Certifying Fiber Optic Cabling
Autotest in Smart Remote Mode 5
5-13
Table 5-2. Fiber Test Settings (cont.)
Setting Description
SETUP > Fiber >
Index of Ref. Source (n)
> User Defined or
Default
The tester uses the index of refraction (n) defined in the currently selected fiber type (Default) or
a value you define (User Defined). The default value defined by the selected fiber type
represents the typical value for that fiber type. You may enter a different value if necessary. To
determine the actual value, change the index of refraction until the measured length matches
the known length of a fiber.
Increasing the index of refraction decreases measured length.
SPECIAL FUNCTIONS >
Set Reference
Patch Lengths
(softkey on the View
Connections screen)
Setting a reference sets the baseline power level for loss measurements. See “About Setting the
Reference” on page 5-6.
After you set the reference, you can enter the lengths of the patch cords used for reference and
test connections. The lengths you enter do not affect measurements. They are included with
saved results to meet TSB-140 reporting requirements.
SETUP > Instrument
Settings
Settings for saving tests
Cable ID Source, Current Folder, Result Storage Location (DTX-1800, DTX-1200), Operator, Site,
and Company. See “Preparing to Save Tests” in Chapter 2.
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