OLTS & OTDR: A Complete Testing Strategy
The 1-jumper method references out the EF-compliant launch cord from where it connectsto the light source to where it connects to the power meter, while a 2-jumper method references out the connection between the two jumpers and ultimately onlyincludes one end connection in the loss measurement, providing only a partial depiction of the total loss. The 3-jumper method references out two connectorsand therefore excludes the loss of both end connections under test. Some scenarios, such as testing links with connector types not supported by your testingequipment, will require a two- or three- jumper reference. You can read more about reference setting methods in our Demystifying Fiber Test Methods white paper.
