HP 54501A - Page 24

To execute
more
than
one
function
within the
same
subsystem
a
semi-colon
is
used
to
separate
the functions:
:
<
subsystem
>:
<
function
> <
separator
>
<
data
>;
<
function
> <
separator
>
<data
>
<
terminator
>
(For
example
:SYSTEM:LONGFORM
ON;HEADER
ON)
Identical function
mnemonics can
be
used for
more
than
one
subsystem.
For
example,
the
function
mnemonic
RANGE
may
be
used
to
change
the
vertical
range
or
to
change
the horizontal
range:
:CHANNEL1:RANGE
.4
-
sets
the
vertical
range
of
channel
1
to
0.4
volts
full
scale.
:TIMEBASE:RANGE
1
-
sets
the horizontal
timebase
to
1
second
full
scale.
CHANNELl
and TIMEBASE
are
subsystem
selectors
and
determine
which
range
is
being
modified.
Common
Command Header. Common
command
headers
control
IEEE
488.2
functions
within the
instrument
(such
as
clear
status,
etc.).
Their
syntax
is:
-
<
command
header
> <
terminator
>
No
space or
separator
is
allowed
between
the asterisk
and
the
command
header.
*CLS
is
an
example
of
a
common
command header.
Introduction
to Programming
an
Oscilloscope
HP
54501A
1-6
Programming