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Keysight 86120D and 86122C Multi-Wavelength Meters User's Guide
Laser Channel Flatness
You can use relative power measurements to measure flatness
(pre-emphasis) in a WDM system. Simply select one carrier as the
reference and measure the remaining carriers relative to the reference
level. The power differences represent the system flatness.
1
Press
2
Select the channel with the largest amplitude as the reference by
clicking in the "Ref" column of that peak's row.
3
To determine channel flatness from the reference, simply read the
relative power values in the "Delta Pwr" column.
Laser Channel Separation/Flatness
You can also measure channel separation and flatness at the same time.
Press
Laser Drift
Laser drift can be easily measured by using the drift application.
Press .
Signal-to-Noise Ratio
Signal-to-noise ratio can be easily measured by using the OSNR
application.
Press
and click
and click
and click
and click
Getting Started
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