Related Manuals for Keithley 2231A-30-3
Summary of Contents for Keithley 2231A-30-3
- Page 1 Model 2231A-30-3 Triple-channel DC Power Supply Reference Manual 077-1004-01 / September 2014 *P077100401* 077-1004-01 A T ektr onix Company...
- Page 2 Any unauthorized reproduction, photocopy, or use of the information herein, in whole or in part, without the prior written approval of Keithley Instruments. is strictly prohibited. All Keithley Instruments product names are trademarks or registered trademarks of Keithley Instruments. Other brand names are trademarks or registered trademarks of their respective holders.
- Page 4 Keithley Instruments products are designed for use with electrical signals that are measurement, control, and data I/O connections, with low transient overvoltages, and must not be directly connected to mains voltage or to voltage sources with high transient overvoltages.
- Page 5 (note that selected parts should be purchased only through Keithley Instruments to maintain accuracy and functionality of the product). If you are unsure about the applicability of a replacement component, call a Keithley Instruments office for information.
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Page 6: Table Of Contents
Table of Contents Introduction ......................1-1 Welcome ..........................1-1 Extended warranty ....................... 1-1 Contact information ......................1-1 CD-ROM contents ........................ 1-2 Key features ......................... 1-2 Standard accessories ......................1-2 Optional accessories ......................1-3 Available services ........................ 1-3 General ratings ........................1-3 Quick reference ...................... - Page 7 Table of Contents Model 2231A-30-3 Triple-Channel DC Power Supply Reference Manual Remote communication................... 4-1 Communication interface ..................... 4-1 2231A-001 communication connector ................. 4-1 SCPI command reference ..................5-1 Common commands ......................5-2 *CLS ............................5-2 *ESE ............................5-2 *ESR? ............................5-3 *IDN? ............................
- Page 8 Model 2231A-30-3 Triple-Channel DC Power Supply Reference Manual Table of Contents OUTPut subsystem ......................5-14 OUTPut[:STATe][:ALL] ......................5-14 CHANnel:OUTPut[:STATe] ..................... 5-14 OUTPut:ENABle ........................5-14 OUTPut:TIMer[:STATe] ......................5-15 OUTPut:TIMer:DELay ......................5-15 OUTPut:TRACk[:STATe]......................5-15 OUTPut:SERies[:STATe] ......................5-16 OUTPut: PARallel [:STATe] ....................5-16 SYSTem subsystem ......................
- Page 9 Table of Contents Model 2231A-30-3 Triple-Channel DC Power Supply Reference Manual Maintenance ......................A-1 Introduction .......................... A-1 Line fuse replacement ......................A-1 Cleaning the front-panel display ..................A-2...
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Page 10: Introduction
General ratings ................. 1-3 Welcome Thank you for using a Keithley Instruments product. The Model 2231A-30-3 Trip-Channel Programmable DC Power Supply is a flexible DC source designed to power a wide range of applications. It offers three independent and isolated power channels, allowing you to power circuits with different references or polarities. -
Page 11: Cd-Rom Contents
Section 1：Introduction Model 2231A Triple-channel DC Power Supply Reference Manual CD-ROM contents The Model 2231A-30-3 Product Information CD-ROM is shipped with each power supply. The Product Information CD-ROM contains: • Reference Manual: Includes basic operation topics and maintenance information. •... -
Page 12: Optional Accessories
The Model 2231A-30-3 instrument's general ratings and connections are listed in the following table. When the mains power supplied to the Model 2231A-30-3 exceeds 253 V, the maximum operating time at maximum output power is 1 hour. At the supply voltage range of 110 V, when the mains power exceeds 132 V, the maximum operating time at maximum output power is 1 hour. -
Page 14: Quick Reference
What to do if the power supply does not turn on ....... 2-8 Front-panel overview The front panel of Model 2231A-30-3 is shown below. Descriptions of the controls on the front panel follow the figure. Figure 1: Model 2231A-30-3 front panel... -
Page 15: Rear Panel Overview
Unpack the instrument and check that you received all the items listed as standard accessories. • Check that you also received any other accessories that you ordered with your instrument. Dimensions The dimensions of the Model 2231A-30-3 power supply: 214.5 mm wide × 88.2 mm high ×354.6 mm deep. 077100401/September 2014... -
Page 16: Adjust The Carrying Handle
Model 2231A-30-3 Triple-channel DC Power Supply Reference Manual Section 2:Quick reference Figure 3: Model 2231A front and rear panel dimensions Figure 4: Model 2231A-30-3 top and side dimensions Adjust the carrying handle The handle can be adjusted to the position shown in the following figures. -
Page 17: Power The Instrument On Or Off
50 Hz or 60 Hz. You need to select the line voltage and frequency on the rear panel. Make sure the line voltage setting is compatible with the line voltage in your area. The Model 2231A-30-3 must be turned on and allowed to warm up for at least one hour to achieve rated accuracies. - Page 18 4. Connect the other end of the power cord to a grounded AC outlet. To turn a Model 2231A-30-3 on and off: 1. Disconnect any devices under test (DUTs) from the Model 2231A-30-3 before turning the instrument on. 2. To turn your instrument on, push the front-panel POWER switch to place it in the on position.
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Page 19: Self-Test Procedure
Section 2:Quick reference Model 2231A Triple-channel DC Power Supply Reference Manual Self-test procedure After the instrument is powered on, the screen displays the following information during the self-test process. Initializing… After 1 s, the screen displays the following information for about 2 s if the EEPROM test fails. -
Page 20: Check The Output
Model 2231A-30-3 Triple-channel DC Power Supply Reference Manual Section 2:Quick reference If the factory calibration data are lost, the screen displays the following information for 2 seconds: Factory Calibration Data Lost If no error occurs during the self-test, the screen should display as below: the first row is the output voltage of the 3 channels, and the second row is the current or the OFF status indicator. -
Page 21: Current Output Check
Section 2:Quick reference Model 2231A Triple-channel DC Power Supply Reference Manual Current output check To verify the basic current functions when the power supply is short-circuited, please follow these steps: 1. Remove all leads from the output connectors. 2. Turn on the power supply. 3. - Page 22 Model 2231A-30-3 Triple-channel DC Power Supply Reference Manual Section 2:Quick reference Make sure the voltage selector switch is set according to the present line voltage (110 VAC or 220 VAC) when the power supply is shipped from the factory. Change the voltage setting if it is incorrect.
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Page 24: General Operation
Section 3 General operation In this section: Front-panel operation overview ..........3-1 Panel description ..............3-2 Indicator description ..............3-3 Basic settings ................3-3 Menu description ..............3-4 Overtemperature protection ........... 3-11 Front-panel operation overview Within a few seconds after powering on, the power supply shows the actual voltage for each channel on the top line of the display and the actual current for each channel on the bottom line of the display. -
Page 25: Panel Description
Use up/down arrow keys to adjust the parameters or select the menu operation. Save the present instrument settings as a user-saved setup. The Model 2231A-30-3 supports up to 30 setups. Return the instrument to the specified setup. Select the menu item or confirm the cooperation. -
Page 26: Indicator Description
Model 2231A Triple-channel DC Power Supply Reference Manual Section 3: General operation Indicator description Item Description Constant current mode. Constant voltage mode. The power supply is in remote control mode. Series The outputs of Channel 1 and channel 2 are wired in series. Para The outputs of Channel 1 and channel 2 are wired in parallel. -
Page 27: Menu Description
• *RCL Model 2231A-30-3 does not support the save/recall function when channel 1 and channel 2 are wired in series or parallel. Also, if channel 1 and channel 2 are in tracking mode, you cannot save or recall the setup. -
Page 28: Enable Channels
Model 2231A Triple-channel DC Power Supply Reference Manual Section 3: General operation 6. Push Enter. The default settings for the menu selections are as shown below. Description Item Enable CH1 Enable Channels Enable CH2 Enable CH3 Max V CH1 Max V CH2 Max V CH3 Timer CH1 Timer CH2... -
Page 29: Track Ch1/Ch2
Section 3: General operation Model 2231A Triple-channel DC Power Supply Reference Manual Set the output timers Independent timers may be activated and set for each output channel. The timers start when the Output On/Off button is turned on. When each active timer expires, its corresponding channel turns off. -
Page 30: Combine Ch1+Ch2
Model 2231A Triple-channel DC Power Supply Reference Manual Section 3: General operation If the voltage/current is set to 0, then tracking voltage/current is ignored. If tracking is enabled and CH1 and CH2 timers are both set, then the timer uses the shorter value. Combine CH1+CH2 You can combine the meter readings of channel 1 and channel 2. - Page 31 Section 3: General operation Model 2231A Triple-channel DC Power Supply Reference Manual I1+I2 parallel: To combine metering of channel 1 and channel 2 when the outputs are wired in parallel: Figure 10: Parallel setup All measurements are at the terminals. If the wires used to connect the channels together are too small, too long, or improperly tightened, accuracy of measurements will be adversely affected.
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Page 32: User Settings
Model 2231A Triple-channel DC Power Supply Reference Manual Section 3: General operation Figure 11: Common setup User Settings Output Recall This parameter determines the output state when the power supply is powered on. If you select On for the output recall function, the power supply will restore the output state to that which was in use before the power was last turned off. -
Page 33: System Info
Section 3: General operation Model 2231A Triple-channel DC Power Supply Reference Manual 8. Push Esc to exit the menu. Key Beep Turn the instrument key-click sound on or off from this menu. To enable/disable this function: 1. Push Menu. 2. Use the arrow keys to select User settings. 3. -
Page 34: Overtemperature Protection (Otp)
Model 2231A Triple-channel DC Power Supply Reference Manual Section 3: General operation Checking the firmware version 1. Push Menu. 2. Use the arrow keys and navigate to System Info and then push Enter. 3. Use the arrow keys and navigate to Main. The numbers you see after Main and Aux are the main firmware version and auxiliary firmware version, respectively. -
Page 36: Remote Communication
Model 2231A-001 USB Adapter ..........4-1 Communication interface The DB9 interface connector on the rear panel of Mode 2231A-30-3 power supply is TTL level, and you need to use a Model 2231A-001 USB adapter to connect DB9 interface with a PC. - Page 37 Section 4: Remote communication Model 2231A Triple-channel DC Power Supply Reference Manual Figure 13: Communication connection 077100401/September 2014...
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Page 38: Scpi Command Reference
Section 5 SCPI command reference In this section: Common commands ..............5-2 APPly subsystem ..............5-6 Calibration subsystem ............... 5-7 DISPlay subsystem ..............5-9 INSTrument subsystem ............5-10 MEASure subsystem .............. 5-12 OUTPut subsystem ..............5-14 SYSTem subsystem ............... 5-17 STATus subsystem .............. -
Page 39: Common Commands
Section 5: SCPI command reference Model 2231A Triple-channel DC Power Supply Reference Manual After connecting the 2231A-001 communication connector with PC, you need to send the following command to switch the instrument in remote mode: SYSTem:REMote. Common commands This section describes the general remote interface commands and common commands. The general remote interface commands are commands that have the same general meaning, regardless of the instrument you use. -
Page 40: Esr
Status Syntax *ESR? Related Commands *CLS, *OPC *IDN? This command reads information about the power supply. It returns a parameter that contains four segments divided by a comma. Example: Keithley instruments, 2231A-30-3, 0123456789ABCDEFGH, 1.01-1.04. Item Description Group System Syntax *IDN? -
Page 41: Sre
Section 5: SCPI command reference Model 2231A Triple-channel DC Power Supply Reference Manual This command is to reset the power supply to default settings. Item Description Group Status Syntax *RST Related Commands None *SRE This command is to set or query the status byte enable register. Setting this parameter can determine which byte value of the status byte register is 1, and the byte will set the RQS bit of the status byte register to 1. -
Page 42: Sav
Model 2231A Triple-channel DC Power Supply Reference Manual Section 5: SCPI command reference *SAV This command is to save the current setups of the power supply into specified memory. These setups contain current, voltage, and the max voltage. Item Description Group System Syntax... -
Page 43: Psc
Section 5: SCPI command reference Model 2231A Triple-channel DC Power Supply Reference Manual *PSC This command is to set and query the power on status flag that controls the automatic power on status of SRER and ESER. Item Description Group SOURCE Syntax *PSC... -
Page 44: [Source:]Apply:current[:Level][:Immediate][:Amplitude]
Model 2231A Triple-channel DC Power Supply Reference Manual Section 5: SCPI command reference Unit Returns None Examples APP:VOLT 3,3,1 [SOURce:]APPly:CURRent[:LEVel][:IMMediate][:AMPLitude] This command is to set current to all channels at the same time. Item Description Group Source Syntax [SOURce:]APPly:CURRent[:LEVel][:IMMediate][:AMPLitude] [SOURce:]APPly:CURRent[:LEVel][:IMMediate][:AMPLitude]? Arguments Arg1: current setting for CH1 Optional Arg2: current setting for CH2... -
Page 45: Calibrate:voltage[:Data]
Section 5: SCPI command reference Model 2231A Triple-channel DC Power Supply Reference Manual This command is to set the voltage calibration points. P1, P2, P3 and P4 must be calibrated in numeric order. Item Description Group Calibration Syntax CALibrate:VOLTage:LEVelArgument P1|P2|P3|P4 Returns... -
Page 46: Calibration:save
Model 2231A Triple-channel DC Power Supply Reference Manual Section 5: SCPI command reference CALibration:SAVe This command is to save calibration coefficient into nonvolatile memory. Item Description Group Calibration Syntax CALibration:SAVe Arguments None Returns None Examples Cal:sav CALibration:INITital This command is to set the current calibration coefficient as the default value. Item Description Group... -
Page 47: Display[:Window]:Text[:Data]
Syntax DISPlay[:WINDow]:TEXT[:DATA]DISPlay[:WINDow]:TEXT[:DATA]? Arguments String with “ “ Returns None Examples Disp:text “hello keithley” DISPlay[:WINDow]:TEXT:CLEar This command is to clear all the specified display strings and return the display to voltage and current readings. Item Description Group Display Syntax... -
Page 48: Instrument:nselect
Model 2231A Triple-channel DC Power Supply Reference Manual Section 5: SCPI command reference Group Channel Syntax INSTrument[:SELect] {CH1|CH2|CH3} INSTrument[:SELect]? Arguments CH1|CH2|CH3 Returns CH1/CH2/CH3 Examples Inst CH2 INSTrument:NSELect This command is to select the channel. Item Description Group Channel Syntax INSTrument:NSELectINSTrument:NSELect? Arguments Arg 1, Arg 2, Arg 3... -
Page 49: Instrument:combine:track
Section 5: SCPI command reference Model 2231A Triple-channel DC Power Supply Reference Manual INSTrument:COMbine:TRACk This command is to set CH1and CH2 in track mode. Item Description Group Channel Syntax INSTrument:COMbine:TRACk Arguments None Returns None Examples Inst:com:trac INSTrument:COMbine:OFF This command is to turn off series/parallel/tracking modes. Item Description Group... -
Page 50: Measure[:Scalar]:Voltage[:Dc]
Model 2231A Triple-channel DC Power Supply Reference Manual Section 5: SCPI command reference MEASure[:SCALar]:VOLTage[:DC]? FETCh[:VOLTage][:DC]? The first command is to initiate and execute a new measurement of the voltage. The second command is to query the current voltage. Item Description Group Measure Syntax... -
Page 51: Output Subsystem
Section 5: SCPI command reference Model 2231A Triple-channel DC Power Supply Reference Manual Arguments None Returnsis the power value in unit W Examples MEAS:POW? OUTPut subsystem The output subsystem provides information and settings that control the source output. OUTPut[:STATe][:ALL] This command is to set the output state of all three channels. -
Page 52: Output:timer[:State]
Model 2231A Triple-channel DC Power Supply Reference Manual Section 5: SCPI command reference Arguments Returns Examples Outp:enab 1 OUTPut:TIMer[:STATe] This command is to set the output timer state for the presently selected channel. Item Description Group Output Syntax OUTPut:TIMer[:STATe]OUTPut:TIMer:STATe? Arguments 0|1|ON|OFF... -
Page 53: Output:series[:State]
Section 5: SCPI command reference Model 2231A Triple-channel DC Power Supply Reference Manual Examples Outp:trac 1 OUTPut:SERies[:STATe] This command is to combine the CH1 and CH2 voltage readings when CH1 and CH2 connected in parallel. Item Description Group Output Syntax OUTPut:SERies[:STATe]... -
Page 54: System Subsystem
Model 2231A Triple-channel DC Power Supply Reference Manual Section 5: SCPI command reference SYSTem subsystem This subsystem contains commands that affect the overall operation of the instrument, such as autozero, beeper, communications, event logs, and time. SYSTem:ERRor? This command is to query the error code and error information occurring in the power supply. Item Description Group... -
Page 55: System:rwlock
Section 5: SCPI command reference Model 2231A Triple-channel DC Power Supply Reference Manual Item Description Group System Syntax SYSTem:LOCal Arguments None Returns None Examples Syst:loc SYSTem:RWLock This command is to switch the power supply into remote control mode and locks all of the buttons on the front panel. -
Page 56: Status Subsystem
Model 2231A Triple-channel DC Power Supply Reference Manual Section 5: SCPI command reference STATus subsystem The STATus subsystem controls the status registers of the Model 2231A-30-3. STATus:QUEStionable[:EVENt]? This command is to return to the contents of the questionable event register. After this command executed, the questionable event register is reset. -
Page 57: Status:preset
Section 5: SCPI command reference Model 2231A Triple-channel DC Power Supply Reference Manual ReturnsExamples Stat:ques:cond? STATus:PRESet This command is to reset the status register. Item Description Group Status Syntax STATus:PRESet Arguments None Returns None Examples Stat:pres STATus:QUEStionable:INSTrument[:EVENt]? This command is to query the questionable instrument status event register of the instrument. Item Description Group... -
Page 58: Status:questionable:instrument:isummary
Model 2231A Triple-channel DC Power Supply Reference Manual Section 5: SCPI command reference This queries the operation event register of channel 1, channel 2, channel 3, where:Enable is 1, 2 or 3. Item Description Group Status Syntax STATus:QUEStionable:INSTrument:ISUMmary [:EVENt]? Arguments None Returns ... -
Page 59: Status:operation:condition
Section 5: SCPI command reference Model 2231A Triple-channel DC Power Supply Reference Manual Item Description Group STATus Syntax STATus:OPERation [:EVENt]? Arguments None Returns 0~255 Examples Stat:oper? STATus:OPERation:CONDition? This command is to query the contents of the operation condition register. Item Description Group Status... -
Page 60: Status:operation:instrument:enable
Model 2231A Triple-channel DC Power Supply Reference Manual Section 5: SCPI command reference STATus:OPERation:INSTrument:ENABle This command is to set or query the contents of the operation instrument enable register. Item Description Group Status Syntax STATus:OPERation:INSTrument:ENABle STATus:OPERation:INSTrument:ENABle? Arguments 0~255 Returns 0~255 Examples Stat:oper:inst:enab? STATus:OPERation:INSTrument:ISUMmary[:EVENt]? -
Page 61: Source Subsystem
Section 5: SCPI command reference Model 2231A Triple-channel DC Power Supply Reference Manual Syntax STATus:OPERation:INSTrument:ISUMmary:CONDition? Arguments None Returns 0~255 Examples Stat:oper:inst:isum1:cond? SOURce subsystem The commands in the SOURce subsystem configure and control the current source and voltage source. [SOURce:]CHANnel:OUTPut[:STATe] This command is to set the output state of the currently selected channel. Item Description Group... -
Page 62: [Source:]Current[:Level]:Down[:Immediate][:Amplitude]
Model 2231A Triple-channel DC Power Supply Reference Manual Section 5: SCPI command reference Item Description Group Source Syntax [SOURce:]CURRent[:LEVel]:UP[:IMMediate][:AMPLitude] Arguments None Returns None Examples Curr:up [SOURce:]CURRent[:LEVel]:DOWN[:IMMediate][:AMPLitude] This command is to decrease the current value by one step. Item Description Group Source Syntax [SOURce:]CURRent[:LEVel]:DOWN[:IMMediate][:AMPLitude]... -
Page 63: [Source:]Voltage[:Level][:Immediate][:Amplitude]
Section 5: SCPI command reference Model 2231A Triple-channel DC Power Supply Reference Manual [SOURce:]CURRent[:LEVel]:TRIGgered[:IMMediate][:INCRement]? Arguments Current value |Min|Max|Def|Up|Down Returns Currnet value Examples Curr:trig 1 [SOURce:]VOLTage[:LEVel][:IMMediate][:AMPLitude] This command is to set the voltage value for the current output. Item Description Group Source Syntax [SOURce:]VOLTage[:LEVel]... -
Page 64: [Source:]Voltage[:Level][:Immediate]:Step[:Increment]
Model 2231A Triple-channel DC Power Supply Reference Manual Section 5: SCPI command reference [SOURce:]VOLTage[:LEVel][:IMMediate]:STEP[:INCRement] This command configures voltage stepping. Item Description Group Source Syntax [SOURce:]VOLTage[:LEVel][:IMMediate]:STEP[:INCRement][SOURce:]VOLTage[:LEVel][:IMMediate]:STEP[:INCRement]? Arguments The voltage step for UP/DOWN adjustment Unit kV|V|mV|uV Returns None Examples Volt:step 0.01 Volt:step? [SOURce:]VOLTage[:LEVel]:TRIGgered[:IMMediate][:INCRement] This command is to set the level for the trigger function. -
Page 65: [Source:]Voltage:limit:state
Section 5: SCPI command reference Model 2231A Triple-channel DC Power Supply Reference Manual Examples Volt:limit 25 [SOURce:]VOLTage:LIMit:STATe This command is to enable or disable the voltage limit function. Item Description Group Source Syntax [SOURce:]VOLTage:LIMit:STATe[SOURce:]VOLTage:LIMit:STATe? Arguments 1|0(1:enable) Returns The voltage limit Examples Volt:limit 25 5-28... -
Page 66: Status Model
Model 2231A Triple-channel DC Power Supply Reference Manual Section 5: SCPI command reference Status model 077100401/September 2014 5-29... - Page 67 Section 5: SCPI command reference Model 2231A Triple-channel DC Power Supply Reference Manual Signal Meaning Operation Instrument Summary Register Constant voltage Constant current The power supply is calculating the new calibration parameter. The output of the power supply is ON or OFF. Operation Instrument Status Register INST1 STATus:OPERation:INSTrument:ISUMmary1 is reported to INST1...
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Page 68: Error Messages
Model 2231A Triple-channel DC Power Supply Reference Manual Section 5: SCPI command reference Error messages Code Description 'No Error' 'Module Initialization Lost' 'Initialization Lost' 'Module Calibration Lost' 'Eeprom failure' 'Too many numeric suffices' 'No input command' 'Error Para Units' 'Error Para Type' 'Error Para Count' 'Unmatched Quote' 'Unmatched Bracket'... - Page 69 Section 5: SCPI command reference Model 2231A Triple-channel DC Power Supply Reference Manual Code Description -223 'Too much data' -224 'Illegal parameter value' -225 'Out of memory' -230 'Data Corrupt or Stale' -310 'System error' -350 'Too many errors' -400 'Query error' -410 'Query INTERRUPTED'...
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Page 70: Additional Information
Section 6 Additional Information In this section: Additional Model 2231A-30-3 information ......... 6-1 Additional Model 2231A-30-3 information For more information about the Model 2231A-30-3, refer to: • The Product Information CD-ROM (shipped with the product) contains the product documentation. •... - Page 72 Make sure that the replacement fuse meets the specifications of the power supply. Model 110 V 220 V 2231A-30-3 6.30 A TH 250V 3.15 A TH 250V To replace the line fuse replacement, follow these steps: 1. Open the cover with a screwdriver.
- Page 73 Appendix A: Maintenance Model 2231A-30-3 Triple-Channel DC Power Supply Reference Manual Replace the fuse with a new fuse with the same ratings as the fuse you are removing; install it into the fuse box and then insert the box cover.
- Page 75 All other trademarks and trade names are the property of their respective companies. Keithley Instruments Corporate Headquarters • 28775 Aurora Road • Cleveland, Ohio 44139 • 440-248-0400 • Fax: 440-248-6168 • 1-888-KEITHLEY • www.keithley.com A G r eater Mea sur e of Confi denc e...