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HP 8753D - Page 373

HP 8753D
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The System
Menu
The
4
SYSTEM
5
key provides
access to
the
system
menu.
This
menu
leads
to
additional
menus
which
control various
aspects of
the
analyzer
system.
The
following
softkeys
are
located
within
the system
menu:
N
NN
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
N
SET CLOCK
allows you
to produce
time
stamps
on
plots
and
print-outs
.
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
N
LIMIT
MENU
provides
access
to
the
limits
menu.
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
N
TRANSFORM
MENU
(Option
010
Only)
provides
access
to
the
transform menu.
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
HARMONIC
MEAS
(Option
002 Only)
provides access
to the
harmonic
mode
menu.
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
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NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
INSTRUMENT
MODE
provides
access to
the
instrument
mode
menu.
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
SERVICE
MENU
provides
access
to
the
service
menu
(see
the
HP
8753D
Network
Analyzer
Service
Guide
).
The Limits
Menu
This
menu
can
be
accessed
by
pressing
N
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
LIMIT
MENU
softkey
within
the
system
menu.
Y
ou
can
have
limit
lines
drawn
on
the
display to
represent upper
and
lower
limits
or
device
specications
with
which
to
compare
the
test
device
.
Limits are
dened in
segments
,
where
each
segment
is
a
portion
of
the
stimulus
span.
Each
limit
segment has
an
upper
and
a
lower
starting
limit
value
.
Three
types
of
segments
are
available:
at
line,
sloping
line
,
and
single
point.
Limits
can
be
dened
independently
for the
two
channels
,
up
to
22
segments
for
each
channel.
These
can
be
in
any
combination of
the
three
limit
types
.
Limit
testing
compares
the
measured
data with
the dened
limits
,
and
provides
pass
or
fail
information
for
each
measured
data
point. An
out-of-limit test
condition
is
indicated
in
ve
ways:
with a
FAIL
message
on
the
screen,
with
a
beep
,
by
changing
the
color
of
the
failing
portions
of a
trace
,
with
an
asterisk
in
tabular
listings
of
data,
and
with
a
bit
in
the
HP-IB
event
status register
B
.
(The
analyzer
also
has
a
BNC
rear
panel
output
that
includes
this
status
,
but
is only
valid for
a
single
channel
measurement.)
Note
The
limit
test
output
has
three
selectable modes
.F
or more
information, refer
to
Chapter 2,
\Making Measurements
."
Limit lines and limit testing can be used simultaneously or independently
. If limit lines
are
on and limit testing is o, the limit lines are shown on the display for
visual comparison and
adjustment of the measurement trace
. However
, no pass/fail information is provided. If limit
testing
is on and limit lines are o, the specied limits are still valid and the pass/fail status is
indicated even
though the limit lines are not shown on the display
.
Limits are entered
in tabular form. Limit lines and limit testing can be either on or o while
limits are dened. As new limits are entered, the tabular columns on the display are updated,
and the limit lines (if on) are modied to the new denitions. The complete limit set can be
oset in either stimulus or amplitude value.
Limits are checked only at the actual measured data points. It is possible for a device to be out
of specication without a limit test failure indication if the point density is insucient. Be sure
to specify a high enough number of measurement points in the stimulus menu.
6-106 Application and Operation Concepts

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