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Model 414.5A
SECTION III
NEXT:
Advances
the
display
to the
next
page.
Each
time
this
key
is
pressed,
the instrument
checks the
presently
displayed
page
for
any
illegal
settings,
and if it detects
any
errors,
it
displays
the
corresponding
error
message
and
does not advance
to the next page,
Qr
automatically
changes
the
settings.
PREV :
Returns
the display to the previous
page*
Each
time
this
key
is
pressed,
the instrument
checks the
presently
displayed
page
for
any
illegal
settings.
3
MEASUREMENT
Keys :
These keys start and stop the measurement.
After
all measurement
conditions
have been
set and the
GRAPHICS
PLOT page,
LIST
DISPLAY
page, MATRIX
DISPLAY
page, or
SCHMOO
PLOT
Page
is
displayed,
measurement
is started
by pressing SINGLE,
REPEAT, or APPEND.
Measurement
can be
stopped
by pressing
STOP.
Measurement
is
a sequential
operation
consisting
of voltage
or current
sweep, measure-ment,
and storage
of the measurement
result.
SINGLE:
When this key is pressed,
results
of the previous
measurement
are
erased
from
memory,
the
new
measurement
is made,
and
the
results are stored in memory.
REPEAT : When
this
key
is
pressed,
measurement
is repeatedly
made
until
STOP is pressed.
Results
of the previous
measurement
are
updated
during
each
new
mea-
surement.
APPEND : Functions
similarly
to
the
SINGLE
key except
that
results
of the previous
measurement
are
not erased
from
memory
of the
CRT.
Results
of a measurement
made using this key are stored in
the remaining
unused portion
of
memory
and are displayed
over
(overlay
plot)
the previous
plot.
Measurement
can be made using
this
key
until
"Buffer
full"
is
displayed.
STOP :
Immediately
stops the
measure-
ments.
@
AUTO
SEQ Key:
These keys start
and stop the
ASP (Auto
Sequence
Program)
listed
on the
SETUP
AUTO
SEQUENCE
page*
Refer
to
paragraph
3-61 for details
on Auto Sequence
Programs.
START/STOP
: Starts
the ASP from
line 1.
If pressed
during
the
ASP,
the ASP stops immediately.
Once
stopped,
the
ASP
cannot
be
continued
from
the stop point.
CONT:
If
the
ASP
contains
a
PAUSE statement,
this key
continues
the program
from
the line immediately
follow-
ing the PAUSE statement.
@
INTEG
TIME
Keys:
These
keys are used to select
the digital
integration
time.
When
MED
or
LONG
integration
is selected,
the integration
time
is an integral
number
of the line frequency
period,
eliminating
line
frequency
noise.
SHORT
is the
initial
control
setting.
The
integration
time
can
be
changed
at
any
time,
even during measurement.
SHORT : Measurement
data
is
stored
directly
into
memory
without
integration.
MED :
Integration
time
is set to one line
frequency
period.
Sixteen
samples
are
taken
at
each
measurement
point.
LONG:
Integration
time
is set to sixteen
line frequency
periods.
A total
of
256 samples
are
taken
at
each
measurement
point.
Figure 3-2.
Front Panel Features
(Sheet 2 of 6).
3-3
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