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The following parameters need to be set for Drift measurements:
Sweep
Number of Sweeps
Wait Period
NOTE
Wait period specifies the time between start of one measurement and
start of the next measurement and includes the instrument
measurement time
All channels defined by the channel Grid can be monitored
simultaneously with the drift application. To show the monitored
measurement parameter use the Trace/Channel/Drift button in the
result screen.
This button has a toggle function with the following selections:
Trace
Channel
Drift
Activating the Drift display will show the following screen:
Fig. 19
Example of drift measurement, figure shows
wavelength drift over time
MTS / T-BERD 5800 • COSA-4055 • User Manual 2016.01
Chapter 1 Optical Spectrum Measurement
Set to Drift.
Defines the number of sweeps (1 to 10.000).
Defines the time between the measurements.
In Drift mode only one trace can be displayed.
Thus, Trace can not be selected.
In Channel mode the up/down cursor change
the channel to be displayed over time.
Activates the drift display showing the selected
parameter over time.
Drift measurement
35
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