UTD2000M
User
Manual
to
acquire
signal
baseline
so
as
to
confirm
whether
the
acquisition
is
normal;
After
pressing
SINGLE
key
to
set
single
trigger,
FORCE
(force
trigger)
key
can
be
pressed
to
execute
experimental
acquisition
so
as
to
check
the
control
settings.
Trigger
Control
MENU
Trigger
Type:
Edge,
Pulse
width,
video,
slope,
less
amplitude
pulse,
alternative
Edge
Triggering:
Trigger
occurs
when
the
edge
of
a
triggering
signal
reaches
a
given
level.
Pulse
Width
Triggering:
Trigger
occurs
when
the
pulse
width
of
a
triggering
signal
reaches
a
preset
triggering
condition.
Video
Triggering:
Perform
field
triggering
or
row
triggering
to
standard
video
signal.
Slope
Triggering:
Trigger
occurs
when
the
slope
of
triggering
signal
meets
the
condition.
Less
Amplitude
Pulse
Triggering:
Trigger
the
pulse
signal
that
has
passed
one
trigger
level
but
has
failed
to
pass
another
one.
Alternative
Triggering:
Trigger
signals
that
has
no
frequency
connections.
2.4.1
Edge
Triggering
Edge
triggering
refers
to
a
trigger
that
occurs
at
the
edge
of
an
input
signal,
namely
the
trigger
threshold
value.
When
“edge
triggering”
is
selected,
it
means
the
trigger
occurs
at
the
rising
edge
and
falling
edge
of
an
input
signal.
Table
2
‐
8
Edge
Triggering
Menu
Setting
Description
Type
Edge
Signal
Source
CH1
、
CH2
EXT
、
EXT/5
AC
LINE
Alter
Set
CH1
or
CH2
as
the
source
of
trigging
signal
Set
external
triggering
or
the
quotient
of
dividing
external
triggering
signal
by
5
as
the
signal
source
Set
mains
supply
as
the
source
of
trigger
Alternatively
use
CH1
or
CH2
as
the
source
of
trigger
Trigger
Coupling
DC
AC
Low
Frequency
Reject
High
Frequency
Reject
Pass
both
the
AC
and
DC
component
in
an
input
signal;
Block
the
DC
component
in
an
input
signal;
Reject
the
low
frequency
component
(less
than
80KHz)
contained
in
a
signal;
Reject
the
high
frequency
component
(higher
than
80KHz)
contained
in
a
signal;
Triggering
Mode
Auto
Normal
When
there
is
no
input
of
trigger
signal,
the
system
will
automatically
acquire
waveform
data
and
display
scanning
baseline
on
the
screen;
when
there
is
a
trigger
signal,
it
will
then
automatically
switch
into
trigger
scanning.
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