Name: Keithley SourceMeter 2420
Brand: Keithley
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2400 Series SourceMeter

User’s Manual Source-Measure Concepts 6-39

Figure 6-20

In-circuit ohms measurements using guard sense

GUARD (Ohms

mode)

B. Remote Guard Sense

A. Local Guard Sense

SourceMeter

1Ω

Test lead resistance

IN/OUT

100Ω

10kΩ

20kΩ

GUARD (Ohms

mode)

1Ω

IN/OUT

100Ω

10kΩ

20kΩ

GUARD

SENSE

SourceMeter

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Default Chapter8
- Table of Contents8
1 Getting Started38
- General Information39
Getting Started39
- Inspection40
- Options and Accessories40
- Product Overview42
- Front and Rear Panel Familiarization44
  - Front Panel Summary44
  - Rear Panel Summary46
- Power-Up47
- Table49
- Table52
  - Basic Display Commands52
    - Front Panel Tests53
  - Default Settings53
- Table54
  - Remote Setups57
  - Table 1-5 Main Menu58
- Main Menu Tree60
  - Rules to Navigate Menus61
    - Toggling the Source and Measure Display Fields62
    - Front Panel Control63
  - Measurement Conﬁguration Menus64
- Table64
  - Figure64
  - Source and Range Conﬁguration Menus65
- Table65
  - Figure65
  - Rel, Filter, and Limit Conﬁguration Menus66
- Table66
  - Figure66
  - Trigger Conﬁguration Menu68
- Table68
  - Sweep, Digits, Speed, and Data Store Conﬁguration Menus69
- Table69
  - Output and Display Conﬁguration Menus70
- Table70
  - Sweep, Digits, Speed, and Output Conﬁguration Menus71
- Connection Overview75
- 2 Wire Local Sensing80
  - Guarded Ohms Measurements (Ohms Guard)83
    - Sense and Guard Selections84
    - Guard Selection85
3 Basic Source-Measure Operation87
- Warning - Caution87
- Operation Overview88
- Source-Measure Capabilities88
- Table89
  - Table 3-2 Compliance Limits91
  - Compliance Commands92
- Table92
  - Setting the Compliance Limit92
  - Figure93
- Operation Considerations94
- Table103
  - Step 6: Turn Output off103
  - Basic Source-Measure Programming Example104
- Table104
  - Figure105
  - Measure Only Programming Example106
- Table106
4 Ohms Measurements110
- Figure111
- Table112
- Remote Commands for Basic Ohms Measurements121
- Table121
  - Remote Ohms Programming121
  - Auto Ohms Programming Example122
5 Pulse Mode Operation (Model 2430 Only)124
- Figure125
- Pulse Characteristics126
- Pulse Energy Limitations (10A Range)132
  - Pulse Mode Conﬁguration133
  - Disable/Enable Auto Zero134
- Basic Pulse Mode Operation135
  - Step 4: Select Source136
  - Step 7: Turn Output on137
- Table138
  - Basic Pulse-Measure Commands138
  - Remote Command Pulse-Measure Operation138
- Table139
  - Basic Pulse Programming Example139
6 Source-Measure Concepts144
- Table146
- Table 6-1 Compliance Limits146
- I-Source Operating Boundaries164
  - Voltage Compliance Boundaries167
- V-Source Operating Boundaries169
- Source I Measure I and Source V Measure V173
- Basic Circuit Conﬁgurations174
- Figure 6-15 Source I174
- Source V175
  - Figure 6-17 Measure Only (V or I)176
  - Guard177
- Ohms Guard178
- Figure 6-18 High-Impedance Measurements179
- Figure 6-19 In-Circuit Ohms Measurements180
- Guard Sense181
- Figure 6-20 In-Circuit Ohms Measurements Using Guard Sense182
- Data Flow183
8 Relative and Math204
- Table204
  - Rel Programming Example204
    - Remote Rel Programming204
  - Math Operations205
- Table 8-1 Rel Commands204
- Table209
  - Math Programming Example209
  - Commands for User-Deﬁned Math Functions210
- Voltage Coefﬁcient Programming Example209
- Table210
9 Data Store216
- Timestamp Accuracy216
- Table 9-1 Data Store Commands217
- Remote Command Data Store217
- Table 9-2 Data Store Example218
- Sweep Operation220
11 Triggering254
- Remote Trigger Commands255
- Front Panel Trigger Operation255
- Remote Trigger Operation264
- Remote Trigger Commands271
- Operation Model for Triggering Example280
  - Remote Trigger Example281
  - Table 11-2 Commands for Remote Triggering Example281
- Trigger Model for Remote Trigger Example282
- Pulse Mode Triggering (Model 2430)283
- Pulse Mode Trigger Model (Front Panel Operation)284
- Pulse Mode Trigger Model (Remote Operation)285
  - Idle286
  - Output Triggers287
- Limit Testing288
12 Limit Testing289
- Figure 12-1 Limit Tests289
- Types of Limits289
  - Pass/Fail Information290
  - Limit 2, Limit 3, and Limit 5-12 Tests291
- Operation Overview292
- Sorting Mode296
- Figure297
- Binning Systems298
- Figure 12-6 Handler Interface Connections298
- Commands to Control Digital I/O Port for Limit Testing311
- Digital I/O Port, Safety Interlock, and Output Conﬁguration314
13 Digital I/O Port, Safety Interlock, and Output Configuration315
- Figure 13-1 Digital I/O Port315
- Output-Off States321
  - Zero322
  - Output-Off States and Inductive Loads323
- Output Conﬁguration Commands324
- Remote Output Conﬁguration324
- Output Conﬁguration Programming Example325
- Remote Operations326
  - Differences: Remote Vs. Local Operation327
14 Remote Operations329
- Programming Syntax336
- RS-232 Connector Pinout345
  - RS-232 Interface Connector345
  - Table 14-3 PC Serial Port Pinout345
- Figure350
15 Status Structure350
- Common and SCPI Commands to Reset Registers and Clear Queues351
- Figure 15-2 16-Bit Status Register352
- Data Format Commands for Reading Status Registers353
  - Status Byte and Service Request (SRQ)354
    - Status Byte Register355
    - Service Request Enable Register356
- Status Byte and Service Request Enable Register Commands357
- Status Byte Programming Example357
  - Status Register Sets358
- Condition Register Commands363
- Event Register Commands363
  - Condition Registers363
- Event Enable Registers Commands364
- Program and Read Register Programming Example365
16 Common Commands368
- Command Summary369
- Table 16-1 IEEE-488.2 Common Commands and Queries369
- Command Reference370
- Table 16-2 *OPC Programming Example371
- SAV, *RCL Programming Example372
- TRG Programming Example373
- WAI — Wait-To-Continue374
17 SCPI Signal Oriented Measurement Commands376
- Figure377
- Signal Oriented Measurement Command Summary377
- Acquiring Readings378
  - Sense[1]]:Data[:Latest]?379
  - Measure[:<Function>]?380
18 SCPI Command Reference382
- Reference Tables383
- Calculate Command Summary384
- Display Command Summary389
- Format Command Summary390
- Output Command Summary390
- Table 18-5 Route Command Summary391
- Table 18-6 Sense Command Summary391
- Source Command Summary394
- Status Command Summary399
- System Command Summary400
- Table 18-10 Trace Command Summary402
- Table 18-11 Trigger Command Summary403
- Calculate Subsystems405
  - Program Examples407
    - Delete[:Selected] <Name>410
    - Deﬁne Math Expression411
  - Enable and Read Math Expression Result414
  - Display Subsystem427
    - Attributes?428
    - Deﬁne :TEXT Messages429
- Format Subsystem430
  - Figure 18-2 IEEE-754 Single Precision Data Format (32 Data Bits)431
  - Data Elements432
  - Source2 <Name>436
  - Byte Order437
- Output Subsystem438
  - Interlock Control439
- Route Subsystem440
- Sense1 Subsystem441
  - ON] <Function List>442
  - Count?443
  - Resistance:mode <Name>444
  - Select Measurement Range445
  - Upper] <N>446
  - Select Auto Range448
  - Soak Time480
- Status Subsystem485
  - Select Default Conditions486
  - Auto Range Change Mode498
    - Clear499
    - FEED <Name>500
- Trigger Subsystem501
  - Abort Source/Measure Cycle502
  - Introduction521
- Table B-1 Status and Error Messages522
- Eliminating Common SCPI Errors527
- Query UNTERMINATED"528
  - Introduction531
  - Fetch?532
  - Calculate[1]:Data?533
- IEEE-488 Bus Overview534
  - Introduction535
500 D IEEE-488 Bus Overview536
- Bus Description536
- Figure D-1 IEEE-488 Bus Conﬁguration537
- Bus Lines538
- Figure D-2 IEEE-488 Handshake Sequence539
- IEEE-488 Bus Command Summary540
  - Bus Commands540
    - Uniline Commands541
    - Addressed Multiline Commands542
- Common Commands543
- Table D-2 Hexadecimal and Decimal Command Codes543
- Figure D-3 Command Codes544
- Table D-3 Typical Addressed Multiline Command Sequence545
- Table D-4 Typical Addressed Common Command Sequence545
  - Typical Command Sequences545
- Table D-5 IEEE Command Groups546
- Sourcemeter Interface Function Codes547
- Introduction551
- Table E-1 IEEE-488 Documentation Requirements552
- IEEE-488 and SCPI Conformance Information553
  - Table E-2 Coupled Commands553
F Contact Check Function554
100 C Data Flow555
- Introduction555
  - Block Diagram556
  - Operation557
- Table F-1 Recommended Contact Resistance Threshold Values558
- Contact Check Menu Selections564
  - Auto Clear Off, Immediate Binning564
  - Using Contact Check565
    - Using Event Detection with Contact Check566
- Contact Check Remote Commands567
- Contact Check Programming Example569
- Contact Check Command Reference570
  - Fail?571
  - Conﬁgure and Control Contact Check Event Detection572
- Contact Check Defaults573
- TOUT <Nrf>573
GPIB 488.1 Protocol574
- Introduction575
- Protocol Differences576
  - NRFD Hold-Off577
  - Trigger-On-Talk578
- Table G-1 SCPI/488.1 Reading Speed Comparisons for Measure-Only Sweep Operation (Rdgs/Sec)579
- Table G-2 SCPI/488.1 Reading Speed Comparisons for Source-Measure Sweep Operation (Rdgs/Sec)579
- Table G-3 SCPI/488.1 Reading Speed Comparisons for Source-Measure-Limit Test Sweep Operation (Rdgs/Sec)580
- Table G-4 SCPI/488.1 Reading Speed Comparisons for Source-Memory Sweep Operation (Rdgs/Sec)580
- SCPI/488.1 Reading Speed Comparisons for Measure-Only Single-Shot Operation (Rdgs/Sec581
- SCPI/488.1 Reading Speed Comparisons for Source-Measure Single-Shot Operation (Rdgs/Sec581
- SCPI/488.1 Reading Speed Comparisons for Source-Measure-Limit Test Single-Shot Operation (Rdgs/Sec581

Keithley SourceMeter 2420 User Manual

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Brand	Keithley
Model	SourceMeter 2420
Category	Measuring Instruments
Language	English