EXFO SPSB-B-500-9191 Soft Pulse Suppressor
Soft pulse suppressor bag, singlemode fiber 9/125, 500m, two SC/UPC connectors
Used in conjunction with an OTDR, the SPSB covers the OTDR's dead zone, enabling loss measurement on the first and last connections of a fiber under test.
Features
- Installation/troubleshooting/OTDR testing essential
- Increase the life of the OTDR connector by reducing the number of matings on the OTDR connector
- Singlemode and multimode fiber models
- Wide selection of connectors for quick connection to most OTDR and patch panel ports
How It Works
Link characterization is often performed using an OTDR. But even though an OTDR has the shortest dead zones, because of the way loss is measured in a link, it does not allow the characterization of the first and last connectors without using a launch test cable, also called a pulse suppressor box. Here's why:
The loss value associated with an event is the difference between the backscattering levels measured before and after the event. To account for the OTDR's dead zone, obtaining a backscattering level before the first connector requires inserting a certain length of fiber between the OTDR port and the first connector of the fiber under test. At the other end of the link, the same length of fiber is added after the last connector of the receive cable.
In order to obtain an accurate, complete picture of the systems loss, which is a critical aspect of fiber commissioning, a launch test cable should always be used at both ends of the fiber link.
