5
Basic Operation
Measuring Optical Power
Important: When the power meter is first turned on it self-calibrates
to a “no light” condition which is necessary for accurate measure-
ments. THE DUST COVER MUST REMAIN ON THE POWER ME-
TER PORT WHEN IT IS FIRST TURNED ON.
null
dBm
850
nm
With the dust cap on the power meter, press
1.
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. Select 850nm if using the IDEAL
33-926 light source.
Remove the dust cap and connect the meter
2.
to a cable to begin taking measurements. The
default measurement mode is dBm and can
be changed to mW 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.
25.30
dBm
850
nm
-
Summary of Contents for 33-928
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