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3-11
Measurements Applications
Measuring Laser Drift
laser line of interest may have since drifted to a greater
value. Note that the minimum wavelength and minimum
power may not have occurred simultaneously.
Display shows the
total
drift from the reference since the
drift measurement was started. Values represent the
minimum wavelength and power drift values subtracted
from the maximum drift values.
5
In the
List by WL
and
List by Power
displays, use the and softkeys to view
the reference values (wavelength and power values of each laser line before the
test was started).
During the measurement, you can change the display mode to
Peak WL
,
List by
WL
,
List by Power
, or
Avg WL
. When
List by WL
or
List by Power
is selected, the signal
list is sorted by reference values and not by the current, maximum, or minimum
values.
To restart the drift measurements, press
RESET
. This resets the reference val-
ues.