TREND NETWORKS FiberMASTER 33-931 Guide D'utilisation page 5

Basic Operation
Measuring Optical Power
Important: When the power meter is first turned on it self-cali-
brates to a "no light" condition which is necessary for accurate
measurements. THE DUST COVER MUST REMAIN ON THE
POWER METER PORT WHEN IT IS FIRST TURNED ON.
1. With the dust cap on the power meter, press
the power button. The meter will display 'null',
indicating that it is ready to measure and
is currently receiving no power. Press the
wavelength 'λ' button to change to the desired
wavelength.
2. Remove the dust cap and connect the meter
to a cable to begin taking measurements. The
default measurement mode is dBm and can
be changed to uW by holding the 'λ' button
for 2 seconds then releasing.
In addition to using a separate light source,
the power meter can measure the output
from any optical switch, media converter
or other device as long as its wavelength
is within one of the operating windows of
the 33-927 power meter.
5
nm
nm
-
dBm
dBm