How To Measure Loss; Measure The Loss Of Your Test Reference Cords; Set The Limit For Loss Measurements - Fluke MultiFiber Pro User Manual

MultiFiber Pro Optical Power Meter and Fiber Test Kits
Users Manual
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AUTO shows when the source transmits a wavelength
identifier and the meter changes its wavelength setting
to agree with the source. When only
press on the meter to select the correct
wavelength. See page "Auto Wavelength Function" on
page 13.

How to Measure Loss

The loss measurement shows how much optical power is lost
in the fiber and connectors of a link.

Measure the Loss of Your Test Reference Cords

To make sure your loss measurements on fiber installations
are reliable, you must use good test reference cords. To
make sure the cords are good, measure and record their
loss at regular intervals. Use the procedures given in the
next sections to set the reference and measure loss, but
connect the test reference cord where the figures show the
fiber link.
18

Set the Limit for Loss Measurements

The meter compares loss measurements to a limit to give a
shows, you must
status of OK or
for a channel exceeds the limit,
that channel flashes, and the bargraph shows an oval above
the limit line on the display.
You can set the limit from 0.05 dB to 50.0 dB. The increments
are 0.05 dB up to 10.0 dB and 0.1 dB up to 50.0 dB. The
default is 1.5 dB.
To set the limit
1
2
3
to the measurements. If a measurement
On the meter, hold down
setup menu, press to put the cursor next to LOSS
LIMIT, then press to put the meter in the loss limit
mode. (see Figure 7 on page 16).
While LOSS LIMIT shows, press
decrease or increase the limit value. To change the
value quickly, hold down the key.
To save the setting and exit setup mode, hold down
for 2.5 seconds.
flashes, the bargraph for
for 2.5 seconds to see the
or to