HP 8753D - Page 490

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ADDRESS:
P MTR/HPIB
sets the
HP-IB address
the analyzer
will use
to communicate
with
the power
meter used
in service
routines.
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ADJUST DISPLAY
presents
a menu
for adjusting
display intensity
, colors
,
and
accessing
save and
recall functions
for modied
LCD color
sets
.
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ADJUSTMENT TESTS
leads
to the
beginning of
the adjustment
tests.
These tests
generate
correction constants
that are
used by
the
analyzer
.
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ALL SEGS
SWEEP
retrieves
the full
frequency
list
sweep
.
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ALTERNATE
A
and
B
measures
only
one
input
per
frequency
sweep
,
in order
to
reduce
spurious
signals
.
Thus
,
this
mode
optimizes the
dynamic
range
for
all
four
S-parameter measurements
.
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AMPLITUDE
OFFSET
adds
or
subtracts
an
oset in
amplitude value
. This
allows
limits
already
dened
to
be used
for testing
at a
dierent
response
level.
F
or
example,
if attenuation
is added
to or
removed
from
a
test
setup,
the limits
can be
oset an
equal
amount.
Use
the entry
block controls
to
specify
the
oset.
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ANALOG
IN
Aux
Input
displays
a
dc
or
low
frequency
ac
auxiliary
voltage
on
the
vertical
axis
,
using
the
real
format.
An
external
signal
source
such
as a
detector
or
function
generator
can
be
connected
to
the
rear panel
A
UXILIARY
INPUT
connector
.
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ASSERT
SRQ
sets
the
sequence
bit
in
the
Event
Status
Register
,
which
can
be
used
to
generate
an
SRQ
(service
request)
to
the
system
controller
.
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AUTO
FEED
ON
off
turns
the
plotter
auto
feed
function
on
or
o
when
in
the
dene
plot
menu.
It
turns
the
printer
auto
feed
on or
o
when
in
the
dene
print
menu.
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AUTO
SCALE
brings
the
trace
data
in
view
on
the
display
with
one keystroke
.
Stimulus
values
are
not
aected,
only
scale
and
reference
values
.
The
analyzer
determines
the
smallest
possible
scale
factor that
will put
all displayed
data onto
80%
of
the
vertical
graticule
.
The reference
value is
chosen to
put
the
trace
in
center
screen,
then rounded
to an
integer multiple
of
the
scale
factor
.
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AUX
OUT
on OFF
allows you
to monitor
the analog
bus
nodes
(except
nodes
1,2,3,4,9,10,12) with
external equipment.
To
do
this
,
connect
the
equipment
to
the
AUX
INPUT
BNC
connector
on
the
rear
panel.
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AVERAGING
FACTOR
makes averaging factor the active function. Any value up to
999 can be used. The algorithm
used for averaging is:
A ( n )=
S ( n ) =F +(1
0 1 =F ) 2 A (
n 0 1)
where
A(n) = current average
S(n) = current measurement
F = average factor
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AVERAGING on OFF
turns the averaging function on or o for the active channel.
\Avg" is displayed in the status notations area at the left of the
display, together with the sweep count for the averaging factor,
9-4 Key Denitions