Fluke networks fqm main fibre cable quickmap tester fluke networks fqm main p the fluke networks fqm main is a cable tester and an enterprise fibre trouble shooter that quickly and efficiently locates connections and breaks in multi mode fibre the fqm main instantly provides distances to failures such as high loss and high reflectance incidents p p it does not get any easier than one button troubleshooting just plug the fqm main into one end of a fibre channel and press the test butt