UTD2000M
User
Manual
Fall
:
Time
taken
for
the
amplitude
of
a
waveform
to
fall
from
90%
to
10%.
Positive
pulse
width
:
Pulse
width
for
positive
pulse
at
50%
of
amplitude.
Negative
pulse
width
:
Pulse
width
for
negative
pulse
at
50%
of
amplitude.
Positive
duty
ratio
:
Ratio
between
positive
pulse
width
and
cycle.
Negative
duty
ratio
:
Ratio
between
negative
pulse
width
and
cycle.
‐
Overshoot
:
Ratio
between
the
difference
between
“Min”
and
“Low”
and
the
amplitude
after
waveform
falls.
‐
Preshoot
:
Ratio
between
the
difference
between
“Max”
and
“High”
and
the
amplitude
before
waveform
falls.
BurstWidth
:
The
duration
of
burst
pulse,
measure
the
whole
waveform.
FRR
:
Time
between
first
rising
edges
of
CH1
and
CH2.
FRF
:
Time
between
the
first
rising
edge
of
CH1
and
the
first
falling
edge
of
CH2.
FFR
:
Time
between
the
first
falling
edge
of
CH1
and
the
first
rising
edge
of
CH2.
FFF
:
Time
between
the
first
falling
edges
of
CH1
and
CH2.
LRR
:
Time
between
the
first
rising
edge
of
CH1
and
the
last
rising
edge
of
CH2.
LRF
:
Time
between
the
first
rising
edge
of
CH1
and
the
last
falling
edge
of
CH2.
LFR
:
Time
between
the
first
falling
edge
of
CH1
and
the
last
rising
edge
of
CH2.
LFF
:
Time
between
the
first
falling
edge
of
CH1
and
the
last
falling
edge
of
CH2.
2.
Oscilloscopes
with
bandwidth
more
than
100MHz
can
auto
measure
the
following
time
parameters,
followed
by
their
respective
definitions:
RiseTime:
Time
taken
for
the
amplitude
of
a
waveform
to
rise
from
10%
to
90%.
FallTime:
Time
taken
for
the
amplitude
of
a
waveform
to
fall
from
90%
to
10%.
Positive
pulse
width:
Pulse
width
for
positive
pulse
at
50%
of
amplitude.
Negative
pulse
width:
Pulse
width
for
negative
pulse
at
50%
of
amplitude.
Delay
(rising
or
falling
edge):
Time
delayed
between
“from
waveform”
to
“to
wave”
(during
advanced
measurement)
Positive
duty
ratio:
Ratio
between
positive
pulse
width
and
cycle.
Negative
duty
ratio:
Ratio
between
negative
pulse
width
and
cycle.
2.9
Cursor
Measurement
Press
CURSOR
key
to
display
measurement
cursor
and
cursor
menu,
and
then
use
“MULTIPURPOSE”
knob
to
change
cursor
position.
Under
CURSOR
mode,
the
cursor
can
be
moved
for
measurement.
There
are
two
modes
available,
which
are
the
voltage
and
the
time.
When
measuring
voltage,
the
cursor
type
has
first
to
be
set
as
voltage,
then
the
positions
of
the
two
cursors
should
be
adjusted
respectively
by
pressing
“SELECT”
key
and
by
turning
“MULTIPURPOSE”
knob
prior
to
the
measurement
of
Δ
V.
Likewise,
if
cursor
type
has
been
set
as
time,
we
can
use
them
to
measure
Δ
t.
Cursor
also
has
another
two
modes,
which
are
independent
and
tracking.
Under
independent
mode,
we
can
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