AFL MFIS Manuel de référence rapide - Page 8
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Prior to testing, make sure the plunger is oriented correctly for the type of fiber to
be tested.
Power On the MFI identifier by pressing the Power button
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MFI may be activated by pulling down the trigger. An audible tone generator will
"beep" when the unit is energized.
Gently insert the fiber to be tested into the fiber groove located at the top of the
•
MFI's head.
Pull down and hold the trigger to depress the fiber being tested against the
•
optical assembly.
The MFI will start looking for Fiber ID bursts when the plunger has closed and the
•
fiber is in the appropriate position.
Once the trigger is completely retracted, the MFI will discriminate transmitted
optical signals as follows:
– If the fiber under test is active, the MFI display will show fiber number if signal
is detected. Both arrows
beep every 3 seconds.
– When no signal is present, the MFI will illuminate the "No Signal" indicator
and show " - - -" (no fiber) on the display.
Additional Information for Ribbon Fibers Testing
Ribbon fiber is typically comprised of 4, 8, or 12 fibers with a 250 µm coating
attached together. The MFI will test ribbon fibers, however, the user should be
aware of some limitations.
Warning: Can not be used on live fiber network!
The MFI will not isolate a specific fiber from the group in a ribbon. If the ribbon
•
under test is carrying more than one MFT data burst signal, the MFI will not
function properly.
Ribbon identification on fibers 5,6,7,or 8 is the best since they are more
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centrally located.
Testing Fibers with MFT and MFI
will alternately flash, and an audible tone will
8
. Alternatively the