Using the Optical Spectrum Analyzer
The Bandwidth/Sweep Menus
To select the internal trigger
1Press the
2Press the More BW/Sweep Functions.... softkey.
3Press the Trigger Mode.... softkey.
4Press the Internal softkey.
Internal triggering synchronizes the start of the sweep to an internally gener- ated trigger signal. Internal triggering ensures continuously triggered sweeps with the shortest delay between sweeps.
To select a gated trigger
1Press the
2Press the More BW/Sweep Functions.... softkey.
3Press the Trigger Mode.... softkey.
4Press the Gated softkey.
In some measurements, the spectrum at a particular time within the modula- tion period is more important than the average spectrum. Gated triggering can be used to synchronize the data acquisition portion of the OSA to a gating trig- ger connected to the
Gated triggering is used to select data samples containing valid information. When the gating signal is high, the data sample is accepted. When the gating signal is low, the data sample is replaced by a data point with a value of