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Keithley 2280 Series, Reference Manual

The Keithley 2280 Series offers precision power supplies with advanced features for precise voltage and current measurements. Gain a better understanding of your device with the free Quick Start Manual available for download on manualshive.com. Get started with your Keithley 2280 Series today.

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In this section: 

Introduction ...............................................................................8-1 
Contacting support ....................................................................8-1 
What to do if the power supply does not turn on .......................8-2 
LAN troubleshooting suggestions .............................................8-3 
Error summary ..........................................................................8-3 

 

 

Introduction 

This section includes troubleshooting information on the Keithley Instruments Series 2280 Precision 

DC Power Supply, including a complete listing of error messages and troubleshooting suggestions. 

 

Contacting support 

If you have any questions after reviewing this information, please contact your local Keithley 

Instruments representative or call Keithley Instruments corporate headquarters (toll-free inside the 

U.S. and Canada only) at 800-935-5595, or from outside the U.S. at +1-440-248-0400. For worldwide 

contact numbers, visit the 

Keithley Instruments website

 (

tek.com/keithley

). 

When contacting Keithley, please have ready: 

 

The serial number of the instrument. 

 

The firmware revision of the instrument. 

 

The model and firmware revision of all installed cards. 

When you call, have the information available, and, if possible, be near the instrument. 

 

Section 8 

Troubleshooting guide 

Summary of Contents for 2280 Series

Page 1: ...Reference Manual 077085503 March 2019 P077085503 077085503 Series 2280 Precision Measurement DC Power Supplies tek com keithley...

Page 2: ...Precision DC Power Supply Reference Manual Series 2280...

Page 3: ...prohibited These are the original instructions in English All Keithley Instruments product names are trademarks or registered trademarks of Keithley Instruments LLC Other brand names are trademarks or...

Page 4: ...d 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 Exerc...

Page 5: ...lains hazards that could damage the instrument Such damage may invalidate the warranty The CAUTION heading with the symbol in the user documentation explains hazards that could result in moderate or m...

Page 6: ...nstrument on and off 2 34 Test connections 2 37 Front panel connector 2 38 Rear panel output mating connector 2 39 Two wire local sense connection 2 39 Four wire sense connection 2 40 Open leads detec...

Page 7: ...1 Changing the instrument access mode 3 1 Changing the password 3 2 Graph 3 2 Changing the window position and zoom 3 3 Adjusting the scale and offset of the Y axis 3 4 Output delay slew rate and sou...

Page 8: ...value 4 13 Displayed measurements 4 15 Select the source of readings 4 17 Application examples 5 1 Simple voltage output and current measurement 5 1 Equipment required 5 1 Set up remote communication...

Page 9: ...unction KMATh MMFactor 7 23 CALCulate 1 function KMATh MUNits 7 25 CALCulate 1 function STATe 7 26 CALCulate2 DATA 7 27 CALCulate2 FORMat 7 28 CALCulate2 FORMat ELEMents 7 30 CALCulate2 FUNCtion 7 31...

Page 10: ...nce ACQuire 7 71 SENSe n function REFerence STATe 7 72 SENSe n function RESolution 7 73 SOURce subsystem 7 74 SOURce n DELay 7 74 SOURce n DELay STATe 7 75 SOURce n function PROTection LEVel 7 76 SOUR...

Page 11: ...nication ABORt 7 113 SYSTem COMMunication LAN CONFigure 7 114 SYSTem COMMunication LAN MACaddress 7 115 SYSTem DATE 7 115 SYSTem ERRor 7 116 SYSTem ERRor CLEar 7 116 SYSTem ERRor CODE 7 117 SYSTem ERR...

Page 12: ...ons 8 3 Error summary 8 4 Next steps 9 1 Additional Series 2280 information 9 1 Maintenance A 1 Introduction A 1 Line fuse replacement A 1 Upgrading the firmware A 2 From the front panel A 3 Perform D...

Page 13: ...e noise 20 MHz B 39 Check current noise 20 MHz B 41 Calibration and adjustment C 1 Overview C 1 Environmental conditions C 1 Warmup period C 2 Line power C 2 Calibration considerations C 2 Calibration...

Page 14: ...Register D 7 Service Request Enable Register D 9 Status register sets D 9 Register bit descriptions D 9 Event registers D 20 Event enable registers D 20 Condition registers D 20 Queues D 20 Output que...

Page 15: ...st information from your measurements Extended warranty Additional years of warranty coverage are available on many products These valuable contracts protect you from unbudgeted service expenses and p...

Page 16: ...onents of the instrument and basic operation Functions and features Describes features and functions such as measure operations list mode reading buffers triggering the digital I O port graph function...

Page 17: ...display and statistics for trend analysis Up to nine groups of user definable lists with up to 99 steps for each list GPIB USB TMC and LAN LXI interfaces for automated test development Filtering to re...

Page 18: ...ese 0713259xx Korean 0713262xx Russian 0713263xx Where xx represents the revision number Optional accessories Optional accessory Part number Model 2280 001 Output Mating Connector 2280 001 USB Cable T...

Page 19: ...Year ISO 17025 Calibration Plan C 2280S 32 6 3Y 1702 C 2280S 60 3 3Y 1702 KeithleyCare 5 Year ISO 17025 Calibration Plan C 2280S 32 6 5Y 1702 C 2280S 60 3 5Y 1702 General ratings The Series 2280 inst...

Page 20: ...n 2 78 Saving setups 2 82 Using the event log 2 85 System information 2 86 Instrument sounds 2 87 Resets 2 87 Front panel overview The front panel of Series 2280 is shown below Descriptions of the con...

Page 21: ...ation control Moves the cursor to the left or the right to highlight a listed value or menu item so that you can select it ENTER key Selects the highlighted choice or allows you to edit the selected f...

Page 22: ...d ground output binding posts for output connections Rear panel overview The rear panel of the Series 2280 is shown below descriptions follow the figure Figure 2 Series 2280 rear panel LAN port Suppor...

Page 23: ...fer to Digital I O on page 3 19 for information IEEE 488 port GPIB connection the default setting for the Series 2280 is 5 Refer to GPIB communication on page 2 45 Rear output terminals Connections fo...

Page 24: ...indicators 3 Setting area Located in the lower left corner of the OUTPUT view area Shows the presently set measure range voltage and current limit 4 Soft key area The soft key area is on the bottom of...

Page 25: ...IB Instrument is communicating through a GPIB interface VXI 11 Instrument is communicating using VXI 11 USBTMC Instrument is communicating through a USB interface firmware version 1 05 and earlier por...

Page 26: ...that caused SRQ are cleared Level trigger enabled indicator When a voltage level trigger or current level trigger is enabled a solid white square indicator is visible to the left of the Buffer indicat...

Page 27: ...8 077085503 March 2019 Trigger mode settings indicator This indicator shows the status of the trigger operation Figure 7 Trigger indicator List and recall settings indicator This indicator shows the...

Page 28: ...r and Event Log Figure 9 Error and event indicator This indicator has a different appearance based on the type of event that has been logged Icon Description A serious error has occurred These major e...

Page 29: ...ed on and the power supply is in constant current CC mode DISABLE The output is turned off and pressing the OUTPUT switch does not turn on the output Fault status The fault status indicator means that...

Page 30: ...y pressing the ENTER or EXIT key Figure 10 Soft key area 1 for power supply Setting Description V Set Configure the voltage setting using the numerical keys soft keys and navigation control I Limit Co...

Page 31: ...t the current threshold for overcurrent protection VMAX Edit the maximum voltage setting value Resolution Specify the measurement resolution for the selected measurement function Calculate Specify the...

Page 32: ...area 3 Setting Description List Configure the list function Enable Run a specified list Number Specify the list number The default setting for list number is Demo You can run a predefined list For mo...

Page 33: ...ure below Figure 13 Power supply main menu The main menu is organized into five submenus which are labeled in green across the top of the display The icons in each column open interactive screens Sour...

Page 34: ...Output Delay Enable or disable output delay Slew Rise Set the rising rate for voltage source Slew Fall Set the falling rate for voltage source Delay Rise Set the delay time that the instrument waits...

Page 35: ...ngs before each specified point The default settings are 0 000 V 0 1000 A 0 100 s Copy Copy the selected settings of the point and insert a new point with the same settings before each point Points Di...

Page 36: ...ment measures voltage and current at the same time V Voltage measurement function The instrument only measures voltage I Current measurement function The instrument only measures current Range Set the...

Page 37: ...rements that are averaged when filtering is enabled The number of measurements can be 2 through 100 Window Filtering uses a window to control filter threshold When the input signal remains within the...

Page 38: ...tics to apply to the readings in the buffer Available statistics Minimum Minimum value Maximum Maximum value Peak Peak Maximum value minimum value Mean Average Std Dev Standard deviation Statistics Fu...

Page 39: ...are displayed on the screen Y Axis Select the data that is plotted on the Y axis You can select Current Voltage or Both I Auto Adjust Enable or disable the automatic adjustment of the current scale a...

Page 40: ...abled The Series 2280 supports the following types of lists Step One trigger signal will output one list step Sweep One trigger signal will output the entire list Disable The list is disabled Idle Con...

Page 41: ...I O on page 3 19 Setting Description Line 1 Specify one of the following line modes for digital I O line 1 Trigger In Output HI Output LO Manual In Line 2 Specify one of the following line modes for d...

Page 42: ...Set the value of the current that will trigger the data logging in the data buffer Voltage Direction If you set this as Rise the trigger will be activated when the voltage rises above the triggering...

Page 43: ...ng these settings are the event log communications error beeper key clicks backlight brightness and timer time and date calibration and system and calibration passwords and settings The following topi...

Page 44: ...hat is assigned to another instrument or to the GPIB controller LXI LCI Reset the LAN configuration LAN settings Description TCP IP Mode Select Manual to manually set the Local IP gateway and subnet m...

Page 45: ...d Change the remote connection or calibration passwords You need the remote connection password to open the LXI virtual front panel and send SCPI commands You need the calibration password before you...

Page 46: ...ous version of the firmware from a file on a USB flash drive When you return to a previous version the instrument verifies that the version you are loading is earlier than what is on the instrument If...

Page 47: ...ghtness Where brightness is from 1 to 100 For example 75 represents 75 percent brightness and 100 represents full brightness Installing the system This section contains information on how to install y...

Page 48: ...ensions The following figures show the mounting screw locations and the dimensions of the instrument with and without the bumpers The instrument weighs 10 67 kg 23 53 lb with the bumpers and 10 40 kg...

Page 49: ...ion Series 2280 Precision DC Power Supply Reference Manual 2 30 077085503 March 2019 The following figures show the dimensions when the bumpers are installed Figure 17 Series 2280 front and rear panel...

Page 50: ...Series 2280 Precision DC Power Supply Reference Manual Section 2 General operation 077085503 March 2019 2 31 Figure 18 Series 2280 top and side dimensions with bumpers...

Page 51: ...ries 2280 Precision DC Power Supply Reference Manual 2 32 077085503 March 2019 The following figures show the dimensions when the bumpers have been removed Figure 19 Series 2280 front and rear panel d...

Page 52: ...Series 2280 Precision DC Power Supply Reference Manual Section 2 General operation 077085503 March 2019 2 33 Figure 20 Series 2280 top and side dimensions with bumpers removed...

Page 53: ...tains a separate protective earth safety ground wire for use with grounded outlets When proper connections are made the instrument chassis is connected to power line ground through the ground wire in...

Page 54: ...ress the front panel POWER switch to place it in the on I position A status bar is displayed as the instrument powers up The home screen is displayed when power up is complete 3 To turn your instrumen...

Page 55: ...never make or break connections to the Series 2280 while the instrument is powered on Turn off the equipment from the front panel or disconnect the main power cord from the rear of the Series 2280 bef...

Page 56: ...to make connections to the device under test DUT You must use either the front or rear terminals You cannot use connections to both the front panel and rear panel for the same test setup you must choo...

Page 57: ...tputs from the front panel Insert standard banana plugs into the front connectors as shown in location 1 Insert safety test leads into the front connectors as shown in location 1 For details see the f...

Page 58: ...ense high and sense low terminals The rear output terminals accept wire sizes from AWG 20 to AWG 12 Two wire local sense connection You can connect a device to the instrument in a two wire sense conne...

Page 59: ...leads between the power supply and the load The maximum voltage drop is 1 V per lead As shipped the sense terminals are connected to the output terminals by shorting jumpers Before connecting the wir...

Page 60: ...sted For more information refer to the following figure Figure 26 Four wire connection with twisted pair wires Make sure you make the connections correctly Incorrect connections between output and sen...

Page 61: ...tting Vclamp is introduced from a clamp circuit typically less than 7 V Without the clamp circuit the instrument could output its maximum voltage when the open lead occurs Example 1 Connect a 300 resi...

Page 62: ...interface by sending the SYSTem ERRor command Reversed sense leads When the following connections occur the instrument generates a reversed sense leads error Sense HI is connected to Output LO Sense H...

Page 63: ...press the ENTER key to initiate the trigger model To clear an overprotection error using a SCPI command When an overprotection error occurs send the following command to clear the register and initiat...

Page 64: ...ave up to 15 devices connected to a GPIB interface including the controller The maximum cable length is the lesser of either The number of devices multiplied by 2 m 6 5 ft 20 m 65 6 ft You may see err...

Page 65: ...two screws on it to ensure that connections remain secure The figure below shows a typical connection diagram for a test system with multiple instruments To avoid possible mechanical damage stack no m...

Page 66: ...el 3 Connect any additional connectors from other instruments as required for your application 4 Make sure the other end of the cable is properly connected to the controller Set the GPIB address The d...

Page 67: ...dialog box is displayed 5 Enter the address 6 Select OK If you are using a Series 2280 with no front panel you can set the GPIB address with the SCPI command SYSTem GPIB ADDRess LAN communications The...

Page 68: ...er cable has its receive RX and transmit TX lines crossed to allow the receive line input to be connected to the transmit line output on the network interfaces Figure 34 One to one connection with a c...

Page 69: ...networks two network interface cards are required in the computer controller Though the two networks are independent stations on the corporate network can access the instruments and the instruments ca...

Page 70: ...net using appropriate security methods Data collection and distribution can be controlled from virtually any location Figure 37 Instrumentation connection to enterprise routers or servers Raw socket c...

Page 71: ...ou can also check the settings with the SCPI command SYSTem COMMunication LAN CONFigure The Series 2280 powers up using the last remote interface used Set up automatic LAN configuration If you are con...

Page 72: ...n placing the instrument on a corporate network The instrument IP address has leading zeros but the computer IP address does not To set up manual IP address selection on the instrument 1 From the home...

Page 73: ...cting the host computer to a corporate network Contact your system administrator for more information LAN status indicator When the LAN status indicator on the front panel of the instrument turns soli...

Page 74: ...ddress of the instrument in the address box of the web browser For example if the instrument IP address is 169 254 152 168 enter 169 254 152 168 in the browser address box 3 Press Enter on the compute...

Page 75: ...the LAN status indicator to steady on Change the IP configuration through the web interface The LAN settings such as IP address subnet mask gateway and DNS address can be changed through the web page...

Page 76: ...s is normal and does not indicate an error or failure of the operation If this occurs find the correct IP address and reopen the web page of the instrument to continue Change the web interface passwor...

Page 77: ...t 1 From the navigation bar of the web interface home page select Virtual Front Panel 2 If you are prompted for a password enter it and select Submit The default password is admin 3 In the left upper...

Page 78: ...ual Front Panel 2 If you are prompted for a password enter it and select Submit The default password is admin 3 In the left upper corner of the virtual front panel select Operation The Snapshot and Fe...

Page 79: ...the virtual front panel refer to Front panel user interface on page 2 4 The Series 2280 only allows fewer than three clients to open the virtual front panel web page at the same time Only the first s...

Page 80: ...d a command and read the response from the instrument 6 Select View Errors to get the oldest error in the event log and remove it 7 Select Clear to clear all the history information shown on the web p...

Page 81: ...n bar of the web interface home page select Data Logging The following screen is displayed Figure 45 Data logging web page There are three ways to log data on the web page There is a STOP MODE box in...

Page 82: ...If the data logging mode is set to Manual select Stop on the right side of the screen to stop logging test data If the mode is set to Time or Point the logging will stop automatically when the time o...

Page 83: ...1 means the current has exceeded the preset current range 0 means the current is within the range For more details about this setting refer to Setting overcurrent protection limits on page 2 80 Clear...

Page 84: ...s Update to search for software dialog box opens select No and then select Next 5 On the USB Test and Measurement device dialog box select Next and then select Finish Communicate with the instrument F...

Page 85: ...the Keithley Configuration Panel to determine the VISA resource string 1 Select Start Programs Keithley Instruments Keithley Configuration Panel The Select Operation dialog box is displayed 2 Select A...

Page 86: ...9 2 67 4 Select USB 5 Select Next The Select Instrument Driver dialog box is displayed Figure 48 Select Instrument Driver dialog box 6 Select Auto detect Instrument Driver Model 7 Select Next The Conf...

Page 87: ...ed Figure 49 Name Virtual Instrument dialog box 9 In the Virtual Instrument Name box enter a name that you want to use to refer to the instrument 10 Select Finish 11 Select Cancel to close the Wizard...

Page 88: ...I VISA on your system you can run NI MAX or the VISA Interactive Control utility See the National Instruments NITM documentation for information If you have a full version of TEK VISA on your system y...

Page 89: ...re installs the following components Microsoft NET Framework NITM IVI Compliance Package NI VISATM Run Time Engine Keithley SCPI based Instrument IVI C driver Keithley I O Layer To install the Keithle...

Page 90: ...el Also you can change the value using the arrows or navigation control When the output is turned on changing the value using the navigation control will change the source voltage and current instantl...

Page 91: ...perating in constant voltage mode the power supply provides a regulated output voltage As the load increases the output voltage remains constant until the preset current limit is reached Then the cros...

Page 92: ...t voltage mode to the constant current mode also occurs automatically in response to an increase in load For example connect a 5 resistor to the binding posts on the front panel set the voltage to 25...

Page 93: ...280 allows you to perform the following measurement functions Measurement functions What the instrument measures Concurrent V I Measure voltage and current at the same time Voltage V Only measure volt...

Page 94: ...ple current measurement ranges and one voltage range These ranges are listed in the following table Model Current measurement range Voltage measurement range 2280S 32 6 10 A 32 V 1 A 100 mA 10 mA 2280...

Page 95: ...ument displays an overflow message select a higher range You can set specific measurement ranges or allow the instrument to choose the ranges automatically For a current measurement send the command S...

Page 96: ...ent range that the instrument chose you must query the range after a measurement is made You must set the measurement function before the measurement range can be set If you set the measurement range...

Page 97: ...2 This is the sourced voltage value at the device The Series 2280 also provides overtemperature protection to prevent damaging heat build up Overvoltage protection Overvoltage protection restricts the...

Page 98: ...rvoltage limit for the voltage source to 20 V send the command VOLTage PROTection 20 See the command description for SOURce n function PROTection LEVel on page 7 76 for the full list of options Overcu...

Page 99: ...set the limit 4 Select HOME to return to the operating display To set overcurrent protection using SCPI commands To set the overcurrent limit for the current source to 4 A send the command CURRent PRO...

Page 100: ...with an inoperative cooling fan may result in damage to the instrument Overprotection error When an overcurrent overvoltage or overtemperature protection error occurs the instrument Generates an overp...

Page 101: ...event damage to the device under test DUT You cannot specify a voltage setting over the maximum voltage limit If you set a maximum voltage limit that is smaller than the voltage source value the sourc...

Page 102: ...is displayed 5 Select a location to save the setup and press ENTER A keyboard is displayed 6 Use the keyboard to enter the name of the setup 7 Press the ENTER key The setup is added to internal memory...

Page 103: ...window is displayed 4 Select a saved setup in the pop up window 5 Press the ENTER key The selected setup is applied to the instrument To recall a saved setup from external USB flash drive using the fr...

Page 104: ...the SCPI command SYSTem POSetup STATe Using the event log The event log records errors that are reported by the instrument The event log can hold up to 64 errors When more than 64 errors are in the ev...

Page 105: ...Configure the instrument to the settings that you want to save To save the setup with the name myerror csv send the command SYSTem EVENtlog SAVE myerror Clear the event log To clear the event log from...

Page 106: ...lect On or Off To turn the error beeper on or off using SCPI commands SYSTem BEEPer ERRor ON SYSTem BEEPer ERRor OFF To turn the key clicks on or off from the front panel 1 From the home page press th...

Page 107: ...sing the SCPI command set refer to STATus PRESet on page 7 105 Reset the instrument You can reset many of the instrument settings to their default values For details about what gets reset see Reset de...

Page 108: ...f 0 Off MENU Measure Data Buffers Statistics Format CALCulate2 FORMat ELEMents on page 7 30 All READ UNIT MENU Measure Data Buffers Statistics Function CALCulate2 FUNCtion on page 7 31 Current CURR ME...

Page 109: ...T on page 7 7 command or SYSTem PRESet on page 7 124 command MENU Trigger Digital In Out DIGital LINE n FUNCtion on page 7 45 Line 1 Trigger In Line 2 Meter Out Line 3 Fault Out Line 4 Manual In Line...

Page 110: ...may not be available for the function you are using Output reset values Setting Default value reset from MENU System Settings Reset Default value reset by the RST on page 7 7 command or SYSTem PRESet...

Page 111: ...nction DIGits on page 7 65 6 5 6 MENU Measure Settings NPLC SENSe n function NPLCycles on page 7 66 1 000 1 0000 MENU Measure Settings Auto Zero SYSTem AZERo n STATe on page 7 111 On 1 On HOME Resolut...

Page 112: ...tect Overcurrent Protection SOURce n function PROTection LEVel on page 7 76 6 10 A 6 10 MENU Source Protect Overvoltage Protection SOURce n function PROTection LEVel on page 7 76 21 0 V 21 0 MENU Sour...

Page 113: ...ary ENABl e on page 7 109 0 Not available from front panel STATus OPERation ENABle on page 7 101 0 Not available from front panel STATus OPERation INSTrument ENABle on page 7 102 0 Not available from...

Page 114: ...Nt on page 7 150 1 1 Some of the options listed in this table are only available for specific functions If you do not see the option listed here on the menu it may not be available for the function yo...

Page 115: ...access by one remote interface at a time with passwords required on all interfaces The front panel is read only when you are using a remote interface You can view the home graph or data sheet screen...

Page 116: ...8 Select the OK button on the displayed keyboard A verification screen is displayed 9 Enter the new password again 10 Select the OK button on the displayed keyboard The password is reset You can rese...

Page 117: ...ifies 50 readings shown on the screen For detail see the following figure Figure 55 Window position and zoom To change the window position and zoom on the front panel 1 Press the MENU key 2 Under View...

Page 118: ...nd offset of Y axis according to current and voltage measurements To set the auto adjustment on the front panel 1 Press the MENU key 2 Under Views select Graph 3 Select the button next to I Auto Adjus...

Page 119: ...set For details refer to the following table Model number Current offset Voltage offset 2280S 32 6 6 1 A to 6 1 A 32 V to 32 V 2280S 60 3 3 3 A to 3 3 A 60 V to 60 V Before configuring the scale or of...

Page 120: ...a value Using SCPI commands To set output on and off delays send the following commands OUTP DEL RIS 2 OUTP DEL FALL 3 To enable the output delay send the command OUTP DEL STATe ON Slew rate The slew...

Page 121: ...setting of the output voltage and the beginning of the first reading This is a source delay measure SDM cycle During each SDM cycle the following occurs 1 The supply sets the output level 2 A delay t...

Page 122: ...uffer The data buffer provides the following statistics Average Minimum Maximum Peak to peak Standard deviation You can perform the following operations on the data buffer from the front panel or the...

Page 123: ...ffer indicator Setting reading buffer size and buffer mode To configure the buffer configure the following settings Set the buffer size Set the buffer fill mode Buffer size The initial buffer capacity...

Page 124: ...s only configurable in the power supply function The nonconfigurable buffer mode in the battery test and battery simulation function is Always When autoclear is enabled the buffer is cleared automatic...

Page 125: ...o Always 5 Press the HOME key to return to the home screen To set the reading buffer mode to overwrite old readings when the buffer is full send the following command TRACe FEED CONTrol ALWays To set...

Page 126: ...ading buffer to a USB flash drive The stored file can be loaded directly into Microsoft Excel or another tool The file contains all the information the instrument records about each data point in the...

Page 127: ...ng value is V volts Math T when Math is on F when Math is off Output CC constant current CV constant voltage or OFF For details see Constant voltage CV and constant current CC mode on page 2 72 Date D...

Page 128: ...splayed 4 If you want to view the statistics select the button next to Statistics The Statistics screen is displayed 5 Press the button next to On The statistics results are displayed below the data t...

Page 129: ...e of the file you want to save It is not necessary to enter the file extension All files are saved as csv files 6 Select Yes to confirm saving the file When the DATA BUFFERS window is displayed again...

Page 130: ...e data in the buffer to perform with statistics You must select either the voltage or current value in the buffer to perform statistics calculations When you configure these settings it affects the Gr...

Page 131: ...pecify the returned data elements for statistical calculations The elements include value reading number unit and time You can specify one or more parameters This only applies to minimum and maximum c...

Page 132: ...flash drive send the following command TRACe SAVE my_data To save readings from 1 through 100 and relative timestamps to a file named test_data csv on a USB flash drive send the following command TRAC...

Page 133: ...O You can use the Series 2280 digital input output with the trigger model to control an external digital circuit such as a device handler that is used to perform binning operations To control or conf...

Page 134: ...tion 1 I O line 1 2 I O line 2 3 I O line 3 4 I O line 4 5 Vext line relay flyback diode protection 6 I O line 5 7 5 V line 8 I O line 6 9 Ground Use this pin to drive external logic circuitry Maximum...

Page 135: ...an overprotection error or a reverse sense leads error occurs the line is set to logic low 0 V After you clear the error from the front panel or using SCPI commands the line is set to logic high For...

Page 136: ...e Vext pin to control externally powered devices make sure to configure the corresponding digital output lines In the low state 0 V the output transistor sinks current through the external device In t...

Page 137: ...configure digital I O lines Using the front panel to configure digital I O lines 1 Press the MENU key 2 Under Trigger select Digital In Out 3 Select the button next to the specified digital I O line T...

Page 138: ...t represents Line 1 Trigger in Line 2 Meter complete output Line 3 Fault output Line 4 to line 6 Not available MOUTH Manual output high MOUTL Manual output low MINPut Manual input If you apply AUTO to...

Page 139: ...l The trigger model controls the sequence in which measurements occur It consists of two layers Arm Layer and Trigger Layer to provide versatility Programmable counters allow operations to be repeated...

Page 140: ...etection occurs immediately allowing operation to continue Bus Event detection occurs when a bus trigger TRG is received External Trigger Event detection occurs when an input trigger is sent through t...

Page 141: ...or details about the measurement function refer to Select a measurement function on page 2 74 Counter Programmable counters are used to repeat operations within the trigger model layers For example if...

Page 142: ...enabled INIT CONT ON the instrument continuously performs measurements With continuous initiation disabled INIT CONT OFF the instrument returns to the idle state after all measurements are complete ba...

Page 143: ...Gger SEQuence n SOURce on page 7 151 Select the control source for the arm layer The available control sources are Immediate triggering External triggering Manual triggering for details see the exampl...

Page 144: ...ayed 3 Select the button next to Voltage and press the ENTER key 4 Select On 5 Select the button next to Voltage Level and press the ENTER key 6 Set the threshold voltage value for the trigger 7 Selec...

Page 145: ...DC Power Supply Reference Manual Section 3 Functions and features 077085503 March 2019 3 31 The following figure illustrates how the level trigger is activated when the voltage rises Figure 67 Voltag...

Page 146: ...tage level trigger fall Configuring a current level trigger To configure a current level trigger from the front panel 1 Press the Menu key 2 Under Trigger select Level and press the ENTER key The LEVE...

Page 147: ...ow many points to save before activating the level trigger To configure a current level trigger send the following SCPI commands TRACe n TRIGger CURRent STATe TRACe n TRIGger CURRent LEVel TRACe n TRI...

Page 148: ...n You can use lists to set up the instrument to source specific voltage and current values to a device under test DUT You can specify up to 99 step points of voltage and current limit You can also spe...

Page 149: ...t locations You can also import a predefined list from an external USB flash drive For details refer to Importing a list from an external USB flash drive on page 3 37 6 Use the Insert or Copy button t...

Page 150: ...mmands LIST1 CURR 1 1 1 LIST1 VOLT 5 10 15 LIST1 DWEL 2 2 2 LIST1 CURR APPE 2 2 2 LIST1 VOLT APPE 5 10 15 LIST1 DWEL APPE 3 3 3 LIST SAVE INTE 1 Points Voltage V Current A Dwell s 1 5 1 2 2 10 1 2 3 1...

Page 151: ...USB flash drive on the front panel 1 Press the Menu key 2 Under Source highlight the List icon using either the navigation control or the soft keys Press the ENTER key The Source List screen is displa...

Page 152: ...want to export to the USB flash drive and press ENTER The specified list is saved to a csv file on the USB flash drive The filename is the same as the list name To export a list to USB flash drive us...

Page 153: ...Output delay MENU Source Settings Output Delay MENU Source Settings Delay Rise MENU Source Settings Delay Fall OUTPut DELay STATe on page 7 56 OUTPut DELay RISing on page 7 55 OUTPut DELay FALLing on...

Page 154: ...ttings Rel State MENU Rel Filter Settings Rel Acquire MENU Rel Filter Settings Reference HOME Calculate Rel SENSe n function REFerence STATe on page 7 72 SENSe n function REFerence SENSe n function RE...

Page 155: ...PI commands Trigger MENU Trigger Configure List Type MENU Trigger Configure Idle MENU Trigger Configure Arm Source MENU Trigger Configure Arm Count MENU Trigger Configure Trigger Source MENU Trigger C...

Page 156: ...et up the dwell time refer to Configuring a list on page 3 35 Point If you choose this mode one list step runs until the preset number of points is reached To set up the number of points sample count...

Page 157: ...ist from the front panel you only need to configure the arm source and a sample count for the trigger model For other parameters the instrument changes the settings according to the list configuration...

Page 158: ...nning time Depending on the hold time you select in the front panel list options there are two types of device actions during list running shown in the following figures Figure 73 Device action in tim...

Page 159: ...Supply Reference Manual Section 3 Functions and features 077085503 March 2019 3 45 Figure 74 Device action in point mode For list running time in Point mode Measurement Time Sample Count Sample Speed...

Page 160: ...the instrument generates a measure complete signal after each list step You can detect this signal in digital I O line 2 For details refer to Digital I O on page 3 19 Figure 75 Step mode triggering As...

Page 161: ...When using immediate triggering the instrument runs the next list step after sending the measure complete signal However when using external bus or manual triggering the instrument moves on to the nex...

Page 162: ...the instrument generates a measure complete signal after each list cycle You can detect this signal in digital I O line 2 For details refer to Digital I O on page 3 19 Figure 77 Sweep mode triggering...

Page 163: ...the instrument takes new reference and zero values for every reading This can slow down sweep operation Be aware that if you disable autozero measurements may drift and become erroneous For more infor...

Page 164: ...ating power rather than sourcing it The instrument can be forced into sink operation by an external source such as a battery or an energy storage device such as a capacitor For detail on the sink regi...

Page 165: ...e Optimizing either measurement accuracy or speed You can use resolution NPLC autozero and filter to optimize measurement accuracy and speed You can configure the following parameters to optimize for...

Page 166: ...1 s Source delay state On 5 5 Filter count 10 Filter window 0 01 State Off Moderate reading rates Environmental 50 60 Hz ambient noise can impact readings Reduced display resolution 4 5 0 002 Autozero...

Page 167: ...n Where n is 4 4 5 digit resolution 5 5 5 digit resolution 6 6 5 digit resolution NPLC You can adjust the amount of time that the input signal is measured Adjustments to the amount of time affect the...

Page 168: ...MENU key 3 Under Measure select Settings 4 Next to NPLC select the number The NPLC window is displayed 5 Enter the value and press the ENTER key Setting speed using SCPI commands To set the NPLCs for...

Page 169: ...s are disabled the instrument speed per reading increases However the instrument may gradually drift out of specification Measurement function With autozero enabled the number of customer and internal...

Page 170: ...ed digits You can set the number of digits that are displayed for measurement readings on the front panel You can display 4 5 5 5 or 6 5 digits The default is 6 5 The number of displayed digits does n...

Page 171: ...mple rate but the lower the noise error Trade offs between speed and noise are normally required to tailor the instrument settings to your measurement application If you create test algorithms and you...

Page 172: ...mains within the selected window the measurements continue to be placed in the stack If the reading changes to a value outside the window the filter resets and starts processing again with a new initi...

Page 173: ...and do not affect voltage measurements Setting up the averaging filter Using the front panel 1 Select the measurement function The filter will be applied to this function For more information you can...

Page 174: ...peration is enabled the CALC indicator on the home screen is illuminated Using SCPI commands To set number of measurements to be averaged for current measurements SENS CURR AVER COUN n SENS CONC AVER...

Page 175: ...ath operations only apply to current measurements and do not affect voltage measurements mx b The mx b math operation lets you manipulate normal display readings x mathematically based on the followin...

Page 176: ...elect one alpha character for the units of mx b operation Once m b and units are set up you can enable and disable the math operation from the home screen On home screen 2 press the Calculate soft key...

Page 177: ...ght of the measured value is displayed A relative offset value is saved for each function If you change the measurement function the relative offset value is changed to the setting for that measuremen...

Page 178: ...ion on page 2 74 2 Press the Next soft key to go to soft key menu 2 3 Under Calculate in the soft key menu select Set and press Enter 4 Press the soft key below Rel The REL indicator to the right of t...

Page 179: ...tion VOLTage SENSe VOLTage REFerence ACQuire SENSe VOLTage REFerence STATe ON To acquire a relative offset value for another function replace VOLTage with CURRent or CONCurrent Displayed measurements...

Page 180: ...Section 4 Measurement optimization Series 2280 Precision DC Power Supply Reference Manual 4 16 077085503 March 2019 Figure 82 Data flow...

Page 181: ...1 Press the MENU key 2 Under Measure select Math 3 Select the button next to Buffer Data Type and press Enter 4 Select Reading or CALC The Reading option selects readings before any math calculations...

Page 182: ...default instrument configuration Equipment required One Series 2280 Power Supply 1 k resistor Two banana cables Set up remote communications You can run this application from the front panel or any of...

Page 183: ...ge and current limit on the front panel 1 Press the HOME key The home screen is displayed 2 Press the V Set soft key The editing window is displayed at the bottom 3 Set the voltage to 5 V Enter 5 usin...

Page 184: ...r Supply Reference Manual Section 5 Application examples 077085503 March 2019 5 3 Figure 84 Voltage and current readback To set the voltage and current limit send the following SCPI commands RST VOLT...

Page 185: ...1 k resistor Two banana cables Set up remote communications You can run this application from the front panel or any of the supported communication interfaces for the instrument GPIB USB or ethernet T...

Page 186: ...ncrement the points display until it reads 10 5 Select the Voltage box in the point 1 row Press ENTER 6 Make the value 1 V and press ENTER 7 Select the Current box in the point 1 row Press ENTER 8 Mak...

Page 187: ...vigation control or the soft keys Press ENTER 3 Select the button next to Sample Count and press the ENTER key 4 Set the sample count to 10 5 Press the HOME key 6 Press the Next soft key twice to navi...

Page 188: ...erform a fast current load measurement The following example demonstrates how to configure the power supply to perform a fast current measurement initiated by an external trigger on digital line 1 Equ...

Page 189: ...nel AFG for example AFG3102C or equivalent to generate two synchronous pulse signals One signal is used to control the on and off state of an nMOSFET The other is used as the external triggering signa...

Page 190: ...ction 5 Application examples 077085503 March 2019 5 9 Figure 89 Fast current measurements setup Connect the digital I O pin 1 and pin 9 with the AFG output channel For details on digital I O refer to...

Page 191: ...ect Off 9 Select the button next to NPLC and press the ENTER key The number of power line cycles NPLC dialog box is displayed 10 Set the NPLC to 0 01 11 Connect the external trigger signal to digital...

Page 192: ...on the output To view the current measurements on the front panel 1 Press the MENU key 2 Under Views select Graph You can view the current measurements Figure 91 Graph view of load current When the re...

Page 193: ...current The green waveform shows the changes of load current and the yellow waveform shows the pulse output Figure 92 Oscilloscope plot To perform a fast current load measurement using SCPI commands...

Page 194: ...ommand words that are structured to create command messages The command words are separated by colons For example the command words used to enable an average filter are SENSe CONCurrent AVERage STATe...

Page 195: ...e order that they are presented in the command message An invalid command generates an error message and is not executed Valid commands that precede an invalid command in a command message are execute...

Page 196: ...you can set defaultParameter for the command SENSe CONCurrent NPLCycles defaultParameter to the minimum maximum or default value To set NPLC to the minimum value you can send either of these commands...

Page 197: ...ation that you can use to replace state is defined in the Usage section of the command description For this example the usage is state OFF or 0 Disable the beeper ON or 1 Enable the beeper For this ex...

Page 198: ...you can use to control your instrument Each command description is broken into several standard subsections The figure below shows an example of a command description Figure 93 SCPI command descriptio...

Page 199: ...s or actions that have a direct effect on the instrument command Recall settings Also known as Recall setup Reload setting from a previous saved setup RCL 1 5 or from the front panel Instrument reset...

Page 200: ...mand usage Shows how the parts of the command should be organized 2 User supplied parameters Indicated by angle brackets Some commands have optional parameters Optional parameters are presented on sep...

Page 201: ...I command description example 1 Example code that you can copy from this table and paste into your own application Examples are generally shown using the short forms of the commands 2 Description of t...

Page 202: ...although these commands are essentially the same as those defined by the IEEE Std 488 2 standard the Series 2280 does not strictly conform to that standard The general remote interface commands are co...

Page 203: ...clear the event registers and queues It performs the following actions Clear the Standard Event Status Register and Status Byte Register Clear the event register of Questionable Event Questionable In...

Page 204: ...esponding bit in the Standard Event Status Register is set on the ESB bit of the Status Byte Register is set To set a bit send the constant or the value of the bit as the n parameter When 0 zero is re...

Page 205: ...le ESR Query the contents of the Standard Event Status Register SESR Example output 145 This output indicates that the SESR contains the binary value 10010001 Also see ESE on page 7 3 Status model on...

Page 206: ...ot applicable Not applicable Not applicable Usage OPC OPC Details When the OPC command is sent the OPC bit bit 0 in the Status Event Status Register is set after all pending command operations have be...

Page 207: ...y the setting by sending the language query Output SCPI The SCPI command set is in use Also see None RCL This command returns the instrument to the setup that was saved with the SAV command Type Affec...

Page 208: ...lues on page 2 88 SAV This command saves the present instrument settings as a user saved setup Type Affected by Where saved Default value Command only Not applicable Nonvolatile memory Not applicable...

Page 209: ...to clear all bits To query the Status Request Enable Register send the SRE command The instrument returns a decimal value that corresponds to the binary weighted sum of all of the bits set in the reg...

Page 210: ...to generate a trigger event Using TRG has the same effect as a group execute trigger GET Use the TRG command as an event to control operation The instrument reacts to this trigger if BUS is the progra...

Page 211: ...previous overlapped commands are finished Type Affected by Where saved Default value Command only Not applicable Not applicable Not applicable Usage WAI Details There are two types of instrument comma...

Page 212: ...tion subsystem on page 7 34 OPC on page 7 5 TRG on page 7 9 ABORt n This command stops all trigger model commands on the instrument Type Affected by Where saved Default value Command only Not applicab...

Page 213: ...ies Concurrent CONCurrent DC Current CURRent DC Voltage VOLTage DC range The range value Current range and concurrent range 10 mA range 0 01 100 mA range 0 1 1 A range 1 10 A range 10 Voltage range Mo...

Page 214: ...ost processed reading This command does not trigger a measurement It simply requests the last available reading If you send this command more than once and there are no new readings it will return the...

Page 215: ...of the elements The options for item list are described in the following table Element Description Example output READing The measurement reading based on the measurement function 8 034562E 03 SOURce...

Page 216: ...is 1 Details This command is used to bypass the control source of Arm layer or Trigger layer For details refer to Trigger model on page 3 25 Example Bypass the control source of the arm layer RST INIT...

Page 217: ...lue is 1 function The measurement function to which this setting applies Concurrent CONCurrent DC Current CURRent DC Voltage VOLTage DC range The range value Current range and concurrent range 10 mA r...

Page 218: ...ommand is sent the following commands execute in the following order CONFigure n function READ n When CONFigure is executed the MEASure parameters range and resolution are executed and the instrument...

Page 219: ...Channel number For single channel instruments the value is 1 Details When this command is sent the following commands execute in the order they are presented ABORt INITiate FETCh When this command is...

Page 220: ...e Affected by Where saved Default value Command and query Recall settings Instrument reset Power cycle Save settings 1 Usage ARM SEQuence n COUNt count ARM SEQuence n COUNt ARM SEQuence n COUNt DEFaul...

Page 221: ...nce n SOURce source ARM SEQuence n SOURce n Channel number For single channel instruments the value is 1 source The trigger source for the arm layer Immediate triggering no delay or gating in arm dete...

Page 222: ...o which this setting applies Concurrent CONCurrent DC Current CURRent DC Voltage VOLTage DC name The name of the math operation y mx b MXB channel The channel number default value is CH1 Channel 1 CH1...

Page 223: ...ction The measurement function to which this setting applies Concurrent CONCurrent DC Current CURRent DC Voltage VOLTage DC n The offset for the y mx b operation the valid range is 1e6 to 1e6 channel...

Page 224: ...on page 7 26 CALCulate 1 function KMATh MMFactor This command specifies the scale factor for the y mx b math operation Type Affected by Where saved Default value Command and query Recall settings Ins...

Page 225: ...fset this is the measurement with relative offset applied b is the user defined constant for the offset factor Example CALC VOLT FORM MXB CALC VOLT KMAT MMF 0 80 CALC VOLT KMAT MBF 50 CALC VOLT KMAT M...

Page 226: ...DC string The units for the mx b calculation this parameter must be one character enclosed in single or double quotes It can be any letter of the alphabet channel The channel number default value is...

Page 227: ...peration ON or 1 Disable math operation OFF or 0 channel The channel number default value is CH1 Channel 1 CH1 Channel 2 CH2 Details When this command is set to on the math operation specified by the...

Page 228: ...calculation results of statistics You can get the results in the following order Minimum MINimum Maximum MAXimum Mean MEAN Standard deviation SDEViation Peak to peak PKPK If the specified statistics...

Page 229: ...MIN MAX MEAN PKPK and SDEV 5 986128E 00V 5 987489E 00V 5 986298E 00V 1 360 893E 03V 4 204334E 04V CALC2 DATA returns reading and units for MAX and SDEV 5 987489E 00V 4 204334E 04V Also see CALCulate2...

Page 230: ...T CALC2 FORM ELEM READ UNIT TST RNUM CALC2 FORM MIN MAX CALC2 IMM CALC2 FORM MIN MAX MEAN PKPK SDEV CALC2 IMM CALC2 FORM MAX SDEV CALC2 DATA Before the calculation start the trigger model to take 10 r...

Page 231: ...itemList CALCulate2 FORMat ELEMents itemList channel CALCulate2 FORMat ELEMents CALCulate2 FORMat ELEMents channel itemList The available data elements Voltage and current reading READing Reading unit...

Page 232: ...units for MAX and SDEV 5 987489E 00V 4 204334E 04V Also see CALCulate2 FORMat on page 7 28 CALCulate2 IMMediate on page 7 32 CALCulate2 STATe on page 7 34 CALCulate2 FUNCtion This command specifies w...

Page 233: ...5 986128E 00V 5 987489E 00V 5 986298E 00V 1 360 893E 03V 4 204334E 04V CALC2 DATA returns reading and units for MAX and SDEV 5 987489E 00V 4 204334E 04V Also see CALCulate2 FORMat on page 7 28 CALCul...

Page 234: ...RST TRAC CLE TRIG COUN 10 VOLT 6 OUTP ON INIT OPC CALC2 STATE ON CALC2 FUNC VOLT CALC2 FORM ELEM READ UNIT TST RNUM CALC2 FORM MIN MAX CALC2 IMM CALC2 FORM MIN MAX MEAN PKPK SDEV CALC2 IMM CALC2 FORM...

Page 235: ...G COUN 10 VOLT 6 OUTP ON INIT OPC CALC2 STATE ON CALC2 FUNC VOLT CALC2 FORM ELEM READ UNIT TST RNUM CALC2 FORM MIN MAX CALC2 IMM CALC2 FORM MIN MAX MEAN PKPK SDEV CALC2 IMM CALC2 FORM MAX SDEV CALC2 D...

Page 236: ...cted CANCel This command cancels the calibration procedures and drops the new constants Type Affected by Where saved Default value Command only Not applicable Not applicable Not applicable Usage CALib...

Page 237: ...using the following command CAL PROT STAT ON password Example CAL PROT CODE 12345678 Change the calibration password to 12345678 Also see CALibration PROTected STATe on page 7 44 CALibration PROTected...

Page 238: ...le Nonvolatile memory Not applicable Usage CALibration PROTected DATA Details For details refer to Calibration constants on page C 25 Example CAL PROT DATA Return the calibration constants in order 4...

Page 239: ...Default value Command and query Not applicable Nonvolatile memory Not applicable Usage CALibration PROTected DATE year month day CALibration PROTected DATE year Year must be more than 1970 month Mont...

Page 240: ...DC n STEP6 CALibration PROTected DC n STEP7 CALibration PROTected DC n STEP8 n Channel number For single channel instruments the value is 1 step The following steps represent the entire calibration p...

Page 241: ...esistance readings from the external DMM OPC Wait until step 4 finishes When finished this command returns 1 CAL PROT STEP5 Start current ADC zero point calibration on the 10 A range CAL PROT STEP5 DA...

Page 242: ...esistance CALibration PROTected DC n STEP6 DATA CALibration PROTected DC n STEP7 DATA voltage resistance CALibration PROTected DC n STEP8 DATA n Channel number For single channel instruments the value...

Page 243: ...s When finished this command returns 1 CAL PROT STEP5 Start current ADC zero point calibration on the 10 A range CAL PROT STEP5 DATA 0 00298 0 0496 Enter the voltage and resistance readings from the e...

Page 244: ...on procedure has been completed Type Affected by Where saved Default value Command only Not applicable Nonvolatile memory Not applicable Usage CALibration PROTected SAVE Details If the instrument exit...

Page 245: ...The password for calibration The maximum length is 8 characters Not case sensitive Details Use this command to enable the calibration mode After enabled you can configure and control calibration oper...

Page 246: ...ion The pin state see Details for values Details Set function to one of the values shown in the following table Value Description AUTO Automatically specify the pin state This function only applies to...

Page 247: ...pplicable Not applicable Usage DIGital LINE n MANual INPut DATA n The digital I O line 1 to 6 Details This command queries the manual input digital I O line If the line is not assigned to manual input...

Page 248: ...nd query Not applicable Nonvolatile memory ON50 Usage DISPlay BRIGhtness brightness DISPlay BRIGhtness DISPlay BRIGhtness DEFault DISPlay BRIGhtness MINimum DISPlay BRIGhtness MAXimum brightness The b...

Page 249: ...Where saved Default value Command only Not applicable Not applicable Not applicable Usage DISPlay CLEar channel channel The channel number default value is CH1 Channel 1 CH1 Channel 2 CH2 Details This...

Page 250: ...e front panel Type Affected by Where saved Default value Command only Power cycle Not applicable Not applicable Usage DISPlay SCREen screenName screenName The screen is displayed Home screen HOME Grap...

Page 251: ...24 characters channel The channel number default value is CH1 Channel 1 CH1 Channel 2 CH2 Details These commands define text messages for the OUTPUT view screen If you enter too many characters the i...

Page 252: ...e n CONTinuous n Channel number For single channel instruments the value is 1 state Disable continuous triggering OFF or 0 Enable continuous triggering ON or 1 Details With continuous initiation enabl...

Page 253: ...external USB flash drive MMEMory LOAD SETup This command recalls the specified setup from the external USB flash drive to the instrument Type Affected by Where saved Default value Command only Not app...

Page 254: ...applicable Not applicable Not applicable Usage MMEMory SAVE SETup fileName fileName A string that contains a name for the saved setup maximum 8 characters Detail This command allows you to save the p...

Page 255: ...channel OUTPut DELay FALLing OUTPut DELay FALLing channel OUTPut DELay FALLing DEFault OUTPut DELay FALLing DEFault channel OUTPut DELay FALLing MINimum OUTPut DELay FALLing MINimum channel OUTPut DEL...

Page 256: ...Sing channel OUTPut DELay RISing DEFault OUTPut DELay RISing DEFault channel OUTPut DELay RISing MINimum OUTPut DELay RISing MINimum channel OUTPut DELay RISing MAXimum OUTPut DELay RISing MAXimum cha...

Page 257: ...ettings 0 OFF Usage OUTPut DELay STATe state OUTPut DELay STATe state Disable output delay OFF or 0 Enable output delay ON or 1 Details When output delay is set to ON the instrument waits the specifie...

Page 258: ...Usage OUTPut PROTection CLEar OUTPut PROTection CLEar channel channel The channel number default value is CH1 Channel 1 CH1 Channel 2 CH2 Details Clears the protection status if an overvoltage overcur...

Page 259: ...l The channel number default value is CH1 Channel 1 CH1 Channel 2 CH2 Channel 2 CH2 The Details There are six types of responses including OCP indicates over current protection occurred OVP indicates...

Page 260: ...query Recall settings Instrument reset Power cycle Save settings 0 OFF Usage OUTPut STATe state OUTPut STATe state channel OUTPut STATe state Turn source off OFF or 0 Turn source on ON or 1 Disable so...

Page 261: ...ncurrent current or voltage Type Affected by Where saved Default value Command and query Recall settings Instrument reset Power cycle Save settings CONC Usage SENSe n FUNCtion name SENSe n FUNCtion n...

Page 262: ...m SENSe n function AVERage COUNt MAXimum n Channel number For single channel instruments the value is 1 function The measurement function to which this setting applies Concurrent CONCurrent DC Current...

Page 263: ...to which this setting applies Concurrent CONCurrent DC Current CURRent DC Voltage VOLTage DC state The filter status set to one of the following values Disable the averaging filter OFF or 0 Enable the...

Page 264: ...o one of the following values Moving filter MOVing Details This command selects the type of averaging filter Moving average When the moving average filter is selected the measurements are added to the...

Page 265: ...channel instruments the value is 1 function The measurement function to which this setting applies Concurrent CONCurrent DC Current CURRent DC Voltage VOLTage DC value The filter window 0 01 to 100 Th...

Page 266: ...is setting applies Concurrent CONCurrent DC Current CURRent DC Voltage VOLTage DC value 4 5 digit resolution 4 5 5 digit resolution 5 6 5 digit resolution 6 Details This command affects how the readin...

Page 267: ...ine cycles for each measurement 0 002 to 12 for 50 Hz 0 002 to 15 for 60 Hz Details This command sets the amount of time that the input signal is measured The amount of time is specified in parameters...

Page 268: ...CURRent DC RANGe DEFault SENSe n CURRent DC RANGe MINimum SENSe n CURRent DC RANGe MAXimum SENSe n VOLTage DC RANGe range SENSe n VOLTage DC RANGe n Channel number For single channel instruments the v...

Page 269: ...ting takes effect immediately When you assign a specific value to this command the instrument is set on a fixed range that is large enough to measure the assigned value The instrument selects the best...

Page 270: ...this setting applies Concurrent CONCurrent DC Current CURRent DC state Set the measurement range manually OFF or 0 Set the measurement range automatically ON or 1 Details This command determines how t...

Page 271: ...oncurrent and current 6 1 to 6 1 A for Model 2280S 32 6 3 3 to 3 3 A for Model 2280S 60 3 Voltage 32 to 32 V for Model 2280S 32 6 60 to 60 V for Model 2280S 60 3 Details This command specifies the rel...

Page 272: ...ons even if they are set It is as if these settings are disabled After executing this command you can use the following command to see the last relative level value that was acquired or that was set S...

Page 273: ...e VOLTage DC state Disable the relative offset OFF or 0 Enable the relative offset ON or 1 Details This attribute enables or disables relative measurements When relative measurements are enabled all s...

Page 274: ...ffects how the reading for a measurement is displayed on the front panel of the instrument It also affects the accuracy or speed of measurements When a resolution is selected the number of power line...

Page 275: ...Lay value SOURce n DELay n Channel number For single channel instruments the value is 1 value Delay 0 to 99 s Resolution 0 00001 s Details This command sets a delay for the source After the programmed...

Page 276: ...reset Power cycle Save settings 1 ON Usage SOURce n DELay STATe state SOURce n DELay STATe n Channel number For single channel instruments the value is 1 state Disable the source delay OFF or 0 Enabl...

Page 277: ...Rce n CURRent PROTection LEVel SOURce n CURRent PROTection LEVel DEFault SOURce n CURRent PROTection LEVel MINimum SOURce n CURRent PROTection LEVel MAXimum n Channel number For single channel instrum...

Page 278: ...nt LEVel IMMediate AMPLitude value SOURce n CURRent LEVel IMMediate AMPLitude SOURce n CURRent LEVel IMMediate AMPLitude DEFault SOURce n CURRent LEVel IMMediate AMPLitude MINimum SOURce n CURRent LEV...

Page 279: ...t AMPLitude SOURce n VOLTage LIMit AMPLitude DEFault SOURce n VOLTage LIMit AMPLitude MINimum SOURce n VOLTage LIMit AMPLitude MAXimum n Channel number For single channel instruments the value is 1 va...

Page 280: ...age SLEW RISing SOURce n VOLTage SLEW RISing DEFault SOURce n VOLTage SLEW RISing MINimum SOURce n VOLTage SLEW RISing MAXimum n Channel number For single channel instruments the value is 1 value The...

Page 281: ...e SLEW FALLing SOURce n VOLTage SLEW FALLing DEFault SOURce n VOLTage SLEW FALLing MINimum SOURce n VOLTage SLEW FALLing MAXimum n Channel number For single channel instruments the value is 1 value Th...

Page 282: ...The setting values delimited by commas the maximum length of a string is 2048 Details This command defines a list of up to 99 values for a specified list Creating a list with more than 99 step points...

Page 283: ...cted by Where saved Default value Command only Instrument reset Nonvolatile memory Not applicable Usage SOURce n LIST listNumber element APPend string n Channel number For single channel instruments t...

Page 284: ...ge 7 81 SOURce n LIST SAVE INTernal on page 7 90 SOURce n LIST listNumber element POINts This command queries the length of the specified list Type Affected by Where saved Default value Query only Ins...

Page 285: ...his command allows you to end a specified list with the last source value or zero value Example LIST END ZERO ON List ends with the 0 V and 0 1000 A Also see None SOURce n LIST HTIMe This command dete...

Page 286: ...icable Usage SOURce n LIST LOAD USB listNumber fileName n Channel number For single channel instruments the value is 1 listNumber An integer from 1 to 9 that represents the specified location where th...

Page 287: ...lue is 1 type The time you can choose to generate STEP After each list step the instrument will generate a measure complete pulse you can detect this pulse on digital I O line 2 for more information r...

Page 288: ...is used Sending the command LIST RCL returns the active list number Example 1 Sweep list with BUS trigger hold time type TIME RST Define list LIST1 VOLT 1 2 3 4 5 LIST1 CURR 0 5 1 1 5 2 2 5 LIST1 DWEL...

Page 289: ...t mode Start the trigger model Run the lists Dwell time is ignored in this mode The lists run until the preset points are logged All the readings will be stored in data buffer Example 3 Step list with...

Page 290: ...the voltage list 1 with 2 points Program the current list 1 with 2 points Program the dwell list 1 with 2 points Save list 1 to nonvolatile memory Recall list 1 Select STEP mode Set hold time type to...

Page 291: ...ror 202 List lengths not equivalent is generated If a list already exists for the specified list number the new list overwrites the existing list Example LIST1 VOLT 1 2 LIST1 CURR 0 5 1 LIST1 DWEL 0 5...

Page 292: ...so see SOURce n LIST LOAD USB on page 7 85 SOURce n LIST STATe This command enables or disables the list mode Type Affected by Where saved Default value Command and query Recall settings Instrument re...

Page 293: ...ger model Run the lists Hold time is the sum of the dwell time of 5 points All the readings will be stored in data buffer Example 2 Sweep list with BUS trigger hold time type POINt RST Define list LIS...

Page 294: ...del Program the voltage list 1 with 2 points Program the current list 1 with 2 points Program the dwell list 1 with 2 points Save list 1 to nonvolatile memory Recall list 1 Select STEP mode Set hold t...

Page 295: ...ints Program the dwell list 1 with 2 points Save list 1 to nonvolatile memory Recall list 1 Select STEP mode Set hold time type to POINt Select the BUS arm source Set Arm count to list points Set trig...

Page 296: ...that corresponds to the binary weighted sum of all bits set in the register For details see Measurement Event Register on page D 17 Also see None STATus MEASurement ENABle This command sets or reads t...

Page 297: ...ement INSTrument EVENt This command reads and clears the Measurement Instrument Event Register of the status model Type Affected by Where saved Default value Query only Not applicable Not applicable N...

Page 298: ...Register Details This command sets or reads the contents of the enable register of the Measurement Instrument Event Register When one of these bits is set and the corresponding bit in the Measurement...

Page 299: ...ble Not applicable Not applicable Usage STATus MEASurement INSTrument ISUMmary EVENt Details This attribute reads the Measurement Instrument Summary Event Register of the status model and clears the r...

Page 300: ...Enable Register Details This command sets or reads the contents of the enable register of the Measurement Instrument Summary Event Register MISER When one of these bits is set and the corresponding b...

Page 301: ...alue of a register see Measurement Instrument Summary Event Register on page D 19 Example STAT MEAS INST ISUM COND Returns the contents of the Measurement Instrument Summary Condition Register of the...

Page 302: ...e n with b When sending hexadecimal values preface n with h No preface is needed when sending decimal values Example STAT OPER ENAB b0010000000000000 Sets the Operation Status Enable Register using a...

Page 303: ...ion Instrument Enable Register Details This command sets or reads the contents of the Enable register of the Operation Instrument Event Register When one of these bits is set and the corresponding bit...

Page 304: ...icable Not applicable Not applicable Usage STATus OPERation INSTrument ISUMmary EVENt Details This attribute reads the Operation Instrument Summary Event Register of the status model and clears the re...

Page 305: ...ble Register Details This command sets or reads the contents of the enable register of the Operation Instrument Summary Event Register OISER When one of these bits is set and the corresponding bit in...

Page 306: ...COND Returns the contents of the Operation Instrument Summary Condition Register of the status model Also see Operation Instrument Summary Event Register on page D 13 STATus PRESet This command resets...

Page 307: ...t value Query only Not applicable Not applicable Not applicable Usage STATus QUEStionable EVENt Details This command reads the Questionable Event Register of the status model and then clears the regis...

Page 308: ...eface n with b When sending hexadecimal values preface n with h No preface is needed when sending decimal values Example STAT QUES ENAB b0010000000000000 Sets the operation Status Enable Register usin...

Page 309: ...le Register Details This command sets or reads the contents of the enable register of the Questionable Instrument Event Register When one of these bits is set and the corresponding bit in the Question...

Page 310: ...ster of the status model Also see Questionable Instrument Summary Event Register on page D 16 STATus QUEStionable INSTrument ISUMmary ENABle This command sets or reads the contents of the Questionable...

Page 311: ...page D 16 STATus QUEStionable INSTrument ISUMmary CONDition This command reads the Questionable Instrument Summary Condition Register of the status model Type Affected by Where saved Default value Qu...

Page 312: ...ument reset Power cycle Save settings 1 ON Usage SYSTem AZERo n STATe state SYSTem AZERo n STATe n Channel number For single channel instruments the value is 1 state Disable autozero OFF or 0 Enable a...

Page 313: ...value Command and query Recall settings Instrument reset Power cycle Save settings 1 ON Usage SYSTem BEEPer ERRor STATe state SYSTem BEEPer ERRor STATe state Disable the beeper OFF or 0 Enable the be...

Page 314: ...e all the others are blocked When this command is sent by one of the interfaces the present active interface is blocked and the interface that sends SYST COMM ABOR becomes active Before you use this c...

Page 315: ...cifies how the LAN IP address and other LAN settings are assigned If automatic configuration is selected the instrument automatically determines the LAN information When the method is automatic the in...

Page 316: ...n The string includes colons that separate the address octets Example SYSTem COMMunication LAN MACaddress Returns the MAC address For example you might see 00 60 1A 00 00 57 Also see None SYSTem DATE...

Page 317: ...FIFO register that can hold up to 64 messages This command returns the next entry from the error queue Errors are cleared after you read them If there are no entries in the error queue the following...

Page 318: ...so clears the returned error SYSTem ERRor Example SYST ERR CODE Returns the error number of the last error in the error queue For example if error 222 Parameter data out of range error occurred the ou...

Page 319: ...log csv Also see SYSTem ERRor CLEar on page 7 116 SYSTem GPIB ADDRess This command sets the GPIB address Type Affected by Where saved Default value Command and query Not applicable Nonvolatile memory...

Page 320: ...mmunication on page 2 45 SYSTem KCLick This command allows you to enable or disable the key click sound Type Affected by Where saved Default value Command and query Recall settings Instrument reset Po...

Page 321: ...nstrument is in remote operation all the front panel keys except the LOCAL and OUTPUT keys are locked out When this command is sent the instrument restores operation of the front panel controls Howeve...

Page 322: ...the line frequency Also see None SYSTem PASSword LOCK This command sets a remote interface to lock mode Type Affected by Where saved Default value Command only Not applicable Not applicable admin Usa...

Page 323: ...password protection Also see SYSTem PASSword LOCK on page 7 121 SYSTem PASSword NEW on page 7 122 SYSTem PASSword UNLock on page 7 123 SYSTem PASSword NEW This command sets a new password for the rem...

Page 324: ...e 7 122 SYSTem PASSword UNLock on page 7 123 SYSTem PASSword UNLock This command enables a remote interface Type Affected by Where saved Default value Command only Not applicable Not applicable admin...

Page 325: ...Also see SAV on page 7 7 SYSTem PRESet This command returns the instrument to the factory default conditions and erases all user data stored in nonvolatile memory Type Affected by Where saved Default...

Page 326: ...formation Also see RST on page 7 7 Reset default values on page 2 88 SYSTem RWLock This command locks out front panel controls Type Affected by Where saved Default value Command only Not applicable No...

Page 327: ...format 0 to 23 minute Minute 0 to 60 second Second 0 to 60 Details The query command returns the present timestamp in the format hour minute second Example SYST TIME 5 51 30 Set the system time to 05...

Page 328: ...CLE Clear the data buffer Also see Clearing buffer on page 3 18 DATA n CLEar AUTO This command enables or disables the autoclear feature for the buffer Type Affected by Where saved Default value Comma...

Page 329: ...e all readings that are stored in the buffer You can send this command even if the instrument is still storing readings When DATA DATA is sent it will return the readings stored up to that point in ti...

Page 330: ...timestamp for the data point 07 01 2013 19 21 36 2556 RELative The relative time when the data point was measured formatted in seconds 4 430876E 00s RSTamp The relative time when the data point was me...

Page 331: ...T and RELative see Details for a list of options Details The start parameter specifies the first stored reading to return The first stored reading in the buffer is 1 The end parameter specifies the la...

Page 332: ...2556 TSTamp The timestamp for the data point 07 01 2013 19 21 36 2556 RELative The relative time when the data point was measured formatted in seconds 4 430876E 00s RSTamp The relative timestamp when...

Page 333: ...el number For single channel instruments the value is 1 name Select the source of readings Store the readings before the math calculation SENSe Store the readings after the math calculation CALCulate...

Page 334: ...dings buffer size is stored buffer operation is disabled Fill continuous ALWays After the specified number of readings is stored operation wraps back to the first buffer location and overwrites the pr...

Page 335: ...single channel instruments the value is 1 newSize The new size for the buffer 2 to 2500 Details Use this command to read the number of measurements that a buffer can store Example DATA POIN Query the...

Page 336: ...mand enables or disables the autoclear feature for the buffer Type Affected by Where saved Default value Command and query Power cycle Not applicable 1 ON Usage TRACe n CLEar AUTO state TRACe n CLEar...

Page 337: ...instrument is still storing readings When TRACe DATA is sent it will return the readings stored up to that point in time Subsequent TRACe DATA commands will not retrieve readings already returned Howe...

Page 338: ...2013 19 21 36 2556 RELative The relative time when the data point was measured formatted in seconds 4 430876E 00s RSTamp The relative time when the data point was measured 12 23 32 2349 RNUMber The re...

Page 339: ...T and RELative see Details for a list of options Details The start parameter specifies the first stored reading to return The first stored reading in the buffer is 1 The end parameter specifies the la...

Page 340: ...2556 TSTamp The timestamp for the data point 07 01 2013 19 21 36 2556 RELative The relative time when the data point was measured formatted in seconds 4 430876E 00s RSTamp The relative timestamp when...

Page 341: ...nel number For single channel instruments the value is 1 name Select the source of readings Store the readings before the math calculation SENSe Store the readings after the math calculation CALCulate...

Page 342: ...adings buffer size are stored buffer operation is disabled Fill continuous ALWays after the specified number of readings are stored operation wraps back to the first buffer location and overwrites the...

Page 343: ...or single channel instruments the value is 1 newSize The new size for the buffer 2 to 2500 Details Use this command to read the number of measurements that a buffer can store Example TRAC POIN Query t...

Page 344: ...seconds are saved the default value TSTamp Relative time stamps in seconds are saved RELative Relative time stamps are saved RSTamp For details about time format see TRACe n DATA on page 7 136 start...

Page 345: ...value Also see TRACe n TRIGger CURRent STATe on page 7 145 TRACe n TRIGger CURRent LEVel on page 7 144 TRACe n TRIGger CURRent LEVel This command configures the current threshold value for the level t...

Page 346: ...determines whether the current level trigger function is enabled Type Affected by Where saved Default value Command and query Power cycle Not applicable 0 OFF Usage TRACe n TRIGger CURRent STATe stat...

Page 347: ...IG OCC Queries whether a level trigger has occurred If a level trigger has occurred the value of 1 will be returned Also see None TRACe n TRIGger OFFSet This command defines the number of points at wh...

Page 348: ...shold value Also see TRACe n TRIGger VOLTage STATe on page 7 148 TRACe n TRIGger VOLTage LEVel on page 7 147 TRACe n TRIGger VOLTage LEVel This command configures the voltage threshold for the level t...

Page 349: ...This command determines whether the voltage level trigger function is enabled Type Affected by Where saved Default value Command and query Power cycle Not applicable 0 OFF Usage TRACe n TRIGger VOLTag...

Page 350: ...Affected by Where saved Default value Command and query Recall settings Instrument reset Power cycle Save settings 1 Usage TRIGger SEQuence n COUNt count TRIGger SEQuence n COUNt TRIGger SEQuence n CO...

Page 351: ...settings 1 Usage TRIGger SEQuence n SAMPle COUNt count TRIGger SEQuence n SAMPle COUNt TRIGger SEQuence n SAMPle COUNt DEFault TRIGger SEQuence n SAMPle COUNt MINimum TRIGger SEQuence n SAMPle COUNt M...

Page 352: ...ttings IMM Usage TRIGger SEQuence n SOURce source TRIGger SEQuence n SOURce n Channel number For single channel instruments the value is 1 source The trigger source for trigger layer Immediate trigger...

Page 353: ...er reviewing this information please contact your local Keithley Instruments representative or call Keithley Instruments corporate headquarters toll free inside the U S and Canada only at 800 935 5595...

Page 354: ...is turned on 2 Verify the power line voltage settings Check that the line voltage selector switch on the rear panel is set to the proper value for your country 100 VAC 120 VAC or 220 VAC 240 VAC Chang...

Page 355: ...ing the setup procedure Verify that the network card of the computer is enabled Verify that the IP address of the instrument is compatible with the IP address on the computer Verify that the subnet ma...

Page 356: ...definite response 430 Query DEADLOCKED 420 Query UNTERMINATED 410 Query INTERRUPTED 405 Request control 404 Power fail 403 User request 402 Operation complete 401 Power on 400 Query event 363 Input bu...

Page 357: ...rectory full 254 Media full 253 Corrupt media 252 Missing media 251 Missing mass storage 250 Mass storage error 243 Hardware I O device error 242 Hardware configuration error 241 Hardware missing 240...

Page 358: ...alid block data 160 Block data error 158 String data not allowed 154 String too long 152 String data too long 151 Invalid string data 150 String data error 148 Character data not allowed 144 Character...

Page 359: ...save failed 107 Calibration data lost 108 Busy on current step wait until this step is completed 109 Not permitted with cal unlocked 110 Step1 Kmath error 111 Step1 V DAC zero DMM reading out of range...

Page 360: ...rforming cal from front panel List errors 200 List error 201 Too many list points 202 List lengths not equivalent 203 Assigning data to undefined list 204 Attempt to run an empty list 205 Save list fa...

Page 361: ...510 Parameter error 511 Communication not permitted 520 No USB flash drive found 521 Cannot open file 522 Load file from USB flash drive failed 523 Save file to USB flash drive failed 530 Attempt to c...

Page 362: ...The product documentation The Knowledge Center which contains the following handbooks The Low Level Measurements Handbook Precision DC Current Voltage and Resistance Measurements Switching Handbook A...

Page 363: ...if the fuse is damaged Disconnect the line cord at the rear panel and remove all test leads connected to the instrument before replacing a line fuse Failure to do so could expose the operator to hazar...

Page 364: ...k into the power module If the power line fuses continue to become damaged a circuit malfunction exists and must be corrected Return the instrument to Keithley Instruments for repair Upgrading the fir...

Page 365: ...rade or downgrade is in progress Wait until the instrument completes the procedure and shows the opening display From the front panel Do not turn off power or remove the USB flash drive until the upgr...

Page 366: ...ersonal injury or death Do not attempt to perform these procedures unless you are qualified to do so Since the Series 2280 series of instruments have overvoltage protection built in you should perform...

Page 367: ...age B 2 and use it to record the performance test results for your power supply Completion of the performance verification procedure does not update the stored time and date of the latest successful a...

Page 368: ...se DC voltage accuracy without remote sense DC voltage readback accuracy DC voltage line regulation DC voltage load regulation DC voltage detection DC current accuracy DC current readback accuracy 10...

Page 369: ...V Measured voltage V 0 test voltage 2280S 32 6 0 3 0 003 0 003 2280S 60 3 0 1 6 0 006 0 006 25 test voltage 2280S 32 6 8 3 7 9954 8 0046 2280S 60 3 15 1 6 14 991 15 009 50 test voltage 2280S 32 6 16 3...

Page 370: ...asured voltage V 0 test voltage 2280S 32 6 0 3 0 0045 0 0045 2280S 60 3 0 1 6 0 0068 0 0068 25 test voltage 2280S 32 6 8 3 7 9939 8 0061 2280S 60 3 15 1 6 14 9902 15 0098 50 test voltage 2280S 32 6 16...

Page 371: ...V Test current A Measured voltage V DUT readback V Absolute difference mV Maximum difference mV 0 test voltage 2280S 32 6 0 3 2 2280S 60 3 0 1 6 4 25 test voltage 2280S 32 6 8 3 3 6 2280S 60 3 15 1 6...

Page 372: ...voltage V Test current A Measured voltage V DUT readback V Absolute difference mV Maximum difference mV 0 test voltage 2280S 32 6 0 2 3 2280S 60 3 0 4 6 25 test voltage 2280S 32 6 8 2 4 6 2280S 60 3 1...

Page 373: ...ly Reference Manual Appendix B Verification 077085503 March 2019 B 7 DC voltage load regulation Model number Minimum V Nominal V Maximum V Nominal Minimum V Maximum Nominal V Largest V Maximum value V...

Page 374: ...Maximum V Measured voltage V 10 OVP setting 2280S 32 6 3 2 2 942 3 458 2280S 60 3 6 5 485 6 515 25 OVP setting 2280S 32 6 8 7 73 8 27 2280S 60 3 15 14 4625 15 5375 50 OVP setting 2280S 32 6 16 15 71 1...

Page 375: ...rrent A 0 test current 2280S 32 6 16 0 0 005 0 005 2280S 60 3 30 0 0 005 0 005 25 test current 2280S 32 6 16 1 5 1 49425 1 50575 2280S 60 3 30 0 8 0 7946 0 80504 50 test current 2280S 32 6 16 3 2 9935...

Page 376: ...ack accuracy on 10 A range Model number Test current A Measured current A DUT readback A Absolute difference mA Maximum difference mA 0 test current 2280S 32 6 0 0 25 2280S 60 3 0 0 25 25 test current...

Page 377: ...on 1 A range Model number Test current A Measured current A DUT readback A Absolute difference mA Maximum difference mA 0 test current 2280S 32 6 0 0 25 2280S 60 3 0 0 25 10 test current 2280S 32 6 0...

Page 378: ...range Model number Test current mA Measured current mA DUT readback mA Absolute difference mA Maximum difference A 0 test current 100 mA 2280S 32 6 0 10 2280S 60 3 0 10 10 test current 100 mA 2280S 3...

Page 379: ...nce mA Maximum difference A 0 test current 10 mA 2280S 32 6 0 10 2280S 60 3 0 10 10 test current 10 mA 2280S 32 6 1 10 5 2280S 60 3 1 10 5 50 test current 10 mA 2280S 32 6 5 12 5 2280S 60 3 5 12 5 100...

Page 380: ...ion Model number DUT voltage V Test current A Min A Nom A Max A Nom Min mA Max Nom mA Largest mA Max value A 2280S 32 6 16 6 0 00085 2280S 60 3 30 3 2 0 00052 DC current load regulation Model number M...

Page 381: ...P setting value A Minimum A Maximum A Measured current A 25 OCP setting 2280S 32 6 1 5 1 39625 1 60375 2280S 60 3 0 8 0 698 0 902 50 OCP setting 2280S 32 6 3 2 8925 3 1075 2280S 60 3 1 6 1 496 1 704 7...

Page 382: ...rrent A DUT voltage V Maximum mV Measured voltage mV 20 MHz voltage ripple RMS 2280S 32 6 3 32 1 2280S 60 3 1 6 60 2 20 MHz voltage ripple PKPK 2280S 32 6 3 32 5 2280S 60 3 1 6 60 7 Current noise at 2...

Page 383: ...cessary to partially test the DUT using an individual test a 20 minute warm up period is required for the individual test You must connect the DUT and the test equipment to the same AC power circuit C...

Page 384: ...tion wires 50 m precision shunt resistor 50 m precision shunt with 5 ppm at 25 C 4 ppm C temperature coefficient Isotek Corp RUG Z R050 0 1 TK1 5 precision shunt resistor 5 precision shunt with 25 ppm...

Page 385: ...her alternative is to use a fork lug between the DUT and the load and separate connections using fork lugs holding the wiring for one or both of the voltmeter and remote sense A third alternative is t...

Page 386: ...e DC voltage readback accuracy with remote sense on page B 5 table 13 Increase the DUT output voltage by 25 of the full scale output voltage 14 Repeat step 10 and step 11 until you complete testing at...

Page 387: ...3 Voltage accuracy and protection test setup Make sure the warm up criteria have been met as described in the Performance verification conditions To ensure accurate measurements the voltmeter must be...

Page 388: ...e Set to draw a constant current at the test current specified for the DUT in the DC voltage setting accuracy without remote sense on page B 4 table 3 Set the DUT to the full scale output current 4 Se...

Page 389: ...ng figure Figure 105 Voltage readback accuracy without remote sense test setup Make sure the warm up criteria have been met as described in the Performance verification conditions To ensure accurate m...

Page 390: ...ge 0 V 4 Turn the DUT output on 5 Enter the voltmeter reading in the DC voltage readback accuracy without remote sense on page B 6 table 6 Enter the DUT readback voltage in the DC voltage readback acc...

Page 391: ...on DC Power Supply Reference Manual Appendix B Verification 077085503 March 2019 B 25 Check DC voltage line regulation Set up the equipment as shown in the following figure Figure 106 Voltage line reg...

Page 392: ...V ensuring that voltage is being read 3 Set the electronic load as follows Set to constant current CC mode Set to draw the specified test current Model Test current 2280S 32 6 3 A 2280S 60 3 1 6 A 4 S...

Page 393: ...ge line regulation on page B 7 table Check DC voltage load regulation This procedure uses the same test setup as the previous procedure see Check DC voltage setting accuracy without remote sense on pa...

Page 394: ...on page B 7 table 12 Enter the largest of the three values calculated in step 11 in the Largest column in the DC voltage load regulation on page B 7 table Check DC overvoltage protection This procedur...

Page 395: ...e output voltage and repeat step 5 through step 7 10 Set the OVP threshold to 50 of full scale output voltage and repeat step 5 through step 7 11 Set the OVP threshold to 75 of full scale output volta...

Page 396: ...ows Set to constant voltage Set to the specified voltage for your DUT see DC current accuracy on page B 9 3 Set the DUT to 0 of the full scale output current 4 Set the DUT to 25 of the full scale outp...

Page 397: ...es 2280 has the following ranges to verify 10 A 1 A 100 mA and 10 mA range Follow the procedures described below to check the current readback accuracy on 10 A and 1 A range For other ranges refer to...

Page 398: ...32 1 6 6 1 A 0 0 1 0 5 1 2280S 60 3 10 A 0 0 6 3 3 2 1 A 0 0 1 0 5 1 5 Turn the DUT output on 6 Enter the voltmeter reading R1 R2 in the DC current readback accuracy on page B 10 table 7 Enter the DU...

Page 399: ...ther ranges refer to Check DC current readback accuracy 10 A and 1 A ranges on page B 31 Set up the equipment as shown in the following figure Figure 109 Current readback accuracy on 100 mA and 10 mA...

Page 400: ...cy on page B 10 table 7 Enter the DUT current readout in the DC current readback accuracy on page B 10 table under the current readout column 8 Calculate the difference of the two measurements taken i...

Page 401: ...on DC Power Supply Reference Manual Appendix B Verification 077085503 March 2019 B 35 Check DC current line regulation Set up the equipment as shown in the following figure Figure 110 Series 2280 curr...

Page 402: ...llows Set to constant voltage Set to the specified voltage for your device under test DUT see DC current line regulation on page B 13 4 Set the device under test DUT to 0 of the full scale output volt...

Page 403: ...range to autorange Calculate the amperes instead of volts by multiplying the voltmeter reading result by 1 R 2 Set the electronic load as follows Set to constant voltage Set to the minimum test volta...

Page 404: ...c load as follows Set to constant voltage CV mode 3 Set the device under test DUT to 100 of the full scale output voltage 4 Set the overcurrent protection OCP threshold to 10 of full scale output curr...

Page 405: ...t DUT into your local line power from the mains 2 Plug the test oscilloscope into the same mains outlet as the DUT Some AC power sources create large amounts of high frequency noise on the power line...

Page 406: ...cilloscope as follows 1 mV division 1 M input resistance 20 MHz bandwidth limit AC coupled Autotrigger 1 ms div Set to measure Vp p and VRMS 6 Set the DUT to the 100 full scale output voltage 7 Set th...

Page 407: ...t fully reject Noise directly on the mains is typically better controlled Use the same mains outlet for both the DUT and test oscilloscope to avoid ground loops which may cause noise 3 Power on the DU...

Page 408: ...personnel only Do not attempt these procedures unless you are qualified to do so Some of these procedures may expose you to hazardous voltages that if contacted could cause personal injury or death Us...

Page 409: ...ified by the manufacturer Line power The Series 2280 requires a line voltage of 100 V 120 V 220 V or 240 V and a line frequency of 50 Hz or 60 Hz Before powering up the instrument properly set the 100...

Page 410: ...imeter 7 digits 90 day 5 C uncertainties see the following table See NOTE below Electronic load Constant current CC 0 001 A to 6 A Constant voltage CV 0 3 V to 60 V See NOTE below Resistor R Load 300...

Page 411: ...se the following procedure to prepare your shunts Step 1 Verify the 5 05 shunt Step 2 Verify the 0 05 shunt Step 1 You can use 5 and 0 05 precision shunt resistors in series instead of the 5 05 shunt...

Page 412: ...sing the following formula R0 05 V0 05 Rtotal Vtotal You need to connect the shunt with the power supply electronic load and digital multimeter For details see the following figures After you have mad...

Page 413: ...ion on communicating with the instrument The calibration instructions for the Series 2280 include the following procedures Voltage calibration Low current calibration on the 10 mA and 100 mA ranges Hi...

Page 414: ...to the Series 2280 For the DMM specifications see Required equipment on page C 3 Figure 115 Voltage calibration connections When you are using a binding post on the front panel to make a calibration...

Page 415: ...n connections For current calibration the following equipment is required Digital multimeter Precision shunt resistors Electronic load or resistor You can use either an electronic load or a resistor t...

Page 416: ...Series 2280 Precision DC Power Supply Reference Manual Appendix C Calibration and adjustment 077085503 March 2019 C 9 Figure 117 High current calibration connection using an electronic load...

Page 417: ...hour before performing the calibration 2 Press the MENU key 3 In the System Information menu select Calibrate The keypad is displayed 4 Enter the calibration password and select OK on the keypad The d...

Page 418: ...ing table Steps Maximum voltage Minimum voltage 1 1 15 V 0 05 V 2 58 25 V 54 25 V Step 1 1 Enter the measured result from the DMM 2 After entering the data the waiting window is displayed You need to...

Page 419: ...teps Maximum voltage Minimum voltage 3 15 150 mV 0 V 4 1 515 V 0 02 V For Model 2280S 60 3 the expected values are shown in the following table Steps Maximum voltage Minimum voltage 3 15 150 mV 0 V 4...

Page 420: ...the details on saving see Saving calibration constants from the front panel on page C 15 If you want to continue the calibration press the Next soft key High current calibration Connect the instrumen...

Page 421: ...load as shown in the following table Model Shunt Electronic load Resistor load 2280S 32 6 0 05 Constant current mode 1 5 V 0 06 A 5 2280S 60 3 0 05 Constant current mode 1 5 V 0 03 A 20 2 Enter the ex...

Page 422: ...window is displayed Step 8 1 Before starting this calibration step configure the shunt and load electronic load or resistor load as shown in the following table Model Shunt Electronic load Resistor lo...

Page 423: ...ielded IEEE 488 cable such as Keithley Instruments Model 7007 Use a standard LAN crossover cable to connect to the ethernet port Use a USB cable to connect to the USB port 2 Turn on the Series 2280 an...

Page 424: ...sages and error event codes For calibration error messages and codes refer to Error summary on page 8 3 For the Model 2280S 32 6 the expected value is shown in the following table Steps Maximum voltag...

Page 425: ...istor For details see Current calibration connections on page C 8 You need to perform the following steps to finish the low current calibration Steps 3 and 4 Current calibration on the 10 mA and 100 m...

Page 426: ...on PROTected STEP3 DATA voltage resistance 4 Send the following command to query the operation status OPC After all of the operations are completed the instrument returns 1 Step 4 1 Before calibration...

Page 427: ...ed You can send SYST ERR to query any error messages and error event codes For calibration error messages and codes refer to Error summary on page 8 3 For Model 2280S 32 6 the expected values are show...

Page 428: ...tage resistance 4 The instrument begins to take internal measurements This will take a few seconds To query the operation status send the command OPC After all of the operations are completed the inst...

Page 429: ...bration PROTected STEP7 DATA voltage resistance 4 Send the following command to query the operation status OPC After all of the operations are completed the instrument returns 1 Step 8 1 Before calibr...

Page 430: ...7 The following calibration constants are saved Voltage calibration constants Current calibration constants for the 10 mA and 100 mA ranges Step 8 Saves all of the calibration constants You can also c...

Page 431: ...change the calibration password from the front panel 1 Press the MENU key 2 Under System select Settings 3 Select the button next to System Password and press ENTER The System Password screen is disp...

Page 432: ...113 Step2 V DAC full scale DMM reading out of range 7 1 294 0 1294 Step 2 114 Step2 V ADC full scale collected data error 8 1 500e 3 V 6 000e 3 V Step 5 122 Step5 I ADC 10A zero DMM reading out of ra...

Page 433: ...ep 2 114 Step2 V ADC full scale collected data error 8 0 003 V 0 0112 V Step 5 122 Step5 I ADC 10A zero DMM reading out of range 9 8 571e 3 1 714e 2 Step 5 124 Step5 I ADC 10A zero collected data erro...

Page 434: ...s occurred and what event caused it As you work with the status model remember that the end result applies to the Status Byte Register All the status register sets and queues flow into the Status Byte...

Page 435: ...ionable Instrument Summary Event Register is shown in the diagram in Questionable registers on page D 3 The relationship between Operation Event Register Operation Instrument Event Register and Operat...

Page 436: ...Series 2280 Precision DC Power Supply Reference Manual Appendix D Status model 077085503 March 2019 D 3 Figure 119 Series 2280 status model diagram...

Page 437: ...Appendix D Status model Series 2280 Precision DC Power Supply Reference Manual D 4 077085503 March 2019 Figure 120 Questionable registers diagram Figure 121 Operation registers diagram...

Page 438: ...ogram an enable register bit to 1 if the bits in the corresponding registers are set 1 the AND condition occurs You must program all bits in an enable register at the same time This means that you nee...

Page 439: ...e status model can be cleared using commands or by instrument actions When a registered is cleared the bits in the register are set to 0 The event log and all registers are cleared when instrument pow...

Page 440: ...nt needs attention or that some event has occurred When the controller receives an SRQ the controller can interrupt existing tasks to perform tasks that address the request for service Status Byte Reg...

Page 441: ...ror available EAV An error is present in the error queue warning and information messages do not affect this bit 3 8 Questionable summary bit QSB An enabled questionable event 4 16 Message available M...

Page 442: ...r cleared by using the SRE common command To read the Service Request Enable Register use the SRE query The Service Request Enable Register clears when instrument power is cycled or a parameter value...

Page 443: ...new commands 1 2 Request control RQC Not used NA 2 4 Query error QYE An attempt was made to read data from an empty output queue 3 8 Device error DDE A device error has been detected 4 16 Execution e...

Page 444: ...trument GET error The instrument received a Group Execute Trigger GET inside a program message Operation Event Register The Operation Event Register records the unexpected operation of the power suppl...

Page 445: ...er If bit 1 of the Operation Instrument Event Register is set and bit 1 of Operation Instrument Event Enable Register is enabled bit 13 ISUM of the Operation Event Register is set Figure 126 Series 22...

Page 446: ...ates the following has occurred 0 1 Calibration Cal The instrument is performing a calibration 1 through 3 Not used Not used NA 4 16 Measurement Meas The instrument is performing a measurement 5 32 Tr...

Page 447: ...t Register are described in the following figure and table Figure 128 Series 2280 Questionable Event Register Bit Decimal value Bit name When set indicates the following has occurred 0 through 12 Not...

Page 448: ...Instrument Event Register is set and bit 1 of Questionable Instrument Event Enable Register is enabled bit 13 ISUM of the Questionable Event Register is set See the following figure and table below i...

Page 449: ...0 Questionable Instrument Summary Event Register Bit Decimal value Bit name When set indicates the following has occurred 0 1 CC The output is in constant current mode 1 2 CV The output is in constant...

Page 450: ...gister are described in the following figure and table below it Figure 131 Series 2280 Measurement Event Register Bit Decimal value Bit name When set indicates the following has occurred 0 through 12...

Page 451: ...Instrument Event Register is set and bit 1 of Measurement Instrument Event Enable Register is enabled bit 13 ISUM of the Measurement Event Register is set See the following figure and table below it...

Page 452: ...the following figure and table Figure 133 Series 2280 Measurement Instrument Summary Event Register Bit Decimal value Bit name When set indicates the following has occurred 0 1 ROF Reading overflow 1...

Page 453: ...the output summary of the register will set to 1 The commands to program and read the event enable registers are described in STATus subsystem on page 7 94 Condition registers The Series 2280 has the...

Page 454: ...essage 350 Queue Overflow will occupy the last memory location On power up the error queue is empty When empty the message 0 No Error is placed in the queue Messages in the error queue are preceded by...

Page 455: ...xamples illustrate how to generate an SRQ using the status model SRQ when reading buffer becomes full This example shows you how to generate an SRQ when the Series 2280 reading buffer is full This is...

Page 456: ...nd the power supply has returned to the idle state After configuring the status model this code will configure and run the trigger model When the trigger model completes the instrument will generate a...

Page 457: ...e names are the property of Keithley Instruments All other trademarks and trade names are the property of their respective companies Keithley Instruments Corporate Headquarters 28775 Aurora Road Cleve...

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