User`s guide

Test I. Dynamic Range D Single-Mode/Multimode Module Performance Tests
E6000C Mini-OTDR User’s Guide, E0302
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Figure 74 Dynamic Range Test Setup: Single-Mode
Figure 75 Dynamic Range Test Setup: Multimode
NOTE Instead of the 62.5m recirculating delay line, you can use
a 62.5
µm multimode fiber of length > 4km.
If you use such a multimode fiber, you do not require the
coupler (within the dotted box in Figure 75).
2 Turn on the OTDR, and after the selftest has passed,
recall the default settings.