Keithley 4200-SCS Reference Manual page 620

Section 8: Keithley User Library Tool (KULT)
Clear trigger
clrtrg
Purpose
Format
Remarks
Example
Figure 8-90
clrtrg example
8-104
double res1[14], res2[14];
.
conpin(SMU1, 1, 0);
conpin(SMU2, 2, 0);
conpin(GND, 3, 0);
forcev(SMU1, 4.0);/* Apply 4V to gate. */
smeasi(SMU2, res1);/* Measure drain current in */
/* each step; store results */
/* in res1 array. */
sweepv(SMU2, 0.0, 14.0, 13,
2.0E-2);/* Perform 14 measurements */
/* over a range 0 through 14V. */
clrscn();/* Clear smeasi. */
forcev(SMU1, 5.0);/* Apply 5 V to gate. */
smeasi(SMU2, res2);/* Measure drain current in */
/* each step; store results in */
/* res2 array. */
sweepv(SMU2, 0.0, 14.0, 13,
2.0E-2);/* Perform 14 measurements */
/* over a range 0 through 14V. */
Clears the user-selected voltage or current level used to set trigger points. This permits
the use of trigXl or trigXg more than once with different levels within a single test
sequence.
int clrtrg(void);
searchX, sweepX, asweepX, or bsweepX, each with different voltage or current
levels, may be used repeatedly within a function provided each is separated by a
clrtrg.
The following example collects data and constructs a graph showing the forward and
reverse conduction characteristics of a diode. clrtrg allows multiple triggers to be
programmed twice in the same test sequence. Each result is returned to a separate array.
5
I (ma)
4
3
2
1
-25 -15
.1 .2 .3 .4 .5
-.2
V (volts)
-.4
-.6
Return to
Pin 1
Pin 2
Section Topics
Model 4200-SCS Reference Manual
HI
Current
Meter
LO
Voltage
Source
SMU1
4200-901-01 Rev. S / May 2017