HP 54501A - Addressing the Instrument

Note
The
actual
OUTPUT
command
you
use when
programming
is
dependent
on
the
controller
and
the
programming language
you
are
using.
Angular
brackets
"<
>,"
in
this
manual,
enclose words
or
characters
that
symbolize
a
program
code
parameter
or
a
bus
command.
Information
that
is
displayed
in quotes
represents
the
actual
message
that
is
sent
across
the
bus.
The
message
terminator
(NL
orEOI)
is
the
only
additional
information
that
is
also sent
across
the
bus.
For
HP
9000
Series
200/300
controllers,
it is
not necessary
to
type
in
the
actual
<
terminator
>
at
the
end
of
the
program
message.
These
controllers
automatically
terminate
the
program
message
internally
when
the
return
key
is
pressed.
AddreSSiDQ
the Since
HP-IB can
address
multiple
devices
through
the
same
interface
Instrument
cazd,
the
device address
passed
with
the
program
message
must
include
not
only
the
correct
interface
select
code,
but
also
the
correct
instrument
address.
Interface
Select
Code
(Selects
Interface).
Each
interface card
has
a
unique
interface
select
code.
This
code
is
used
by
the
controller
to
direct
commands
and
communications
to the
proper
interface.
The
default
is
typically
"7'
for HP-IB
controllers.
Instrument
Address
(Selects
Instrument).
Each
instrument
on an
HP-IB
bus
must
have
a
unique
instrument
address
between
decimal
0
and
30.
The device address
passed
with
the
program
message
must
include
not
only
the
correct
instrument
address,
but
also
the
correct
interface
select
code.
DEVICE
ADDRESS
=
(Interface
Select Code
•
100)
+
(Instrument
Address)
HP
54501A
Programming
Introduction to
Programming
an
Oscilloscope
1-3