4Fiber Testing
Setting Up an Autotest
7Enter the nominal specifications of the fiber. Default values are presented. Press OK and the Fiber Autotest Settings screen will display with the new cable description entered beside the cable spool icon.
Setting the Modal Bandwidth
With multimode fiber, the signal can be transmitted in different “modes.” The modal bandwidth is a measurement of the ability of the fiber cable to pass the signal without adding additional attenuation. Modal bandwidth is a rating given to the fiber. The fiber manufacturer should be able to tell what the modal bandwidth of their fiber is. You should then select the proper Modal Bandwidth in the FrameScope 350 before running the test. To set the modal bandwidth for optical fiber certification:
1On the Fiber Autotest Settings screen, press Modal BW, then Edit. The Modal BW Setup screen displays.
2Choose the modal bandwidth and press OK. The Fiber Autotest Setup screen displays, with the chosen bandwidth next to Modal BW.
Choosing the Connector Type
Connectors of different types have different transmission characteristics. The FrameScope 350 compensates for those differences, if you tell it what connectors are used on the job.
110 | Agilent FrameScope 350 User’s Manual |
