Keithley 237

+
SECTlON3
IEEE-488
Reference
3.6.2
B-Bias
Purpose
Format
Parameters
Default
Description
To
program
the
de
bias
operation,
the
non-triggered
sweep
source
value,
and
the
toFF
source
value
of
pulsed
sweeps.
B(level),(range ),(delay)
level-
Specifies
the
de
bias
level
(I
or
V)
to
output:
!-source
('2:36/237)
(238)
-100.00
to+
lOO.OOmA
-1.0000
to
+
l.OOOOA
V
-source
('2:36,
238)
(237)
-110.00
to
+110.00V
-1100.0
to
+llOO.OV
range-
Selects
the
bias
range:
1-source
0=
Auto
1 =
lnA
2=
lOnA
3=
lOOnA
4
=
lJ.IA
5
=
lOJ.IA
6 =
lOOJ.IA
7=
lmA
8=
lOrnA
9=
lOOmA
10=
1A(238)
V-source
Auto
l.lV
(236, 237); 1.5V (238)
llV
(236, 237); 15V (238)
llOV
1100V(237)
*
*
*
*
*
*
*Dlegal
V -source option.
delay-
The
de
delay
in
milliseconds
(0
to
65000)
Upon
power-up,
or
after
receiving
a
DCL
or
SOC
command,
the
instrument
defaults
to
the
last
programmed
selections. A
JOX
command
restores
factory
default
values
of
OV
/OmA
bias
level,
11
V
or
15V
/lOrnA
range,
and
de
delay
of
Omsec.
The
B
command
sets
the
bias
level
of
the
instrument.
When
the
Model236
/237/238
is
programmed
for
de
operation
(F
command),
the
bias
becomes
the
de
output
level.
When
creating
a
sweep
list
(Q
command),
this
command
establishes
the
bias
for
the
sweep.
Refer
to
paragraph
3.6.5
for
the
F
command
and
3.6.15
for
the
Q
command.
Command
parameters
include
the
bias
level,
bias
range,
and
de
delay.
The
bias
range
applies
whether
in
de
or
sweep
operation.
For
sweeps,
the
range
parameter
sets
the
bias
range
before
and
after
sweeps
and,
for
pulsed
sweeps,
during
the
toFF
times.
The
specified
delay
is
used
in
de
operation.
If
presently
in
sweep
operation,
the
delay
will
be
retained
for
use
when
in
de
operation.
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3-19