HP 54501A Programming Reference Manual page 175

DATA
DATA
command/query
The
:DISPLAY:DATA
command
is
used to write waveform data to
one
of the
pixel planes in the HP
54501A. The
DATA
command
is followed
by
a
block
of binary
data that is
transferred from the controller to
a
specific plane in the
HP
54501A.
Only pixel memories
1
and
2
may be
written
to.
The
data
is
in the
IEEE
488.2 definite block form with
16576
bytes of data preceded
by
seven
block header bytes. The block header
contains the
ASCII characters "#800016576" and
is sent prior
to the data
being
sent.
The :DISPLAY:DATA
query
is used
to write waveform data from
one
of
the
pixel
planes in the
HP
54501A.
The pixel
planes available are planes
0
through
3.
The DATA
query causes
the
HP 54501A to output pixel data
from the specified
plane.
If
plane 0 is
specified, the
HP 54501A will
transfer the active display.
IfPMEMORYl
or
PMEMORY2
is
specified
that memory will be transferred.
When
PMEMORY3
is
specifed the
half-bright portion of the display (graticule, markers,
and
displayed
memories) will be transferred.
Note
The pixel planes are specified by
the
:DISPLAY:SOURCE
command
with
PMEMORYO
through PMEMORY3.
Command Syntax:
:DISPIay:DATA
<
binary block
>
Where:
<
binary block
> ::
=
block data in
IEEE
488.2 # format
Display Subsystem
11-6
HP 54501A
Programming