pushing down on the ferrule several times to compress the spring a bit, so it will settle within the connector. Then re-measure and see if the Apex and Angle values have improved.
  • The fixture keying is worn. This can happen if the keying is made of plastic, and the fixture is old. We recommend you replace these parts, if possible.


READ THE FULL BLOG ARTICLE HERE: Steps to Overcome Common APC Polishing Issues



Additional resources from the FOC team include:



Have questions about this FOC Tip?

Contact FOC with questions at: (800) 473-4237 / 508-992-6464 or email: FiberOpticCenter@focenter.com and we will respond ASAP.




Share this:
FOC Technical Experts

About FOC Technical Experts

When customers have technical questions, manufacturers often refer them to FOC as the technical expert of their equipment. FOC is resource of the know-how, the actual procedures and processes that go with each piece of equipment. It is the process that determines product meeting specifications on time. Decades of global, practical cable assembly production, fiber applications and specialty applications experience by our technical experts is out there, working daily with our customers, to improve their processes.