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Using the Optical Spectrum Analyzer
The Amplitude Menus
To set the reference level to the peak value
1
Press the front-panel
Amplitude
key.
2
Press the
Peak to REF LEVEL
softkey.
The system sets the value of the reference level equal to the value of the high-
est point on the active trace.
To change the default amplitude settings
1
Press the front-panel
Amplitude
key.
2
Press the
Amplitude Setup....
softkey.
3
The Amplitude Setup panel opens. Refer to “To Fill In a Setup Panel” on
page 3-65 for information on changing and selecting items in the setup panel.
The Amplitude Setup panel
Note
The settings for sensitivity, video bandwidth and sweep time interact. If the sensitivity is
set to manual, the video bandwidth and sweep time may be forced to Auto mode. If the
video bandwidth is set to manual, the sensitivity and sweep time may be forced to Auto.
If the sweep speed is set to manual and is set too fast, the
OVER
SWEEP
indicator will
come on in the display area. Since these settings interact, it is recommended that only
one
of the settings be changed, whichever setting is most important to the measurement
task being performed.
book.book Page 11 Monday, January 31, 2000 10:34 AM