Model 2290-10 Power Supply User`s Manual
Contents
1. The TMOD command sets the trip reset mode The value n 0 sets manual trip reset while the value n 1 sets the trip reset mode to automatic VLIM n The VLIM command sets the value of the voltage limit to n where n is in volts The VLIM query returns the present limit setting As with front panel control the vLIM value must be greater than or equal to the VSET value or an execution error will occur Example VLIM 500 Set 500 V voltage limit Default value 10000 V VSET lt n gt The vSET command sets the voltage output level to n If rear panel control is enabled an error is returned The value n is in volts The VSET query returns the current VSET value As with front panel control the vsET value must be less than or equal to the VLIM value or an execution error will occur Example VSET 2500 Set output to 2 5 kV Default value 0 V Interface control commands RST The RST Reset common command resets the Model 2290 10 to its default configuration This command performs the same function as holding down the front panel CLR button at power on OPC The oPC command causes the operation complete bit in the status event register to be set when all previously started local overlapped commands are complete Note that each node independently sets its own operation complete bits in its own status model Any nodes that are not actively performing overlapp2. User s Manuals Includes information about optional accessories operation topics remote operation performance verification troubleshooting and application examples that you can use as starting point to create your own applications LabVIEW Driver and IVI Driver software Instrument drivers are used to communicate with an instrument and help to control it Section 1 Introduction Model 2290 10 10 kV Power Supply User s Manual Organization of manual Getting started Front and rear panel familiarization LED displays Safe connection Configuration and test setup Basic operations Set the voltage source set the voltage trip limit and set the current limit Remote operation Remote interfaces and commands Status messages Description of the Model 2290 10 status messages Errors Error numbers with descriptions Typical applications Detailed examples of how to use commands to accomplish certain test applications Performance verification Environmental conditions test equipment and verification procedures Troubleshooting Description of commonly encountered issues and information on how to resolve them Features The key features of the Model 2290 10 include e High voltage operation Source voltages up to a maximum of 10 kilovolts kV e 10 W power capability Source currents up to 1 milliamps mA at 10 kV e Ease of use Digital displays and the keypad simplify setting the voltage and current parameters e Progr
3. could result in personal injury or death Do not touch any exposed circuitry while the high voltage s enabled High voltage cables can store a charge even when disconnected from the unit Always turn off the high voltage and make sure all cables and circuitry are completely discharged before connect ng or disconnecting cables or other c rcuitry 2290 10 900 01 Rev A December 2013 Model 2290 10 10 kV Power Supply User s Manual Section 8 Performance verification DC voltage accuracy Use the following steps to measure the accuracy of the DC output voltage 1 With the power off connect the Model 2290 10 HIGH VOLTAGE output connector to the high voltage divider and connect the multimeter to the 1V output tap of the divider see next figure A WARNING Turn off high voltage and allow ample time for the voltage to discharge before changing any connections Also make sure that you connect the divider chassis to safety earth ground using 18 AWG or larger wire Figure 15 Model 2290 10 Connections for DC voltage accuracy tests 2000 Mulbimeter Volts Input High voltage cable 2 Turn on the power and set the Model 2290 10 to its default conditions Press RCL 0 and then ENTER 3 Select the multimeter DCV function and enable autoranging 4 With the high voltage turned off allow the multimeter reading to settle to OV and then enable the REL mode to null any residual offset voltage 5 Turn on t
4. POWER button Applies power to the instrument The instrument always powers up with the high voltage off The current instrument configuration and any saved instrument presets are stored in non volatile memory The serial number firmware version and model number are displayed when power is turned on If an error appears on power up the current instrument configuration and and any saved presets are lost and the default settings are used To restore the default settings hold down the clear button CLR while turning on the power Note that this will erase any saved parameters HIGH VOLTAGE enable switch This is a three position switch In the OFF RESET position the high voltage is off and all trips are cleared In this position the high voltage is locked off and cannot be turned on by computer control The ON position is a momentary contact position and turns on the high voltage for manual or rear panel analog control Note that the switch should be held in the ON position for at least a half second to turn the high voltage on In the middle position the high voltage is enabled and can be turned on by commands sent over a computer interface The ON LED above the switch indicates that the high voltage is on the TRIP LED indicates a trip has occurred VOLTS POSITIVE LED display Displays the output voltage Center LED display Displays the value of the parameter that is entered or adjusted including Error and status messag
5. command recalls stored configuration setting n where n ranges from 0 to 9 Setting 0 recalls the default settings If the stored setting is corrupted an error is returned Example RCL 0 Recall default setting SAV n The SAv Save command stores the present instrument setup as setting n where n ranges from 1 to 9 Example SAV 3 Save setting 3 ILIM lt n gt The ILIM command sets the value of the current limit to lt n gt where lt n gt is a floating point value in amperes The ILIM query returns the current limit setting Example ILIM 1E 6 Set 1 pA current limit Default value 1 05 pA ITRP lt n gt The ITRP command sets the value of the current trip to n where n is a floating point value in amperes The ITRP query returns the current trip setting Example ITRP 1E 6 Set 1 pA trip current Default value 1 05 pA 2290 10 900 01 Rev A December 2013 4 5 Section 4 Remote operation Model 2290 10 10 kV Power Supply User s Manual SMOD The SMOD query returns the VSET setting mode A returned value of 0 indicates that the voltage value is controlled by the front panel or bus setting while the value 1 indicates that the output is controlled by the rear panel SET MON voltage control input Note that the setting mode may only be changed by setting the rear panel VOLTAGE switch TCLR The TCLR command clears any voltage or current trips TMOD lt n gt
6. e Pin 1 5 V DC out current limited Figure 3 Model 2290 interlock connector wiring Test fixture with interlock Switch bli tee oceanic cs Pins3 2 1 The following figure shows how to connect the Model 2290 10 internal 10 V source in order to engage the external interlock or interlocks circuits Figure 4 Model 2290 10 Internal 10 kV source 2290 10 Pins Fixture interlock Other interlocks 2 3 2290 10 900 01 Rev A December 2013 2 3 Section 2 Safe configuration and test setup Model 2290 10 10 kV Power Supply User s Manual Connecting the Model 2290 10 output to a custom text fixture Keithley Instruments offers several accessories that can help you when building a custom test fixture or system You can use a high voltage SHV bulkhead connector Model 2290 10 SHVBH on your test fixture The following sections show you how to connect a Model 2290 10 to a custom fixture and also how to make connections to the device inside the custom fixture The next figure shows typical high voltage output connections Figure 5 Set up for testing a high voltage diode in a safe enclosure 2 4 2290 10 900 01 Rev A December 2013 Model 2290 10 10 kV Power Supply User s Manual Section 2 Safe configuration and test setu a CR NN 2 Model 2290 10 SHVBH high voltage male bulkhead connector Test fixture protective earth safety ground 4 Test fixture interlocked metal safety enclosure A safety en
7. 2290 10 900 01 Rev A December 2013 4 7 Section 4 Remote operation Model 2290 10 10 kV Power Supply User s Manual ESR lt n gt The ESR common query reads the value of the Standard Event Status Register If the parameter n is present the value of bit n is returned Reading this register without specifying n will clear the register but reading bit lt n gt will clear only bit n The range of n is 0 to 7 Example ESR 2 Request and clear bit 2 PSC n The Psc Power on Status Clear common command sets the value of the power on status clear bit If n 1 the power on status clear bit is set and all status registers and enable registers are cleared on power up If n 0 the bit is cleared and the status enable registers maintain their values at power down This feature allows the generation of a service request at power up Example PSC 1 Set power on status clear bit SRE n The SRE Service Request Enable common command sets the value of the Service Request Enable Register The parameter n is the decimal value representing the register bits to be set Example SRE 3 Set bits 0 and 1 STB lt n gt The STB Status Byte common query reads the value of the Status Byte Register If the parameter lt n gt is included the value of bit n is returned Reading this register has no effect on its value it only represents the summary of the oth
8. Voltage irip O I 8 up a ap LE E v ae m urret umi AA MAV Message Available 1 320 t Or ESB Event Summary Bit a O ME y y ME RC rt ors EN ne Na e Master Summary Status on High Voltage On TH 3 23 22 p am E ig Note ROS bit poll byt ote gt DIT i5 IN Serial po yyte 8 15 E a 3 1 73 MSS bit is in STB rosponeo Always Zero 5 ESR ESE ESE Section 5 Status messages Model 2290 10 10 kV Power Supply User s Manual Status byte register The next table summarizes bits in the Status Byte which may be read with the STB query or with the serial polling sequence The Model 2290 10 will generate a service request SRQ whenever one of these bits is set and the corresponding bit in the Service Request Enable Register is set except for bit 6 the RQS MSS bit Use the SRE command and the decimal bit value in the table to set Service Request Enable Register bits Note that any given status condition will produce only one SRQ even if that condition is never cleared Table Status byte Indicates that the VSET or ILIM value is stable The function depends on whether the Model 2290 10 is in current limit or constant voltage mode Indicates that a voltage trip has occurred Indicates that a current trip has occurred Indicates message available in the GPIB output queue Indicates that an unmasked bit in the Standard Event Status Register has been set Request for Service Master Summary Status Indicates tha
9. is plugged completely into the power entry module and that the front panel power switch is on Repeated trips Voltage Trips This problem may occur if the load changes too rapidly causing the voltage to overshoot Try raising the voltage limit Current Trips Disconnect the load and note if the unit still trips If the unit operates with no load the load may be causing the problem If the unit still trips with the load disconnected the unit may be damaged Contact the factory for further information Incorrect rear panel output voltage If the output voltage is not correct check the REAR LED and rear panel VOLTAGE Switch to verify the unit is in the SET mode Also check that the voltage limit is higher than the desired voltage Section 9 Troubleshooting Model 2290 10 10 kV Power Supply User s Manual Front panel test This test verifies that all segment drivers are functional Hold down the ENTER button while turning on the unit to run the front panel test After power is turned on one segment of one numerical digit should be on Press the up arrow button to step through all eight digit segments of the present digit and the following digit When the up arrow button is pressed again all segments and one of the single LEDs should be on Repeatedly press the up arrow button to cycle through all single LEDs The buttons can then be tested by pressing each button and observing the button code on the display The codes increase from
10. protection provided by the product warranty may be impaired The types of product users are Responsible body is the individual or group responsible for the use and maintenance of equipment for ensuring that the equipment is operated within its specifications and operating limits and for ensuring that operators are adequately trained Operators use the product for its intended function They must be trained in electrical safety procedures and proper use of the instrument They must be protected from electric shock and contact with hazardous live circuits Maintenance personnel perform routine procedures on the product to keep it operating properly for example setting the line voltage or replacing consumable materials Maintenance procedures are described in the user documentation The procedures explicitly state if the operator may perform them Otherwise they should be performed only by service personnel Service personnel are trained to work on live circuits perform safe installations and repair products Only properly trained service personnel may perform installation and service procedures Keithley Instruments products are designed for use with electrical signals that are measurement control and data I O connections with low transient overvoltages and must not be directly connected to mains voltage or to voltage sources with high transient overvoltages Measurement Category II as referenced in IEC 60664 connections require protectio
11. safety shield connected to safety earth ground using 18 AWG or larger wire Be sure to connect the 990 0 resistor to the low chassis side of the Model 2290 10 output Otherwise the multimeter will be floated 5 kV above earth ground which could result in instrument damage or risk of electric shock Figure 16 Model 2290 10 Connections for DC current accuracy tests Center Conductor Multimeter Safety Shield VOLTS INPUT Safety Earth Ground 2290 10 900 01 Rev A December 2013 Model 2290 10 10 kV Power Supply User s Manual Section 8 Performance verification 3 Turn on the power and recall the Model 2290 10 default conditions Press RCL 0 and then ENTER 4 Select the multimeter DCV function and enable autoranging 5 With the high voltage off allow the multimeter reading to settle and then enable REL to null any residual offset voltage 6 Setthe Model 2290 10 output voltage to 5000V and set the current limit to 1 uA Turn the high voltage on 7 Note the DMM reading and then calculate the current as follows V R where V is the multimeter voltage reading and R is the actual value of the 990 O resistor measured in step 1 8 Verify that the current computed in step 7 is within 5 pA of the programmed current limit value Also make sure that the front panel pA display reading is within 2 yA of the actual current value 9 Repeat steps 6 through 8 for the remaining currents listed in the
12. top to bottom and left to right After this test turn the power off and then back on to restart the instrument Power on reset If the instrument turns on with unusual combinations of LEDs on garbled displays or is unresponsive to the front panel buttons the memory contents may have been corrupted causing the instrument to lock up To remedy the situation turn the unit off and hold down the CLR button while turning the power back on Doing so causes the unit to initialize the memory and load the default setup No high voltage If the Model 2290 10 does not enable the high voltage check to make sure that the HIGH VOLTAGE LED is on If the HIGH VOLTAGE LED is OFF check the following 1 Make certain that you hold down the high voltage button for at least one half second This button requires a fairly long button press to avoid turning on the high voltage accidentally 2 Check the voltage limit and current trip levels to verify that they are sufficiently high for the expected output values If the HIGH VOLTAGE LED is ON but the output voltage is zero or lower than expected check the following 1 The LIMIT LED is on If so the current limit value could be too low or the load could be drawing excessive current 2 The voltage limit is as large as or larger than the desired output voltage 3 The REAR LED is on If so the high voltage is being programmed by the analog voltage applied to the SET MON input on the rear panel and not b
13. voltage applied to the analog input on the rear panel In this mode the high voltage cannot be programmed from the front panel and the center display will show the actual output voltage in the VOLTAGE SET mode If you want to set the output voltage remotely refer to the command VSET lt n gt voltage set To set the output voltage using the rear panel analog input refer to the Analog programming and monitor topic Set voltage limit 3 2 The voltage limit is a protection feature intended to prevent the output voltage from being set too high or from overshooting because of large load changes The output voltage cannot be set higher than the voltage limit In addition if the output voltage ever exceeds the programmed limit by more than 1096 of full scale the trip point is reached and the high voltage is disabled In this case a VTRP voltage trip message appears on the center display NOTE It is not necessary to clear the trip before turning the high voltage back on If it is necessary to change a parameter before turning the high voltage back on pressing CLR or placing the high voltage switch in the off position will clear the trip Set the voltage limit as follows 1 Press the SELECT button until the VOLTAGE LIMIT LED is lit The present value of the voltage limit is shown on the center display 2 Change the limit value using either the numeric or cursor buttons 3 Press ENTER to update the actual limit value NOTE
14. 10 INTERLOCK port The contacts for an external safety circuit intended to prevent personnel from contacting high voltage The interlock circuit must be engaged to allow the instrument to output high voltage Line cord The Model 2290 10 uses a detachable three wire power cord for connection to the power source and to a safety earth ground through a grounded AC outlet Only use the power cord that s provided with your instrument or an equivalent adequately rated power cord A WARNING The exposed metal parts of the instrument are connected to the outlet ground through the line cord to provide protection against electrical shock Always use an AC outlet that has a properly connected safety ground 1 6 2290 10 900 01 Rev A December 2013 Model 2290 10 10 kV Power Supply User s Manual Section 1 Introduction Connect to other instruments The rear panel SET and MONITOR BNC jack shields are connected to chassis ground and the AC power source ground using the power cord Do not apply any voltage to the shields The HIGH VOLTAGE SHV port is also connected to chassis ground and cannot be floated above ground A WARNING This unit contains hazardous voltages Be absolutely certain that the high voltage is completely discharged before removing or connecting the high voltage cable High voltage cables can store charge if they are disconnected from the supply while high voltage is turned on and can cause personal injury or dea
15. 8 ReiEro Setif a stored configuration setting is comupt 4 16 Execution Error Set by an out of range parameter or non completion of a command due to a condition such as an overload Set by a command syntax error or unrecognized command s ura Setbranybuton press Set by power on Note Set ESB bit in Status Byte Register by sending ESE command with desired condition For example ESE 16 sets ESB on execution error 2290 10 900 01 Rev A December 2013 5 3 Section 6 Errors In this section Error and Status messdges uus ita teer oper ini ia 6 1 Error and status messages Table Error messages The next table shows the error numbers that you will see on the center display These errors also set corresponding bits of the Standard Event Status Register Note that the CLR button clears any errors tombe Decio femmes OOOO OSES Power on memory error of the last setup Default setup is recalled Illegal Parameter Entered Parameter entered is out of range Stored Value Recall Error The stored setup from STO and RCL was lost Illegal Storage Address STO 0 is reserved for default settings No GPIB Interface GPIB interface not detected and the GPIB address cannot be set Err6 Syntax error over GPIB Invalid command Err6 indicates the command had an error in syntax or was unrecognizable A syntax error could be a misspelling of a command This error will set the Command Error bit bit 5 of the Standar
16. ECT button until the appropriate LED is lit for example the VOLTAGE LEDs SET or LIMIT While the value is changing the appropriate LED will flash indicating that the value in the center display is not the present unit setting If an incorrect value is entered press CLR clear to start over When the desired value is in the center display press the ENTER button to update the unit s actual setting and the LED will stop flashing Section 3 Basic operations Model 2290 10 10 kV Power Supply User s Manual Set output voltage To manually set the output voltage with the high voltage on or off refer to the Front panel familiarization graphic for more information 1 Press the SELECT button until the VOLTAGE SET LED is on The present voltage setting will appear on the center display 2 To change the voltage setting enter the desired voltage using either the numeric or cursor buttons 3 After the new value has been entered into the center display press ENTER to update the output voltage NOTE The VOLTAGE SET LED will flash until ENTER or CLR is pressed to remind you that the displayed value is not the actual programmed value If an Err2 message appears illegal parameter entered check the voltage limit to see that it is greater than or equal to the desired set voltage Use the CLR button to clear any error message see the Set voltage limit topic for more information If the REAR LED is on the high voltage is programmed from the
17. IAM ELE 2 2 Connecting the interlock of the Model 2290 10 ieri tnnt iota enu eese ina herent 2 3 Connecting the Model 2290 10 output to a custom text fixture seseeeees 2 4 cs run me 3 1 Nurnerc arid cursor KEYS crate eater roter iii esta I pane v e daa aran do dU aos 3 1 select Enters Gel sss iaces lia 3 1 Set OUIDUL VONAGS eer TU E EE 3 2 iejimelsApaccee UE 3 2 Set cuencia csi Ee EVE SEA PUE com UPS Mo PIE ene 3 3 i e UII mM 3 3 SIO and FECA zie ecetsex teta n Eod S ORE EpL Hinder ma FoU R i inen 3 4 Analog programming ond Momon tests 3 5 REMO operationerna at 4 1 Introduciendo a 4 1 RS 232 Cable MP EN 4 1 Connect GPIB cables to your Instr tTlerit srsiesnssns n esai a n a 4 1 Table of Contents Model 2290 10 10 kV Power Supply User s Manual Sethe GPIB address ise isa ti decis cb Ies da ab dado o dad tae 4 3 BUS CONMECIONS ii cil 4 3 Command Sy id lol do acond 4 3 Multiple commands isaac nido EOE iris 4 3 Command butler lt span ani 4 3 Command je 4 3 COMMAND lla 4 4 Remote commands sisi on 4 4 Output controllcommandss spaces os 4 4 Seting Control Command eec EUN 4 5 Interface control COMMANGS iuris 4 6 Status reporting commnarids ries itai poena reto der uu petras E ue ERE EE UI erate DEREN GEES 4 7 Status Messages cnica ic 5 1 Status POOOMING a rara ta ai 5 1 stats byte TRglstel anciano sadn 5 2 Standard event status
18. If an Err2 message appears illegal parameter entered check to see that the output voltage is less than or equal to the new desired voltage limit 2290 10 900 01 Rev A December 2013 Model 2290 10 10 kV Power Supply User s Manual Section 3 Basic operations Set current limit The power supply output current is clamped at the current limit If the current limit is reached the output voltage may not equal its programmed value When the unit is current limited the STATUS LIMIT LED is on Set the current limit as follows 1 Press the SELECT button until the uA LIMIT LED is on The present value of the current limit is shown on the center display 2 Change the limit value using either the numeric or cursor buttons 3 Press ENTER to update the actual limit value Set current trip The current trip shuts off the high voltage when the output current exceeds the trip value The current trip value is set in the same manner as the voltage and current limits After a current trip occurs the ITRP current trip message will appear on the middle display Current trips are cleared in the same fashion as voltage trips Set the current trip as follows 1 Press the SELECT button until the uA TRIP LED is on The present value of the current trip is displayed in the center window 2 Change the limit value using either the numeric or cursor buttons 3 Press ENTER to update the actual trip value 2290 10 900 01 Rev A December 2013 3 3 Se
19. Model 2290 10 10 kV power supply is designed for use in the research laboratory and for test applications It also has excellent regulation and low output voltage ripple The digital displays provide accurate readings of voltage and current and also provide for easy precise setting of output values using digital entry of current and voltage values Output voltage can be set from the front panel with a remote analog voltage or using the RS 232 interface or the IEEE 488 interface Voltage and current signals are also available for remote monitoring and analog control Extended warranty Additional years of warranty coverage are available on many products These valuable contracts protect you from unbudgeted service expenses and provide additional years of protection at a fraction of the price of a repair Extended warranties are available on new and existing products Contact your local Keithley Instruments representative for details Contact information If you have any questions after you review the information in this documentation please contact your local Keithley Instruments representative or call Keithley Instruments corporate headquarters toll free inside the U S and Canada only at 1 888 KEITHLEY 1 888 534 8453 or from outside the U S at 1 440 248 0400 For worldwide contact numbers visit the Keithley Instruments website http www keithley com CD ROM contents The Series 2290 Power Supply Product Information CD ROM contains
20. NC connections on the rear panel of the Model 2290 10 Both are O to 10 V outputs There is also a SET BNC connection that is used to receive analog programming voltage To select the rear SET analog high voltage control press SELECT on the front panel until the REAR LED is on then press ENTER The next two figures show examples of analog input and output connections A WARNING The BNC jack outer shells are connected to chass s ground and cannot be floated Figure 6 Model 2290 10 analog input control and voltage or current monitor connections Voltage or Current monitor N Voltmeter noncossacconanal 0 10 VDC 0 10 VDC DC voltage source 2290 10 900 01 Rev A December 2013 3 5 Section 3 Basic operations Model 2290 10 10 kV Power Supply User s Manual When the REAR LED is on the output voltage is controlled by the rear panel signal and displayed on the center display when in the VOLTAGE SET mode The voltage limit is still active and the unit does not allow the rear panel voltage to set the output value above the voltage limit Voltage Monitor Provides 0 to 10V for 0 to full scale output The next table lists voltage monitor examples Output voltage Analog monitor examples Voltage Set This BNC jack becomes an analog control input for the high voltage output An input of 0 V to 10 V will set the output voltage from 0 V to full scale The next table summarizes the analog input vol
21. TOTO aras aa 5 2 lli 6 1 Error and status Messages ji 6 1 lA a UT s RA S tL i Less 6 1 Table Summanzes status messages oit aci 6 2 Table Programmatic ero cuca 6 3 By eters ples osea 7 1 INFOdUCION TETTE A is AAA AA A AAA 7 1 Program example siii iii 7 1 Program example eR 7 4 Performance verlficatl h inicia coin spiis oa scs nie hada usan sse ainina Ri Rua asnan 8 1 Introductio siria A AAA AA AAA AAA tae 8 1 Environmental CODBITIOIS arista ont aaia E AED EE 8 1 Warmup Period aans L EEE 8 1 Recommended test Squl PME Escena te 8 2 Ventication procedures atadas audi 8 2 DEVoltage ACCURACY nnm 8 3 DC current aee ay tai idiota talados 8 4 Hiuucyyee 9 1 Sie dus e T 9 1 LNE DOW CR EU UU E M 9 1 Repeated MIDS as i etii qoia tede a aa aial 9 1 Incorrectrear panel output voltage t ARR CHARME RH AREE ME 9 1 enel 9 2 Powersomtesabl dio aa 9 2 Model 2290 10 10 kV Power Supply User s Manual Table of Contents No high voltage ansia EET 9 2 SON ICE Suri Tm 9 2 Section 1 Introduction In this section Weoo ES 1 1 Unpacking and InspectiDig s iocis eni oos osea ararnar anire 1 2 Optional accessories inicia 1 3 Frontpanel farmiliartZatiOri oc ots otiose Rotor renes cines 1 4 Rear panel familiartzallOn 1 iaeliee bene cha ERES MATIS cas baaleens 1 6 Welcome Thank you for choosing a Keithley Instruments product The
22. ammable voltage limit Voltage limit can be preset to ensure safe operation e Programmable current limits Current limit and trip point can be preset to prevent possible equipment damage e Monitor outputs Provide 0 10 V signals that can be used to monitor the high voltage output and current e External voltage control Allows the high voltage output value to be controlled with a 0 10 V input signal e Standard RS 232 and IEEE 488 interfaces Allow the instrument to be remotely controlled by a personal computer e Safety interlock Connections to an internal circuit that shuts down the high voltage output when an external circuit is opened The external circuit would typically include a limit switch on a test fixture door Unpacking and inspecting Inspect for damage Upon receiving the Model 2290 10 carefully unpack the unit and inspect for any obvious signs of physical damage that might have occurred during shipment Notify the shipping agent of any damage immediately 1 2 2290 10 900 01 Rev A December 2013 Model 2290 10 10 kV Power Supply User s Manual Section 1 Introduction Shipment contents The following items are included with every Model 2290 10 order e Model 2290 10 high voltage supply e Model 2290 10 product information CD ROM e AC line power cord e Model 2290 10 additional accessories as ordered e 3 pin mating interlock connector Optional accessories The following optional accessor
23. c shock This unit should be used only by qualified personnel who recognize the dangers of high voltages Make certain that the source is turned off and that high voltage is completely discharged before removing the high voltage cable High voltage cables can store charge if they are disconnected from the supply while the high voltage is on The charge on the cable can cause injury or damage even after the cable is disconnected from the unit The Model 2290 10 is provided with an interlock circuit that must be positively activated in order for the high voltage output to be enabled The interlock helps facilitate safe operation of the equipment in a test system Bypassing the interlock could expose the operator to hazardous voltages that could result in personal injury or death Section 2 Safe configuration and test setup Model 2290 10 10 kV Power Supply User s Manual Safely connect to instruments Line voltage selection The Model 2290 10 auto detects the input voltage and the input frequency It operates from a 100 V AC to 240 V AC power source that has a line frequency between 50 Hz and 60 Hz Power consumption is less than 80 Watts total The AC power connection on the rear panel provides the connection to the detachable power cord and to a protective ground Make sure that you always use an outlet that has a protective ground There are three versions of the Model 2290 10 to allow operation from a 100 120 220 or 240 V nominal AC pow
24. cessories as defined in the specifications and operating information and as shown on the instrument or test fixture panels or switching card When fuses are used in a product replace with the same type and rating for continued protection against fire hazard Chassis connections must only be used as shield connections for measuring circuits NOT as protective earth safety ground connections If you are using a test fixture keep the lid closed while power is applied to the device under test Safe operation requires the use of a lid interlock Ifa screw is present connect it to protective earth safety ground using the wire recommended in the user documentation The A symbol on an instrument means caution risk of danger The user must refer to the operating instructions located in the user documentation in all cases where the symbol is marked on the instrument The A symbol on an instrument means caution risk of electric shock Use standard safety precautions to avoid personal contact with these voltages The A symbol on an instrument shows that the surface may be hot Avoid personal contact to prevent burns The 7 7 symbol indicates a connection terminal to the equipment frame If this symbol is on a product it indicates that mercury is present in the display lamp Please note that the lamp must be properly disposed of according to federal state and local laws The WARNING heading in the user documentation explains dangers
25. closure with an interlock that has a normally open NO switch s TesiwueidmmWokswkhconedon SSCS A WARNING f you need to convert from safe high voltage SHV to another connector type be sure to only adapt SHV connectors to connectors that are rated to the maximum possible voltage in your test setup If you use adapters that are not rated to the maximum possible voltage in your test setup electric shock may result 2290 10 900 01 Rev A December 2013 2 5 Section 3 Basic operations In this section NUMERIC and cursores ct iia 3 1 Select Enter Clasista 3 1 Set output vollage err ei rre a 3 2 Set Voltage LIM RN TT 3 2 O 3 3 A woe tise tee ated tasted 3 3 Store ANG SCA lags en crcala ibas 3 4 Analog programming and monitor eeeeee 3 5 Numeric and cursor keys All parameters are adjusted using the cursor or numeric keys When using the cursors the adjusted digit being adjusted in the center display will flash When using direct numerical entry press the number and decimal point buttons until the desired value appears on the center display Note that the current is specified in yA The cursor buttons are used to adjust parameters e Up arrow increments the digit e Down arrow decrements the digit e Left arrow cursor selects and moves the digit to the left e Right arrow cursor selects and moves the digit to the right Select Enter Clear To adjust a value press the SEL
26. computer should never require cleaning if handled according to instructions If the board becomes contaminated and operation is affected the board should be returned to the factory for proper cleaning servicing Safety precaution revision as of January 2013 Table of Contents q AA E E En 1 1 W SICON Gk EE E D EE 1 1 Extended Wartanity AC 1 1 Contact inonma esas lenin ile tl bet lll oe leo tr do 1 1 CD ROM contents acido 1 1 Organization ot mantidllvicins pianista ida apace anaes 1 2 cs m EE 1 2 Uripacking sind Inspecllligss cedo ie vob eb perd env bd a P parade a ia EORR Vea A EL UTR DR 1 2 Inspect for CAMAGE e 1 2 Snipmentcontents cascara oros airoso ave 1 3 Optional aCcceSSDIIBS a 1 3 Connecting cables and CONNECTIONS xeisscccscseccicssse sesasccnstenidad cio iii 1 3 sack poU KIS a cs ects ted es lic dla ot di li lei itii dea Lon oad 1 3 Protection module e e 1 3 Front panel familiarizarse ii bid 1 4 Rear panel familan zaton cada ota 1 6 o m C 1 6 Connect to other InstF TTiellls eie iii da Sale Eius 1 7 Safe configuration and test setup eeeseeeeeeeeeeeeeeeeeeeeennnnen nnne 2 1 INTOdUCIO ERE EOD UL Tr E 2 1 High voltage safety precautions ec iii e CLIP Led TE VLL A TAa ea 2 1 Safely connect to IHSIFUTTTOEIDS dadas 2 2 Line voltage seleciona Et 2 2 Laia ts 0 o onde A aHa Matit dd Ed i MIA LM e
27. ction 3 Basic operations Model 2290 10 10 kV Power Supply User s Manual Store and recall 3 4 STO store and RCL recall allow up to nine complete instrument setups to be saved in nonvolatile memory and later recalled To store a setup 1 Program the various instrument operating modes to be stored 2 Press the STO button 3 Press a number 1 9 to select the desired storage location 4 Press the ENTER button to complete the storage process To recall a setup 1 Press the RCL button 2 Press the number button 0 9 for the configuration to be recalled RCL O returns the instrument to the factory default setup 3 Press the ENTER button NOTE Whenever a setup is recalled the high voltage is turned off for safety If an Err3 recall error occurs the stored setup was lost due to a memory error and must be stored again using the STO button The factory default setup can be recalled by pressing the CLR button while turning on the power or by recalling setup O RCL 0 The default setup is also recalled after a power on memory error Err 1 The next table lists the factory default setup Mode Default setting Output voltage 0 V Voltage limit 10000 V 1050 yA 1050 yA Reset mode MAN High voltage OFF GPIB address 14 2290 10 900 01 Rev A December 2013 Model 2290 10 10 kV Power Supply User s Manual Section 3 Basic operations Analog programming and monitor There are two MONITOR output B
28. d Event Status Register Err7 Illegal parameter sent over Parameter programmed is out of range Err7 indicates a GPIB parameter was set out of range or a command could not be completed because of an overload This error will set the Execution Error bit bit 4 of the Standard Event Status Register Err8 GPIB Output queue full Output buffer overflowed Err8 indicates the output queue overflowed and was cleared This error could be caused by querying the unit repeatedly and not reading out all of the characters or by a problem at the GPIB controller the unit that s requesting and receiving the data This error will set the Query Error bit bit 2 of the Standard Event Status Register Section 6 Errors Model 2290 10 10 kV Power Supply User s Manual Table Summarizes status messages The next table summarizes the status messages Note that the message indicated in the next table is seen on the center display VTRP Voltage trip voltage limit exceeded ITRP Current trip current limit exceeded PTRP Primary trip power transformer primary current limit exceeded 6 2 2290 10 900 01 Rev A December 2013 Model 2290 10 10 kV Power Supply User s Manual Section 6 Errors Table Programmatic errors Note that the error numbers in the next table are not available on the center display and are only available using the LERR last error query This query returns the error number of the last remote interface error This i
29. e reverse biased that is the cathode should be connected to the HI output terminal of the Model 2290 10 Figure 11 Model 2290 10 reverse biased diode bo NNNM EN Model 2290 10 SHV high voltage cable 2 Model 2290 10 SHVBH high voltage male bulkhead connector Test fixture protective earth safely ground O O o o oS S 4 Interlocked metal safety enclosure A safety enclosure with an interlock that has a normally open NO switch s Tesfmremetekswihcomedon SSCS 7 2 2290 10 900 01 Rev A December 2013 Model 2290 10 10 kV Power Supply User s Manual Section 7 Typical applications Example program code The following code was created and tested using the Python programming language using the pyVISA module To learn more about Python go to www python org NOTE The example python program code below can be copied and pasted for your testing purposes however the code must match to include the indents of specific lines Import pyVisa module into the Python environment import visa import time Open a VISA session with the 2290 at GPIB address 14 ki2290 visa instrument GPIB 14 Reset and clear the status of the 2290 ek 2 2 90 vinea tec ARS ap V 153L2 2 9 wete CL Su RIZZO meters Pise QW Define sweep variables for the programmed output voltage and measured current readings voltage 0 currReading currRdgList IET Turn on the output of the 2290 time sleep 1 ki2290 w
30. ed commands set the bits immediately All remaining nodes set their own bits as they complete their own overlapped commands 2290 10 900 01 Rev A December 2013 Model 2290 10 10 kV Power Supply User s Manual Section 4 Remote operation LERR The LERR query returns the error code of the last remote interface error see the Table Programmatic errors for more information Example IDN LERR 113 IDN The IDN Identification common query returns the Model 2290 10 device configuration The response string is in the format KEITHLEY INSTRUMENTS INC MODEL 2290 10 lt serial_number gt lt version_number gt Where 2290 10 is the model number serial_number is the serial number of the particular unit version_number is the 3 digit firmware version level WAI The WAI common command is a synchronization command that halts further command processing until all present commands are complete For example the commands WAI and HVON will wait until the operation is complete and turn the high voltage back on Status reporting commands The following commands control various status reporting aspects CLS The CLS Clear Status common command clears all status registers ESE lt n gt The ESE common command sets the Standard Event Status Enable Register The parameter lt n gt is the decimal value that programs the enable register Example ESE 12 Set bits 2 and 3
31. ed for use through a normally open switch which may be installed on the lid of a test fixture on the enclosure of a semiconductor prober or device handler or on the door or doors of a test equipment rack In the next example the reverse bias sweep across the diode is performed like program example 1 However the Model 263xB System SourceMeter is used to obtain more accurate leakage current measurements on the diode This example may also be easily applied to measuring the drain leakage current of a MOSFET or collector leakage current of a BJT or IGBT Equipment Needed e 1 high voltage diode enclosed in a safe test fixture e 1 Model 2290 10 high voltage power supply e 2 GPIB cables to connect the Model 2290 10 and the Model 263xB to a computer with a GPIB interface e 2 Model 2290 10 SHV cables e 2 Model 2290 10 SHVBH bulkhead connectors e 1 Model 2290 PM 200 protection module e 2Model7078 TRX cables to connect the Model 263xB to the protection module Device connections of a high voltage diode test with a Model 2290 10 high voltage supply protection module and SourceMeter The next figure is a simple circuit schematic of the test performed in this example 7 4 2290 10 900 01 Rev A December 2013 Model 2290 10 10 kV Power Supply User s Manual Section 7 Typical applications Figure 13 Model 2290 10 reverse biased diode connections with SourceMeter 1 See the Interlock connections figure for more detail the next
32. er source with a line frequency of 50 or 60 Hz Before connecting the power cord to a power source verify that the line voltage selector card located in the rear panel fuse holder is set for the correct AC line voltage A CAUTION This instrument may be damaged if operated with the line voltage selector set for the wrong AC line voltage or if the wrong fuse is installed Interlock circuit An interlock circuit is provided on the rear panel of the instrument This circuit must be closed to enable the Model 2290 10 to produce output voltages When the safety interlock signal is enabled the power supply is enable to output up to 10 kV However when the safety interlock signal is not enabled the output voltage is turned off A WARNING The Model 2290 10 is provided with an interlock circuit that must be positively activated in order for the high voltage output to be enabled The interlock helps facilitate safe operation of the equipment n a test system Bypassing the interlock could expose the operator to hazardous voltages that could result in personal injury or death 2 2 2290 10 900 01 Rev A December 2013 Model 2290 10 10 kV Power Supply User s Manual Section 2 Safe configuration and test setup Connecting the interlock of the Model 2290 10 The interlock pins control the high voltage supply The pin locations and connections are shown in the following figure The pins are e Pin 3 Chassis ground e Pin 2 Interlock enable
33. er status registers The range of lt n gt is 0 to 7 Example STB 1 Request bit 1 status 2290 10 900 01 Rev A December 2013 Section 5 Status messages In this section E OA 5 1 Status reporting The Model 2290 10 reports on its status with two registers the Status Byte Register and the Standard Event Status Register The overall configuration of these registers is shown in the next figure Note that bits O 1 and 8 through 15 of both the Standard Event Status Register and Standard Event Status Enable Register are not used in the Model 2290 10 and are always set to zero On power up the 2290 10 will either clear all of its status enable registers or maintain them in the state they were in during power down The action taken is controlled by the PSC command and allows events such as SRQ on power up to be generated if desired Figure 10 Model 2290 10 Status model Output Queue Status Service Request Byte Enable Register Standard 7 tel r NK Standard Event LV trip 7 V trip_ Event Status EMH Ot trip Stat Enable llim Y tim _ Logical Status Ena 4 Register Register ia HO A OR ave 7ero L_0_ F O d 0 O Zero nem E e y TE Query Error O O A Recall Error RCL 6 amp c 3 Execution Error EXE 8 1 tx 3 Command Error CME 09 cw 3 User Request 9 1 URQ 3 Logical jo Volga VEMM Stable Power On PON 0 7 PoN 3 OR trip
34. eried have no question mark Brackets indicate the parameter is optional An asterisk preceding the command indicates IEEE 488 2 common commands NOTE Parentheses shown in command descriptions indicate only that a query form is available Do not include parentheses in commands Output control commands HVOF The HvoF command turns off the high voltage output HVON The HVON command turns on the high voltage provided that the front panel HIGH VOLTAGE switch is not in the OFF position If the switch is in the OFF position the high voltage is left off and an execution error is reported This command also automatically clears any voltage or current trips IOUT The IOUT query returns the value of the actual output current This value is the same as that shown on the front panel pA display NOTE As with the front panel display this value takes about one second to stabilize after a change in current 4 4 2290 10 900 01 Rev A December 2013 Model 2290 10 10 kV Power Supply User s Manual Section 4 Remote operation VOUT The vouT query returns the actual output voltage This value is the same as that shown on the front panel VOLTS display The value returned is a floating point number and includes the sign of the output voltage NOTE As with the front panel voltage display this value takes about one second to stabilize after a change in voltage Setting control commands RCL n The RCL Recall
35. es that my occur HA LED display Displays the output current SELECT ENTER CLR Clear button The SELECT button is used to choose which parameter is being displayed in the center display The ENTER button enters the parameter shown in the center display The CLR clear button erases the value in the center display and recalls the last value that was entered Numeric and cursor buttons All parameters are adjusted using the cursor or numeric buttons STATUS indicators Three LEDs indicate the instrument s status The LIMIT LED is on when the unit is in current limit The REM LED is on when the unit is in remote and the front panel is locked out The REAR LED is on when the high voltage is controlled by the analog input RESET button Reset mode determines how the instrument responds after a voltage or current trip There are two modes MAN and AUTO In MAN manual mode the high voltage remains off after a trip and requires that the operator manually turn it back on In AUTO automatic mode the unit waits until the output voltage has fallen to 296 of its full scale value and then turns the high voltage back on This feature is useful when dealing with loads that occasionally short circuit but recover after high voltage has been removed GPIB button The GPIB address button sets the GPIB primary address LOCAL button The LOCAL button takes the instrument out of remote and restores operation of othe
36. ffered in a 128 character output queue If the buffer overflows then all of the data in the both the input buffer and output queue are discarded and an error is reported in the standard event status byte Command queries The present value of a particular parameter may be determined by querying the Model 2290 10 for its value A query is formed by appending a question mark to the command and omitting the desired parameter from the command If multiple queries are sent on one command line separated by semicolons responses will be returned in a single line with the individual responses separated by semicolons The default response terminator is a linefeed lt LF gt plus EOI All commands return integer results except as noted in individual command descriptions 2290 10 900 01 Rev A December 2013 4 3 Section 4 Remote operation Model 2290 10 10 kV Power Supply User s Manual Command examples VSET 1 0E3 Sets the voltage to 1000 V VSET Queries the voltage setting Queries the device identification VSET 100 0 VSET Sets the voltage to 100 V and queries the voltage Remote commands The following Model 2290 10 commands are divided by the type of command Output control Setting control Interface control and Status reporting Note that multiple parameters are separated by commas Commands with queries are followed by a question mark in parentheses Commands that have only a query include a Commands that cannot be qu
37. figure 2290 10 900 01 Rev A December 2013 7 5 Section 7 Typical applications Model 2290 10 10 kV Power Supply User s Manual The next figures detail how these connections should be made in a safe test enclosure Figure 14 Model 2290 10 reverse biased diode interlock connections Pin 22 10V 263xB Pin 24 INTLK Pin 19 GND Test fixture lid interlock Pin 1 10V 2290 10 Pin 2 INTLK Pin 3 GND np 1 Model 2290 10 SHV high voltage cable e 2290 10 SHVBH high voltage male bulkhead connector 5 restar protective este gone ELTE ee ee metal safety enclosure A safety enclosure with an interlock that has a normally open NO switch E fixture interlock switch connections For 2290 10 connect pin 2 interlock and pin 3 ground and 263xB connect pin 22 5 V DC out pin 24 interlock pin 19 ground Model 2290 PM 200 high voltage SMU Protection Module 7 Model 7078 TRX cables Connect the Protection Module to the Model 263xB SMU 7 6 2290 10 900 01 Rev A December 2013 Model 2290 10 10 kV Power Supply User s Manual Section 7 Typical applications Example program code The following code was created and tested using the Python programming language using the pyVISA module To learn more about Python go to www python org NOTE The example python program code below can be copied and pasted for your testing purposes however the code must match to include the indent
38. he Model 2290 10 high voltage output Set the Model 2290 10 output voltage to each value as indicated in the DC voltage accuracy summary table and verify that the reading parameters are within stated limits For each setting e Set the output voltage as indicated in the table e Wait for the output to settle about one minute e Make sure that the Model 2290 10 VOLTS display reading is within stated limits e Verify that the multimeter reading is within required limits 6 Turn off the high voltage and allow the voltage to discharge 2290 10 900 01 Rev A December 2013 8 3 Section 8 Performance verification Model 2290 10 10 kV Power Supply User s Manual Table DC voltage accuracy Output voltage Voltage display limits Multimeter reading limits volts 440 506 0 1000 1008 994 0 1006 0 DC current accuracy The DC current accuracy test measures the accuracy of the output current limit and the pA current display 1 Using the ohms function of the multimeter measure and record the value of the 990 O resistor 2 With the power off connect the 990 O resistor the 1 MO load resistor and the multimeter to the Model 2290 10 HIGH VOLTAGE output connector as shown in the next figure Note that the multimeter is connected across the 990 Q resistor A WARNING Turn off high voltage and allow ample time for the voltage to discharge before changing any connections For safety purposes the resistors must be mounted within a
39. ies are available for use with the Model 2290 10 Connecting cables and connectors e Model 2290 10 SHVUC 10 kV SHV male to unterminated cable 3 05 meters 10 feet e Model 2290 10 SHV 10 kV SHV male to SHV male cable 3 05 meters 10 feet e Model 2290 INT CABLE 3 pin interlock connector to unterminated cable 3 05 meters 10 feet e Model 2290 10 SHVBH 10 kV SHV female bulkhead connector Rack mount kits e Model 2290 10 RMK 2 double rack mount kit mounts two power supplies side by side e Model 2290 10 RMK 1 single rack mount kit mounts a single power supply e Model 4299 7 shelf rack mount kit mounts one or two power supplies Protection module Model 2290 PM 200 The protection module is intended for use in applications where a device breakdown or other potential failure could connect the high voltage output of the Model 2290 5 or Model 2290 10 High Voltage Power Supply to a lower voltage source measure unit SMU 2290 10 900 01 Rev A December 2013 1 3 Section 1 Introduction Model 2290 10 10 kV Power Supply User s Manual Front panel familiarization The Model 2290 10 front panel is shown below Descriptions of the controls on the front panel follow the figure Figure 1 Model 2290 10 Front panel KELI FILE REAR SET UMT LIMIT TRIP IL VOLTAGE V STATU UMIT REM 1 4 2290 10 900 01 Rev A December 2013 Model 2290 10 10 kV Power Supply User s Manual Section 1 Introduction
40. ime sleep 1 Allow measurement to be taken 2290 10 900 01 Rev A December 2013 7 7 Section 7 Typical applications Model 2290 10 10 kV Power Supply User s Manual currRdgList append currReading voltage voltage 300 Set the voltage of the 2290 to OV and turn off its output ki2290 write VSET 0 ki2290 write HVOF Turn off the output of the Model 263xB ki263x write smua source output smua OUTPUT OFF Print the current measurements print Current Measurements currRdgList 7 8 2290 10 900 01 Rev A December 2013 Section 8 Performance verification In this section nisu sio eM E 8 1 Environmental Conditions s n ocio tri neee iria 8 1 Warrns p pertod sosna nn teer Eee Pee dedi eter a e eer RUUE 8 1 Recommended test equipment eene tenes 8 2 Venfcation proced rES qr 8 2 Introduction This section contains procedures to verify that the Model 2290 10 meets or exceeds its stated performance specifications for DC voltage accuracy DC current accuracy load regulation and output voltage ripple These procedures do not adjust your instrument If your instrument fails any of the performance verification tests you should contact Keithley Instruments service A WARNING The procedures in this section are intended to be used by qualified service personnel only Many of these procedures may expose you to hazardous voltages that could result in personal injury or death Do not
41. ment stack the connectors Each connector has two screws to ensure that connections remain secure The figure below shows a typical connection diagram for a test system with multiple instrument A CAUTION To avoid possible mechanical damage stack no more than three connectors on any one instrument To minimize interference caused by electromagnetic radiation use only shielded GPIB cables Contact Keithley Instruments for shielded cables Figure 8 Model 2290 10 GPIB example connections Instrument Instrument 2290 c v gj af A J Computer tf To connect the instrument to the GPIB 1 Align the cable connector with the port on the rear panel The location of the port is shown in the following figure 2 Attach the connector Tighten the screws securely but do not overtighten them Figure 9 Model 2290 10 rear panel GPIB location rcr GPIB 3 Connect any additional connectors from other instruments as required for your application 4 Ensure the other end of the cable is properly connected to the controller 4 2 2290 10 900 01 Rev A December 2013 Model 2290 10 10 kV Power Supply User s Manual Section 4 Remote operation Set the GPIB address The default GPIB address is 14 Before attempting to communicate with the Model 2290 10 over the IEEE 488 interface make sure the instrument s primary address is set correctly To enter the GPIB address press the GPIB button and then increment or decremen
42. n for high transient overvoltages often associated with local AC mains connections Certain Keithley measuring instruments may be connected to mains These instruments will be marked as category II or higher Unless explicitly allowed in the specifications operating manual and instrument labels do not connect any instrument to mains Exercise extreme caution when a shock hazard is present Lethal voltage may be present on cable connector jacks or test fixtures The American National Standards Institute ANSI states that a shock hazard exists when voltage levels greater than 30 V RMS 42 4 V peak or 60 VDC are present A good safety practice is to expect that hazardous voltage is present in any unknown circuit before measuring Operators of this product must be protected from electric shock at all times The responsible body must ensure that operators are prevented access and or insulated from every connection point In some cases connections must be exposed to potential human contact Product operators in these circumstances must be trained to protect themselves from the risk of electric shock If the circuit is capable of operating at or above 1000 V no conductive part of the circuit may be exposed Do not connect switching cards directly to unlimited power circuits They are intended to be used with impedance limited sources NEVER connect switching cards directly to AC mains When connecting sources to switching cards install protective device
43. next table For each value e Program the current limit to the correct value e Measure and record the multimeter voltage reading e Compute the current from the voltage and resistance e Verify the computed and display current values are within required limits 10 Turn off the high voltage and allow the voltage to discharge Table DC current accuracy summary Current limit Multimeter voltage Calculated current Allowable current range setting Lower limit Upper limit pA 95 pa 295 pA 395 uA 495 uA 505 uA 695 pa 795 uA 895 uA 995 Voltage across 990 Q resistor measured by multimeter Calculated as follows V R where V multimeter voltage reading and R measured resistor value 3Limits calculated as follows 5 pA where calculated current 2290 10 900 01 Rev A December 2013 8 5 Section 9 Troubleshooting In this section A O D D cea 9 1 age 9 1 Repeated tS srci nin a aeae a 9 1 Incorrect rear panel output voltage c e 9 1 o eset eode teret des tec aa a eios lici 9 2 P weron Ir UO 9 2 No IGM Ole eren P T 9 2 iio e i 9 2 Stuck buttons If the center display is filled with a number such as 4444 or one particular message such as Err2 and the front panel buttons are unresponsive check to see if a button is stuck If so gently tap the stuck button back to the center of its hole to free it Line power Verify that the line cord
44. perform these procedures unless you are qualified to do so Use extreme caution when working with hazardous voltages Environmental conditions All verification procedures should be performed at an ambient temperature of 18 C to 28 C and at a relative humidity of 70 or less unless otherwise noted Warm up period The Model 2290 10 should be turned on and allowed to warm up for at least one hour before performing the verification procedures The test equipment should also be allowed to warm up for the time period recommended by the manufacturer Section 8 Performance verification Model 2290 10 10 kV Power Supply User s Manua Recommended test equipment The next table summarizes the recommended test equipment for the verification procedures Table Recommended verification test equipment Equipment Specifications Manufacturer and model High voltage divider 0 01 DC accuracy Ohm Labs Inc formerly Julie Research KV 10 01 or KV 10R Multimeter 0 002 DC accuracy 10 GQ DC input impedance Keithley Model 2000 990 Q load resistor Any appropriate resistor manufacturer 1 MA load resistor 10 kV 25 W Verification procedures The verification procedures are explained in detail in the following paragraphs Refer to the Recommended test equipment table and the respective diagrams for test equipment and connections A WARNING The following procedures use high voltage Use extreme care to avoid electrical shock that
45. r front panel controls STO and RCL buttons STO store and RCL recall allow up to nine complete instrument settings to be saved in nonvolatile memory RCL 0 recalls the default settings 2290 10 900 01 Rev A December 2013 1 5 Section 1 Introduction Model 2290 10 10 kV Power Supply User s Manual Rear panel familiarization The Model 2290 10 rear panel is shown below Descriptions of the controls on the rear panel follow the figure Figure 2 Model 2290 10 rear panel AC POWER 100 to 240 VAC 50 to 60 Hz KEITHLEY POWER lt 80 WATTS A Tektronix Company MADE IN U S A MONITOR CURRENT VOLTAGE Serial Number 50006 Ne INTERLOCK Power entry The power entry module contains the line fuse and the line voltage selection Refer to the Safely connect to instruments topic for instructions on selecting the correct line voltage and fuse HIGH VOLTAGE output The HIGH VOLTAGE output port is an SHV female port that connects the port Model 2290 10 source output to external equipment SHV to SHV and SHV to MHV mated high voltage cables are available Analog I O The SET BNC jack is an input connection for analog control of the high voltage output The MONITOR BNC jacks provide voltage and current monitor signals GPIB The 24 pin IEEE 488 STANDARD PORT GPIB allows computer control of the Model 2290 10 RS 232 The RS 232 serial port allows computer control of the Model 2290
46. rite HVON Perform a sweep from 0 to 3000V and make current measurements at each point of the sweep tor a im weiner 0 11 e ki2290 write VSET str voltage time sleep 2 Allow new voltage level to stabilize currReading ki2290 ask IOUT currRdgList append currReading voltage voltage 300 Set the output voltage of the 2290 to OV and turn off its output SAO ESE 9 ki2290 write HVOF Print the current measurements print Current Measurements currRdgList 2290 10 900 01 Rev A December 2013 7 3 Section 7 Typical applications Model 2290 10 10 kV Power Supply User s Manual Program example 2 Linear voltage sweep with Model 2990 10 and current measurements with Model 263xB The next figure shows how to connect the interlock circuits of the Model 2290 10 and the Keithley Model 263xB SourceMeter instrument with the normally open switch on the text fixture Figure 12 Interfacing the interlock circuits of the Model 2290 10 and the Model 263xB SourceMeter instrument to the test fixture 2290 10 263xB 1 OO mp c V ai IQ jm Fixture interlock Other interlocks 24 Interlock 3 a r 19 Ground The output of the Model 2290 10 can only be turned on when the interlock is engaged The interlock is engaged when the interlock pin is pulled high through a switch to more than 3 V The interlock is disengaged when the signal applied is less than 1 2 V The interlock is intend
47. s a list of possible error numbers and descriptions see the LERR for more information Error number Description Missing parameter parser l Watchdog device dependent 2290 10 900 01 Rev A December 2013 6 3 Section 7 Typical applications In this section WVBR CEI Ue DO oos bi Er cas ca vere te nre det aa 7 1 Introduction This section is broken into two examples Example 1 demonstrates how to generate a basic linear voltage sweep with the Model 2290 10 to reverse bias a high voltage diode and make leakage current measurements at each point of the sweep Example 2 demonstrates basic interaction of the Model 2290 10 high voltage power supply with a Model 263xB System SourceMeter The Model 2290 10 is used to generate a basic linear voltage sweep across the diode and the Model 263xB is used to make a leakage current measurement on the diode Program example 1 Linear voltage sweep and current measurements with Model 2990 5 Equipment needed e 1 high voltage diode enclosed in a safe test fixture e 1 Model 2290 10 high voltage power supply e 1 GPIB cable to connect the Model 2290 10 to a computer with a GPIB interface e Appropriate cabling to connect the Model 2290 10 to the test fixture Section 7 Typical applications Model 2290 10 10 kV Power Supply User s Manual Device connections The Model 2290 10 is a unipolar power supply Therefore the diode should be connected so that it can b
48. s of specific lines Import pyVisa module into the Python environment import visa import time Open a VISA session with the 2290 at GPIB address 14 and 263xB at GPIB address 26 ki2290 visa instrument GPIB 14 ki263x visa instrument GPIB 26 Reset and clear the status of the 263xB ki263x write reset AOS tico MACS Reset and clear any errors of the 2290 ki2290 write RST ki2290 write CLS REZZO weiten ERCO ON Configure the 263xB as an ammeter set the current limit and current measurement range ki263x write smua source rangev 0 2 ki263x write smua source levelv 0 ki263x write smua source limiti le 3 ki263x write smua measure rangei 100e 6 Configure the display of the 263xB and turn on the output ki263x write display screen display SMUA ki263x write display smua measure func display MEASURE_DCAMPS ki263x write smua source output smua OUTPUT_ON Define sweep variables for the programmed output voltage and measured current readings voltage 0 currReading currRdgList turn on the output of the 2290 time sleep 1 ki2290 write HVON Perform a sweep from 0 to 3000V and make current measurements at each point of the sweep fOr m iin Fang 0 Liye ki2290 write VSET str voltage time sleep 2 Allow new voltage level to stabilize currReading ki263x ask print smua measure i t
49. s to limit fault current and voltage to the card Before operating an instrument ensure that the line cord is connected to a properly grounded power receptacle Inspect the connecting cables test leads and jumpers for possible wear cracks or breaks before each use When installing equipment where access to the main power cord is restricted such as rack mounting a separate main input power disconnect device must be provided in close proximity to the equipment and within easy reach of the operator For maximum safety do not touch the product test cables or any other instruments while power is applied to the circuit under test ALWAYS remove power from the entire test system and discharge any capacitors before connecting or disconnecting cables or jumpers installing or removing switching cards or making internal changes such as installing or removing jumpers Do not touch any object that could provide a current path to the common side of the circuit under test or power line earth ground Always make measurements with dry hands while standing on a dry insulated surface capable of withstanding the voltage being measured For safety instruments and accessories must be used in accordance with the operating instructions If the instruments or accessories are used in a manner not specified in the operating instructions the protection provided by the equipment may be impaired Do not exceed the maximum signal levels of the instruments and ac
50. t the address as required using the up and down arrow buttons and then press ENTER The allowable primary address range is from 0 to 30 Be sure to avoid address conflicts with other instruments on the bus including the controller Bus connections With the power off connect the Model 2290 10 GPIB connector to the computer IEEE 488 interface Shielded GPIB cables such as the Keithley Model 7007 are recommended Command syntax Commands sent to the Model 2290 10 use ASCII characters Commands may be in either upper or lower case and may contain any number of embedded space characters A command to the Model 2290 10 must be followed by a command terminator The terminator is a linefeed lt LF gt or EOI No command processing occurs until a command terminator is received Commands beginning with an asterisk are IEEE 488 2 defined common commands Multiple commands Multiple commands may be sent on one command line by separating them with semicolons When several commands are included on the same line the entire line is parsed and executed before any other device action proceeds This method allows command synchronization using the synchronization command WAI Command buffer The Model 2290 10 stores incoming bytes in a 128 character input buffer Characters accumulate in the input buffer until a command terminator either CR or lt LF gt is received at which point the message is parsed and executed Query responses are bu
51. t the high voltage is on Note SRQ may be enabled for corresponding condition by sending SRE with decimal value of bit except bit 6 For example SRE 4 enables SRQ on current trip Indicates that a current limit condition has occurred he V trip trip and lim bits are latched bits They are set on the occurrence of the appropriate event and will remain set until either the status byte is read or the CLS command is sent Latching allows you to detect if a trip or limit condition has ever occurred Request for Service bit in serial poll byte Master Summary Status bit in STB response Standard event status register The next table summarizes the bits in the Standard Event Status Register which can be read using the ESR query This status register is defined by the IEEE 488 2 standard and is used primarily to report errors in commands received over the GPIB When the bits in this register are latched they stay latched and are cleared by reading them or by sending the CLS command If a bit in the Standard Event Status Register is latched and the corresponding bit in the Standard Event Status Enable Register programmed with ESE is also latched the ESB bit in the Status Byte Register is latched 5 2 2290 10 900 01 Rev A December 2013 Model 2290 10 10 kV Power Supply User s Manual Section 5 Status messages Table Standard event status register Decimal Description value COC ue Ho o ume 5
52. tage examples Current Monitor Provides a 0 to 10V signal for 0 to full scale current output The next table summarizes the current monitor output examples Wow v 360 pA 7 1V 700 pA 1000 pA 2290 10 900 01 Rev A December 2013 Section 4 Remote operation In this section MERGE Ue arar t dote Rate D 4 1 Command Sy icre Urt acrilico abia iio 4 3 Remote command Sene tssis n 4 4 Introduction This section contains detailed information on remotely programming the Model 2290 10 over the IEEE 488 GPIB interface and the RS 232 interface Any computer that supports the IEEE 488 bus may be used to program the instrument The Model 2290 10 supports the IEEE 488 1 1978 interface standard as well as the required common commands of the IEEE 488 2 1987 standard The cabling distance between the controller and instrument hub with GPIB is limited to 9 meters 30 feet In a system connected with GPIB you can have 15 instruments attached to each controller RS 232 cable The settings for the RS 232 interface are 9600 baud and with no parity The complete instrument configuration is retained in non volatile memory Connect GPIB cables to your instrument To connect an instrument to the GPIB use a cable equipped with standard GPIB connectors as shown below Figure 7 GPIB Connector Section 4 Remote operation Model 2290 10 10 kV Power Supply User s Manual To make a parallel connection to the instru
53. th if not handled properly Use only connecting cables with a rated working voltage of 10 kV or higher see the Optional accessories section for more information Do not connect the high voltage output to exposed c rcuitry Any load connected to the high voltage output should be enclosed in a metal shield that is connected to safety earth ground using 418 AWG or larger wire If the instrument is used in a manner not specified by Keithley Instruments the protection provided by the equipment may be impaired 2290 10 900 01 Rev A December 2013 1 7 Section 2 Safe configuration and test setup In this section nisu sii mer e E 2 1 High voltage safety precautions oncoccencne cette 2 1 Safely connect to Instruments 2 etri eet Serene riesen 2 2 WATS HOCK CMG UIE is 205 scescsiesces M 2 2 Introduction The Model 2290 10 can generate hazardous voltages It is intended for use with a test fixture or ina test system that has safety mechanisms in place to prevent an operator from accessing these voltages This section describes how to use the Model 2290 10 to test a device with a custom test fixture or system High voltage safety precautions Make sure that you read and observe the following high voltage safety precautions before operating the Model 2290 10 A WARNING The Model 2290 10 is capable of sourcing hazardous live high voltages that can cause personal injury or death due to electri
54. that might result in personal injury or death Always read the associated information very carefully before performing the indicated procedure The CAUTION heading in the user documentation explains hazards that could damage the instrument Such damage may invalidate the warranty Instrumentation and accessories shall not be connected to humans Before performing any maintenance disconnect the line cord and all test cables To maintain protection from electric shock and fire replacement components in mains circuits including the power transformer test leads and input jacks must be purchased from Keithley Instruments Standard fuses with applicable national safety approvals may be used if the rating and type are the same Other components that are not safety related may be purchased from other suppliers as long as they are equivalent to the original component note that selected parts should be purchased only through Keithley Instruments to maintain accuracy and functionality of the product If you are unsure about the applicability of a replacement component call a Keithley Instruments office for information To clean an instrument use a damp cloth or mild water based cleaner Clean the exterior of the instrument only Do not apply cleaner directly to the instrument or allow liquids to enter or spill on the instrument Products that consist of a circuit board with no case or chassis e g a data acquisition board for installation into a
55. www keithley com Model 2290 10 10 kV Power Supply User s Manual 2290 10 900 01 Rev A December 2013 QAI AA 2290 10 900 01 A Greater Mesure of Confidence KEITH LEY A Tektronix Company Model 2290 10 10 kV Power Supply User s Manual O 2013 Keithley Instruments Inc Cleveland Ohio U S A All rights reserved Any unauthorized reproduction photocopy or use of the information herein in whole or in part without the prior written approval of Keithley Instruments Inc is strictly prohibited All Keithley Instruments product names are trademarks or registered trademarks of Keithley Instruments Inc Other brand names are trademarks or registered trademarks of their respective holders Document number 2290 10 900 01 Rev A December 2013 Safety precautions The following safety precautions should be observed before using this product and any associated instrumentation Although some instruments and accessories would normally be used with nonhazardous voltages there are situations where hazardous conditions may be present This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury Read and follow all installation operation and maintenance information carefully before using the product Refer to the user documentation for complete product specifications If the product is used in a manner not specified the
56. y the front panel Make sure that the rear panel VOLTAGE switch is in the desired position 4 The Interlock is not asserted Service For repair and instrument adjustment services contact your local Keithley Instruments representative For worldwide contact numbers visit the Keithley Instruments website http www keithley com 9 2 2290 10 900 01 Rev A December 2013 Specifications are subject to change without notice All Keithley trademarks and trade names are the property of Keithley Instruments Inc All other trademarks and trade names are the property of their respective companies Keithley Instruments Inc Corporate Headquarters 28775 Aurora Road Cleveland Ohio 44139 440 248 0400 Fax 440 248 6168 1 888 KEITHLEY www keithley com KEI T HLEY A Tektronix Company A Greater Measure of Confidence 7 13
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