Measurements On The Fiber Under Test - Viavi 4000 V2 Manual

The actual power level is set as the new reference level for the selected
wavelength. Then, the displayed value is around 00.00 dB.
The reference levels are stored and entered in the setup fields.

Measurements on the fiber under test

Once the references have been performed on both units:
After a Side by side reference, always keep the jumper connected to the equipment (1)
the light Source and connect another graded jumper to the Power meter port, equipment
(2).
1 Connect the jumpers to the fiber under test using the appropriate method (ex.
keying mechanism for FC/PC types).
2 On equipment (1) press Laser START.
Figure 21 Measurement of the fiber under test
Equipment (1)
OTDR Module:
Source port
Measurement using a mode conditioner
To perform an Insertion Loss measurement with a Source that is compliant to IEC
61280-4-1 Ed2 Standard on encircled flux, it is recommended to use a mode conditioner
after the OTDR Source port.
The light source and the mode conditioner has to be referenced together using the side-
by-side 1-jumper reference method (see
1 Connect the Multimode source (1) to the mode conditioner
2 Connect the Powermeter port (2) to the jumper
3 Connect extremities of the mode conditioner and jumper to the fiber under test
using the appropriate method (ex. keying mechanism for FC/PC types).
Chapter 5 Power meter, VFL (Visual Fault Locator) & Talkset
Fiber Under Test
Jumper
User Manual
Performing an insertion loss measurement
"Side by side reference" on page
74000NG012 Rev. 004
Equipment (2)
Mainframe
Power meter port
36):
37