Using the Optical Spectrum Analyzer
Front-Panel Keys
The optical spectrum analyzer has
For maximum amplitude accuracy, perform the automatic alignment whenever the optical spectrum analyzer has been moved, subjected to large temperature changes, or following
Pressing the Auto Align button on the front panel of the OSA performs an automatic alignment of the instrument using the largest signal found in a full span sweep. This aligns the output of the monochromator with the photodetector for improved amplitude accuracy. You should use the Auto Align function whenever the OSA is bumped or physically moved to a new location.
The automatic alignment requires the connection of an external light source. This can be a broadband or narrowband source. If there is insufficient signal power, the automatic alignment will not be performed, and an error message will be reported.
The Auto Align function saves and restores the current instrument state. This allows the Auto Align function to be used in the middle of a measurement rou- tine.
If markers are turned on, the Auto Align function attempts to do the automatic alignment at the wavelength of the active marker. If the instrument is in zero span, the alignment is performed at the center wavelength.
To perform an Auto Align function from the remote interface, see the descriptions of the following remote commands: