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FIBER OneShot Users Manual
APC/UPC
Angled Physical Contact/Ultra Physical Contact. If most cables
you will do tests on have UPC connectors, set this to UPC.
BACKLIGHT
The display backlight turns off if you do not press a key for the
period of time shown. You can set the time to 5 to 60 seconds in
increments of 5 seconds.
I.O.R. (index of refraction)
The index of refraction is the ratio of the speed of light in a
vacuum to the speed of light in a fiber. The meter uses the index
of refraction to calculate length. If you increase n, the calculated
length decreases. The default is 1.468. This value is satisfactory
for most fibers.
ft/m
Select feet or meters as the unit for length measurements.
dB LIMIT
Sets the minimum size of a reflection that the meter shows as a
break or the end of the fiber when the reflection is before the
end of the fiber. You can select -35 dB (larger reflection), -40 dB,
or -45 dB (smaller reflection). The default is -40 dB.
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