Keithley S530 User Manual

Section
3: LPTLib command reference S530/S540 KTE Linear Parametric Test Library (LPTLib) User's Manual
3-18 S530-900-01 Rev. E / September 2017
Example
double res1[14], res2[14];
.
conpin(SMU1, 1, 0);
conpin(SMU2, 2, 0);
conpin(GND, 3, 0);
forcev(SMU1, 4.0); /* Apply 4 V 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); /* Make */
/* 14 measurements */
/* over a range of 0 V to 14 V. */
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 V through 14 V. */
In this example, the sweepX command configures SMU2 to source a voltage that sweeps from 0 V through
+14 V in 14 steps. The results of the first sweepv command are stored in an array called res1. Because
of the clrscn command, the data and pointers associated with the first sweepv command are cleared.
Then 5 V is forced to the gate, and the measurement process is repeated. Results from these second
measurements are stored in an array called res2.
This example gets the measurement data needed to create a graph showing the gate voltage-to-drain
current characteristics of a field-effect transistor (FET). The program samples the current generated by
SMU2 14 times. This is done in two phases: First with 4 V applied to the gate, and then with 5 V applied.
The gate voltages are generated by SMU1.
Figure 1: S530/S540 gate voltage-to-drain current characteristics
Also see
sweepX (on page 3-88)

Keithley S530 Specifications

General

Brand	Keithley
Model	S530
Category	Test Equipment
Language	English

Summary

Safety Precautions

General Information

Introduction

Overview of the manual's structure and content.

Manual Contents

Details the structure and information presented in each section.

Linear Parametric Test Library (LPTLib)

Introduction

Introduces the Keithley LPTLib as a low-level software interface for parametric testers.

Measuring

Discusses the tester's ability to make measurements, including ordinary, integrated, and averaged.

Ranging

Discusses automatic range selection (autoranging) and its features like smart and sticky ranging.

Optimizing Test Sequences

Introduces methods to optimize the S530/S540 for faster operation.

LPTLib Command Reference

Conventions Used in this Manual

Explains conventions like case-sensitivity and parameter formatting.

Source Commands

Lists commands for controlling sources like forceX, limitX, pulseX.

Measure Commands

Lists commands for measurements like avgX, bmeasX, intgX.

Pulse Generator Commands

Lists commands for pulse generator units (PGU) like pgu_current_limit, pgu_delay.

Error Definitions

Result Values Indicating an Error

Table of error values returned as measured results and their meanings.

Error Messages

Lists error messages with numbers, descriptions, and remarks.