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Keithley Manuals
AC Power Distribution
6221 DC
User manual
Keithley 6221 DC User Manual
6220 dc current source 6221 ac and dc current source
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Contents
Table of Contents
Bookmarks
Table of Contents
Safety Precautions
Table of Contents
1 Getting Started
Introduction
User's Manual Content and Structure
Capabilities and Features
General Information
Warranty Information
Contact Information
Safety Symbols and Terms
Unpacking and Inspection
Options and Accessories
Front and Rear Panel Familiarization
Front Panel Summaries
Figure 1-1 Models 6220 and 6621 Front Panels
Rear Panel Summaries
Getting Started
Figure 1-2 Model 622X Rear Panel
Heat Sink and Cooling Vents
Power-Up
Line Power Connection
Source Preset
Disabling the Front Panel
Menus
CONFIG Menus
Direct Access Menus
Editing Controls
Source and Compliance Editing
Menu Navigation
Figure 1-3 Menu Editing Keys
Password
Remote Interface
Error and Status Messages
Default Settings
Save and Restore Setups
Select Power-On Setup
SCPI Programming
Optional Command Words
Query Commands
2 Output Connections
Figure 2-2 lo and GUARD Banana Jacks
Figure 2-3 INTERLOCK
Output Connectors
Triax Connector
Ground Points
LO and GUARD Banana Jacks
Interlock
Output Configurations
Triax Inner Shield
Triax Output Low
Guards
Triax Cable Guard
Connections to DUT
Supplied Triax Cable
Basic Connections
Shields and Guarding
Figure 2-7 Noise Shield
Figure 2-8 Safety Shield
Figure 2-9 Cable Guard Connections – Triax Inner Shield Connected to Cable Guard
Floating the Current Source
Using a Test Fixture
600 DC Current Source Operation
Current Source Output Capabilities
Source Ranges
Compliance
Output Power (Source or Sink)
Output Response
Setting Source and Compliance
Source and Compliance Editing
Autorange
Source Preset
Sourcing Current
Remote Programming - Source Output Commands
Table 3-2 DC Output Commands
Applications
4 Sweeps
Sweep Overview
Linear Staircase Sweep
Logarithmic Staircase Sweep
Custom Sweep
Figure 4-1 Comparison of Sweep Types
Sweep Characteristics
Custom Sweep Editing
Using Auto-Copy with Custom Sweeps
Source Ranging
Sweep Delay
Front Panel Sweep Operation
Using the Sweep Configuration Menu
Performing a Staircase Sweep
Performing a Custom Sweep
Remote Sweep Operation
Running a Staircase Sweep
Running a Custom Sweep
SCPI Commands - Sweeps
Table 4-4 Custom (List) Sweep Commands
5 Delta, Pulse Delta, and Differential Conductance
Operation Overview
Figure 5-1 Delta, Pulse Delta, and Differential Conductance Measurements
Test Systems
Keithley Instrumentation Requirements
System Configurations
System Connections
Figure 5-3 System Connections – Stand-Alone Operation
Figure 5-4 System Connections – PC Control of Model 622X
DUT Test Connections
Configuring Communications
Triggering Sequence
Readings
Display Readings
Measurement Units
Table 5-1 Measurement Unit Commands
Read Commands
Delta
Model 622X Measurement Process
Figure 5-6 Delta Measurement Technique
Configuration Settings
Operation
Setup and Arm Commands
Table 5-2 Delta Commands
Pulse Delta
Model 6221 Measurement Process
Pulse Delta Outputs
Figure 5-8 Pulse Timing
Figure 5-9 Pulse Sweep Output Examples
Configuration Settings
Operation
Setup Commands
Table 5-3 Pulse Delta Commands
Differential Conductance
Model 622X Measurement Process
Figure 5-10 Differential Conductance Measurement Process
Configuration Settings
Operation
Setup and Arm Commands
Table 5-4 Differential Conductance Commands
6 Averaging Filter, Math, and Buffer
Averaging Filter
Averaging Filter Characteristics
Filter Setup and Control
Remote Programming - Averaging Filter
Math
MX+B and M/X+B (Reciprocal)
Configuring MX+B and M/X+B
Remote Programming - Math
Table 6-3 Math Commands
Buffer
Buffer Characteristics
Storing Readings
Recall
Figure 6-1 Buffer Recall
Table 6-4 Buffer Commands
7 Wave Functions (6221 Only)
Wave Function Overview
Setting Waveform Parameters
Ranging
Frequency
Offset
Duty Cycle
Phase Marker
Duration
Externally Triggered Waveforms
Front Panel Wave Function Operation
Using the Wave Function Menu
Generating a Sine Wave
Generating an Arbitrary Waveform
Remote Wave Function Operation
Programming Sine Waves
Programming Arbitrary Waveforms
SCPI Commands - Wave Functions
Table 7-4 Waveform Function Commands
Specifications
Table B-1 Calculate Command Summary
Table B-2 Display Command Summary
Table B-3 Format Command Summary
Table B-4 Output Command Summary
Table B-5 Sense Command Summary
Table B-6 Source Command Summary
Table B-7 Status Command Summary
Table B-8 System Command Summary
Table B-9 Trace Command Summary
Table B-10 Trigger Command Summary
SCPI Tables (Abridged)
Table B-11 Units Command Summary
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www.keithley.com
Model 6220 DC Current Source
Model 6221 AC and DC Current Source
Users Manual
622x-900-01 Rev. C / October 2008
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Summarization of Contents
Warranty and Limitations
Warranty
Details Keithley Instruments' warranty terms and conditions for product defects.
Limitation of Warranty
Outlines exclusions and limitations on Keithley Instruments' product warranty coverage.
Safety Precautions
General Safety Information
Provides essential safety precautions for operating the instrument and associated equipment.
Safety Symbols and Terms
Explains safety symbols and terms used within the manual and on the instrument.
Getting Started Guide
Introduction and Manual Structure
Overview of the user manual's content, structure, and capabilities.
Capabilities and Features
Details the core capabilities and features of the Model 6220/6221 current source.
General Information and Contact
Provides general information, contact details, and warranty information.
Front and Rear Panel Familiarization
Familiarizes users with the controls and indicators on the front and rear panels.
Power-up and Basic Operation
Guides users through powering up the instrument and initial operational steps.
Menus and Editing Controls
Explains how to navigate menus and use editing controls for configuration.
Source and Compliance Editing
Details the process for editing source values and compliance settings.
Output Connections and Configuration
Output Connectors and Triax Details
Describes the output connectors, including triax terminals and their configurations.
Ground Points and Banana Jacks
Explains ground points, LO and GUARD banana jacks for connections.
INTERLOCK and Safety Features
Details the INTERLOCK connector for safety and operational control.
Output Configurations and Shielding
Covers various output configurations and shielding methods for signal integrity.
Guards and Cable Guarding
Explains the use of guards and triax cable guard for reduced leakage and capacitance.
Connections to DUT and Basic Wiring
Provides guidance on connecting the device under test and basic wiring practices.
DC Current Source Operation
Current Source Output Capabilities
Details the output capabilities, including ranges, compliance, and power.
Compliance Settings and Operation
Explains voltage compliance settings, overshoot, and operational boundaries.
Output Response and Analog Filter
Describes output response time and the use of the analog filter for signal conditioning.
Setting Source and Compliance Values
Provides step-by-step instructions for setting source and compliance values.
Sourcing Current and Remote Control
Guides users on sourcing current and using remote programming commands.
Sweeps Operation
Sweep Overview and Types
Introduces sweep functions and describes linear, logarithmic, and custom sweeps.
Sweep Characteristics and Editing
Details sweep characteristics, editing custom sweeps, and source ranging.
Front Panel Sweep Operation
Explains how to configure and run sweeps using the front panel interface.
Remote Sweep Operation and Commands
Provides instructions for programming and running sweeps remotely via SCPI.
Delta, Pulse Delta, and Differential Conductance Measurements
Operation Overview and Test Systems
Introduces measurement modes and outlines required instrumentation and system configurations.
System Connections and Communications
Details system connection diagrams and communication setup for remote operation.
DUT Test Connections and Arming
Covers test connections, guarding, and arming procedures for measurements.
Readings and Measurement Units
Explains how readings are displayed, units can be set, and data is processed.
Delta Measurement Process and Calculations
Details the delta measurement process, including calculation formulas and techniques.
Pulse Delta Operation and Settings
Describes Pulse Delta measurements, output types, and configuration settings.
Differential Conductance Measurements
Explains differential conductance measurement process, calculations, and settings.
Averaging Filter, Math, and Buffer Functions
Averaging Filter Operation and Control
Details averaging filter types, characteristics, setup, and control methods.
Math Functions (mX+b, m/X+b)
Explains the use of math functions for manipulating measurement results.
Buffer Operations and Statistics
Describes buffer functionality, data storage, statistics, and recall.
Wave Functions (Model 6221 Only)
Wave Function Overview and Parameters
Introduces waveform types and their basic characteristics and parameters.
Setting Waveform Parameters
Guides users on editing amplitude, offset, units, and ranging for waveforms.
Frequency, Offset, and Duty Cycle
Details frequency settings, DC offset, and duty cycle for waveform generation.
Phase Marker and Duration Control
Explains phase marker settings and waveform duration control.
Front Panel Wave Function Operation
Provides step-by-step instructions for configuring and generating waveforms via the front panel.
Generating Sine and Arbitrary Waveforms
Guides on generating specific waveform types like sine and arbitrary patterns.
Remote Wave Function Operation
Details SCPI commands for programming and controlling waveforms remotely.
Specifications
SCPI Command Tables (Abridged)
Calculate Command Summary
Lists SCPI commands for calculations, including math and buffer statistics.
Display Command Summary
Summarizes SCPI commands for controlling the instrument's display.
Format Command Summary
Lists SCPI commands for specifying data and status register formats.
Output Command Summary
Details SCPI commands for controlling the source output and interlock.
Sense Command Summary
Lists SCPI commands for reading data and controlling averaging filters.
Source Command Summary
Provides a comprehensive list of SCPI commands for source control.
Status Command Summary
Lists SCPI commands for querying and managing status registers.
System Command Summary
Details SCPI commands for system configuration, interfaces, and settings.
Trace Command Summary
Lists SCPI commands for controlling buffer tracing and timestamping.
Trigger Command Summary
Summarizes SCPI commands for trigger initiation and control.
Units Command Summary
Details SCPI commands for setting measurement units.
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