Testing In Loopback Mode - Fluke OF-500-10 Technical Reference Handbook

OF-500 OptiFiber Certifying OTDR
Technical Reference Handbook

Testing in Loopback Mode

Use Loopback mode to test spools of cable, segments of
uninstalled cable, patch cords, reference test cords, and
launch fibers.
In this mode, the tester measures loss, length, and
propagation delay at two wavelengths in one or both
directions.
6-24
Figure 6-8 shows the equipment required for loss/length
testing in Loopback mode.