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Using the Optical Spectrum Analyzer
The Markers Menus
Bandwidth Marker Interpolation
Turns the bandwidth marker interpolation
ON
or
OFF
. When interpolation is
ON
, the bandwidth markers will be placed at the exact number of dB (NDB)
from the normal marker if within the trace range. The position of the marker
will be linearly interpolated between two trace data points. The default state is
ON
. If interpolate is
OFF
, for negative NDB values, the bandwidth markers will
be at values closest to and more negative than the NDB value. For positive
NDB values, the bandwidth markers will be at values closest to and more posi-
tive than the NDB values. This will typically result in a wider bandwidth mea-
surement.
Peak Excursion
Sets the peak excursion value for the marker search routines.
The peak excursion value is used to determine whether or not a local maxi-
mum in the trace is to be considered a peak. To qualify as a peak, both sides of
the local maximum must fall by at least the peak excursion value.
Pit Excursion
Sets the pit excursion value for the marker search routines.
The pit excursion value is used to determine whether or not a local minimum
in the trace is to be considered a pit. To qualify as a pit, both sides of the local
minimum must rise by at least the pit excursion value.
Peak excursion criteria
Pit excursion criteria
book.book Page 32 Monday, January 31, 2000 10:34 AM