Loss Measurements On 8- And 10-Fiber Cables; If Loss Is Negative - Fluke MultiFiber Pro User Manual

 POLARITY ?: The connections do not use a standard
method, one or more fibers are not connected, or
SCAN ALL is off on the source.
 UNIV: Shows when modules have the Corning Plug &
Play Universal Systems method of polarity
™
management. See Figure B-16 on page 57.

 
Press SAVE to save the measurements.
SAVE does not show if the source is set to 2 kHz
mode or if the wavelength setting on the meter is
not the wavelength you used to set the reference.
 
CHANNEL: Press CHANNEL to see the measurement
from the next channel.

The loss measurement in decibels (dB).


If loss is negative,

flashes and the meter shows
the measurement for the channel that has the
largest negative loss. See "If Loss is Negative" on
page 23.

The numbers for the channels flash in sequence when
the meter measures loss.
Note
Note

These sections switch between the wavelength that
the meter measures (nm shows) and the record
number for the next record you save (RECORD shows).
 
AUTO shows when the source transmits a
wavelength identifier, and the meter changes its
wavelength setting to agree with the source. See
"Auto Wavelength Function" on page 11.

Loss Measurements on 8- and 10-Fiber Cables

The meter lets you set a reference and measure loss on
MTP/MPO cables made for 40G and 100G standards:

On 40G cables, the four middle fibers are dark. On 100G
cables, one fiber on each side of the connector is dark.

When the meter sees the 40G or 100G configuration, it
does not show information for the dark fibers.

The meter saves loss measurements for only the 8 or 10
other fibers.
If Loss is Negative
A negative loss measurement occurs when the measured
power level is more than the reference power level. If the
loss is negative by more than -0.09 dB,
measurement flash on the meter.
How to Measure Loss

and the
23