Trouble Shooting Guide
Solution
Problem
Solution
Problem
High loss on device
under test
Power meter set
at dBm instead of dB
Reference value on
power meter has
drifted from 0.00 dB
No light signal in
Device Under Test
“Bat” appears on
LCD of power meter
Ensure fiber is crimped and cleaved
properly. Read trouble shooting
guide in termination kit instruction
booklet. Ensure you used the
appropriate mandrel in the correct
location on the launch jumper at-
tached to the source.
Push dB/dBm button
on power meter to switch
to dB mode “dB” will
appear on LCD.
Re-zero the power meter, launch
the light source to
reset the test reference
number.
Device Under Test is damaged - re-
terminate or replace.
Replace 9-volt battery. Low battery
on light source or power meter “Bat”
indicates need for battery replace-
ment.
Unable to plug in
device under test to test unit or
splice bushing
Dirty fiber optic ends
Light source or power
meter set at incorrect
wavelength
Damaged launch cable
Incorrect launch jumper, splice
bushing, adapter cap. Test equip-
ment must match the fiber types and
connector type that is being tested.
All fiber optic ends must be free of
dirt, oils (finger oils), dust and con-
taminates. Use isopropyl alcohol,
lint-free wipes, and filtered com-
pressed air to clean dirty ends. Al-
ways keep rubber dust caps on fiber
optic connectors and test equipment
when not in use.
Check both meter settings:
V-system: 660 nm
ST, SMA, F07: 850 nm
Contact factory to replace.
888 438 9936 (US & Canada) or 860 678 0371 | www.ofsoptics.com
12
