Fluke MultiFiber Pro, User Manual

Page: 28 / 68

MultiFiber Pro Optical Power Meter and Fiber Test Kits
Users Manual
18
If a power level is lower than -27.5 dBm (1.78 μ W) or if

and

show, look for these problems:

There is a bad connection, a dirty connector, or a
damaged fiber or connector. Clean and inspect all
connectors, then do the reference procedure again.

An unpinned connector is used where a pinned
connector is necessary.

The source is in 2 kHz mode. Turn off 2 kHz mode,
then do the reference procedure again. See page 11.

The power measurement on a channel is different
from the measurement on an adjacent channel by
3 dB or more. This usually shows that a connection is
bad, a connector is dirty, or fiber or connector on the
patch cord is bad. Clean and inspect all connectors,
then do the reference procedure again.
6 To save the reference measurements, press

SAVE .
The meter saves the measurements and the display
briefly shows

, OK and REF . Then the meter goes
into loss measurement mode.
If the display shows

and

, look for the problems
given in step 5.
 Caution
If you disconnect test cord 1 from the source
after you set the reference, you must set the
reference again to make sure the loss
measurements are reliable.