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Keithley 6220 User Manual

Keithley 6220
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16-2 Performance Verification Model 6220/6221 Reference Manual
Return to Section 16 topics
Introduction
WARNING The information in this section is intended only for qualified
service personnel. Do not attempt these procedures unless
you are qualified to do so.
Information is provided in this section to offer recommendations to the owner of
the Model 622x to perform test procedures to the extent that is required by their
quality system in the event that they have elected not to return the instrument to
Keithley for routine verification/calibration. Any verification procedure for this
instrument should account for measurement uncertainties that arise from test
equipment tolerances.
Before proceeding, the laboratory should characterize the components used with
the testing process in order to correct for test equipment tolerance and to estimate
measurement uncertainty appropriately.
NOTE The test procedures in this section provide a rela-
tively low-cost method of verifying instrument
performance. The techniques used for these tests
should be adequate for most users. However, in
some cases, measurement uncertainty may not be
sufficient for those with more stringent require-
ments. If necessary, contact your Keithley repre-
sentative or the factory for information on more
comprehensive procedures to verify Model 622x
performance.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com

Table of Contents

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Keithley 6220 Specifications

General IconGeneral
Voltage Resolution1 µV
Compliance Voltage±10 V
InterfaceGPIB, RS-232
Output ModesDC, Pulse, Sweep
Power Requirements100-240 VAC, 50/60 Hz
Dimensions8.4 in × 3.5 in × 13.8 in

Summary

Manual Print History

Safety Precautions

Output Connections

Output Connectors

Details on the triax and banana jack connectors used for current source output.

Guards

Overview of Triax Cable Guard and Banana Jack Guard for high impedance DUT measurements.

Connections to DUT

Information on using the supplied triax cable and basic connections to the Device Under Test.

Using a Test Fixture

Guidance on connecting the Model 622x to custom-built test fixtures.

DC Current Source Operation

Current Source Output Capabilities

Details on current ranges, voltage compliance, output power, and output response.

Setting Source and Compliance

Procedures for setting source and compliance values via front panel and remote operation.

Sourcing Current

Steps to source current, including connecting the DUT and enabling the output.

Sweeps

Sweep Characteristics

Details on linear staircase, logarithmic staircase, and custom sweep characteristics.

Front Panel Sweep Operation

Instructions for configuring and running sweeps using the front panel.

Remote Sweep Operation

Procedures for programming and running sweeps remotely using SCPI commands.

Delta, Pulse Delta, and Differential Conductance

Overview

Introduction to Delta, Pulse Delta, and Differential Conductance measurements.

Test Systems

Requirements and configurations for Delta, Pulse Delta, and Differential Conductance tests.

Data Flow and Read Commands

Explanation of data flow and commands for reading measurements.

Measurement Units

Details on selecting Volts, Ohms, Power, or Conductance units for readings.

Delta

Basic measurement process and technique for Delta measurements.

Pulse Delta

Measurement process and techniques for Pulse Delta measurements.

Differential Conductance

Measurement process and calculations for Differential Conductance.

Averaging Filter, Math, and Buffer

Averaging Filter

Explanation of moving and repeating averaging filters for noisy measurements.

Math

Details on mX+b and m/X+b functions for manipulating delta readings.

Buffer

Information on buffer characteristics, storing readings, and recalling data.

Wave Functions (6221 Only)

Wave Function Characteristics

Summary of characteristics for sine, square, ramp, and arbitrary waveforms.

Front Panel Wave Function Operation

Procedures for generating waveforms using the front panel menus.

Remote Wave Function Operation

Commands for programming and generating waveforms remotely.

Triggering

Trigger Models

Overview of trigger models for sweep control and operation.

Front Panel Trigger Operation

Steps for configuring triggering functions using the front panel menu.

Remote Trigger Operation

Example of using remote trigger configuration to enhance sweeps.

External Triggering

Details on external trigger connectors, requirements, and examples.

Limit Test and Digital I/O

Limit Test

Overview of limit testing to check compliance and set fail patterns.

Digital I/O Port

Description of the digital I/O connector, applications, and +5V output.

Remote Operations

Selecting and Configuring an Interface

Guidance on selecting and configuring GPIB, RS-232, and Ethernet interfaces.

Programming Syntax

Explanation of syntax for common and SCPI commands.

GPIB Interface Reference

Details on GPIB bus standards, connections, and commands.

RS-232 Interface Reference

Information on RS-232 data transfer, settings, and connections.

Ethernet Interface Reference

Details on Ethernet standards, systems, connections, and settings.

Using the Example Software

Guidance on using the provided example software for instrument control.

Status Structure

Overview

Introduction to status registers and queues for monitoring instrument events.

Clearing Registers and Queues

Commands to reset status registers and clear queues.

Programming and Reading Registers

How to ascertain parameter values for programming enable registers.

Status Byte and Service Request (SRQ)

Explanation of the status byte register and service request enable register.

Status Register Sets

Description of condition, event, and enable registers for status reporting.

Common Commands

Common Commands

Summary of IEEE-488.2 common commands and queries.

DISPlay, FORMat, and SYSTem Key-Press Codes

DISPlay Subsystem

Commands to control the display remotely and manage text messages.

FORMat Subsystem

Commands to select data formats for transferring delta data over the bus.

SYSTem Key-Press Codes

Mapping of front panel key presses to SYSTem commands.

SCPI Reference Tables

General Notes

General syntax rules and definitions for SCPI commands.

Calculate Command Summary

Summary of SCPI commands for math and limit testing.

Display Command Summary

Summary of SCPI commands for controlling the instrument display.

Format Command Summary

Summary of SCPI commands for selecting data formats.

Output Command Summary

Summary of SCPI commands for controlling the output state.

Sense Command Summary

Summary of SCPI commands for readings from the Model 2182/2182A.

Source Command Summary

Summary of SCPI commands for current source output.

Status Command Summary

Summary of SCPI commands for reading status registers.

System Command Summary

Summary of SCPI commands for system configuration and control.

Trace Command Summary

Summary of SCPI commands for buffer control.

Trigger Command Summary

Summary of SCPI commands for trigger configuration.

Units Command Summary

Summary of SCPI commands for setting measurement units.

KI-220 Language

Introduction

Overview of using the KI-220 language mode for Model 220 emulation.

Performance Verification

Introduction

Overview of performance verification procedures for qualified service personnel.

Test Requirements

Conditions, warm-up period, line voltage, and equipment needed for verification.

Recommended Test Equipment

List of recommended test equipment and their key specifications.

Calculating Test Limits

Guidance on calculating test limits based on accuracy specifications.

Restoring Factory Defaults

Procedure to restore the instrument to its factory default settings.

Test Summary and Considerations

Overview of test procedures and important considerations before testing.

Verification Procedures

Detailed steps for verifying DC current output, compliance, and waveform accuracy.

Calibration

Introduction

Overview of calibration procedures for service personnel.

Calibration Requirements

Conditions, warm-up period, line power, and equipment for calibration.

Recommended Calibration Equipment

List of recommended equipment and their specifications for calibration.

Restoring Factory Defaults

Procedure to restore the instrument to factory defaults before calibration.

Calibration Summary and Considerations

Summary of calibration procedures and important considerations.

Calibration Procedures

Detailed steps for front panel and remote calibration.

SCPI Commands — Calibration

Reference table for SCPI commands used in calibration.

Calibration Dates, Count, and Password

How to view calibration dates/count and change the calibration password.

Specifications

Error and Status Messages

Introduction

Overview of coded error and status messages and the error queue.

IEEE-488 Bus Overview

Introduction

Description of the IEEE-488 bus as a communication system.

Bus Description

Overview of IEEE-488 bus signal lines and device operators.

Bus Lines

Description of data, management, and handshake bus lines.

Bus Commands

Explanation of uniline, multiline, common, and SCPI bus commands.

Common Commands

Commands common to all devices on the bus.

SCPI Commands

Commands particular to each device, based on SCPI standards.

Interface Function Codes

Codes defining instrument capabilities for interface functions.

IEEE-488 and SCPI Conformance Information

Introduction

Summary of IEEE-488.2 requirements and SCPI compliance.

Applications

Calibration Source

Using the Model 622x as a current calibration source with custom sweeps.

Resistivity Measurements

Test system setup for measuring resistivity of semiconductor materials.

Diode Characterization

Simple test system for plotting I-V characteristics of a diode.

Transistor Characterization

Using the Model 622x with a SourceMeter to characterize BJT DC parameters.

External User-Supplied Filter

Using a user-supplied filter to reduce high frequency noise from the Model 622x.

Compliance Overshoot Prevention

Options to prevent or minimize compliance overshoot.

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