HP-IB
ST
A
TUS
Indicators
When
the
analyzer
is
connected
to
other
instruments
over
HP-IB
,the
HP-IB ST
ATUS
indicators
in
the
instrument
state
function
block
light
up
to display
the current
status of
the analyzer
.
R
=
remote
operation
L
=
listen
mode
T
=
talk
mode
S
=
service
request
(SRQ)
asserted
by
the
analyzer
System
Controller
Mode
The
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SYSTEM
CONTROLLER
softkey
activates
the
system
controller
mode
.
When in
this mode
,
the analyzer
can use
HP-IB
to
control
compatible
peripherals
,
without
the
use
of
an
external
computer.
It can
output
measurement
results
directly
to
a
compatible
printer
or
plotter
,
store
instrument
states
using
a
compatible
disk
drive
,
or
control
a
power
meter
for
performing
service routines
.
The
power
meter
calibration
function
requires
system
controller
or
pass
control
mode
.
T
alker/Listener Mode
The
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TALKER/LISTENER
softkey
activates
the
talker/listener
mode
,
which
is
the
mode
of
operation
most
often
used.
In
this
mode
,
a
computer
controller communicates
with the
analyzer
and
other
compatible
peripherals
over
the
bus
.
The
computer
sends
commands or
instructions
to
and
receives
data
from
the
analyzer
.
All
of
the
capabilities available
from
the
analyzer
front
panel
can
be
used
in
this
remote
operation
mode
,
except
for control
of
the
power
line
switch
and
some
internal tests
.
P
ass
Control
Mode
The
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USE PASS
CONTROL
softkey
activates
the
third
mode
of
HP-IB
operation:
the
pass
control
mode
.In
an automated
system
with
a
computer
controller
,
the
controller
can
pass
control
of
the
bus
to
the
analyzer
on
request
from
the
analyzer
.
The
analyzer
is
then
the
controller of
the
peripherals
,
and
can
direct
them
to
plot,
print,
or
store
without
going
through
the
computer
.
When
the
peripheral
operation
is
complete
,
control
is
passed
back
to
the
computer
.
Only
one
controller
can
be
active
at
a
time
.
The
computer
remains
the
system
controller
,
and
can regain
control
at any
time
.
Preset
does
not
aect
the
selected
controller mode
,
but
cycling
the
power
returns
the
analyzer
to talker/listener mode
.
Information on compatible peripherals is provided in Chapter
11, \Compatible P
eripherals."
Address Menu
This menu can be accessed by pressing the
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SET ADDRESS
softkey within the HP-IB menu.
In communications through the Hewlett-Packard Interface Bus (HP-IB), each instrument on the
bus is identied by an HP-IB address. This decimal-based address code must be dierent for
each instrument on the bus.
This menu lets you set the HP-IB address of the analyzer, and enter the addresses of peripheral
devices so that the analyzer can communicate with them.
6-104 Application and Operation Concepts
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