Viavi 8100 V2 Series User Manual page 75

None
Section Length
Choose to display or not the section length in the table of results.
Index of refraction
Choice of group refraction index of the whole fiber.
User
NOTE
With the CWDM Module, the selection is as follows:
• For lasers 1271, 1291, 1311, 1331 and 1351, select the line 1310 SM.
• For lasers 1371 to 1511, select the line 1360 - 1510 SM
• For lasers 1531, 1551 and 1571, select the line 1550 SM
• For lasers 1591 and 1611, select the line 1625 SM.
Predefined
Figure 20
Wavelength (nm)
Generic G652 G657
Generic G653 G655
ATT SM
The section attenuation and Loss values are not displayed in the
table of results.
Define for each wavelength (1310 SM, 1360-1510 SM, 1550 SM,
1625 SM) a refraction index of 1.30000 to 1.69999. The selection of
an index alters the value of the section AB (actual distance between
cursors A and B).
or,
If the actual distance between the cursors A and B is known, enter its
value under Section AB to establish the index of the fiber. Selection
of this distance causes the display of the indices. The extreme
distance values are given by the index values (1.30000 à 1.70000).
or
You can also enter the Link Length, if it is known, using the Numeric
keypad.
It is possible to choose one of the predefined values given for certain
cables. The corresponding indices given in the table below are
repeated on the screen.
Predefined index values (Single Mode)
1310 SM 1360 - 1510 SM
1.46750 1.46800
1.46750 1.46800
1.46600 1.46700
User Manual
Chapter 3 Reflectometry measurements
Configuring the reflectometry test
1550 SM
1.46800
1.46800
1.46700
78000010220 Rev. 024
1625 - 1650 SM
1.46850
1.46850
1.46700
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