®
--
SAVE/CONTINUE Switch-Stops the current
acquisition
and
display update
in
progress
when
pressed
in.
Pressing the SAVE/CONTINUE switch
a second time releases it
and
restarts
(CON-
TINUE) the acquisition process. If the SEC/DIV
switch setting
is
0.1
s per division or slower, the
SA
VE
state
is
entered immediately upon pressing
the button. At SEC/DIV settings of
50
ms
per
division
and
faster, if
an
acquisition
has
been
trig-
gered, the acquisition
is
allowed to complete
before the SAVE state
is
entered.
The pretrigger portion of
an
untriggered acquisi-
tion stops filling
in
SA
VE
mode.
When
leaving
SAVE, a
new
acquisition
is
started,
and
a trigger
is
not accepted until the pretrigger portion
again
refills.
CURSORS
Controls-
These controls apply to
all
displayed
STORE
mode waveforms. Delta Volts,
Delta
Time,
One
Over Delta Time,
and
Delay
Time
measurements of the
STORE
displays
are
made
using the CURSORS controls. Positioning of the
display window within a 4K acquisition record length
is
done
using the CURSORS Position control.
See
the "Crt Readout" description for the cursor readout
display.
POSITION CURS/SELECT WAVEFORM
Switch-Determines the function of the CUR-
SORS Position control.
When
pressed
in
(POSI-
TION
CURSORS
mode),
the CURSORS Position
control functions
as
a cursor horizontal position-
ing
control.
When
the push button
is
in
the out
position (SELECT WAVEFORM
mode),
the CUR-
SORS Position control or the C1/C2 switch
may
be
used
to position the cursor to the desired
waveform(s).
CURSORS
Position
Control-Provides for either
horizontal positioning of the active cursor (or
active cursors
when
there
are
two waveforms
displayed
in
a display
set)
or for switching the
cursors between waveform display sets.
When
cursors
are
positioned to a
new
waveform set,
they return to the position that they
had
when
they were last
on
that waveform set. Cursor posi-
tioning continues to function during
SA
VE
mode,
and
measurements
can
be
made
on
any
displayed waveform.
When
an
acquisition control
is changed, the cursors return to the acquisition
waveform set.
Cursors
are
placed
on
all
waveforms
in
a display
set. A display set
is
one
or both waveforms from
the following: Acquisition,
CH
1
and
CH
2;
Refer-
ence
1,
CH
1
and
CH
2;
Reference
2,
CH
1
and
Controls, Connectors,
and
lndicators-2230 Operators
@)
CH
2;
and
Reference
3,
CH
1
and
CH
2.
Cursors
move to the acquisition waveform if they were
on
a SAVE
REF
waveform that is turned off. The
acquisition parameters of the waveform set
in
which the cursors
are
located
are
displayed
in
the
crt readout. Cursors movable by the CURSORS
Position control
are
enclosed
in
a box.
When
the displayable acquisition record length is
greater than
one
screen, a one-screen window of
the record
is
displayed. A bar graph indicates the
position of the display window within the acquisi-
tion record. The position of the display window
is
adjusted to provide a display of the cursor posi-
tion. If the displayed cursor is positioned to either
edge
of the display window, further positioning
starts the waveform display scrolling
in
the oppo-
site direction
as
the display-window position
moves. Display-window positioning
can
be
contin-
ued
to the ends of the record, allowing observa-
tions
and
measurements to
be
made
over the
entire acquisition record.
SELECT
C1/C2 (Cursor-Select)
Switch-In
Posi-
tion
CURS
mode this switch selects the cursor(s)
that
can
be
positioned by the CURSORS Position
control. Cursors
are
activated alternately with
each
press of the
C1
/C2 button.
Each
selected
cursor
is
enclosed
in
a box.
In
Select Waveform
mode,
pressing the C1/C2 switch moves the cur-
sor set between displayed waveforms.
MEMORY
and
Menu
Controls-
These switches
control
MENU
operation while the
MENU
is
displayed,
and
they control the storage
and
display
of the SAVE Reference waveforms
when
the
MENU
is
not displayed.
WAVEFORM REFERENCE/MENU SELECT
Switch-Selects
either the
MENU
or SAVE
REF
MEMORY displays.
In
Waveform Reference
mode,
the MEMORY switches control the
Save
Reference Memory.
In
MENU
mode,
the
MEMORY switches control the
Menu,
allowing
selection of alternate parameters
and
modes that
override
the
default front-panel settings.
SAVE
REF
MEMORY
CONTROL-When
the
WAVEFORM
REFERENCE/MENU
SELECT
switch
is
in
the WAVEFORM
REFERENCE
position (button
in),
the
MEMORY switches
control the Save Reference Memory.
SAVE
REF/• Switch-Pressing this button
just prior to pressing
one
of the DISPLAY
ON/OFF buttons writes the displayed
acquisition waveform into the selected
Save
3-13
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