UTD2000M
User
Manual
Fig.
1
‐
5
Horizontal
Control
Area
Shown
on
the
Front
Panel
Turn
the
“POSITION”
knob
(for
movement)
to
move
the
horizontal
position
for
all
channels
and
of
REF
waveforms,
which
will
return
to
median
swiftly
once
this
knob
is
pressed
down.
MENU
for
horizontal
menu,
display
window
and
hold
off
“SCALE”
is
used
to
set
the
scale
coefficient
for
horizontal
time
base
‐
“SEC/DIV”.
Press
this
shortcut
for
quick
access
into
window
expansion
screen.
When
“window
expansion”
is
enabled,
this
can
also
be
used
to
adjust
windows
scale
and
amplification
factor.
1.
Use
horizontal
“SCALE”
knob
to
change
the
setup
of
horizontal
time
base
range
and
observe
the
change
of
status
information.
Turn
horizontal
“SCALE”
knob
to
change
time
base
range
–
“SEC/DIV”,
and
you
may
notice
from
the
status
bar
the
corresponding
change
of
the
display
of
corresponding
time
base
range,
in
detail,
the
horizontal
scan
rate
has
been
changed
from
2ns/div
～
50s/div,
stepping
in
the
form
of
“1
‐
2
‐
5”.
2.
Use
horizontal
“POSITION”
knob
to
adjust
horizontal
position
of
the
signal
in
waveform
window.
While
the
horizontal
“POSITION”
knob
is
being
turned,
waveform
can
be
observed
moving
in
horizontal
direction.
Press
down
the
horizontal
“POSITION”
knob
to
return
the
trigger
point
to
horizontal
median.
3.
Press
MENU
key
to
display
“Zoom”
menu.
Under
this
menu,
press
F3
to
open
“expanded
window”,
then
press
F1
to
shut
off
the
“expanded
window”
and
return
to
main
window.
Under
this
menu,
“MULTI
PURPOSE”
knob
can
also
be
turned
to
set
“trigger
hold
off”
Definitions
Trigger
point:
it
refers
to
the
position
of
actual
trigger
point
relative
to
midpoint
of
the
memory.
Turn
the
horizontal
“POSITION”
knob
to
move
the
trigger
point
in
horizontal
direction.
Trigger
hold
off:
It
refers
to
the
interval
between
the
generation
of
a
trigger
and
the
restart
of
trigger
circuit
next
time.
Trigger
hold
off
can
be
adjusted
by
turning
“MULTIPURPOSE”
knob,
which
is
intended
for
observing
composite
or
complicated
signal.
1.10
Preliminary
Understanding
of
Trigger
System
As
shown
in
Fig
1
‐
6,
there
are
three
keys
and
one
knob
located
within
the
trigger
menu
control
area.
The
following
exercise
will
help
you
get
familiar
with
horizontal
time
base
setups.
Fig.
1
‐
6
Trigger
System
Shown
on
the
Front
Panel
“LEVEL”
knob
for
triggering
level:
when
the
edge,
pulse
width
or
slope
triggering
mode
is
used,
we
can
turn
“LEVEL”
18
