Operation
Making a Measurement
1. Select the appropriate fiber adapter for the type of fiber to be mea-
sured (250 µm/ribbon cable, 900 µm, 2 mm, and 3 mm) and insert it
into the fiber identifier. The adapter will lock into place once guided
into the aligning slot.
Identification
1
2
3
4
5
6
1. Direction Indicator
2. Relative Core Power Display
3. Clamping Button
4. Sun Shield
5. Battery Indicator
6. Tone Detect Indicators
Clean the two large
area detectors with
lint-free swabs.
Align adapter
on slot
and slide into
position.
Normal Use and Maintenance
• The fiber must be inserted into the appropriate adapter and within
the groove or designated area for accurate measurements. If the fiber
is bent, twisted, or strained within the FI-100 housing, excessive loss
and possible fiber damage may occur.
• Use the lint free swabs to clean the detector surface for optimum
performance. Do not use isopropyl alcohol.
• Remove the batteries when the FI-100 is not in use for extended
periods of time to prevent accidental battery discharge or damage.
Note: If the measured power e10dBm the FI-100 will
d10dBm.
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2. Insert the fiber in the fiber clamp groove (250 µm/ribbon cable, 2
mm, and 3 mm) or onto the center of the rubber pad for the 900
µm adapter. Be sure that the fiber does not get pinched or stressed
within the housing. Also make sure that the fiber is not pulled, bent,
or stressed abnormally within the fiber enclosure or access box.
Excessive stress on the fiber may cause measurement errors.
3. Slide the clamping button up to the locking position.
4. If an optical signal is present in the fiber, the appropriate directional
LED will indicate the traffic’s direction along with an intermittent
audible tone. The relative core power will be also displayed. A “LO”
display indicates that there is no measurable power transmitted in
the fiber. If a modulated tone is present on the test fiber, the appro-
priate LED will illuminate and a constant tone will be emitted.
5. Push the fiber clamp up slightly to release the fiber from the
clamping mechanism.
Note: The measured power is an approximation of the actual power and
is dependent on fiber type, jacket material and rigidity of the cable.
Battery Power Indication
• LED Green – Battery power is OK.
• LED Yellow – Battery power is low but is sufficient to complete
the measurement.
• LED Red – Replace the battery.
Installing Batteries
Observe correct battery orientation when installing in the FI-100.
Failure to do so may cause permanent damage.
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An ISO 9001 Company • ©2019 Tempo Communications, Inc.
Tempo Europe Ltd.
Brecon House, William Brown Close Cwmbran, NP44 3AB, UK
Tel: +44 1633 927 050
www.TempoCom.com
Center the 900 µm fiber
on the fiber adapter pad.
Make sure that the 2 mm, 3 mm,
and 250 µm/ribbon cable fibers are
aligned in the fiber adapter groove.
