
Section 3: LPTLib command reference
S530/S540 KTE Linear Parametric Test Library (LPTLib) User's Manual
3-42
S530-900-01 Rev. E / September 2017
This command must be called in the test sequence before the associated
force
X
,
sweep
X
, or
search
X
command is used to generate the voltage or current. The
limit
X
command also sets the
top measurement range of an autoranged measurement.
The limits set within a particular test sequence are cleared when the
devint
command is called.
Example
double ibceo, vbceo;
.
.
conpin(2, 3, GND, 0);
conpin(SMU1, 1, 0);
limitv(SMU1, 150.0); /* Limit voltage at 150 V. */
forcei(SMU1, ibceo); /* Force current through the DUT. */
measv(SMU1, &vbceo); /* Measure breakdown voltage; */
. /* return results to vbceo. */
.
This example measures the breakdown voltage of a device. The limit is set at 150 V. This limit is
necessary to override the default limit of the SMU, which would otherwise be in effect.
Also see
(on page 3-26)
(on page 3-29)
(on page 3-45)
(on page 3-60)
(on page 3-71)
lorangeX
This command defines the bottom autorange limit.
Usage
int lorangei(int
instr_id
, double
range
);
int lorangev(int
instr_id
, double
range
);
instr_id
The instrument identification code
range
The value of the instrument range, in volts, amperes, farads, or siemens