HP 8508A - Page 73

i Operation
The
query
option
returns
the
code
of
the
last
key
pressed.
-
Table
3-3.
Keycodes
A
8
REFL MEAS
FORMAT
POWER MEAS
B/A MAG
B-A PHASE
REF SELECT
REF
SYSTEM IMPD
METER SELECT
LOCK RANGE
STEP UP
STEP DOWN
MAG RANGE
HOLD VALUE
DISPLAY
SHIFT
LCL
PRESET
SYSTem:FORMat
sets
the
HP-IB
output
format
for
measurement
results.
Two
formats
are
available
(ASCii
and
FP64)
and
they
are
described
in
the
earlier
section
on
HP-IB
Response
Formats.
:
Trigger <=HP1B=> *TRG
The
trigger
command
performs
the
same
function
as
the
Group
Execute
Trigger
command
defined
by
IEEE
488.1,
that
is
it
initiates
a
new
measurement
when
the
TRIGger:SOURce
is
BUS.
Trigger Setup <=HPIB=> TRIGger
Source
sSOURce
8US|FREErun
The
trigger
setup
function
allows
the
trigger
mode
to
be
selected.
In
freerun,
the
Vector
Voltmeter
makes
measure-
ments
as
quickly
as
possible.
When
the
trigger
source
is
set
to
BUS,
the
Vector
Voltmeter
waits
to
receive
a
trigger
before
initiating
the
next
measurement.
Wait-to-continue <=HP1B=> *WAI
This
command
causes
the
Vector
Voltmeter
to
complete
all
current
actions
before
accepting
any
more
commands.
It
can
be
used
to
synchronize
the
instrument’s
operation
with
other
equipment.
E1089 3-49