GW Instek GDS-1000A Series Programming Manual - Manual (Page 10)

COMMA
ND
DET
A
ILS 19
:ACQuire:LMEMory
Quer
y
Descrip
tion
R
eturns the t
ota
l wa
vef
orm da
ta i
n the
ac
quisi
ti
on
memory for long memory.
Syntax
< Long >
< Short >
:acquire:l
m
emory?
:acq:lmem?
Parameter
Channel
1/2
Channel1/
2
Note
Pl
ea
se note tha
t the number of
poi
nts
is
li
mi
ted to
4000 when
the scope
is
run
ning.
You ca
n get t
he full memory depth when the
“Single” key
is pres
sed w
ith a tr
igge
red
sign
al.
You ca
n al
so
get the full
m
emory depth
when the
“STOP
”
key
is pressed,
However, t
he
long m
emor
y may
not
fu
lly
fi
ll
up
if
a s
low time
b
ase
is
u
sed w
ith a f
ast s
ample r
ate
Al
so note that there a
re severa
l ti
me b
ase setti
ngs
th
at
don’
t res
u
lt
in
1
00
% o
f av
ai
lab
le m
em
ory, d
u
e
to a
li
mi
ted number of
av
ailable sample rates.
Example :acquire1:lmemory?
R
eturns the cha
nnel 1
long memory wa
veform
data If b
ot
h chann
els
are
ac
ti
ve up
to 1M
poi
nts
are returned
. If
only
CH
1
is
a
cti
ve then
up to 2M
points are ret
u
rned.
Data format
Six
dat
a e
lem
ents ar
e conc
atenated to
fo
rm one
data string
.
GDS-1000A
Pr
ogramming
Manual
20
#
A B
C
D
E
F
A:
Da
ta
siz
e di
gi
t
B:
Da
ta
siz
e
C: Time
int
er
val
D: Channe
l in
dicat
or
E
: R
es
er
ved
da
ta
F:
Wa
vef
or
m
d
ata
Da
ta
siz
e digi
t
Indicates the
number of digits
used
for
the dat
a
st
ring t
hat
fo
llows.
The d
at
a s
ize d
ig
it
is
4
for
40
00
points, 7 for 1M
or 2M
poin
ts.
Data s
ize
Indi
ca
tes the
da
ta siz
e. The da
ta
si
ze varies from
8008
(400
0 poi
nts)
, 200
000
8 (1
M poi
nts)
or 400
000
8
(2
M point
s).
Time
inte
rval
Indi
ca
tes the
ti
me i
nterv
al
between two a
d
ja
cent
sa
mpli
ng points i
n the
fl
oati
ng poi
nt
fo
rma
t,
compatible w
ith IEEE
754 standar
d
s.
Note:
The dat
a is sorted in the
little
-endian format.
Ch
ann
el ind
icat
or
Indicat
es
th
e channel
, 1
or
2.
Res
erv
ed
d
at
a
An un
used
d
ata b
lock,
3 bytes.
W
av
efo
rm
d
ata
The wave
for
m
data comprised
of
2M d
ata po
ints.
Each po
int
is
made
up of
2
bytes (1
6 bi
ts), hi
gh
byte (
M
SB
) first.
:ACQuire:MEMory
Quer
y
Descrip
tion
R
eturns the t
ota
l wa
vef
orm da
ta i
n the
ac
quisi
ti
on
memory.
Syntax
< Long >
< Short >
:acquire:m
emory?
:acq:mem?