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3-27
Using the Optical Spectrum Analyzer
The Markers Menus
Next Pit Right
Places the marker on the next pit located at a longer wavelength than the cur-
rent marker wavelength position. This next pit must meet the pit excursion
and threshold criteria. If the specified marker is
OFF
, it will be turned
ON
,
placed at the center wavelength, and the search to the right will begin from
that point.
Active Marker....
Turns a particular marker
ON
or
OFF
. Turning a marker
OFF
will turn off any
marker function that was on for that particular marker. When the marker is
turned
ON
again, all the marker functions for that marker will be off.
To set the noise marker function
1
Press the front-panel
Markers
key.
2
Select an active marker.
3
Press the
More Marker Functions....
softkey.
4
Press the
Noise Marker
softkey.
5
Toggle the noise marker
ON
or
OFF
.
The noise marker measures the spectral power density at the position of the
active marker. The measurement is referenced to a 0.1 nm or 1 nm resolution
bandwidth. The reference bandwidth used to normalize the noise is selected
on the Marker setup panel. See “To change the default marker settings” on
page 3-30 for additional information.
Note
For addition information on setting the peak and pit excursion criteria, see “Peak Excur-
sion” and “Pit Excursion” on page 3-32.
book.book Page 27 Monday, January 31, 2000 10:34 AM