12
Chapter
2
Vertical
Channel
Settings
UPO3000E
provides
4
or
2
analog
input
channels
.
The
4
analog
channels
are
CH1
~
CH4
,
and
the
2
analog
channels
are
CH1
and
CH2
.
The
vertical
system
setting
method
for
all
channels
are
exactly
the
same
.
This
chapter
uses
1
(
Channel
1
)
as
an
example
to
describe
the
vertical
channel settings
.
2
.
1
Open
/
Activate
/
Close
Analog
Channel
CH1
~
CH4
contains
3
states
:
open
,
close
,
and
activated
.
Open
:
When
the
channel
is
close
,
press
any
of
1
,
2
,
3
,
4
to
open
the
corresponding
channel
.
Close
:
No
waveform
displays
on
the
corresponding
channel
.
For
any
open
and
activated
channel
,
pressing
its
channel
button
can
close
that
channel
.
Activated
:
When
multiple
channels
are
opened
at
the
same
time
,
only
one
channel
is
activated
(
Only
open
state
can
be
activated
).
Adjusting
the
POSITION
knob
and
the
SCALE
knob
in
the
vertical
control
area
can
change
the
settings
of
the
activated
channel
.
Any
channel
that
has
been
opened
but
not
yet
activated
could
be
activated
by
pressing
its
corresponding
channel
key
,
and
the
screen
will
show
its
corresponding
channel
menu
.
Activated
state
Open
but
not
activated
2
.
2
Channel
Coupling
Press 1 coupling to select DC, AC or grounding mode.
DC
AC
Grounding
2
.
3
Bandwidth
limitation
Press
1
bandwidth limitation to turn on the bandwidth limitation (The B
icon will appear on the vertical status bar). The bandwidth of the oscilloscope
is limited to about 20MHz, and attenuates any signal above 20MHz. It is
commonly used to reduce the high frequency noise within the signal.
B icon appears when the bandwidth limitation is on
2
.
4
VOLTS
/
DIV
Press
1
VOLTS/DIV
coarse tuning/fine tuning. Or press the SCALE
knob to quickly switch between coarse tuning/fine tuning.
In the coarse tuning, the VOLTS/DIV range is 1mV/div~20V/div by 1-2-5 step.
For example: 10mV 20mV 50mV
100mV
In
the
fine
tuning
,
it
adjusts
in
1
%
of
the
current
vertical
scale
.
For
example
:
10
.
00mV
10
.
10mV
10
.
20mV
10
.
30mV
Note
:
Div
indicates
the
grids
of
the
display
area
, /
div
represents
one
grid
.
2.5 Probe
In order to match the attenuation coefficient setting of the probe, it is necessary
to set the corresponding coefficient in the channel operation menu. If the
probe attenuation coefficient is 10:1, the probe coefficient in the channel
menu should also be set to 10X to ensure correct voltage reading.
Press 1 probe to select 0.001X, 0.01X, 0.1X, 1X, 10X, 100X, 1000X.