Fluke DTX-1800 Technical Reference Handbook page 225

Setting
SETUP > Fiber Loss >
Index of Ref. Source (n)
> User Defined or
Default
SPECIAL FUNCTIONS >
Set Reference
Patch Lengths
(softkey on the View
Connections screen)
SETUP > Instrument
Settings
Settings for saving tests
Table 8-2. Fiber Test Settings (cont.)
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 the reported length.
Setting a reference sets the baseline power level for loss measurements. See "About Setting
the Reference" on page 8-10.
After you set the reference, you can enter the lengths of the test reference cords used. The
lengths you enter do not affect measurements. They are included with saved results to meet
TIA reporting requirements.
Cable ID Source, Current Folder, Result Storage Location (DTX-1800, DTX-1200), Operator, Site,
Company, and Auto Save Results setting. See "Preparing to Save Tests" on page 2-1 and
"Automatically Saving Results" on page 1-32.
Certifying Fiber Optic Cabling
Loss/Length Test Settings
Description
8
8-17