Certifying Fiber Optic Cabling
Fiber Test Settings
7-15
7
Table 7-2. Fiber Test Settings (cont.)
-continued-
Setting Description
SETUP > Fiber >
Number of Adapters
SETUP > Fiber >
Number of Splices
If the selected limit uses a calculated loss limit, enter the number of adapters and splices that will be
added to the fiber path after the reference is set. Figure 7-7 shows an example of how to determine
the Number of Adapters setting.
Only limits that use maximum values for loss per km, loss per connector, and loss per splice use a
calculated limit for overall loss. For example, limits for fiber backbones use a calculated loss limit.
SETUP > Fiber >
Connector Type
Select the type of connector used in the cabling. This setting affects only the diagrams shown for
reference connections. If the cabling's connector type is not listed, use General.
SETUP > Fiber >
Test Method >
Method A, B, C
Loss results include connections added after referencing. The reference and test connections
determine which connections are included in results. The Test Method refers to the number of end
connections included:
•
Method A: Loss results include one connection at one end of the link.
•
Method B: Loss results include connections at both ends of the link. Select this method for
connections shown in this manual. See "About Method B Connections" on page 7-18.
•
Method C: Loss results exclude connections at the ends of the link. Only the fiber loss is
measured.
Different standards have different names for the three test methods. See Appendix A for details.
The Test Method setting does affect the reference and test connection diagrams shown on the
tester's display. The diagrams show connections for the method selected.
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