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VFL Function
VFL connector
Visual Fault
Locator
function (VFL)
Chapter 5 Power meter, VFL (Visual Fault Locator) & Talkset
2
In the
Results
page, press the Powermeter Config. >
and validate.
Carrying out the reference measurement
1
Fix the adapter corresponding to the jumper to the optical connector
of the power meter.
2
Connect the jumper between the input of the power meter and the
output of the source.
3
Configure the same wavelength on the source and the power meter.
The power measured is displayed in the results page of the power
meter.
4
Press the Pow Reference > Standard Ref soft keys to save the
result displayed as reference value.
Measurements on the fiber under test
After defining the reference value, proceed as follows to make the
measurement:
1
Fix the jumpers and connectors needed to connect the fiber to be
tested between the source output and the power meter input.
2
In the set-up menu, select dB units.
3
The power displayed in the Power Meter window corresponds to the
optical loss of the link tested. It can be displayed in the table (see
"Table of results" page
The type of optical connector used for the VFL source is UPP (Universal
Push Pull), which is compatible with all diameter 2.5 mm connectors (FC,
SC, ST, DIN, E2000, etc.)
See
Figure 12 on page 26
This function is used to emit a red light signal of frequency 1 Hz or in
continuous mode into a fiber to detect any defects in the dead zone of the
reflectometer, or to identify it.
This function is suitable for short fibers (length < 5 km) or the first few
metres of a long fiber.
User Manual
790000002/00
28).
to visualize the VFL connector.
VFL Function
Zero
soft key
31
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Table of Contents
Troubleshooting
