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Tektronix 2221 - Page 110

Tektronix 2221
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u
Options
and
Accessories
--
2221
Operators
Table
7-27
(
cont
)
Commands
Description
ACQuisition
?
POInts
Returns
an
<
NR1
>
value
that
is
the
number
of
data
points
in
the
waveform
record
.
The
form
of
the
return
is
:
ACQ
POI
:
<
NR1
>
;
ALL
ACQuisition
?
SAVE
Returns
a
string
of
either
ON
or
OFF
for
the
present
state
of
the
acquisition
system
(
ON
for
SAVE
and
OFF
for
CONTINUE
)
.
ALL
ACQuisition
?
SWPcount
Returns
an
<
NR1
>
value
for
the
number
of
sweeps
completed
in
an
acquisition
.
The
form
of
the
return
is
:
나
ACQ
SWP
:
<
NR1
>
;
ALL
ACQuisition
?
TRIGMode
Returns
a
string
of
either
PRE
or
POST
for
the
present
ACQuisition
Trigger
setting
in
the
following
form
:
ACQ
TRIGM
:
<
PRE
or
POST
>
;
ALL
STORe
?
Returns
the
present
state
of
the
STORE
/
NON
-
STORE
button
in
the
form
:
STOR
<
ON
or
OFF
>
;
U
UU
)
Table
7-28
Save
and
Recall
Reference
Commands
Commands
Description
ALL
REFFrom
(
ACQ
]
u
Selects
the
acquisition
as
the
source
for
the
waveform
data
to
be
saved
into
one
of
the
numbered
reference
memories
by
the
SAVeref
command
.
ACQ
is
the
default
argument
(
indicated
by
the
square
brackets
,
[
]
)
and
need
not
be
present
in
the
command
to
select
it
as
the
data
source
.
For
the
2220
and
2221
,
ACQ
is
the
only
valid
source
.
2230
REFFrom
REF
<
1-4
>
Selects
the
named
reference
memory
as
the
data
source
for
the
next
SAVeref
command
.
Acquisition
(
ACQ
)
waveforms
must
first
be
stored
into
one
of
the
numbered
references
(
REF1
-
REF4
)
before
they
may
be
saved
into
one
of
the
lettered
references
(
REFA
-
REFZ
)
.
บ
7-34
1

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