FiberMASTER side
20
Light Source Indicators and Functions
1. Power LED. Lights green when light source is active.
2. Power button.
3. Low Battery LED. Blinks red when battery is low. At
3.6V unit will power off after 10 minutes. At 3.3V unit will
power off after 5 seconds.
The power output of the light source will vary slightly during the first five
minutes of operation as it warms to operating temperature. To ensure best
measurement accuracy, allow the light source to operate for five minutes
before calibrating the meter or making measurements.
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 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
850
nm
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.
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 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.
