Boltek Lightning/2000 - Manual (Page 80)

L I G H T N I N G / 2 0 0 0
80 80 80 80
percentage change required is twice the specified
trigger level.
Energy Ratio Counter
Energy rate counter, shown with and without an alert bar.
Default yellow alert trigger level: 150
Default red alert trigger level: 250
Record kept: No
This counter shows the energy ratio over the last
minute.
The energy ratio is an arbitrary measure of the energy
contained in lightning strokes. It is a good indicator of
a close storm. An energy ratio of over 150% is a good
sign of a relatively nearby storm.
Sometimes the first indicator that a thundershower is
forming nearby will be the red alert on the energy ratio
counter.
At least five strokes per minute must occur before
either the red or yellow energy ratio alert will be
indicated.
Noise Rate Counter
The noise rate counter has no alarms associated with it.
Record kept: Yes
The noise rate counter shows the number of noises
that have been received in the last minute.