11-8
IM AQ1200-01EN
11.3 Performing a Loop-Back Loss Test
Procedure
Configuring the Optical Power Meter and Light Source
Power Meter and Light Source Screens
1.
Using the
rotary knob
and
ENTER
, select
Auto Loss Test
.
2.
Press the
Function Select
soft key and then the
Loop Back
soft key to display the following
screen.
When you start a loss test, the instrument
generates the specified wavelengths in order. The
current wavelength appears here.
Optical power adjustment (see section 11.1)
Set the wavelength.
The available settings vary depending on the models.
Measured value
Bar graph display of
the measured value
Set the reference manually
(–80 to 40 dBm).
The Reference box appears if you
press the DREF soft key or set the
unit to dB.
Lower threshold
line
Upper threshold
line
Sets the reference to the currently
displayed measured value
Holds the measured value display
Set the unit (dB, dBm, W).
These lines indicate the upper and lower threshold values
(see the detailed setup screen in section).
Detailed Setup Screen
Press
SETUP
and then the
OPM SETUP
soft key to display the following screen.
Set the offset (–9.900 to 9.900 dB).
Set the threshold values (–80 to 40 dBm).
You can set the upper and lower values.
