EXFO PSO-200 Optical Modulation Analyzer User Manual

Page 36

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Setting Up the Optical Modulation Analyzer

PSO-200

Using an External Local Oscillator

By default, the application automatically calibrates the external LO source
during acquisitions. You can disable this option, but you should only do so
if the application requires it (see message below), in which case the
application will try to use the last calibration values obtained with the
internal LO.

Note: Changing the frequency/wavelength or symbol rate will clear the

calibration values, thus requiring the above procedure.