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1. When capturing multiple screen shots in succession the following error would sometimes occur 2350 Internal SPLAT drop packet to input queue Resolution This issue has been corrected Models affected All 2450 models Symptom VISA Device Clear over USB sometimes causes timeout and data loss Resolution This issue has been corrected Models affected All 2450 models Symptom Under certain test setups RST and front panel reset will cause voltage spike at the output Resolution Voltage spikes after RST and front panel reset have been greatly reduced Models affected All 2450 models Symptom 14 2450 850 FRP Rev E June 2015 Model 2450 Firmware Release Notes Version v1 2 0f Release AR42086 PR54659 When sourcing current on the 100mA range or lower and the instrument ranges up to the 1A range the source value may be incorrectly rounded Resolution This issue has been corrected Models affected All 2450 models Symptom When source read back is turned off the programmed source values are returned If the programmed values are less than 1 volt the returned values are incorrect due to rounding problems Resolution This issue has been corrected Enhancements PR48621 PR53367 Models affected All 2450 models Enhancement Implement and document procedure for Clearing Memory and Data Sterilization for the Model 2450 This document can be requested from the Keithl2. 2450 850 FRP Rev E June 2015 33 Version v1 0 0i Release Known issues Model 2450 Firmware Release Notes smu measure func smu FUNC_RESISTANCE g New SCPI Command Usage i Manual Ohms see definition above e SOURce FUNC VOLTage e SENSe 1 FUNC CURRent e SENSe 1 CURRent UNIT OHM OR e SOURce FUNC CURRent e SENSe 1 FUNC VOLTage e SENSe 1 VOLTage UNIT OHM ii Auto Ohms see definition above SENSe 1 FUNC RESistance h Front panel user interface setting of Manual vs Auto Ohms measurements lt see the following figure for details gt Source Voltage Source Current and Measure and Measure Exhibits Auto Ohms behavior SVMR SVMI 0 sSiMV 0 Hu aia Both exhibit Manual PET Meat Ohms behavior works just like Power by setting units to Ohms and going to SVMI or SIMV 34 2450 850 FRP Rev E June 2015 Model 2450 Firmware Release Notes Version v1 0 0i Release PR49955 PR50042 PR50188 Cannot repeatedly reconnect with LAN triggers Models affected All 2450 Symptom Certain scripts where LAN connections are quickly and repeatedly disconnected and reconnected in rapid succession may cause a failed connection Workaround Due to limited socket resources the safest rate of making LAN connections is 1 connection per second If there is need for more than one LAN connection per second the total number of
3. Date was added to display and differentiate between the Adjust Date and Calibration without adjust Date The new Adjust Date is the same field as the old Calibration Adjust Date The new Calibration Date is brand new field and this will be the date the 2450 was last calibrated WITHOUT adjustment Since the new Calibration Date field did not exist with v1 0 0i firmware this new date is un initialized and has defaulted to 03 16 1996 Again this has zero impact on the original factory calibration and does not impact the factory stored calibration constants in any way Workaround This date will be properly set the next time the 2450 is returned to Keithley or a designated field service office for recalibration If you insist on updating the Calibration Date to equal the Adjust Date please refer to the Model 2450 Interactive SourceMeter Calibration Manual This manual can be found at www keithley com The document is 2450 905 01 2450 850 FRP Rev E June 2015 39
4. E A E A E E 29 Version v1 0 0i lt gt gt nono non nn n antenn nana anna nn AREA EEEE AEEA EE EEE EE EERDER EEEE nana nana n cana naananana 30 ALE APP ect atest aa e ae A II E fake aed Ale 30 Compatibility CONCE S dcnsriara clic ti eeutnbadtanshuatiesvestrewcadessadevasteevecntebbece fcanecttebsceueeha sees 30 OTT Leta ARONA IE II 30 Enhancements sassis dia 30 NoncrticalfixeS enn e PO AI AE AA E AEE AA E EE 30 NP E E E A E E EAE a OAA OP 30 2450 850 FRP Rev E June 2015 1 General Information Supported models Model 2450 Firmware Release Notes General Information Supported models This firmware is intended for use on the following Keithley Instruments product models 2450 2450 NFP 2450 RACK 2450 NFP RACK ATTENTION CRITICAL ATTENTION CRITICAL ATTENTION CRITICAL If you are upgrading firmware from v1 0 0i TO ANY OTHER FIRMWARE REVISION EVER it is critical that firmware upgrade be run 2 TIMES in order for all firmware components to be upgraded correctly Firmware v1 1 0s fixes an issue with the firmware upgrade code inside the 2450 and this requires that the upgrade be performed 2 TIMES either from the front panel or any remote upgrade process If you are at firmware revision v1 1 0s or later then you only need to run firmware upgrade one time NOTE When using Test Script Builder TSB to Flash from v1 0 0i the same requirement applies and the UPGRADE DOWNGRADE option needs to be run twice
5. 0mA It order to speed things up and to better measure voltages on more inductive loads the default source range for the Voltmeter QuickSet has been changed from 10uA to 10mA 10 2450 850 FRP Rev E June 2015 Model 2450 Firmware Release Notes Version v1 3 0s Release PR56127 Models affected All 2450 models Enhancement Add an API command to mark the start of a group for writable buffers A status optional parameter has been added to the following TSP and SCPI commands SCPI TRACe WRITe READing lt standard writable reading buffer gt lt reading value gt lt time sec gt lt time nsec gt lt status gt TRACe WRITe READing lt full writable reading buffer gt lt reading value gt lt extra value gt lt time sec gt lt time nsec gt lt status gt TSP buffer write reading lt standard writable reading buffer gt lt reading value gt lt time sec gt lt time nsec gt lt status gt buffer write reading lt full writable reading buffer gt lt reading value gt lt extra value gt lt time sec gt lt time nsec gt lt status gt The optional status parameter indicates if the reading being added is start of group for plotting on the graph The default is O Set this to 0 if not start of group or set to 256 if start of group This parameter only accepts O or 256 any other value generates an error For TSP buffer STAT_START_GROUP can be used to set it You wou
6. 5 Model 2450 Firmware Release Notes Version v1 1 0s Release Known issues PR48636 PR49308 Model 2450 does not respect a USB Flash drive file that is read only Models affected 2450 Symptom The 2450 will write over read only files on flash drives For example if the 2450 attempts to write to file aaa txt and aaa txt is marked read only the 2450 will rewrite file aaa txt without warning This problem does NOT suggest the 2450 randomly overwrites arbitrary files on a flash drive Workaround There is no known workaround for this issue at this time trigger BLOCK_BRANCH_COUNTER loop without a measure or delay block appears to hang SCPI TRIGger BLOCk BRANch COUNter TSP trigger model setblock with trigger BLOCK_BRANCH_COUNTER Models affected 2450 Symptom When running a tight trigger loop without a measurement or delay in the sequence the 2450 will be unresponsive until the loop ends Workaround Add any measurement or short delay in the trigger loop and the 2450 will perform normally A future firmware release will work around this problem automatically 2450 850 FRP Rev E June 2015 29 Version v1 0 0i Release Overview Model 2450 Firmware Release Notes Version v1 0 0i Release Overview Version 1 0 0i is the initial firmware release for the Model 2450 No fixes are listed since this is the very first firmware release Known Issues Usage Notes and Upcoming Enhancements are list
7. 50 FRP Rev E June 2015 5 Version v1 3 0s Release Critical Fixes Model 2450 Firmware Release Notes PR55188 AR42592 PR55281 AR42407 PR55600 PR55867 AR43082 READ Query always returns the last reading at the end of the continuous butter Models affected All 2450 models Symptom For example if a basic measurement is set up to defbuffer1 size 10000 and then takes 11000 readings the last 1000 readings will all return the same value This should act as a circular buffer Resolution This issue has been corrected Problem with certain trigger block configurations Models affected All 2450 models Symptom If setting several Notify Blocks with Line 1 as PASS signal trigger Line 2 as FAIL signal trigger and Line 4 as EOT signal trigger for example in the Trigger Flow you will find any single Notify Block with Line X would give out trigger out signals on Line 1 2 4 in the same time Resolution This issue has been corrected TRG command trigger source does not work in SCPI mode trigger model Models affected All 2450 models Symptom Using a trigger model wait block with the command event in SCPI does not work when TRG is sent Instead it generates the following error gt Error 2713 No trigger model engine available Resolution This issue has been resolved Now the TRG command will satisfy the wait block when sent if waiting for a command event 1uA Current Source error when
8. 6 8 116 and 9 14 b The term Auto Ohms has been removed from the user interface The user interface now presents Ohmmeter as a One Touch Quick Setup see diagram below c The term Manual Ohms has been removed from the user interface The user interface now presents Resistance as a Measure function vs Voltage or Current Source see diagram below d The following commands have been eliminated i SENSe 1 RESistance MODe AUTO MANual SCPI section 6 46 ll smu measure resistancemode smu RESISTANCE_AUTO or smu RESISTANCE_MANUAL TSP section 8 116 e The following existing commands have a new argument as follows i SENSe 1 lt function gt UNIT WATT OHM VOLT AMP section 6 ii smu measure unit lt WATT gt lt OHM gt lt VOLT gt lt AMP gt f New TSP Command Usage i Manual Ohms 3 Measures resistance by sourcing voltage measuring current and calculating the resistance reading o smu source func smu FUNC_DC_ VOLTAGE o smu measure func smu FUNC_DC_CURRENT smu UNIT_OHM e smu measure unit OR e smu source func smu FUNC_DC_CURRENT e smu voltage func smu FUNC_DC_ VOLTAGE e smu measure unit smu UNIT_OHM ii Auto Ohms 3 Measures resistance by sourcing current measuring voltage and calculating the resistance reading In this case the source current and source limit are automatically calculated and set
9. AIT block of the trigger model The CLEAR of ENTER or NEVER was added the WAIT block on the trigger screen Models affected All 2450 models Enhancement Add a TRIGger LOAD command that takes a template name as a first argument Old Command New Command TRIGger LOAD EMPTy TRIGger LOAD Empty TRIGger LOAD CONFiguration LIST TRIGger LOAD ConfigList lt parameter list as before gt TRIGger LOAD TRIGger EXTernal TRIGger LOAD LogicTrigger lt parameter list as before gt TRIGger LOAD LOOP SIMPle TRIGger LOAD SimpleLoop lt parameter list as before gt TRIGger LOAD LOOP DURation TRIGger LOAD DurationLoop lt parameter list as before gt lt not present gt TRIGger LOAD LoopUntilEvent lt parameter list as before gt lt not present gt TRIGger LOAD GradeBinning lt parameter list as before gt lt not present gt TRIGger LOAD SortBinning lt parameter list as before gt Example before TRIGger LOAD LOOP DURation lt duration gt lt delay gt lt reading buffer gt after TRIGger LOAD lt duration gt lt delay gt lt readingBuffer gt Usage Notes The template name is not case sensitive o The template name needs to be in quotes o This makes the SCPI command more like the TSP equivalent trigger model load command o See the Reference Manual for more details O Models affected All 2450 models Enhancement Change the Voltmeter default source range from 10uA to 1
10. AL Better explanation of sweep delay needed Models affected All 2450 Symptom Recent changes to the sweep commands did not get added to the 2450 Reference Manual in time for first release Workaround The sweep commands accept a delay setting of O for no delay 1 for auto delay excluding the list command or constant value between 50 us and 10000 s The TSP sweep commands are smu source sweeplinear smu source sweeplinearstep smu source sweeplist smu source sweeplog The SCPI sweep commands are SOURce 1 SWEep lt function gt LINear SOURce 1 SWEep lt function gt LINear STEP SOURce 1 SWEep lt function gt LIST SOURce 1 SWEep lt function gt LOG For smu source sweeplist and SOURce 1 SWEep lt function gt LIST the delay setting configures a constant delay trigger block in the trigger model A delay of zero omits the trigger block The configuration list delay settings act independently of the delay specified in the command Therefore a double delay may result by utilizing both The next version of the 2450 Reference Manual will be updated PR49835 Recalling measure configuration list causes error 823 Models affected All 2450 Symptom When recalling the measure configuration list before the source configuration list the error code 823 may be displayed Workaround When recalling both source and measure configuration lists always recall the source configuratio
11. E Internet 22 2450 850 FRP Rev E June 2015 Model 2450 Firmware Release Notes Version v1 1 0s Release PR50906 Models affected All 2450 models Enhancement 2450 Quick Start Guide User Manual and Reference Manuals have all been updated The 2450 Release Notes for Firmware Revision v1 1 0s have also been updated and are available at the Keithley Instruments Inc website Click Here 3 http www keithley com products dcac currentvoltage 2450smu path 2450 Documents PR50231 Models affected All 2450 models Enhancement Implement and document procedure for Customer onsite Calibration of Model 2450 This capability is scheduled to be available late Q1 2014 Please check back at www keithley com for updates in early April 2014 PR48744 Models affected All 2450 models Enhancement Provide capability for customers to save screen capture files from the front panel to the USB Flash Drive This capability is documented in Rev C of the 2450 Reference Manual in Section 2 Page 44 2 44 In short with a valid USB Flash Drive inserted into the front USB port of the 2450 press the lt HOME gt and lt ENTER gt keys simultaneously and the current screen image will be saved to the USB Flash Drive PR50657 Models affected All 2450 models Enhancement The maximum number of characters allowed for naming a Reading Buffer on the front panel GUI was 18 characters The bus commands allow up to 32 characters The G
12. Firmware Upgrade Downgrade Instructions NOTE Do not turn off power or remove the USB flash drive until the upgrade process is complete From the front panel 1 Copy the firmware upgrade file to a USB flash drive The file is ki_2450_v1_3_0s upg 2 Verify that the upgrade file is in the root subdirectory of the flash drive and that it is the only firmware upgrade file in that location 2450 firmware files end with the file extension upg example H ki_2450_v1_3 Os upg Disconnect any input and output terminals that are attached to the instrument Turn on instrument power Insert the flash drive into the USB port on the front panel of the instrument From the instrument front panel press the MENU key Under System select Manage Select the type of upgrade you want to do To upgrade to a newer version of firmware Select Upgrade to New To force downgrading to an older version of firmware Select Downgrade to Older 9 If the instrument is controlled remotely a message is displayed Select Yes to continue 10 When the upgrade is complete reboot the instrument 11 If you started with firmware revision v1 0 0i then GO TO STEP 6 and RUN STEPS 6 THROUGH 10 A SECOND TIME ONDA OW NOTE A message is displayed while the upgrade is in progress For additional information about upgrading the firmware refer to the How do Upgrade Firmware topic in the Frequently Asked Questions FAQs section of the Model 2450 Interact
13. KEITHLEY Model 2450 System SourceMeter Keithley Instruments Inc Version v1 3 0s Firmware Release Notes 28775 Aurora Road Cleveland Ohio 44139 1891 1 888 KEITHLEY www keithley com Contents CASA 2 SUPported MOdelS cuicos cedido pdas 2 Firmware Upgrade Downgrade Instructions oooomccccinncinnccnnncccnonccnnonna nac cnnrnn nana 2 Upgrade considerations for the Model 2450 0 0ccccccconncccnnccoconccononnnnnancnann conan cnn rana 3 Version v1 3 0s Release arrincada nan nana n anno aa aaa Aa daaa SEAE n anna n EEE i aaie 4 A AN 4 Compatibilty CONCE S rig saec vas sxciat 2a cance dewsnetedas aae i a a ad savas tesceuvenssedai cadeaed aaa aE aA aaa aaa 4 A e a a a a E E A a e a E EA EA 4 Enhancements tias ei AEEA EE E tee codicia 8 NS aa a a E E E E a ceed ata E 12 KNOWNISSUOS caei a a aa A a A a 12 Version v1 2 0f Release enpa a a a a naa nana a a a aa a EAA narran a aaa aaa iaaa 13 A carat fas EE E E A E meet sdeanarvecetetsaiueeeste 15 Compatibilty CONCSMS casonas aia lala 13 GMC FOIOS recicla 13 Enhancements iii cad 15 Noncritical Fix s da abad 16 KNOWN lid 17 Version v1 1 0s Release cooononccccccconononoconcnnnononononaccnnnn nono conan anna nn cnn nn n anna n anna anna nn nnnaananana 18 ATA y AA DO fs 18 Compatibility iCONCEMS inicia A daad adaa aaia 18 Griticall Fix s aia 18 ENNANCEIMENIS a E E E Scddesevdvacanmiued pardeceuauaue dasasseccaacecuesssueioacss E 21 NoncritiGal FiXa S aaa 26 KNOWMNASSUCS PRE E EE
14. Ntlog COUNt INF OK OK SYSTem EVENtlog COUNt INFORMATIONAL OK OK SYSTem EVENtlog COUNt INFO OK SYNTAX ERROR SYSTem EVENtlog COUNt INFOR OK SYNTAX ERROR SYSTem EVENtlog COUNt INFORMAT OK SYNTAX ERROR SYSTem EVENtlog COUNt INFORMATION OK SYNTAX ERROR Workaround Only send a valid short or long form of the SCPI command parameter Based on the example listed send either INF or INFORMATIONAL for the related command This will avoid new syntax errors when upgrading to new 2450 firmware in the future Calibration Date is set to 03 16 1996 after updating 1 0 0i to 1 1 0s Models affected All 2450 Symptom After upgrading the 2450 firmware from version v1 0 0i to v1 1 0s the Calibration Date is 03 16 1996 Do NOT be alarmed This issue has NO IMPACT on calibration and calibration values The issue is that from v1 0 0i to v1 1 0s a new date field was added and it has not been initialized properly Also the date headings have also changed to differentiate between Adjust Date and Calibration Date e g Verification Date See the diagrams below 38 2450 850 FRP Rev E June 2015 Model 2450 Firmware Release Notes Version v1 0 0i Release v1 0 0i firmware v1 1 0s firmware SYSTEM INFORMATION SYSTEM INFORMATION Before there was only one date field named Calibration Adjust Date This was the date that the 2450 was last calibrated WITH adjustment Starting with the v1 1 0s firmware a new date named Calibration
15. Resistor Sorting Trigger Model Example Incorrect Models affected All 2450 models 2450 850 FRP Rev E June 2015 Model 2450 Firmware Release Notes Version v1 3 0s Release PR51544 AR40577 PR51545 AR40578 PR55123 AR42424 Symptom The examples which are explained on page 3 78 in 2450 Reference Manual 2450 901 01 Rev B September 2013 are wrong Resolution This issue has been corrected All diagrams and coding examples have been updated and verified Y Axis units on the graph do not update properly when changing functions Models affected All 2450 models Symptom When graphing measurements as a function of time and then you change functions say from resistance to current the units do not update properly on the Y axis unless you go to one of the tabs on screen and then go back to the Graph or if the unit auto scales Resolution This issue has been corrected Unit intermittently hangs up when pressing the HOME key from the Graph Page Models affected All 2450 models Symptom Intermittently when on the Graph page and then pressing the HOME key the unit will hang up and must be rebooted Resolution This issue has been corrected Autoexec script cannot be aborted Models affected All 2450 models Symptom If there is a problem with any script that has been set to run automatically at power up autoexec it cannot be aborted Resolution This issue has been corrected 2450 8
16. UI maximum number of characters has been updated to 32 to match the bus command limit PR50662 Models affected All 2450 models Enhancement 2450 850 FRP Rev E June 2015 23 Version v1 1 0s Release Model 2450 Firmware Release Notes PR50758 PR50866 PR50876 Add a password verification method to the 2450 GUI When changing the 2450 system password the user will be prompted to enter the password a second time The second entry will be used to verify that the first and second passwords match and that the intended password has indeed been entered If the two passwords do not match an error dialog is displayed and the users is instructed to try again Models affected All 2450 models Enhancement Scripts can be written in TSB and downloaded to the model 2450 However scripts do not enable the user to input values from the front panel The 26xx family of SMUs allows users to input values into their scripts real time Starting with firmware revision v1 1 0s functionality has been added to the 2450 that allows users to input values into the scripts real time from the front panel The new commands are as follows display input number display input option display input prompt display input string These commands are documented in Rev C of the 2450 Reference Manual in Section 8 Page 51 8 51 Models affected All 2450 models Enhancement The 2450 System Information window has been updated to s
17. a changes incorrectly Sometimes the actual graph area of interest will scroll out of sight Resolution This issue has been corrected The overall graph zooming capability has been dramatically improved Models affected All 2450 models Symptom In certain cases when setting up a Dual Sweep the last point of the Source Configuration List is incorrect Resolution This issue has been corrected Models affected All 2450 models Symptom There was an inconsistency in the CLS command behavior with SCPI and 2400SCPI modes In SCPI and 2400SCPI modes the Output Queue was not always cleared properly In TSP mode the command sometimes returned Error Code 410 Query Interrupted or Error Code 420 Query Unterminated Resolution This issue has been corrected 2450 850 FRP Rev E June 2015 19 Version v1 1 0s Release Critical Fixes Model 2450 Firmware Release Notes PR51046 AR39957 PR51263 AR40267 PR51051 AR40159 PR51186 AR39968 Models affected All 2450 models Symptom When a Source Configuration List is generated in the Trigger Flow Model everything works OK When the Source Configuration List is saved and then recalled the 2450 sometimes returns the Error Code 221 Conflict Error because the Currrent Range of all of the Source Points is always saved to the 100uA range Resolution This issue has been corrected Models affected All 2450 models Symptom Sometimes the Abort on Sourc
18. d display screen has been replaced with a TSP function display changescreen The parameters to the new function are the same that display screen previously took as a set attribute The SCPI query command DISPlay SCReen does not exist The DISPlay SCReen command is only intended to change the screen view NOT to query which view is active Workaround N A Need to Add Customer Calibration Models affected All 2450 Symptom Because the 2450 added two lower current ranges and one lower voltage range existing 2400 customer calibration hardware will not work on the 2450 Keithley is working on a recommended customer calibration equipment list but for now customer calibration of the 2450 is not supported Workaround Keithley plans to support customer calibration within six months after shipping the initial Model 2450 Please see www keithley com for updates Trying to print beyond buffer dimensions causes timeout for new buffer Models affected All 2450 Symptom Attempting to print buffer elements that are outside the range of 1 bufferVar n may cause a script to hang or a bus command to timeout 36 2450 850 FRP Rev E June 2015 Model 2450 Firmware Release Notes Version v1 0 0i Release Workaround Prior to using print command with a buffer or printbuf fer the elements or bounds provided should be checked to ensure that they are between 1 and buf ferVar n inclusively PR50378 Config l
19. e Limit setting does not work when the 2450 performs Voltage Sweeping and reaches the Source Limit Resolution This issue has been corrected Models affected All 2450 models Symptom Extra Current Steps occur between Current Source Range transitions when using the Source Configuration List Resolution This issue has been corrected Models affected All 2450 models Symptom 2450 crashes after long period of time running through LabVIEW Resolution This issue has been corrected 20 2450 850 FRP Rev E June 2015 Model 2450 Firmware Release Notes Version v1 1 0s Release Enhancements PR50774 Models affected All 2450 models Enhancement Implement new Virtual Front Panel capability To access the new Virtual Front Panel access the 2450 through Ethernet using your favorite Internet browser Keithley 2450 Home Windows Internet Explorer 6 jv E 134 63 79 149 File Edit View Favorites Tools Help Ve Favorites keithley 2450 Home KEITHLEY A Tektronix Company y LXI www keithley com Source Measure Unit Admin LXI Home Instrument Model 2450 IP Config Manufacturer Keithley Instruments Serial Number 01419959 Firmware Revision Virtual Front TCP Raw Socket 5025 Telnet Port Panel Last LXI Message i Ly history Reading buffer defbuffer1 is 0 filled NEW FEATURE CLICK HERE v Internet f R 100 When asked for a Username and Passw
20. ed below in this document Compatibility concerns This version of firmware cannot be installed on newer 2450 systems Also once any system is updated to firmware revision v1 2 0f or later firmware version v1 0 0i can NEVER be installed again Critical fixes N A Enhancements N A Noncritical fixes N A Known issues PR48636 Model 2450 does not respect a USB Flash drive that is read only Models affected 2450 Symptom The 2450 will write over read only files on flash drives Specifically if the 2450 attempts to write to file aaa txt and aaa ixt is marked read only the 2450 will rewrite file aaa txt without warning This problem does NOT suggest the 2450 randomly overwrites arbitrary files on a flash drive Workaround There is no known workaround for this issue at this time PR49308 Trigger BLOCK_BRANCH_COUNTER loop without a measure or delay block causes hang SCPI TRIGger BLOCk BRANch COUNter TSP trigger model setblock with trigger BLOCK_BRANCH_COUNTER Models affected 2450 Symptom When running a tight trigger loop without a measurement or delay in the sequence the 2450 will be unresponsive until the loop ends Workaround 30 2450 850 FRP Rev E June 2015 Model 2450 Firmware Release Notes Version v1 0 0i Release Simply add any measurement or short delay in the trigger loop and the 2450 will perform normally A future firmware release will work around this problem automatically PR49812 MANU
21. ed on the front panel does not match the actual Source Current Range value Resolution The default Current Source Range is now 10nA in 2450 SCPI mode Models affected All 2450 models Symptom Source Current and Source Voltage Levels have incorrect Min and Max Values SOURce 1 CURRent LEVel IMMediate AMPLitude reports that the minimum acceptable value is 1 00 and maximum is 1 00 when they should be 1 05 and 1 05 respectively Resolution This issue has been corrected 2450 850 FRP Rev E June 2015 27 Version v1 1 0s Release Noncritical Fixes Model 2450 Firmware Release Notes PR50979 PR51033 PR51205 Models affected All 2450 models Symptom If a Sweep Function encounters a Source Limit Value Event the Source will not turn off Resolution This issue has been corrected The 2450 will now automatically turn off the Source Output if a Source Limit Event occurs Models affected All 2450 models Symptom Sending IDN over USB TMC causes the unit to switch into USBTMC control instead of staying with the current active interface It also puts the trigger model back into IDLE mode Resolution This issue has been corrected Models affected All 2450 models Symptom ICL command display changescreen can lock up after the command reset is called over and over again Resolution This issue has been corrected 28 2450 850 FRP Rev E June 201
22. escreen display SCREEN_GRAPH Send Command Clear Output sl COMMAND OUTPUT LXI Home display changescreen display SCREEN_GRAPH P Config display changescreen display SCREEN_HOME beeper beep 1 3000 ee beeper beep 1 4500 print lan ipconfig Virtual Front lan MODE_AUTO 134 63 79 149 0 0 0 0 255 255 255 255 Panel print gpib address Send des Commands TSP Extract Data IDN ae KEITHLEY INSTRUMENTS INC MODEL 2450 01419959 1 1 0s elp Internet ay 100 PR51249 Models affected All 2450 models Enhancement The 2450 built in webpage has been enhanced A new button Return Error has been added to allow users to easily query the last unread error number and error message This new functionality works in both TSP and SCPI modes 2450 850 FRP Rev E June 2015 25 Version v1 1 0s Release Noncritical Fixes Model 2450 Firmware Release Notes Noncritical Fixes PR50285 PR50404 PR50670 PR50772 Models affected All 2450 models Symptom On the Manage Scripts window the Left Arrow and Delete buttons remain enabled and active even after a USB Flash Drive has been removed from the instrument Resolution This issue has been corrected Models affected All 2450 models Symptom TSP Link reset or initialization may consistently fail on some 2450 units The unit being reset may ignore the reset stop responding to bus commands and or display Slave in the Communication Status Indicator Resolutio
23. ey Instruments Quality team Models affected All 2450 models Enhancement Add SCPI equivalent for trigger LOG_WARN_ABORT Overview Version 1 2 0f is the third official firmware upgrade release for the Model 2450 Known Issues Usage Notes and Upcoming Enhancements are listed below in this document added ABORt as the equivalent trig bloc log even 1 abort abort message trig bloc list 1 LOG_EVENT EVENT 2733 MESSAGE abort message 2450 850 FRP Rev E June 2015 15 Version v1 2 0f Release Noncritical Fixes Model 2450 Firmware Release Notes Noncritical Fixes PR50249 PR50426 PR51390 PR51807 Models affected All 2450 models Symptom GPIB The SRQ annunciator does not get lit for GPIB works ok for USB and VXI 11 Resolution This issue has been corrected Models affected All 2450 models Symptom Clearing Limit 2 will clear the Limit 1 annunciator on the display instead of the Limit 2 annunciator Resolution This issue has been corrected Models affected All 2450 models Symptom The command value display input prompt display BUTTONS_YESNO Do you want to continue will cause the variable value to return nil Resolution This issue has been corrected Models affected All 2450 models Symptom Some measure attributes are not saved in the Measure Configuration List smu measure configlist recall does not
24. how calibration adjustments vs calibration without adjustment dates The System Information window now presents these dates as follows Adjust Date 11 19 2013 Adjust Count 1 Calibration Date 4 17 2014 Models affected All 2450 models Enhancement The behavior of the LANG command on the 2450 has been changed as follows Sending the query LANG over a non controlling interface will no longer change the interface control of the unit For example if the unit is under local control then sending the LANG over Telnet USB or GPIB will leave the unit under local control This was done in order for KickStart or any other remote control software to query connected accessible instruments without resetting them or changing or disturbing the current trigger model 24 2450 850 FRP Rev E June 2015 Model 2450 Firmware Release Notes Version v1 1 0s Release PR51248 Models affected All 2450 models Enhancement The 2450 built in webpage has been enhanced to show a historical list of commands recently sent to the instrument This new COMMAND OUTPUT window has been added to the Send Commands section of the webpage y Keithley 2450 Send Commands Windows Internet Explorer DAR DO Erens O __ ek File Edit View Favorites Tools Help Sy Favorites keithley 2450 Send Commands i E dp Page Tools O KEITHLEY pa A Tektronix Company www keithley com Command Set TSP o e isplay chang
25. ialization command stop responding to bus commands and or display Slave in the communications status indicator Workaround If the reset or initialization command is ignored try calling it again It may necessary to repeat this action up to ten times If the command causes a time out for bus communications and or Slave is 2450 850 FRP Rev E June 2015 37 Version v1 0 0i Release Known issues Model 2450 Firmware Release Notes PR50497 PR51449 displayed in the communications status indicator for the unit being reset or initialized then it is necessary to choose a different unit to be the TSP Link master SCPI command syntax checking Error is not generated if parameter is not valid long or short form of the specified command Models affected All 2450 Symptom The 2450 fails to generate an error when the parameter to a SCPI command does not match either the short or long form of the parameter being specified Instead the unit will accept any number of characters between the short and long form as being valid For example in the following list only the first two examples should be allowed however the additional four examples are being accepted as valid In a future firmware release the additional four examples will generate an error message COMMAND v1 0 0 Firmware Future Firmware SYSTem EVE
26. ility 2 Pinch to Zoom Performance Throughout the user interface the Pinch to zoom touch screen motion has been improved and is more responsive 3 Improve Swiping a b c d e The swipe user interface gesturing has been dramatically improved and is more responsive Added Vertical Swiping in various screens in the GUI Horizontal swiping has been made more smooth and is consistent with Vertical Swiping Fling swiping has been implemented where faster swiping actions result in rapid scrolling followed by decay based on the velocity of the fling Swipe Down on the Home screen will display larger readings 4 Tabs and Buttons Throughout the user interface multiple data display options have been made available through tabs header bars with swipe screen indicators to show how many options are available and which display tab is active defbuffer1 amm No Script JUm 00 2 000mV 5 Graphing Doan New Auto Scale Options X Axis gt Track Latest Track Group New Auto Scale Options Y Axis gt y swim lanes y shared y per trace Multi Trace Line Plots Multi Trace Scatter Plots Various refresh and performance improvements 2450 850 FRP Rev E June 2015 Model 2450 Firmware Release Notes Version v1 3 0s Release 6 Histogram a New Auto Scale Auto Bin and Fit b Smartscale choose best scaling option c Various refresh and performance improvements 7 TITI Synchronization A
27. ists generated by the sweep API don t get saved to the config script Models affected All 2450 Symptom Changes made to source config lists generated using the sweep API are not retained when saving the configuration Workaround Move all points in the config list generated using the sweep API to a new config list This can be accomplished by first creating a new config list Next iteratively recall each point from the sweep config list and store it to the new config list Then delete the config list generated by the sweep API Finally build a custom trigger model that uses the new config list PR50379 Customer trigger model is overwritten when restoring pre boxed sweep Models affected All 2450 Symptom Changes made to trigger models generated using the sweep API are not retained when saving the configuration Workaround Move all points in the config list generated using the sweep API to a new config list This can be accomplished by first creating a new config list Next iteratively recall each point from the sweep config list and store it to the new config list Then delete the config list generated by the sweep API Finally build a custom trigger model that uses the new config list PR50404 TSP Link does not reset properly on some units Models affected All 2450 Symptom TSP Link reset or initialization may consistently fail on certain units The unit being reset or initialized may ignore the reset or init
28. ive SourceMeter Instrument Reference Manual document number 2450 901 01 This manual is available online at http www keithley com support Search for 2450 Reference Manual when you get there 2 2450 850 FRP Rev E June 2015 Model 2450 Firmware Release Notes General Information Upgrade considerations for the Model 2450 ATTENTION Once the 2450 is upgraded to v1 2 0f the unit can NEVER be downgraded to an older firmware version Subsequent versions of firmware will be able to downgrade back to v1 2 0f but no earlier version Upgrade files are available on the Keithley Instruments website http www keithley com To find firmware files on the Keithley Instruments website 1 2 3 4 5 Select the Support tab In the model number box type 2450 Select Firmware Click the search button A list of available firmware updates and any available documentation for the instrument is displayed Click the file you want to download 2450 850 FRP Rev E June 2015 3 Version v1 3 0s Release Overview Model 2450 Firmware Release Notes Version v1 3 0s Release Overview Version 1 3 0s is the fourth official firmware upgrade release for the Model 2450 Known Issues Usage Notes and Upcoming Enhancements are listed below in this document Compatibility concerns Active Buffer Behavior Firmware revision v1 3 0s can be installed on any vintage 2450 Starting with v1 3 0s the behavior of the Acti
29. ld set status to 256 to help graph a family of curve traces on the graph 2450 850 FRP Rev E June 2015 11 Version v1 3 0s Release Noncritical Fixes Model 2450 Firmware Release Notes Noncritical Fixes PR50249 PR50426 Models affected All 2450 models Symptom GPIB The SRQ annunciator does not get lit for GPIB works ok for USB and VXI 11 Resolution This issue has been corrected Models affected All 2450 models Symptom Clearing Limit 2 will clear the Limit 1 annunciator on the display instead of the Limit 2 annunciator Resolution This issue has been corrected Known issues PR56487 Calling tsplink initialize under specific conditions can cause slave to lockup Models affected All 2450 models Symptom Attempting to initialize TSP Link using tsplink initialize may result in the following error being reported TSP Error 1202 Link initialization failed One or more of the slave instruments may lockup Workaround Workaround 1 gt One workaround is to only initialize the TSP Link connection once The link state can be checked by querying the tsplink state attribute If the link state is reported to be online then do not initialize the link again Workaround 2 gt Make sure that the controlling TSP node is NOT a 2450 12 2450 850 FRP Rev E June 2015 Model 2450 Firmware Release Notes Version v1 2 0f Release Version v1 2 0f Release Compatibili
30. ll Touch Test Invent Keithley Models including the 2450 2460 and 7510 have been carefully updated so that they are all consistent in look feel and general navigation 8 Updated Reading Table Added new reading table features and a new Reading Preview Graph Please see the Reference Manual for further details READING TABLE Buffer Buffer Index Reading Source A 0 mV 06 10 07 16 22 845109 0 009590 pA 001 9310 mV 06 10 07 16 23 515734 0 009564 pA 001 9228 mV 06 10 07 16 24 186322 0 009647 yA 001 9427 mV 06 10 07 16 24 856892 0 009639 yA 001 9420 mV 06 10 07 16 25 527470 0 009541 pA 001 9195 mV 06 10 07 16 26 198087 0 009517 yA 001 9151 mV 06 10 07 16 26 868617 0 009631 pA 001 9391 mV 06 10 07 16 27 539214 0 009617 yA 001 9381 mV 06 10 07 16 28 209799 0 009630 pA 001 9398 mV PR50885 Models affected AR39690 All 2450 models Enhancement Add a direct shortcut from the HOME view measurement line to the measurement settings menu A shortcut icon has been added to the swipe bar on the HOME source measurement tab defbuffer1 mem No Script eta 001 9386 mV T 200mv T 000 000mv META 105 000yA 2450 850 FRP Rev E June 2015 9 Version v1 3 0s Release Add a TRIGger LOAD command that takes a template name as a first argumentModel 2450 Firmwa PR51356 AR40325 PR53815 PR55190 AR42567 Models affected All 2450 models Enhancement Add a CLEAR or ENTER parameter to the W
31. mples These references will be removed in the next revision of the manual No substitute commands have been provided B Digital I O behavior a For digital I O lines changing the line mode to input will set the line state high b For digital I O lines changing the line mode to output will set the line state low c When configuring digital I O the output side of the line should be configured before the input side to avoid a false input trigger detection 32 2450 850 FRP Rev E June 2015 Model 2450 Firmware Release Notes Version v1 0 0i Release C Using the reset command a On page 3 125 in the Reference Manual the following NOTE is INCORRECT The command tsplink initialize DOES change the states of the individual nodes in the system NOTE Using the reset command in a TSP Link network differs from using the tsplink reset or tsplink initialize command The tsplink reset of tsplink initialize command reinitializes the TSP Link network but does not change the state of the individual nodes in the system D Resistance Mode Changes Auto Ohms vs Manual Ohms a Significant changes were made to the way resistance mode was documented in Revision A of the 2450 Reference Manual Below is a summary of differences in the Reference Manual vs the actual implementation The Reference Manual will be updated to reflect these changes in Revision B of the 2450 Reference Manual Sections affected are 2 91 6 4
32. n This issue has been corrected Models affected All 2450 models Symptom The LAN Reset button on the back of the 2450 failed to reset the system password Resolution This issue has been corrected and the system password is reset to the default admin Models affected All 2450 models Symptom Offset Compensation for SVMI ohms and Offset Compensation for SIVM ohms did not perform the offset measurement correctly Resolution This issue has been corrected 26 2450 850 FRP Rev E June 2015 Model 2450 Firmware Release Notes Version v1 1 0s Release PR50785 PR50786 PR50899 PR50903 Models affected All 2450 models Symptom On the Trigger Flow Screen the default Bit Pattern and Bit Mask show 255 Since there are only 6 trigger lines on the 2450 the maximum Bit Pattern should be no more than 63 Resolution This issue has been corrected The maximum value for Bit Pattern is now 63 The maximum value for Bit Mask remains 255 Models affected All 2450 models Symptom Digital I O Trigger blocks behavior functionality was not correct Resolution For Digital I O Trigger blocks as the mask setting changes any bits that are set to 1 will have the corresponding Digital I O line set to Digital I O Output Mode For bits set to 0 those corresponding Digital I O line modes remain unchanged Models affected All 2450 models Symptom The default value for Source Current Range display
33. n list before the measure This order ensures that dependencies between source and measure settings will be properly handled 2450 850 FRP Rev E June 2015 31 Version v1 0 0i Release Known issues Model 2450 Firmware Release Notes PR49885 PR49892 MANUAL Source delay is incorrect for default settings and resistance measure function SCPI SOURce 1 lt function gt DELay TSP smu source delay Models affected All 2450 Symptom In the 2450 Reference Manual the documentation for the command smu source delay claims the default setting is 001 This is NOT TRUE There is no default value for the command smu source delay and if queried without being set will return the last auto delay setting The manual also states If you turn auto delay back on the programmed source delay value is added to the auto delay time This is also incorrect Workaround Make sure to set an initial value for smu source delay The next version of the 2450 Reference Manual will be corrected Changes to the Reference Manual Models affected All 2450 Symptom A number of miscellaneous late changes were not added in time to Rev A revision of the 2450 Reference Manual Some of the key issues have been documented here A The following commands have been removed from the product SCPI SySTem BEEPer STATe TSP beeper enable These commands have been used in various places in the manual and in documented exa
34. nce with output off Because resistance measurements are dependent on the current or voltage source resistance measurements with the source off are meaningless and will be confusing to the user Resolution This issue has been corrected Once the output has been turned on off once the 2450 will display UNAVL unavailable in the upper right corner and the measurement fields will display dashes Models affected All 2450 models Symptom The graph shows voltage drop as current instead of current when sourcing current and then selecting source as the Y axis Resolution This issue has been corrected Models affected All 2450 models Symptom When certain sequences of SCPI commands using the TRIG LOAD LOOP command were sent the 2450 would throw a Fatal System Error requiring a 2450 power cycle to recover Resolution This issue has been corrected 18 2450 850 FRP Rev E June 2015 Model 2450 Firmware Release Notes Version v1 1 0s Release PR50750 AR39364 PR50860 AR39658 PR50998 AR39795 PR51005 AR39859 Models affected All 2450 models Symptom When setting up a source configuration list in some cases the source configuration list screen on the front panel GUI will show a source limit value of None if a config list point is selected Resolution This issue has been corrected Models affected All 2450 models Symptom When zooming in on the graph the magnitude of the dat
35. ord enter the Username and Password for that particular 2450 The default Username is admin and the default Password is admin 2450 850 FRP Rev E June 2015 21 Version v1 1 0s Release Model 2450 Firmware Release Notes Connect to 134 63 79 149 H The server 134 63 79 149 at unspecified domain requires a username and password Warning This server is requesting that your username and password be sent in an insecure manner basic authentication without a secure connection User name Ea admin i Password e C Remember my password An example of the 2450 Virtual Front Panel is shown below Users can use their mouse from a standard PC to control the instrument Users can also use touch screens from most touch screen devices that can access the 2450 IP address Keithley 2450 Virtual Front Panel Windows Internet Explorer je e 134 63 79 149 File Edit View Favorites Tools Help iy Favorites keithley 2450 Virtual Front Panel KEITHLEY po A Tektronix Company www keithley com Virtual Front Panel LXI Home config KEITHLEY 2450 SourceMeter OUTPUT REMOTE O A Toktronix Company LAN E defbuffer1 No Script 1588 O INTERLOCK E ie Virtual Front Panel Send Commands Extract Data SENSE HI FORCE HI A Help 210v sv 210v PEAK PEAK PEAK 250v SENSE LO FORCE LOD F TERMINALS FRONT REAR o GOOD 8 5 2 Screenis ACTIV
36. restore the following attributes Display digits Limit auto clear Math percent User delay 1 through 5 16 2450 850 FRP Rev E June 2015 Model 2450 Firmware Release Notes Version v1 2 0f Release If the filter is not enabled the following attributes are not restored Filter count Filter type If relative offset is not enabled the following attribute is not restored Relative offset value Resolution This issue has been corrected PR54651 Models affected All 2450 models Symptom Changing the measure range low setting used for auto range could result in incorrect operation if the range is higher than the active measure range Resolution This issue has been corrected Known issues N A 2450 850 FRP Rev E June 2015 17 Version v1 1 0s Release Overview Model 2450 Firmware Release Notes Version v1 1 0s Release Overview Version 1 1 0s is the second official firmware upgrade release for the Model 2450 Known Issues Usage Notes and Upcoming Enhancements are listed below in this document Compatibility concerns This version of firmware cannot be installed on newer 2450 systems Also once any system is updated to firmware revision v1 2 0f or later firmware version v1 0 0s can NEVER be installed again Critical Fixes PR50333 AR39747 PR50703 AR39206 PR50704 AR39257 Models affected All 2450 models Symptom 2450 should not measure resista
37. socket resources available is approximately 180 and after a socket is closed it will take 2 minutes to become available again MANUAL TSP Link mode command only supports open drain Models affected All 2450 Symptom In the 2450 Reference Manual the documentation erroneously states that the TSP command tsplink line N mode accepts the following parameters tsplink MODE_DIGITAL_IN tsplink MODE_DIGITAL_OU tsplink MODE_TRIGGER_IN tsplink MODE_TRIGGER_OU Workaround Do not use the parameters listed above in the command tsplink line N The next version of the 2450 Reference Manual will be corrected MANUAL The source sweep list function does not support smu DELAY_AUTO Models affected All 2450 Symptom In the 2450 Reference Manual the documentation incorrectly states that the source sweep list function supports the setting smu DELAY_AUTO Workaround Do not use the setting 1 for delay in the following command 2450 850 FRP Rev E June 2015 35 Version v1 0 0i Release Known issues Model 2450 Firmware Release Notes PR50228 PR50231 PR50350 SOURce 1 SWEep lt function gt LIST Do not use the setting smu DELAY AUTO in the following command smu source sweeplist The next version of the 2450 Reference Manual will be corrected The display screen command has been changed Models affected All 2450 Symptom The TSP attribute comman
38. ty concerns Firmware revision v1 2 0f can be installed on any vintage 2450 Critical Fixes AR40324 PR51382 AR40457 PR51440 PR51987 AR40488 AR40573 AR40575 PR51449 Models affected All 2450 models Symptom The limit values in trigger BLOCK_BRANCH_LIMIT_CONSTANT are saved incorrectly in the Create Config operation Under certain conditions limit values are saved as zero Resolution This issue has been corrected Models affected All 2450 models SCPI2400 mode only Symptom Source Memory Sweep does not work properly when Source Auto Clear is enabled Resolution This issue has been corrected Models affected All 2450 models Symptom Calibration date is set to 03 16 1996 after updating from v1 0 0i to v1 1 0s This is due to the fact that a new field was added between v1 0 0i and v1 1 0s and the new field was not initialized properly Resolution This issue has been corrected and Calibration Date will be set to the old Calibration Adjust Date if not already initialized 2450 850 FRP Rev E June 2015 13 Version v1 2 0f Release Critical Fixes Model 2450 Firmware Release Notes AR40579 PR51546 AR40591 PR51537 AR41514 PR52399 AR41552 PR52941 AR41757 PR53544 PR54481 Models affected All 2450 models Symptom Black bars appear across the bottom of the screen capture image Resolution This issue has been corrected Models affected All 2450 models Symptom
39. using Config List Models affected All 2450 models Symptom Under a very specific sequence of events setting the Source Config List source value to 1 0uA will revert to OUA after pressing the Trigger button on the front panel Resolution 2450 850 FRP Rev E June 2015 Model 2450 Firmware Release Notes Version v1 3 0s Release This issue has been corrected PR56135 QuickSet Performance Setting does not work on fastest setting AR50078 Models affected All 2450 models Symptom On the QuickSet Menu when editing the Performance Slide bar if you choose the fastest speed the dial indicates a speed of 1700 sec However the actual speed is only 10 sec no matter how much the other settings are optimized The only way to achieve this speed is to create a simple trigger model configuration that sources measures and loops back continuously then manually set NPLC to 01 turn auto ranging for source and measure off and set source delay to 0 Resolution This issue has been corrected and the Performance Slide bar works correctly for all settings 2450 850 FRP Rev E June 2015 7 Version v1 3 0s Release Enhancements Model 2450 Firmware Release Notes Enhancements GENERAL Models affected All 2450 models Enhancement A number of improvements have been made to the overall Graphical User Interface as follows 1 Screen Colors All screen colors have been modified for better contrast and easier readab
40. ve Buffer has changed Prior to v1 3 0s the Active Buffer was always defbuffer1 by default Now with v1 3 0s the Active Buffer will be the most recently created or selected buffer Additionally while graphing data when a user creates or selects a new buffer that data will automatically be graphed This feature can be disabled by manually selecting another trace and deleting if desired the active trace The user can also just select a different buffer Critical Fixes PR50999 AR39793 PR51112 AR39909 PR51359 AR40280 Need better indication when unit is in continuous trigger mode when set to 10PLC and 100 count repeat filter Models affected All 2450 models Symptom During some types of measurements the 2450 will appear to be stuck with no activity The solution is to add an animated indicator to show that measurements are still taking place and the 2450 is active Resolution This issue has been corrected There is now an active indicator for continuous readings even when the reading will be coming in very slowly the indicator displays that the test is still running USBTMC Error returned every other time status byte requested via USB Models affected All 2450 models Symptom This issue was discovered after writing a Status Byte routine in LabVIEW which enables the user to query the status byte in a loop Every other time STB was requested an error was returned Resolution This issue has been corrected
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