Fluke DTX-1800, Техническое справочное руководство

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Certifying Fiber Optic Cabling
Loss/Length Test Settings
8-15
8
Table 8-2. Loss/Length Test Settings (cont.)
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 8-7 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.
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.
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:
•
2 Jumper: Loss results include one connection at one end of the link.
•
1 Jumper: Loss results include connections at both ends of the link. Select this method for
connections shown in this manual. See "About 1 Jumper Connections" on page 8-18.
•
3 Jumper: 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 B 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.
-continued-
Setting Description
SETUP > Fiber Loss >
Number of Adapters
SETUP > Fiber Loss >
Number of Splices
SETUP > Fiber Loss >
Connector Type
SETUP > Fiber Loss >
Test Method >