Keithley 237 - Page 132

SECTION2
Operation
2.21.1
Sweep Modification Procedure
Perform
the
following
steps
to
modify
the
currently
de-
fined
sweep
waveform:
Step
1.
Enable
Sweep
MODIFY.
The
source level
at
the
first
measure
point
will
be
dis-
played. For example,
if
the
source level
at
the
first
point
is
1
V,
the following
will
be
displayed:
0001
+
1.0000 V
SRC
Step
2.
Modify
Source
Levels
The
rotary
knob
will
display
the
source
level for
each
measure
point
in
the
sweep.
To
change
a
source
level,
perform
the
following steps:
1.
Use
the
rotary
knob
to
display
the
measure
point
whose
source level is
to
be
changed.
2. Key-in
the
new
source
level
from
the
keypad.
3.
Press
ENTER
The
source
range
for
the
original
source level will
be
displayed.
For
example,
if
in
autorange,
the
following
will
be
displayed:
AUTO
RANGE
4.
If
an
alternate
source
range
is
needed
or
desired,
use
the
SELECT
buttons
to
display
it.
Note
that
the
source
range
must
be
able
to
accommodate
the
new
source value.
5. Press
ENTER
The
newly
entered
source
value
will
be
displayed.
6.
Repeat
steps
1
through
5
to
change
the
source
level
at
another
measure
point.
Step
3.
Modify
Delay
Times
If
one
or
more
delay
times
are
going
to
be
changed,
per-
form
the
following steps. Otherwise,
proceed
to
step
4.
1.
Press
SELECT
•.
The
delay
time
for
one
of
the
meas-
ure
points
will
be
displayed
as
shown
in
the
follow-
ing
example:
0005 00.500
SEC
DLY
2.
Use
the
rotary
knob
to
display
the
measure
point
whose
delay
is
to
be
changed.
3. Key-in
the
new
delay
time
from
the
keypad.
2-80
+
+
4. Press
ENTER
The
newly
entered
delay
time
will
be
displayed.
5.
Repeat
steps
1
through
4
to change
the
delay
time
at
another
measure
point.
Step
4.
Exit
Modify
State
To
return
the
Source
Measure
Unit
to
the
normal
source-
measure
display
state
press
either
Sweep
MODIFY
or
ENTER
NOTES:
1.
Sweep
MODIFY
can
only
be
enabled
if
the
Source
Measure
Unit
is
in
the
source-measure
display
state.
2.
A non-existent
sweep
cannot
be
modified.
2.21.2 IEEE-488 Operation
Over
the
IEEE-488
bus,
the
A
command
is
used
to
modify
a
sweep
list.
When
this
command
is
sent,
one
point
or
consecutive
points
can
be
modified
to
the
specified
pa-
rameters.
A(level) ,(range),( delay) ,(first) ,(last)
With
this
command,
the
level,
range
and
delay
period
are
established for
the
point(s) specified
by
the
"first"
and
"last'' parameters.
Range-
Source
range:
1-source
0=
Auto
1=
InA
2=
lOnA
3=
lOOnA
4=
lJ.LA
5
=
IOJ.LA
6=
IOOJ.LA
7=
lmA
8=
lOrnA
9=
lOOmA
10=
1A(238)
"Dlegal V-source
option
V-source
Auto
I.
IV
(236, 237);
1.5V (238)
llV
(236, 237);
15V
(238)
llOV
1100V(237)
*
*
*
*
*
*