Keithley 4200A-SCS Reference Manual page 1040

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Model 4200A-SCS Parameter Analyzer Reference Manual

Programming example #2

Performs a single staircase voltage sweep, as shown in the figure below.

CpGp is measured on each step of the sweep.

Test parameters:

AC drive frequency = 100 kHz

AC drive voltage = 15 mV

Measure model = CpGp

Measure range = Auto

Sweep mode = single

Start voltage = 1 V

Stop voltage = 3 V

Number of steps = 3

Delay = 50 ms

This example also returns a timestamp for each measurement and measures the execution time of

double result1[4], result2[4], timeStamp1[4], timeStamp2;

enable(TIMER1);

setfreq(CVU1, 100e3);

setlevel(CVU1, 15e-3);

setauto(CVU1);

smeasz(CVU1, KI_CVU_TYPE_CPGP, KI_CVU_SPEED_NORMAL, result1, result2);

smeast(CVU1, timeStamp1);

rtfary(forceArray);

sweepv(CVU1, 1, 3, 3, 0.05);

meast(TIMER1, &timeStamp2);

4200A-901-01 Rev. C / February 2017

Figure 516: Voltage sweep example

Start timer at 0 seconds. */

Set AC drive frequency to 100 kHz. */

Set AC drive voltage to 15 mV RMS. */

/* Select auto measure range. */

Configure CpGp measurements. */

/* Return timestamps for all measurements. */

Return array of force voltages. */

Configure and perform sweep. */

Return execution time for above. */

block of code. */

Reset CVU. */

Section 13: LPT library function reference