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4349B
GPIB
Interface
GPIB
Interface
is
used
for
remote
control
of
the
4349B
using
the
Hewlett-P
ackard
Interface
Bus(gpib ).
GPIB
is
an
instrument
interface
standard.
This
supports
worldwide
standards
IEEE
488.1,
IEC-625,
IEEE
488.2,
and
JIS-C1901
.
The
GPIB
interface
allows
the
instrument
to
be
controlled
by
an
external
computer
that
sends
commands
or
instructions
to
and
receives
data
from
the
instrument
via
GPIB
.
It
also
denes
handshaking,
addressing,
and
the
general
protocol
used
for
transmitting
individual
bytes
of
data
between
instruments
and
a
controller
.
With
an
GPIB
system,
many
dierent
types
of
devices
including
instruments
,
computers
,
plotters
,
and
printers
can
be
connected
in
parallel.
When
conguring
an
GPIB
system,
the
following
restrictions
must
be
adhered
to:
The
length
of
cable
between
one
device
and
another
must
be
less
than
or
equal
to
four
meters
.
The
total
length
of
cable
in
one
bus
system
must
be
less
than
or
equal
to
two
meters
times
the
number
of
devices
connected
on
the
bus
(the
GPIB
controller
counts
as
one
device)
and
the
total
length
of
cable
must
not
exceed
20
meters
.
A
maximum
of
15
devices
can
be
connected
on
one
bus
system.
There
are
no
restrictions
on
how
the
cables
are
connected
together
.
However
,
it
is
recommended
that
no
more
than
four
piggyback
connectors
be
stacked
together
on
any
one
device
.
The
resulting
structure
could
exert
enough
force
on
the
connector
mounting
to
damage
it.
Every
GPIB
device
has
a
unique
address
for
identication.
The
available
gpib
addresses
are
the
integer
values
0
to
30.
Any
device
on
an
GPIB
bus
must
have
a
unique
address
otherwise
there
will
be
bus
contention
as
devices
with
the
same
address
try
to
use
the
bus
at
the
same
time
.
Every
GPIB
device
must
be
capable
of
performing
one
or
more
of
the
following
interface
functions:
T
alker
A
talker
sends
device-dependant
data
when
addressed
to
talk.
In
a
GPIB
system,
there
can
be
only
one
active
talker
at
any
given
time
.
Listener
A
listener
receives
device-dependant
data
when
addressed
to
listen.
In
an
GPIB
system,
there
can
be
any
number
of
active
listener
at
any
given
time
.
Controller
A
controller
manages
the
operation
of
the
bus
and
addresses
talker's
and
listener's
.
In
an
GPIB
system,
there
can
be
only
one
active
controller
at
any
time
.
T
able
3-4
lists
the
4349B 's
gpib
capability
and
functions
.
These
functions
provide
the
means
for
an
instrument
to
receive
,
process
,
and
transmit
commands
,
data,
and
status
over
the
gpib
bus
.
T
able
3-4.
GPIB
Interface
Capability
Code
Function
SH1
Complete
Source
Handshake
capability
AH1
Complete
A
cceptor
Handshake
capability
T5
Basic
T
alker;
serial
poll;
unaddressed
if
MLA;
T
alk-Only
L4
Basic
Listener;
unaddressed
if
MT
A;
no
Listen
Only
SR1
Service
Request
capability
RL1
Remote/Local
capability
DC1
Device
Clear
capability
DT1
Device
Trigger
capability
C0
No
Controller
capability
E1
Drivers
are
open-collector
3-18
Function
Reference
Содержание 4349B
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Страница 29: ...C Overload No Contact Operations Messages Instrument Errors Messages 2 GPIB Errors Messages 3 Index Contents 9 ...
Страница 42: ...4349B Figure 1 1 Power Cable Supplied 1 10 Getting Started ...
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Страница 173: ...4349B Figure 8 5 Current Measurement Additional Error Measurement Time 400 msec General Information 8 11 ...
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Страница 210: ...4349B Figure B 1 Handler Interface Comparison Output Signals Diagram B 2 Handler Interface Installation ...
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Страница 216: ...4349B Figure B 4 A1 Main Board B 8 Handler Interface Installation ...
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