Boltek Lightning/2000 - Manual (Page 209)

R E A L - T I M E L I G H T N I N G D E T E C T I O N
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CID strokes for this option to be used. Many thunderstorms
that don’t produce high stroke counts (storms in the
wintertime in the U.S. and many storms in European
countries) do not produce CID strokes, or produce them in
such low numbers that those strokes are not useful for nearby
flash determination.
The results observed when this option was checked during
several rounds of severe weather in the U.S. were excellent,
with virtually no false alarms and adequate advance warning
of approaching storms.
This option is not available when using the LD-250 hardware
since different stroke types such as CIDs cannot be detected
with the LD-250.
Nearby flashes that occur during times of very low activity
rates will still be registered even if they do not contain a CID
stroke, even if this option is checked.
Optimize map drawing
This option should normally be checked. When checked, the
background map for each window maintains a cache of
images, re-using images when appropriate in order to speed
up the drawing of the map.
If you observe the map drawing improperly (i.e. missing map
features or blank areas in the map window), try unchecking
this option.
Reflection Rejection - Off
Turns reflection rejection off. All flashes that can be
displayed will be displayed.
Reflection Rejection - Low
Sets the reflection rejection to a low value. Many reflections
will not be drawn, but there is a high probability that many
reflections will leak through.