Agilent Technologies 4339B - GPIB Command Structure and Syntax Rules

5
GPIB
Reference
Introduction
This
chapter provides
the information
needed to
control the
4339B
through
the
GPIB
interface
in
the GPIB
Remote mode
.
GPIB
Command Reference
Status
Reporting
Trigger
System
Data
Transfer
F
ormat
GPIB
Commands
The
4339B
's
GPIB
commands
are
compatible with
the Standard
Commands
for
Programmable
Instruments
(
A
CPI
).
SCPI
is
the
instrument command
language
for
controlling
instruments
that go
beyond
IEEE
488.2
standard
to
address
a
wide
variety
of
instrument
functions
in
standard
manner.
Commands
can
be separated
into
two
groups:
common
commands
and
subsystem
commands
.
Common
Commands
Common
commands are
generally not
measurement
related,
but
are
used
to
manage
macros
,
status
registers,
synchronization, and
data storage
.
All
common
commands
begin
with
an
asterisk
(
3
).
Common
commands
are
dened
in
the
IEEE
488.2
standard.
Subsystem
Commands
Subsystem commands
include all
measurement functions
and some
general purpose
functions.
Each
subsystem
is
a
set
of
commands
that
roughly
corresponds
to a
functional
block
inside
the
instrument.
Subsystem commands have a hierarchical structure
,calleda
command tree
, which consists of
several key words separated by a colon between each word.
Sybsystem Command Tree
The top of the subsystem command tree
is called the
root command, or simply the
root.
To reach low-level commands, you must specify a particular path (like DOS le directory
path). After power ON or after *RST , the current path is set to the root. The path settings are
changed as follows:
Message Terminator A message terminator, such as the <new line> character, sets the
current path to the root.
GPIB Reference 5-1