The JDSU-2014 adapters are designed for instruments with direct coupling of
the test cable to a photodetector. Used with JDSU OLP Optical Power Meters is
the most common application for these adapters. They are available for various connector standards.
The JDSU-2014 universal push pull adapters (UPP) are available for 2.5 or 1.25
mm connectors. One 2.5 mm UPP adapter fits to all 2.5 mm fiber optic connectors as well as the 1.25 mm UPP adapter fits to all 1.25 mm connectors.
So the UPP adapters reduce the numbers of adapters needed for power meters.
All 2014 adapters are designed to be used with physical contact (PC) and angled physical contact (APC) connectors.