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Using the Optical Spectrum Analyzer
The Wavelength Menus
To set the peak to the center of the display
1
Press the front-panel
Wavelength
key.
2
Press the
Peak to CENTER
softkey to move the peak to the center of the display.
To change the default wavelength settings
1
Press the front-panel
Wavelength
key.
2
Press the
Wavelength Setup....
softkey. The Wavelength Setup panel opens.
The Wavelength Setup panel
Setup panel
selections
Wavelength Units
Sets the wavelength units to nm, um, or Ang.
Wavelength Calibration
The wavelength calibration is not a simple offset applied to all wavelengths,
but uses the trigonometric diffraction grating equation to correct all wave-
lengths in a calculated manner. The power offset is a simple offset applied
equally to all wavelengths. It is good measurement practice to calibrate the
optical spectrum analyzer as close as possible to the wavelength where you
plan to make your measurements.
User Wavelength Cal Date
Shows the date of the last successful user-performed wavelength calibration.
Wavelength Offset
Specifies the wavelength offset. This is an offset between the measured wave-
length and the displayed wavelength.
book.book Page 63 Monday, January 31, 2000 10:34 AM