48 Keysight 86120D and 86122C Multi-Wavelength Meters User’s Guide
1 Getting Started
Step 4. Make Measurements
The instrument can make a wide variety of wavelength and power
measurements.
Peak Wavelength and Power
Press and click
Multiple Laser Lines
Press and click
Average Wavelength and Total Power
Press and click
Laser Channel Separation
It is often important to measure the wavelength and power separation
between multiple laser lines. This is especially true in wavelength-division
multiplexed (WDM) systems where channel spacing must be adhered to.
The Keysight multi-wavelength meter can display the wavelength and
amplitude of any laser line relative to another.
1Press and click
2 Select a channel as the reference by clicking in the “Ref” column of the
desired row.
3 To determine channel spacing from the reference, simply read the
relative wavelength values in the “Delta WL” column.
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