<s>
In	O
electronics	O
,	O
fall	B-Algorithm
time	I-Algorithm
(	O
pulse	B-Algorithm
decay	I-Algorithm
time	I-Algorithm
)	O
is	O
the	O
time	O
taken	O
for	O
the	O
amplitude	O
of	O
a	O
pulse	B-Algorithm
to	O
decrease	O
(	O
fall	O
)	O
from	O
a	O
specified	O
value	O
(	O
usually	O
90%	O
of	O
the	O
peak	O
value	O
exclusive	O
of	O
overshoot	B-Algorithm
or	O
undershoot	B-Algorithm
)	O
to	O
another	O
specified	O
value	O
(	O
usually	O
10%	O
of	O
the	O
maximum	O
value	O
exclusive	O
of	O
overshoot	B-Algorithm
or	O
undershoot	B-Algorithm
)	O
.	O
</s>
<s>
Limits	O
on	O
undershoot	B-Algorithm
and	O
oscillation	O
(	O
also	O
known	O
as	O
ringing	B-Algorithm
and	O
hunting	O
)	O
are	O
sometimes	O
additionally	O
stated	O
when	O
specifying	O
fall	B-Algorithm
time	I-Algorithm
limits	O
.	O
</s>
