Fluke OF-500-10 Technical Reference Handbook page 213

Setting
Index of Refraction
Backscatter Coefficient
Modal Bandwidth
Core Diameter
Table 10-1. Fiber Property Settings
Enter the value specified for the fiber. If you are not sure of the value, and the accuracy of
length measurements is not critical, you could use the values given in the appropriate factory-
installed Generic fiber type.
BACKSCATTER is the backscatter coefficient, which indicates the amount of light the fiber
reflects back to the OTDR (using a 1 ns pulse). This value is used to calculate event reflectance
for OTDR tests.
Enter the backscatter coefficient of the fiber under test, if known. This value is specified by
many fiber manufacturers.
Limitation on the bandwidth of multimode fiber due to different arrival times of the fiber's
modes. This value is specified by the manufacturer. The valid range for MBW starts at 160
MHz-km. For most applications you may enter N/A for this value.
Enter the core diameter specified for the fiber.
Creating Custom Fiber Types and Test Limits
Creating Custom Fiber Types
Description
10
10-3