Tektronix Keithley SourceMeter 2470

Tektronix Keithley SourceMeter 2470

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2470

High Voltage SourceMeter Instrument Reference Manual Section 6:

Reading buffers

2470-901-01 Rev. A / May 2019 6-19

Figure 117: Example of spreadsheet with reading buffer content Sheet 1

Figure 118: Example of spreadsheet with reading buffer content Sheet 2

The following table describes the information that is stored in each column of the spreadsheet.

Table of Contents

Default Chapter6
- Table of Contents6
Introduction24
- Welcome24
- Extended Warranty25
- Contact Information25
- Organization of Manual Sections25
- Features26
- General Ratings27
Installation33
- Handle and Bumpers33
  - Removing the Handle and Bumpers33
- Instrument Power35
  - Connect the Power Cord35
  - Power the Instrument on or off36
- Remote Communications Interfaces36
- Instrument Access64
- Determining the Command Set You will Use66
- System Information67
Instrument Description69
- Front-Panel Overview69
- Rear-Panel Overview71
- Turn the 2470 Output on or off72
- Touchscreen Display73
- Screen Descriptions77
  - Home Screen77
- Menu Overview87
- Display Features108
- Instrument Sounds112
- Saving Setups113
- Resets117
  - Reset the Instrument118
- Using the Event Log118
- Saving Front-Panel Settings into a Macro Script121
Sourcing and Measuring124
- Basic Connections124
- Using the Interlock125
- Front- or Rear-Panel Test Connections127
- Two-Wire Compared to Four-Wire Measurements129
- Test Fixtures136
- Output-Off State138
- Source-Measure Overview141
- Protection155
  - Overvoltage Protection156
  - Source Limits157
- Ranges159
  - Source Range159
  - Measurement Range161
- Automatic Reference Measurements164
  - Setting Autozero165
- Source Readback166
- Relative Offset168
  - Establishing a Relative Offset Value169
  - Disabling the Relative Offset171
- Calculations that You Can Apply to Measurements171
- Sweep Operation176
- Limit Testing and Binning188
  - Limit Testing Using the Front-Panel Interface188
  - Set up a Limit Test Using the Remote Interface190
- Configuration Lists205
Source-Measure Considerations227
- Circuit Configurations227
  - Source Current228
  - Source Voltage229
- Operating Boundaries230
  - Current Source Operating Boundaries231
  - Voltage Limit Boundary Examples231
  - Current Limit Boundary Examples233
- Output Transient Recovery234
- Load Regulation234
- Using Nplcs to Adjust Speed and Accuracy235
- Noise Shield237
- Safety Shield237
  - Safety Shielding238
- Noise and Chassis Ground238
- Floating the 2470239
- Guarding241
  - Using Guard with a Test Fixture242
  - Guard Circuit Drawing242
- Sink Operation243
- Battery Charge and Discharge244
- Measurement Settling Time Considerations245
- Overtemperature Protection246
- Current Breakdown Protection246
- Calculating Accuracy247
  - Calculating Source or Measure Accuracy247
  - Calculate Accuracy of a Resistance Measurement Made by Sourcing I and Measuring V248
- Offset-Compensated Ohm Calculations249
- Power Calculations249
- High-Capacitance Operation250
  - Enabling the High Capacitance Feature250
- Filtering Measurement Data251
  - Repeating Average Filter251
  - Moving Average Filter252
  - Setting up the Averaging Filter252
- Order of Operations253
- Reset Default Values254
  - Default Values254
Reading Buffers261
- Introduction to Reading Buffers261
- Getting Started with Buffers262
- Creating Buffers265
- Setting Reading Buffer Options269
  - Setting Reading Buffer Capacity270
  - Setting the Fill Mode272
- Selecting a Buffer274
- Using the Front Panel to Store Readings in the Selected Buffer277
- Viewing and Saving Buffer Content278
- Clearing Buffers284
- Deleting Buffers285
- Remote Buffer Operation285
Graphing293
- Setting up the Graph Tab293
- Using the Graph Tab296
- Binning Data with the Histogram297
  - Setting up the Histogram298
Triggering299
- Measurement Methods299
- Triggering301
- Digital I/O310
- Trigger Model325
TSP-Link and TSP-Net355
- TSP-Link System Expansion Interface355
- TSP-Net367
Maintenance372
- Introduction372
- Line Fuse Replacement372
- Front-Panel Display373
- Upgrading the Firmware374
Introduction to SCPI Commands379
- Introduction to SCPI379
  - Command Execution Rules379
  - Command Messages379
- SCPI Command Programming Notes381
  - SCPI Command Formatting381
  - Using the SCPI Command Reference383
- Acquiring Readings Using SCPI Commands387
SCPI Command Reference388
- Fetch388
- Measure391
- Read393
- Rcl396
- Sav396
- Calculate Subsystem397
- Digital Subsystem411
- Display Subsystem415
- Format Subsystem421
- Output Subsystem424
- Route Subsystem427
  - Route:terminals427
- Script Subsystem428
- Sense1 Subsystem429
- Source Subsystem455
- Status Subsystem483
- System Subsystem490
- Trace Subsystem504
- Trigger Subsystem529
Introduction to TSP Commands587
- Controlling the Instrument by Sending Individual Command Messages587
- Queries589
- USB Flash Drive Path589
- Information on Scripting and Programming590
- Fundamentals of Scripting for TSP590
- Fundamentals of Programming for TSP598
- Test Script Builder (TSB)617
- Suggestions for Increasing the Available Memory627
- About TSP Commands627
TSP Command Reference641
- TSP Syntax Rules641
- Time and Date Values642
- Local and Remote Control642
- Using the TSP Command Reference644
  - Command Name, Brief Description, and Summary Table645
  - Command Usage646
  - Command Details647
  - Example Section647
  - Related Commands and Information647
- TSP Commands648
  - Beeper.beep()648
  - Buffer.clearstats()648
  - Buffer.delete()649
  - Buffer.getstats()650
  - Buffer.make()652
  - Buffer.save()654
  - Buffer.saveappend()655
  - Buffervar.capacity657
  - Buffervar.clear()658
  - Buffervar.dates660
  - Buffervar.endindex661
  - Buffervar.extravalues662
  - Buffervar.fillmode663
  - Buffervar.formattedreadings664
  - Buffervar.fractionalseconds665
  - Buffervar.logstate666
  - Buffervar.n666
  - Buffervar.readings668
  - Buffervar.relativetimestamps669
  - Buffervar.seconds670
  - Buffervar.sourceformattedvalues671
  - Buffervar.sourcestatuses672
  - Buffervar.sourceunits673
  - Buffervar.sourcevalues675
  - Buffervar.startindex676
  - Buffervar.statuses677
  - Buffervar.times678
  - Buffervar.timestamps679
  - Buffervar.units681
  - Buffer.write.format683
  - Buffer.write.reading()684
- Createconfigscript()686
- Dataqueue.add()687
- Dataqueue.capacity688
- Dataqueue.clear()688
- Dataqueue.count689
- Dataqueue.next()689
- Delay()691
- Digio.line[N].Mode692
- Digio.line[N].Reset()693
- Digio.line[N].State695
- Digio.readport()695
- Digio.writeport()696
- Display.changescreen()697
- Display.clear()698
- Display.delete()698
- Display.input.number()699
- Display.input.option()701
- Display.input.prompt()703
- Display.input.string()704
- Display.lightstate706
- Display.prompt()707
- Display.readingformat708
- Display.settext()709
- Display.waitevent()710
- Eventlog.clear()711
- Eventlog.getcount()711
- Eventlog.next()712
- Eventlog.post()714
- Eventlog.save()715
- Exit()716
- File.close()716
- File.flush()717
- File.mkdir()718
- File.open()719
- File.read()720
- File.usbdriveexists()721
- File.write()721
- Format.asciiprecision722
- Format.byteorder723
- Format.data724
- Gpib.address725
- Lan.ipconfig()726
- Lan.lxidomain727
- Lan.macaddress727
- Localnode.access728
- Localnode.gettime()729
- Localnode.linefreq729
- Localnode.model730
- Localnode.password730
- Localnode.prompts731
- Localnode.prompts4882732
- Localnode.serialno732
- Localnode.settime()733
- Localnode.showevents734
- Localnode.version735
- Node[N].Execute()736
- Node[N].Getglobal()737
- Node[N].Setglobal()737
- Opc()738
- Print()739
- Printbuffer()740
- Printnumber()743
- Reset()744
- Script.delete()744
- Script.load()745
- Scriptvar.run()745
- Scriptvar.save()746
- Scriptvar.source747
- Smu.breakdownprotection747
- Smu.interlock.tripped749
- Smu.measure.autorange750
- Smu.measure.autorangehigh751
- Smu.measure.autorangelow752
- Smu.measure.autozero.enable753
- Smu.measure.autozero.once()754
- Smu.measure.configlist.catalog()754
- Smu.measure.configlist.create()755
- Smu.measure.configlist.delete()756
- Smu.measure.configlist.query()757
- Smu.measure.configlist.recall()758
- Smu.measure.configlist.size()759
- Smu.measure.configlist.store()760
- Smu.measure.count761
- Smu.measure.displaydigits763
- Smu.measure.filter.count764
- Smu.measure.filter.enable765
- Smu.measure.filter.type766
- Smu.measure.func767
- Smu.measure.limit[Y].Audible768
- Smu.measure.limit[Y].Autoclear769
- Smu.measure.limit[Y].Clear()769
- Smu.measure.limit[Y].Enable770
- Smu.measure.limit[Y].Fail771
- Smu.measure.limit[Y].High.value773
- Smu.measure.limit[Y].Low.value773
- Smu.measure.math.enable774
- Smu.measure.math.format775
- Smu.measure.math.mxb.bfactor776
- Smu.measure.math.mxb.mfactor777
- Smu.measure.math.percent778
- Smu.measure.nplc779
- Smu.measure.offsetcompensation780
- Smu.measure.range781
- Smu.measure.read()782
- Smu.measure.readwithtime()783
- Smu.measure.rel.acquire()784
- Smu.measure.rel.enable785
- Smu.measure.rel.level786
- Smu.measure.sense787
- Smu.measure.unit788
- Smu.measure.userdelay[N]789
- Smu.reset()790
- Smu.source.autorange791
- Smu.source.autodelay792
- Smu.source.configlist.catalog()792
- Smu.source.configlist.create()793
- Smu.source.configlist.delete()794
- Smu.source.configlist.query()795
- Smu.source.configlist.recall()796
- Smu.source.configlist.size()797
- Smu.source.configlist.store()798
- Smu.source.delay799
- Smu.source.func800
- Smu.source.highc800
- Smu.source.level801
- Smu.source.offmode802
- Smu.source.output804
- Smu.source.protect.level804
- Smu.source.protect.tripped805
- Smu.source.range806
- Smu.source.readback807
- Smu.source.sweeplinear()808
- Smu.source.sweeplinearstep()810
- Smu.source.sweeplist()812
- Smu.source.sweeplog()814
- Smu.source.userdelay[N]816
- Smu.source.xlimit.level817
- Smu.source.xlimit.tripped818
- Smu.terminals818
- Status.condition819
- Status.clear()819
- Status.operation.condition821
- Status.operation.enable821
- Status.operation.event822
- Status.operation.getmap()823
- Status.operation.setmap()823
- Status.preset()824
- Status.questionable.condition825
- Status.questionable.enable825
- Status.questionable.event826
- Status.questionable.getmap()827
- Status.questionable.setmap()827
- Status.request_Enable828
- Status.standard.enable829
- Status.standard.event831
- Timer.cleartime()832
- Timer.gettime()832
- Trigger.blender[N].Clear()833
- Trigger.blender[N].Orenable833
- Trigger.blender[N].Overrun834
- Trigger.blender[N].Reset()834
- Trigger.blender[N].Stimulus[M]835
- Trigger.blender[N].Wait()837
- Trigger.digin[N].Clear()838
- Trigger.digin[N].Edge839
- Trigger.digin[N].Overrun840
- Trigger.digin[N].Wait()840
- Trigger.digout[N].Assert()841
- Trigger.digout[N].Logic842
- Trigger.digout[N].Pulsewidth843
- Trigger.digout[N].Release()844
- Trigger.digout[N].Stimulus844
- Trigger.lanin[N].Clear()846
- Trigger.lanin[N].Edge846
- Trigger.lanin[N].Overrun847
- Trigger.lanin[N].Wait()848
- Trigger.lanout[N].Assert()848
- Trigger.lanout[N].Connect()849
- Trigger.lanout[N].Connected850
- Trigger.lanout[N].Disconnect()851
- Trigger.lanout[N].Ipaddress851
- Trigger.lanout[N].Logic852
- Trigger.lanout[N].Protocol852
- Trigger.lanout[N].Stimulus853
- Trigger.model.abort()854
- Trigger.model.getblocklist()855
- Trigger.model.getbranchcount()855
- Trigger.model.initiate()856
- Trigger.model.load() - Configlist857
- Trigger.model.load() - Durationloop858
- Trigger.model.load() - Empty859
- Trigger.model.load() - Gradebinning859
- Trigger.model.load() - Logictrigger861
- Trigger.model.load() - Loopuntilevent862
- Trigger.model.load() - Simpleloop864
- Trigger.model.load() - Sortbinning865
- Trigger.model.setblock() - Trigger.block_Branch_Always867
- Trigger.model.setblock() - Trigger.block_Branch_Counter867
- Trigger.model.setblock() - Trigger.block_Branch_Delta868
- Trigger.model.setblock() - Trigger.block_Branch_Limit_Constant869
- Trigger.model.setblock() - Trigger.block_Branch_Limit_Dynamic871
- Trigger.model.setblock() - Trigger.block_Branch_On_Event872
- Trigger.model.setblock() - Trigger.block_Branch_Once873
- Trigger.model.setblock() - Trigger.block_Branch_Once_Excluded874
- Trigger.model.setblock() - Trigger.block_Buffer_Clear875
- Trigger.model.setblock() - Trigger.block_Config_Next875
- Trigger.model.setblock() - Trigger.block_Config_Prev877
- Trigger.model.setblock() - Trigger.block_Config_Recall879
- Trigger.model.setblock() - Trigger.block_Delay_Constant880
- Trigger.model.setblock() - Trigger.block_Delay_Dynamic881
- Trigger.model.setblock() - Trigger.block_Digital_Io882
- Trigger.model.setblock() - Trigger.block_Log_Event883
- Trigger.model.setblock() - Trigger.block_Measure884
- Trigger.model.setblock() - Trigger.block_Nop885
- Trigger.model.setblock() - Trigger.block_Notify886
- Trigger.model.setblock() - Trigger.block_Reset_Branch_Count886
- Trigger.model.setblock() - Trigger.block_Source_Output887
- Trigger.model.setblock() - Trigger.block_Wait888
- Trigger.model.state()890
- Trigger.timer[N].Clear()891
- Trigger.timer[N].Count892
- Trigger.timer[N].Delay893
- Trigger.timer[N].Delaylist894
- Trigger.timer[N].Enable895
- Trigger.timer[N].Reset()896
- Trigger.timer[N].Start.fractionalseconds897
- Trigger.timer[N].Start.generate897
- Trigger.timer[N].Start.overrun898
- Trigger.timer[N].Start.seconds899
- Trigger.timer[N].Start.stimulus899
- Trigger.timer[N].Wait()901
- Trigger.tsplinkin[N].Clear()901
- Trigger.tsplinkin[N].Edge902
- Trigger.tsplinkin[N].Overrun903
- Trigger.tsplinkin[N].Wait()904
- Trigger.tsplinkout[N].Assert()904
- Trigger.tsplinkout[N].Logic905
- Trigger.tsplinkout[N].Pulsewidth906
- Trigger.tsplinkout[N].Release()906
- Trigger.tsplinkout[N].Stimulus907
- Trigger.wait()908
- Tsplink.group909
- Tsplink.initialize()910
  - Tsplink.line[N].Mode911
  - Tsplink.line[N].Reset()912
  - Tsplink.line[N].State913
  - Tsplink.master913
  - Tsplink.node914
  - Tsplink.readport()914
  - Tsplink.state915
  - Tsplink.writeport()916
  - Tspnet.clear()916
  - Tspnet.connect()917
  - Tspnet.disconnect()918
  - Tspnet.execute()919
  - Tspnet.idn()920
  - Tspnet.read()921
  - Tspnet.readavailable()922
  - Tspnet.reset()923
  - Tspnet.termination()923
  - Tspnet.timeout924
  - Tspnet.tsp.abort()925
  - Tspnet.tsp.abortonconnect925
  - Tspnet.tsp.rbtablecopy()926
  - Tspnet.tsp.runscript()927
  - Tspnet.write()927
  - Upgrade.previous()928
  - Upgrade.unit()929
  - Userstring.add()929
  - Userstring.catalog()930
  - Userstring.delete()931
  - Userstring.get()931
  - Waitcomplete()932
Frequently Asked Questions934
- I See a Command that Is Not in the Manual. What Is It934
- How Do I Display the Instrument's Serial Number935
- What VISA Resource Name Is Required935
- Can I Use Keysight GPIB Cards with Keithley Drivers935
- How Do I Check the USB Driver for the Device936
- Which Microsoft Windows Operating Systems Are Supported937
- What to Do if the GPIB Controller Is Not Recognized938
- I'M Receiving GPIB Timeout Errors. What Should I Do938
- How Do I Change the Command Set938
- How Do I Upgrade the Firmware939
- Where Can I Find Updated Drivers940
- Why Can't the 2470 Read My USB Flash Drive941
- How Do I Download Measurements Onto the USB Flash Drive941
- How Do I Save the Present State of the Instrument942
- Why DID My Settings Change943
- What Is NPLC943
- What Are the Quick Setup Options944
- What Is the Output-Off State944
- Why Is OVP Displayed946
- How Do I Store Readings into the Buffer947
- What Should I Do if I Get an 5074 Interlock Error948
- How Do I Trigger a Sweep948
- What Are Source Limits948
- What Is Offset Compensation949
- What Is a Configuration List949
- What Does -113 "Undefined Header" Error Mean950
- Why Do I See the "Incompatible Settings" Message950
- What Does -410 "Query Interrupted" Error Mean950
- What Does -420 "Query Unterminated" Error Mean951
- How Do I Use the Digital I/O Port951
- How Do I Trigger Other Instruments951
Next Steps952
- Additional 2470 Information952
Common Commands953
- Introduction953
Status Model963
- Overview963
- Serial Polling and SRQ975
- Programming Enable Registers976
- Reading the Registers976
- Understanding Bit Settings977
- Clearing Registers978
- Status Model Programming Examples979
Index988

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