Keysight N5741A User Manual Download

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Series N5700 User’s Guide

Appendix B

Verification and Calibration

Verification ......................................................................................................... 96

Calibration ........................................................................................................ 115

The verification procedures described in this appendix verify that the
power supply is operating normally and is within published
specifications.

This appendix also includes calibration procedures for the Keysight
N5700 power supplies. Instructions are given for performing the
procedures from a controller over the GPIB.

NOTE

Perform the verification tests before calibrating your power supply. If the power

supply passes the verification tests, the unit is operating within its calibration

limits and does not need to be re-calibrated.

The recommended calibration interval for Keysight N5700 power
supplies is one year.

Summary of Contents for N5741A

Page 1: ...User s Guide Keysight Series N5700 System DC Power Supply ...

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Page 4: ... Category With reference to the equipment types in the WEEE directive Annex 1 this product is classified as Monitoring and Control instrumentation product Do not dispose in domestic household waste To return unwanted products contact our local Keysight office or see http www keysight com environment product for more information Certification Keysight Technologies certifies that this product met it...

Page 5: ...alified service trained personnel who are aware of the hazards involved should remove instrument covers Always disconnect the power cable and any external circuits before removing the instrument cover Do Not Modify the Instrument Do not install substitute parts or perform any unauthorized modification to the product Return the product to a Keysight Sales and Service Office for service and repair t...

Page 6: ... SCPI command structure and basic programming concepts Language Reference Chapter 5 describes all of the SCPI programming commands Programming Examples Chapter 6 provides Visual BASIC example programs that illustrate some common applications Specifications Appendix A describes specifications and supplemental characteristics Verification and Calibration Procedures Appendix B explains the verificati...

Page 7: ... 28 Parallel Connections 30 Series Connections 32 J1 Connector Connections 34 3 Operating the Power Supply Locally 35 Turn On Check Out 36 Normal Operation 38 Protection Functions 39 Output On Off Controls 42 Analog Programming of Output Voltage and Current 44 4 Operating the Power Supply Remotely 49 Connecting to the Interfaces 50 SCPI Commands an Introduction 59 5 Language Reference 65 SCPI Comm...

Page 8: ...ce Specifications 90 Supplemental Characteristics 91 Outline Diagram 93 B Verification and Calibration 95 Verification 96 Calibration 115 C Service 117 Types of Service Available 118 Repackaging for Shipment 118 Operating Checklist 118 Error Messages 120 D Compatibility 125 Differences In General 126 Compatibility Command Summary 127 Index 129 ...

Page 9: ...ologies Series N5700 Power Supplies This chapter is not meant to describe every operating feature in detail It is simply a quick reference guide to quickly become familiar with the essential components of the power supply It can also be used as a memory jogger for experienced users to quickly find a front rear panel function A quick reference programming command chart is included in the beginning ...

Page 10: ...ary connectors to control and monitor the power supply operation by analog signals or by the built in remote communication interfaces Output Features Constant voltage constant current with automatic crossover High resolution voltage and current front panel controls Accurate voltage and current readback Independent edge triggered external shut off and level triggered external enable disable Paralle...

Page 11: ...del Voltage Range Current Range Model Voltage Range Current Range N5741A 0 6V 0 100A N5761A 0 6V 0 180A N5742A 0 8V 0 90A N5762A 0 8V 0 165A N5743A 0 12 5V 0 60A N5763A 0 12 5V 0 120A N5744A 0 20V 0 38A N5764A 0 20V 0 76A N5745A 0 30V 0 25A N5765A 0 30V 0 50A N5746A 0 40V 0 19A N5766A 0 40V 0 38A N5747A 0 60V 0 12 5A N5767A 0 60V 0 25A N5748A 0 80V 0 9 5A N5768A 0 80V 0 19A N5749A 0 100V 0 7 5A N5...

Page 12: ...VP or UVL setting When OCP 488 is pressed and held the display indicates the GPIB address When LAN is pressed and held the display indicates the IP and Ethernet address 4 DC AMPS display LED display that normally displays the current measured at the output terminals When LIMIT is pressed the display indicates the programmed current setting When LAN is pressed and held the display indicates the IP ...

Page 13: ...he Voltage knob the display shows OUP You cannot set the over voltage protection lower than about 5 above the present output voltage setting UVL function Press OVP UVL twice to set the under voltage programming limit with the Voltage knob the display shows UUL You cannot set the under voltage protection higher than about 5 below the present output voltage setting 14 LIMIT button Limit function Pre...

Page 14: ...ludes output voltage and current limit programming and monitoring signals Shut Off control electrical signal Enable Disable control dry contact power supply ok Power Supply OK signal and operation mode CV CC signal See next page for details 6 SW1 setup switch Nine position switch for selecting remote programming and monitoring modes for Output Voltage Current Limit and other control functions See ...

Page 15: ...stance Down The remote programming range is 0 5V 0 5KΩ Up The remote programming range is 0 10V 0 10KΩ 4 Voltage and Current monitoring range Down The remote monitoring range is 0 5V Up The remote monitoring range is 0 10V 5 Shut Off Logic Select Down OUT OFF Low 0 0 6V or short OUT ON High 2V 15V or open Up OUT OFF High 2V 15V or open OUT ON Low 0 0 6V or short 6 Not Used 7 Output voltage resisti...

Page 16: ...r constant voltage constant current mode indication Pin 14 Enable OUT Connect Pin 14 to Pin 1 to enable the output Disconnect to disable the output Pin 15 Shut Off Input for Shut Off control of the output Referenced to Chassis Common Pin 16 Power Supply OK Output to indicate the power supply status Referenced to Chassis Common Pin 17 20 Not Used No connection Pin 21 Local Analog State Output for i...

Page 17: ...usses installation rack mounting and line cord connections This chapter also discusses how to connect your load to the output terminals It discusses what you need to know about wire sizes and how to compensate for voltage drops in the load leads It also discusses various loads configurations and how to connect units in series and parallel Before getting started check the list under Items Supplied ...

Page 18: ...ver for the AC input on which the strain relief assembly is mounted only used for 1500W units Analog connector A DB25 subminiature connector plug for analog control connections Shield assembly A safety shield for the output terminal connections Hardware Nuts washers and bolts for connecting load leads to output bus bars only used for 6V to 60V units Documentation Set Contains User s Guide with Pro...

Page 19: ...the power supply and review this guide for safety warnings and instructions Safety warnings for specific procedures are located at appropriate places throughout this Guide Environment WARNING Do not operate the instrument in the presence of flammable gasses or fumes The environmental conditions dimensions of the instrument as well as an outline diagram are given in Appendix A Basically the instrum...

Page 20: ...he front panel rack mount brackets to install the power supply in the rack 2 Use a support bracket to provide adequate support for the rear of the power supply 3 If using rack mount slides use Keysight N5740A Rack mount Slide Kit to install the unit in a standard 19 inch equipment rack Refer to the following figure for assembly instructions Use two 10 32 x 3 8 in max screws at each side To prevent...

Page 21: ...al The current requirement of 1500W units is 21A 100 VAC nominal and 11A 200 VAC nominal Input Connections for 750W units Connect the power cord to the IEC 320 connector on the rear of the unit The IEC connector provides the safety ground connection when the AC cord is plugged into a grounded AC receptacle If the wrong power cord was shipped with your unit contact your nearest Keysight Sales and S...

Page 22: ... of the base Place a wrench on the base to keep it from turning Now tighten the compression nut to the base 14 16 2 ft lbs while holding the cable in place Now the cable is securely fastened inside the strain relief Refer to the following figure Route the AC wires to the input connector terminals as required To connect the wires loosen the terminal screw insert the stripped wire into the terminal ...

Page 23: ...nt at the rated load or the current that would flow in the event the load wires were shorted whichever is greater Along with conductor temperature you must also consider voltage drop when selecting wire sizes The following chart lists the resistance for various wire sizes and also the maximum lengths to limit the voltage drop to 1 0 volt for various currents Although the power supply will compensa...

Page 24: ...t the load and its connections have no accessible live parts Ensure that the load wiring insulation rating is greater than or equal to the maximum output voltage of the power supply CAUTION Ensure that the load wiring mounting hardware does not short the output terminals Heavy connecting cables must have some form of strain relief to prevent loosening the connections or bending the bus bars All lo...

Page 25: ... rating is greater than or equal to the maximum output voltage of the power supply The 80V to 600V models have a four terminal wire clamp output connector The two left terminals are the positive outputs and the two right terminals are the negative outputs The connector specifications are as follows Wire Size AWG 18 to AWG 10 Stripping Length 10 mm 0 39 in Torque 6 5 7 in lb The following instructi...

Page 26: ...here is a potential shock hazard at the sense connector when using a power supply with a rated output greater than 40V Ensure that the local sense and remote sense wiring insulation rating is greater than or equal to the maximum output voltage of the power supply Ensure that the connections at the load end are shielded to prevent accidental contact with hazardous voltages Local and remote sense co...

Page 27: ...iring between V and local sense and between V and local sense will fail if load current flows through it Remote Sensing Use remote sensing in applications where load regulation at the load is critical Remote sensing allows the power supply to automatically compensate for the voltage drop in the load leads Refer to Appendix A for the maximum allowable voltage drop on the load wires Remote sensing i...

Page 28: ... the open load wire and turn on the power supply Load Considerations Multiple Loads The following figure shows multiple loads connected to one power supply Each load should be connected to the power supply s output terminals using separate pairs of wires It is recommended that each pair of wires will be as short as possible and twisted or shielded to minimize noise pick up and radiation The sense ...

Page 29: ...er leads Twisting the load wires reduces the parasitic inductance of the cable which could produce high frequency voltage spikes at the load and the output because of current variation in the load itself The impedance introduced between the power supply output and the load could make the ripple and noise at the load worse than the noise at the power supply rear panel output Additional filtering wi...

Page 30: ...stem is grounded To avoid noise problems caused by common mode current flowing from the load to ground it is recommended to ground the output terminal as close as possible to the power supply chassis ground WARNING SHOCK HAZARD For models up to 60 VDC rated output no point on the output shall be more than 60 VDC above or below chassis ground For models greater than 60 VDC rated output no point on ...

Page 31: ...ns voltage drops Setting up the Master Unit Connect the sensing circuit for either local or remote sensing as shown in the previous figures Set the master unit output voltage to the desired voltage Program the current limit to the desired load current limit divided by the number of parallel units During operation the master unit operates in constant voltage mode regulating the load voltage at the ...

Page 32: ...Over Current Protection Over current protection if desired may only be used with the master unit When the master unit shuts down it programs the slave units to zero output voltage Series Connections WARNING SHOCK HAZARD For models up to 60 VDC rated output no point on the output shall be more than 60 VDC above or below chassis ground For models greater than 60 VDC rated output no point on the Posi...

Page 33: ... power supplies configured as a positive and a negative output CAUTION This caution applies when using analog voltage programming with series connected power supplies The analog programming circuits of these power supplies are referenced to the negative sense S potential Therefore the analog voltage circuits used to control each series connected unit must be separated and floated from each other S...

Page 34: ...ting Plug AMP part number 745211 2 Wire Size AWG 26 to AWG 22 Extraction tool AMP part number 91232 1 or equivalent Manual pistol grip tool Handle AMP p n 58074 1 Head AMP p n 58063 1 CAUTION Pins 12 22 and 23 of J1 are connected internally to the negative sense S potential of the power supply Do not attempt to bias any of these pins relative to the negative output terminal Use an isolated ungroun...

Page 35: ...ncluded to let you verify that the power supply is operating properly Additionally information about programming the power supply using the J1 analog programming connector is also provided The simple examples discussed in this chapter show you how to program output voltage and current functions protection functions output on off functions safe start and auto restart analog programming of voltage a...

Page 36: ...stabilize before you enable the output with the OUT ON button The output voltage and current settings may not be at zero during this stabilization time Check that the settings are stable by pressing the LIMIT button and verifying that the voltage and current settings indicate zero Turn the output on by pressing the OUT ON button The green OUT ON indicator should be illuminated The green CV indicat...

Page 37: ... setting Constant Current Check Turn the POWER switch off Wait a few seconds until the AC indicator on the front panel goes out Use a heavy wire and short the V and V output terminals together Turn the POWER switch on Turn the output on by pressing the OUT ON button The green OUT ON indicator should be illuminated The green CC indicator should be also illuminated Rotate the current knob while obse...

Page 38: ...se or fine resolution Press the FINE button to select finer resolution The FINE indicator turns on NOTE If you cannot adjust the voltage to the value that you desire the power supply may be operating at its current limit Check the load condition and the current limit setting Also the voltage cannot be programmed lower than about 5 above the UVL setting or higher than about 5 below the OVP setting ...

Page 39: ...utput voltage attempts to exceed the programmed limit in response to an analog programming signal or in the event of a power supply failure the over voltage protection circuit will protect the load by disabling the output The voltage is monitored at the sense terminals thus providing the protection level directly at the load Upon detection of an over voltage condition the output is disabled the di...

Page 40: ...tment attempt The minimum UVL setting is zero Over Current Protection Over current protection will shut down the power supply output if the load current reaches the current limit setting This protection is useful when the load is sensitive to an over current condition To arm the over current protection press the OCP 488 button so that the OCP indicator illuminates When armed a transition from cons...

Page 41: ...hed depending on the Safe Start or Auto Restart mode In Safe Start mode the output of the power supply is Off as specified by the reset state when AC power returns In Auto Restart mode the power supply recovers its last settings when AC power returns Front Panel Lock Out The front panel controls can be locked to protect from accidental power supply parameter change Press and hold the LIMIT button ...

Page 42: ... and the output voltage and current are zero This is the factory default CAUTION After the OFF is first displayed you need to allow a few seconds for the unit to stabilize before you enable the output with the OUT ON button The output voltage and current settings may not be at zero during this stabilization time Check that the settings are stable by pressing the LIMIT button and verifying that the...

Page 43: ...iggered it may not be triggered by every state change For example after applying AC power the output will not be disabled by the Shut Off function if the Shut Off input is in the shut off state This is because the unit has not detected an on to off signal transition Enable Disable Terminals CAUTION To prevent possible damage to the unit do not connect the Enable or Enable terminals to the positive...

Page 44: ...y this setting If a fault occurs in one unit its Power Supply OK signal is set low and its display will indicate the fault The other units shut off with their displays indicating SO When the fault condition is cleared all units will recover according to their Safe Start or Auto Restart settings The following figure shows three units daisy chained the same connection method can be used with additio...

Page 45: ...hoose the pull up resistor so that the sink current will be less than 5mA when the output is in low state SW1 switch 1 and 2 J1 pin 8 function J1 pin 21 signal Output voltage current control Both Down default No effect Open Local Either one or both Up 0 or Short 0 0 6V Analog 1 or Open Open Local Voltage Programming of Output Voltage and Current CAUTION To maintain the isolation of the power suppl...

Page 46: ...ternal resistors The voltage drop across the resistors is used as the programming voltage for the power supply To maintain the temperature stability specification of the power supply only use resistors that are stable and low noise with a temperature coefficient less than 50ppm Set the power supply to resistance programming as follows Make sure that the power supply is turned off Set SW1 setup swi...

Page 47: ...ector also provides analog signals for monitoring the output voltage and current Selection of the voltage range between 0 5 V or 0 10 V is made by SW1 setup switch 4 The monitoring signals represent 0 to 100 of the power supply output voltage and current rating The monitor outputs have a 500 Ω series output resistance Make sure that the sensing circuit has an input resistance greater than 500 kΩ o...

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Page 49: ...f configuration NOTE Detailed information on configuring the remote interfaces is included in the USB LAN GPIB Interfaces Connectivity Guide document located on the Automation Ready CD ROM included with this product This chapter also contains a brief introduction to the SCPI Programming language SCPI Standard Commands for Programmable Instruments is a programming language for controlling instrumen...

Page 50: ...e Automation Ready CD ROM that is shipped with your product 2 If you do not have a GPIB interface card installed on your computer turn off your computer and install the GPIB card 3 Connect your instrument to the GPIB interface card using a GPIB interface cable 4 Use the Connection Expert utility of the Keysight IO Libraries Suite to configure the installed GPIB interface card s parameters 5 The po...

Page 51: ...ake several seconds When the instrument is recognized your computer will display the VISA alias IDN string and VISA address This information is located in the USB folder NOTE The VISA address is USB0 2391 2055 serialnumber 0 INSTR where 2391 is the Keysight code 2055 is the N5700 code and serialnumber is the 10 character serial number located on the label on the side of the unit 4 You can now use ...

Page 52: ...front panel LAN button to view the IP address NOTE Each Keysight N5700 power supply is shipped with a default hostname with the format A modelnumber serialnumber where modelnumber is the instrument s 6 character model number e g N5741A and serialnumber is 5th through the 9th character of the 10 character serial number located on the label on the side of the unit e g H1234 if the serial number is U...

Page 53: ... may need to manually release the previous settings 3 The factory shipped instrument LAN settings are configured to automatically obtain an IP address from the network using a DHCP server or using AutoIP if a DHCP server is not present You can leave these settings as they are Most Keysight products and most computers will automatically choose an IP address using auto IP if a DHCP server is not pre...

Page 54: ...when the LAN port is connected and configured Using the Web Server Your power supply has a built in Web server that lets you control it directly from an internet browser on your computer With the Web server you can control and configure all of the front panel functions as well as additional functions such as triggering and the LAN parameters which are not available from the front panel NOTE The bu...

Page 55: ...ne The power supply allows any combination of up to three simultaneous data socket and telnet connections to be made The socket programming interface also allows a control socket connection The control socket can be used by a client to send device clear and to receive service requests Unlike the data socket which uses a fixed port number the port number for a control socket varies and must be obta...

Page 56: ... modify the LAN parameters The configurable LAN parameters are described as follows IP Address Configuration This setting indicates how the instrument will determine its IP Address Subnet Mask and Default Gateway If Automatic is selected the instrument tries to obtain an IP address from a DHCP server If a DHCP server is found the DHCP server assigns an IP address Subnet Mask and Default Gateway to...

Page 57: ... If Dynamic DNS is available on your network and your instrument uses DHCP the Hostname is registered with the Dynamic DNS service at power on If the field is blank the factory default hostname is restored A hostname must start with a letter and may contain upper and lower case letters numbers and dashes The Maximum length is 15 characters The default format is A modelnumber digits 5 through 9 of ...

Page 58: ... can be restored by pressing and holding the front panel LAN button for three seconds Pressing the LAN button again while the message LAn rES is displayed resets the LAN settings Factory shipped non volatile LAN settings Get IP Address Automatic Alternate DNS server Blank IP Address 169 254 57 0 Desired Hostname A N57xxA xxxxx Subnet Mask 255 255 0 0 Description Keysight N57xxA serial Default Gate...

Page 59: ...ax is used in this manual Square Brackets Items within square brackets are optional The representation SOURce VOLTage means that SOURce may be omitted Angle brackets Items within angle brackets are parameter descriptions For example NR1 indicates a specific form of numerical data Vertical bar Vertical bars separate alternative parameters For example VOLT CURR indicates that either VOLT or CURR can...

Page 60: ...a null string within a message Beginning the command with a colon discards the previous path For example you could clear the output protection and check the status of the Operation Condition register in one message by using a root specifier as follows OUTPut PROTection CLEar STATus OPERation CONDition The following message shows how to combine commands from different subsystems as well as within t...

Page 61: ... MAX Set up the proper number of variables for the returned data Read back all the results of a query before sending another command to the power supply Otherwise a Query Interrupted error will occur and the unreturned data will be lost Common Commands Common commands generally control overall power supply functions such as reset status and synchronization All common commands consist of a three le...

Page 62: ... 27 3 2 73E 02 MAX MIN and MAX are the minimum and maximum limit values that are implicit in the range specification for the parameter Bool Boolean Data Can be numeric 0 1 or named OFF ON SPD String program data String parameters enclosed in single or double quotes Suffixes and Multipliers Class Suffix Unit Unit with Multiplier Current A ampere MA milliampere Amplitude V volt MV millivolt Time S s...

Page 63: ...on command has completed OUTPut ON WAI MEASure VOLTage OPC This command places a 1 in the Output Queue when all pending operations have completed Because it requires your program to read the returned value before executing the next program statement OPC can be used to cause the controller to wait for commands to complete before proceeding with its program OPC This command sets the OPC status bit w...

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Page 65: ...e and gives an introduction to programming You should also be familiar with chapter 3 in order to understand how the power supply functions Subsystem commands are specific to functions They can be a single command or a group of commands The groups are comprised of commands that extend one or more levels below the root The subsystem commands are arranged alphabetically according to the function the...

Page 66: ...rogramming INITiate IMMediate TRANsient Initiates the trigger system CONTinuous TRANsient Enables disables continuous triggers MEASure SCALar CURRent DC Returns the measured output current VOLTage DC Returns the measured output voltage OUTPut STATe Bool Enables disables the specified output PON STATe RST AUTO Programs the Power On State PROTection CLEar Resets latched protection SOURce CURRent LEV...

Page 67: ...he Positive transition filter SYSTem COMMunicate RLSTate LOCal REMote RWLock Specifies the Remote Local state of the instrument ERRor Returns the error number and error string VERSion Returns the SCPI version number TRIGger SOURce BUS Sets the measurement trigger source TRANsient IMMediate Generates a transient trigger Common Commands Command Description CLS Clear status ESE NRf Standard event sta...

Page 68: ...rate LEVel for the value being entered Data values are entered in either volts or amperes depending on which function is being calibrated CALibrate DATE date CALibrate DATE This command stores the date the unit was last calibrated The data must be of the numeric format yyyy mm dd where yyyy indicates the year mm indicates the month and dd indicates the day The query returns the date CALibrate LEVe...

Page 69: ...password is not 0 If the password is not entered or is incorrect an error is generated and the calibration mode remains disabled The query returns only the state not the password The RST value Off CALibrate VOLTage LEVel This command initiates the calibration of the output voltage Measure Commands Measure commands measure the output voltage or current MEASure commands acquire new data before retur...

Page 70: ...reset state or the settings the unit had when it was turned off RST programs the unit to the reset state AUTO programs the unit to the settings it had when it was turned off The power on state information is saved on non volatile memory Refer to RST and RCL under System Commands for details OUTPut PROTection CLEar This command clears the latched signals that have disabled the output The over volta...

Page 71: ... Protection Clear command after the cause of the condition is removed SOURce VOLTage LEVel IMMediate AMPLitude value MIN MAX SOURce VOLTage LEVel IMMediate AMPLitude MIN MAX SOURce VOLTage LEVel TRIGgered AMPLitude value MIN MAX SOURce VOLTage LEVel TRIGgered AMPLitude MIN MAX These commands set the immediate and the triggered output voltage level The values are programmed in volts The immediate l...

Page 72: ... 76 95 142 285 570 SOURce VOLTage PROTection LEVel value MIN MAX SOURce VOLTage PROTection LEVel MIN MAX This command sets the over voltage protection OVP level of the output The values are programmed in volts If the output voltage exceeds the OVP level the output is disabled and OV is set in the Questionable Condition status register The RST value Max The range of values that can be programmed fo...

Page 73: ...ICE REQUEST ENABLE LOGICAL OR SERVICE REQUEST GENERATION 8 16 32 128 8 16 32 128 RQS OPER MSS ESB MAV QUES 4 5 6 7 UNR OT OV 0 4 QUESTIONABLE STATUS 10 CONDITION LOGICAL OR EVENT ENABLE PTR NTR 1 16 1024 1 16 1024 1 16 1024 1 16 1024 3 CONDITION 5 8 PTR NTR EVENT ENABLE CV CC 32 256 OC 1 WTG OPERATION STATUS PF 2 4 4 2 4 4 2 2 2 INH 9 512 512 512 512 64 10 1024 256 1024 256 1024 256 1024 OUTPUT BU...

Page 74: ...clears it The bit configuration of the Operation status registers is as follows Bit Position 15 11 10 9 8 7 6 5 4 0 Bit Value 1024 256 32 Bit Name CC CV WTG CC The output is in constant current CV The output is in constant voltage WTG The unit is waiting for a transient trigger STATus OPERation CONDition This query returns the value of the Operation Condition register That is a read only register ...

Page 75: ...e bits in both NTR and PTR registers are set to 0 then no transition of that bit at the Operation Condition register can set the corresponding bit in the Operation Event register The Preset value are NTR 0 PTR 32767 STATus QUEStionable EVENt This query returns the value of the Questionable Event register The Event register is a read only register which stores latches all events that are passed by ...

Page 76: ...ster is set to 1 then a 1 to 0 transition of the corresponding bit of the Questionable Condition register causes that bit in the Questionable Event register to be set When a bit of the Questionable PTR register is set to 1 then a 0 to 1 transition of the corresponding bit in the Questionable Condition register causes that bit in the Questionable Event register to be set If the same bits in both NT...

Page 77: ... it The bit configuration is the same as the Standard Event Status Enable register see ESE OPC OPC This command causes the instrument to set the OPC bit bit 0 of the Standard Event Status register when the instrument has completed all pending operations Pending operations are complete when All commands sent before OPC have been executed This includes overlapped commands Most commands are sequentia...

Page 78: ...eue MAV bit Reading the Status Byte register does not clear it The input summary bits are cleared when the appropriate event registers are read The MAV bit is cleared at power on by CLS or when there is no more response data available A serial poll also returns the value of the Status Byte register except that bit 6 returns Request for Service RQS instead of Master Status Summary MSS A serial poll...

Page 79: ...te local state determines the instrument s remote local state The remote local state is unaffected by RST or any SCPI commands other than SYSTem COMMunicate RLState At power on however the communications setting always returns to LOCal SYSTem COMMunicate TCPip CONTrol This query returns the control connection port number This is used to open a control socket connection to the instrument Refer to c...

Page 80: ...s 0 through 15 with the SAV command Note that you can only recall a state from a location that contains a previously stored state NOTE All saved instrument states are lost when the unit is turned off RST This command resets the power supply to a factory defined state This state is defined as follows Note that RST also forces an ABORt command The RST settings are as follows CAL STAT Off SOUR CURR P...

Page 81: ...iggers are ignored INITiate CONTinuous TRANsient ON OFF INITiate CONTinuous TRANsient This command continuously initiates output triggers The enabled state is On 1 the disabled state is Off 0 When disabled the trigger system must be initiated for each trigger with the INITiate command TRIGger TRANsient IMMediate If the trigger system has been initiated this command generates an immediate output tr...

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Page 83: ...way you find useful provided you agree that Keysight Technologies has no warranty obligations or liability for any example programs The example programs are written in Microsoft Visual Basic 6 0 using the VISA COM IO library The VISA COM library must be downloaded from the Automation Ready CD ROM to use these programs For information about using VISA COM in another Visual Basic project refer to Pr...

Page 84: ...erCurrOn As Long These variable are neccessary to initialize the VISA COM Dim ioMgr As KeysightRMLib SRMCls Dim Instrument As VisaComLib FormattedIO488 The following command line provides the program with the VISA name of the interface that it will communicate with It is currently set to use GPIB IOaddress GPIB0 5 INSTR Use the following line for LAN communication IOaddress TCPIP0 141 25 36 214 Us...

Page 85: ...URR Str CurrSetting Turn the output on WriteString OUTP ON Make sure that the output is on before continuing WriteString OPC ReadString Measure the voltage WriteString Meas Volt measVolt ReadNumber MsgBox Measured Voltage is Str measVolt Check instrument for any errors WriteString Syst err ErrString ReadString give message if there is an error If Val ErrString Then MsgBox Error in instrument vbCrL...

Page 86: ...g Dim trigVoltSetting As Double This constant represents the register value for Waiting for Trigger Const WTG 32 These variables are necessary to initialize the VISA COM Dim ioMgr As KeysightRMLib SRMCls Dim Instrument As VisaComLib FormattedIO488 The following line provides the VISA name of the GPIB interface IOaddress GPIB0 5 INSTR Use the following line instead for LAN communication IOaddress T...

Page 87: ...r later display msg1 Voltage before trigger Str MeasureVolt Initiate the trigger system WriteString INIT Make sure that the trigger system is initiated Do WriteString STAT OPER COND stat ReadNumber Loop Until stat And WTG WTG Trigger the unit WriteString TRG Make sure that the trigger is done WriteString OPC ReadString Measure the voltage after triggering the change WriteString MEAS VOLT MeasureVo...

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Page 89: ...line drawing of the unit is included at the end of the chapter Unless otherwise noted specifications are warranted over the ambient temperature range of 0 to 40 C Sensing is at the rear terminals of the power supply after a 30 minute warm up period Sense terminals are externally jumpered to their respective output terminals Supplemental characteristics are not warranted but are descriptions of typ...

Page 90: ...mA 5 5mA Source Effect change from 85 132 VAC input or 170 265 VAC input Voltage 2 6mV 2 8mV 3 25mV 4mV 5mV 6mV 8mV 10mV 12mV 17mV 32mV 62mV Current 750W 12mA 11mA 8mA 5 8mA 4 5mA 3 9mA 3 25mA 2 95mA 2 75mA 2 5mA 2 25mA 2 13mA Current 1500W 20mA 18 5mA 14mA 9 6mA 7mA 5 8mA 4 5mA 3 9mA 3 5mA 3mA 2 5mA 2 26mA Programming Accuracy NOTE 1 Voltage 0 05 3mV 4mV 6 25mV 10mV 15mV 20mV 30mV 40mV 50mV 75mV ...

Page 91: ...A 2 3mA 1 5mA 1 14mA 0 9mA 0 6mA 0 3mA 0 156mA Current 1500W 21 6mA 19 8mA 14 4mA 9 12mA 6mA 4 6mA 3mA 2 28mA 1 8mA 1 2mA 0 6mA 0 312mA Front Panel Display Accuracy 4 digits of rated output 1 count Voltage 30mV 40mV 62 5mV 100mV 150mV 200mV 300mV 400mV 500mV 750mV 1 5 V 3 V Current 750W 500mA 450mA 300mA 190mA 125mA 95mA 62 5mA 47 5mA 37 5mA 25mA 12 5mA 6 5mA Current 1500W 900mA 825mA 600mA 380mA ...

Page 92: ... 1 C 100m For 1500W models from 60V to 600V derate either the output current or the ambient temperature but not both Regulatory Compliance EMC Safety Complies with European EMC Directive for test and measurement products IEC EN 61326 1 CISPR 11 Group 1 class A AS NZS CISPR 11 ICES NMB 001 Complies with the Australian standard and carries the C Tick mark This ISM device complies with Canadian ICES ...

Page 93: ...OT FINE LIMIT UVL OCP 488 LAN OUT ON OVP POWER I O N5749A 100V 7 5A 750W System DC Power Supply A A A 57 8 0 5 92 0 0 5 92 0 0 5 433 1 0mm 507 0 1 0mm 22 0mm 3 0mm 30 0mm Bus Bar Detail 6V to 60V Models 8 5mm Strain Relief Detail 1500W Models 35mm AC INPUT O N OF F 422 8 1 0mm V V NOT ACTIVE J2 SW1 GPIB ANALOG PROGRAMMING S LSNC LC S 1 2 3 4 5 6 7 8 9 10 100 Ethernet LINK TX J1 467 0 1 0mm 31 8mm ...

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Page 95: ...ix also includes calibration procedures for the Keysight N5700 power supplies Instructions are given for performing the procedures from a controller over the GPIB NOTE Perform the verification tests before calibrating your power supply If the power supply passes the verification tests the unit is operating within its calibration limits and does not need to be re calibrated The recommended calibrat...

Page 96: ...cy 20 ppm Keysight 3458A or equivalent Current Monitor 15 A 0 1Ω 0 04 TC 5ppm C 100 A 0 01Ω 0 04 TC 5ppm C 300 A 0 001Ω 0 04 TC 5ppm C Guildline 9230 15 Guildline 9230 100 Guildline 9230 300 Load Resistor For 750 W models 0 06Ω 0 09Ω 0 21Ω 0 53Ω 1 20Ω 2 11Ω 4 80Ω 8 42Ω 13 33Ω 30 0Ω 120Ω 462Ω all resistors 1kW minimum For 1500 W models 0 03Ω 0 04Ω 0 10Ω 0 26Ω 0 60Ω 1 05Ω 2 40Ω 4 21Ω 6 67Ω 15 0Ω 60Ω...

Page 97: ...ltmeters settling times and slew rates of the power supply may have to be taken into account Wait statements can be used in the test program if the test system is faster than the power supply Current Monitoring Resistor The 4 terminal current shunt is used to eliminate output current measurement error caused by voltage drops in the load leads and connections It has special current monitoring termi...

Page 98: ...cord card for the appropriate model under Voltage Programming and Readback Minimum Voltage Vout 4 Program the output voltage to its full scale rating 5 Record the output voltage readings on the DVM as well as the measurement readback The readings should be within the limits specified in the test record card for the appropriate model under Voltage Programming and Readback High Voltage Vout CV Load ...

Page 99: ...etween the DVM reading in steps 6 and 8 is the source effect which should not exceed the value listed in the test record card for the appropriate model under CV Source Effect CV Noise Test category performance Periodic and random deviations in the output combine to produce a residual AC voltage superimposed on the DC output voltage This residual voltage is specified as the rms or peak to peak outp...

Page 100: ...Time Test category performance This measures the time for the output voltage to recover to within the specified value following a 10 to 90 change in the load current 1 Turn off the power supply and connect the output as in figure A with the oscilloscope across the S and S terminals 2 Turn on the power supply and program the output current to its maximum programmable value Imax and the output volta...

Page 101: ...oltage drop DVM reading across the current shunt by its resistance to convert to amps and record this value Iout Also record the current measurement readback The readings should be within the limits specified in the test record card for the appropriate model under Current Programming and Readback High Current Iout CC Load Effect Test category performance This test measures the change in output cur...

Page 102: ...ent ripple several DC measurements should be made and averaged If you are using a Keysight 3458A you can set up the voltmeter to do this automatically From the instrument s front panel program 100 power line cycles per measurement Press NPLC 100 ENTER 4 Turn on the power supply and program the output current to its full scale value and the output voltage to its maximum programmable value Vmax 5 Wi...

Page 103: ...0 mA 99 8 A 179 64 A Iout 400 mA Iout 720 mA __________ __________ __________ __________ __________ __________ __________ __________ 600 mA 1 080 A Iout 300 mA Iout 540 mA 100 2 A 180 3 A Iout 400 mA Iout 720 mA CC Load Effect N5741A N5761A 25 mA 41 mA __________ __________ 25 mA 41 mA CC Source Effect N5741A N5761A 12 mA 20 mA __________ __________ 12 mA 20 mA WARNING Return the voltage and curre...

Page 104: ... 495 mA 89 82 A 164 67 A Iout 360 mA Iout 660 mA __________ __________ __________ __________ __________ __________ __________ __________ 540 mA 990 mA Iout 270 mA Iout 495 mA 90 18 A 165 33 A Iout 360 mA Iout 660 mA CC Load Effect N5742A N5762A 23 mA 38 mA __________ __________ 23 mA 38 mA CC Source Effect N5742A N5762A 11 mA 18 5 mA __________ __________ 11 mA 18 5 mA WARNING Return the voltage a...

Page 105: ...A 59 88 A 119 76 A Iout 240 mA Iout 480 mA __________ __________ __________ __________ __________ __________ __________ __________ 360 mA 720 mA Iout 180 mA Iout 360 mA 60 12 A 120 24 A Iout 240 mA Iout 480 mA CC Load Effect N5743A N5763A 17 mA 29 mA __________ __________ 17 mA 29 mA CC Source Effect N5743A N5763A 8 mA 14 mA __________ __________ 8 mA 14 mA WARNING Return the voltage and current s...

Page 106: ...4 A 75 848 A Iout 152 mA Iout 304 mA __________ __________ __________ __________ __________ __________ __________ __________ 228 mA 456 mA Iout 114 mA Iout 228 mA 38 076 A 76 152 A Iout 152 mA Iout 304 mA CC Load Effect N5744A N5764A 12 6 mA 20 2 mA __________ __________ 12 6 mA 20 2 mA CC Source Effect N5744A N5764A 5 8 mA 9 6 mA __________ __________ 5 8 mA 9 6 mA WARNING Return the voltage and ...

Page 107: ...50 mA 24 95 A 49 9 A Iout 100 mA Iout 200 mA __________ __________ __________ __________ __________ __________ __________ __________ 150 mA 300 mA Iout 75 mA Iout 150 mA 25 05 A 50 1 A Iout 100 mA Iout 200 mA CC Load Effect N5745A N5765A 10 mA 15 mA __________ __________ 10 mA 15 mA CC Source Effect N5745A N5765A 4 5 mA 7 mA __________ __________ 4 5 mA 7 mA WARNING Return the voltage and current ...

Page 108: ... 962 A 37 924 A Iout 76 mA Iout 152 mA __________ __________ __________ __________ __________ __________ __________ __________ 114 mA 228 mA Iout 57 mA Iout 114 mA 19 038 A 38 076 A Iout 76 mA Iout 152 mA CC Load Effect N5746A N5766A 8 8 mA 12 6 mA __________ __________ 8 8 mA 12 6 mA CC Source Effect N5746A N5766A 3 9 mA 5 8 mA __________ __________ 3 9 mA 5 8 mA WARNING Return the voltage and cu...

Page 109: ...475 A 24 95 A Iout 50 mA Iout 100 mA __________ __________ __________ __________ __________ __________ __________ __________ 75 mA 150 mA Iout 37 5 mA Iout 75 mA 12 525 A 25 05 A Iout 50 mA Iout 100 mA CC Load Effect N5747A N5767A 7 5 mA 10 mA __________ __________ 7 5 mA 10 mA CC Source Effect N5747A N5767A 3 25 mA 4 5 mA __________ __________ 3 25 mA 4 5 mA WARNING Return the voltage and current...

Page 110: ...9 481 A 18 962 A Iout 38 mA Iout 76 mA __________ __________ __________ __________ __________ __________ __________ __________ 114 mA 96 mA Iout 28 5 mA Iout 57 mA 9 519 A 19 038 A Iout 38 mA Iout 76 mA CC Load Effect N5748A N5768A 6 9 mA 8 8 mA __________ __________ 6 9 mA 8 8 mA CC Source Effect N5748A N5768A 2 95 mA 3 9 mA __________ __________ 2 95 mA 3 9 mA WARNING Return the voltage and curr...

Page 111: ... 485 A 14 97 A Iout 30 mA Iout 60 mA __________ __________ __________ __________ __________ __________ __________ __________ 45 mA 90 mA Iout 22 5 mA Iout 45 mA 7 515 A 15 03 A Iout 30 mA Iout 60 mA CC Load Effect N5749A N5769A 6 5 mA 8 mA __________ __________ 6 5 mA 8 mA CC Source Effect N5749A N5769A 2 75 mA 3 5 mA __________ __________ 2 75 mA 3 5 mA WARNING Return the voltage and current sett...

Page 112: ... 15 mA Iout 30 mA 4 99 A 9 98 A Iout 20 mA Iout 40 mA __________ __________ __________ __________ __________ __________ __________ __________ 30 mA 60 mA Iout 15 mA Iout 30 mA 5 01 A 10 02 A Iout 20 mA Iout 40 mA CC Load Effect N5750A N5770A 6 mA 7 mA __________ __________ 6 mA 7 mA CC Source Effect N5750A N5770A 2 5 mA 3 mA __________ __________ 2 5 mA 3 mA WARNING Return the voltage and current ...

Page 113: ... 2 495 A 4 99 A Iout 10 mA Iout 20 mA __________ __________ __________ __________ __________ __________ __________ __________ 15 mA 30 mA Iout 7 5 mA Iout 15 mA 2 505 A 5 01 A Iout 10 mA Iout 20 mA CC Load Effect N5751A N5771A 5 5 mA 6 mA __________ __________ 5 5 mA 6 mA CC Source Effect N5751A N5771A 2 25 mA 2 5 mA __________ __________ 2 25 mA 2 5 mA WARNING Return the voltage and current setti...

Page 114: ...48 A Iout 5 2 mA Iout 10 4 mA __________ __________ __________ __________ __________ __________ __________ __________ 7 8 mA 15 6 mA Iout 3 9 mA Iout 7 8 mA 1 3026 A 2 6052 A Iout 5 2 mA Iout 10 4 mA CC Load Effect N5752A N5772A 5 26 mA 5 5 mA __________ __________ 5 26 mA 5 5 mA CC Source Effect N5752A N5772A 2 13 mA 2 26 mA __________ __________ 2 13 mA 2 26 mA WARNING Return the voltage and cur...

Page 115: ...completed the instrument saves the calibration constants and begins using them Exit the calibration mode Note that a Reset command RST also sets the calibration state to OFF Calibration Procedure Unless instructed otherwise connect the sense terminal to the output and the sense terminal to the output When calibrating the unit using SCPI commands most calibration steps involve sending an OPC query ...

Page 116: ...ect the Keysight 3458A across the shunt The shunt should be able to measure at least 120 of the power supply s rated full scale current Step 2 Enable current calibration mode RST OUTP ON CAL STAT ON Step 3 Set the output voltage high enough to compensate for any voltage drops on the load leads and current shunt VSET 0 5 Step 4 Select current calibration CAL CURR Step 5 Select the first current cal...

Page 117: ...ng for Shipment 118 Operating Checklist 118 Error Messages 120 This chapter discusses the procedures involved for returning a failed instrument to Keysight Technologies for service or repair A procedure is included for diagnosing specific symptoms Actual repair is done through unit exchange ...

Page 118: ...l for shipping Secure the container with strong tape or metal bands If the original shipping container is not available place your unit in a container that will ensure at least 4 inches of compressible packaging material around all sides for the instrument Use static free packaging materials to avoid additional damage to your unit Keysight Technologies suggests that you always insure shipments Ope...

Page 119: ...ont panel CV LED is on Is the unit in constant voltage mode Check the current limit and voltage setting Large ripple present in output Is the power supply in remote sense Is the voltage drop on the load wire high Check load and sense wires connection for noise and impedance effects Minimize the drop on the load wires No output Display indicates OUP Over voltage circuit has tripped Turn off the POW...

Page 120: ...eric format yyyy year mm month dd date 203 Compatibility function not implemented The requested compatibility function is not available 204 NVRAM checksum error A checksum error has occurred in the instrument s nonvolatile random access memory 205 NVRAM full The nonvolatile random access memory of the instrument is full 206 File not found The internal calibration file or the internal channel attri...

Page 121: ... that was not a valid header separator was found in the command string 112 Program mnemonic too long The header contains more than 12 characters 113 Undefined header A command was received that was not valid for this instrument 114 Header suffix out of range The value of the numeric suffix is not valid 120 Numeric data error Generic numeric data error 121 Invalid character in number An invalid cha...

Page 122: ...rary block format but is not allowed for this command 170 Expression error Generic expression error 171 Invalid expression data The expression data element was invalid 178 Expression data not allowed Expression data element was sent but is not allowed for this command Execution Errors these errors set Standard Event Status register bit 4 200 Execution error Generic syntax error 220 Parameter error...

Page 123: ...ion 260 Expression error An expression program data element related error occurred 261 Math error in expression An expression program data element could not be executed due to a math error Query Errors these errors set Standard Event Status register bit 2 400 Query Error Generic error query 410 Query INTERRUPTED A condition causing an interrupted query error occurred 420 Query UNTERMINATED A condi...

Page 124: ......

Page 125: ...es are programmatically compatible with the Keysight 603xA power supplies This means that you can remotely program the Keysight N5700 power supplies using the same commands that are used to program the 603xA power supplies CAUTION Do not mix Compatibility with SCPI commands in the same program This will result in unpredictable instrument behavior ...

Page 126: ...ommand and finish reading back the information from the original query Sending a second query without reading the response to the first will generate an error Model number queries will only return the N5700 model numbers Status functions Serial Poll will be controlled by the SCPI status model and will not act like a 603xA power supply SRQ will be controlled by the SCPI status model Parallel poll w...

Page 127: ...r is cleared after being read STAT OPER STAT QUES ESE FOLD Turns the OCP on or off This is only allowed for constant current mode FOLD 2 Constant voltage mode FOLD1 generates error 203 CURR PROT STAT FOLD Queries the OCP setting The response is FOLD 2 CURR PROT STAT HOLD When turned on HOLD 1 causes the VSET ISET FOLD and UNMASK values to be held until a trigger occurs This only applies to the com...

Page 128: ...s The response represents the sum of the binary weights of the status register bits The response is STS n STAT OPER COND STAT QUES COND TEST Always returns 0 TST TRG Causes the settings held with HOLD 1 to be executed UNMASK setting Sets the bits in the mask register to the setting The setting is an integer that represents the sum of the binary weights of the bits The mask register operates in con...

Page 129: ...ining commands common commands 62 from different subsystems 61 root specifier 61 command completion 64 synchronization 64 common commands 65 CLS 76 ESE 77 ESR 77 IDN 80 OPC 77 OPT 80 RCL 80 RST 80 SAV 80 SRE 78 STB 78 TST 80 WAI 78 TRG 81 common mode current 30 compatibility command summary 127 differences 126 connections 6V to 60V models 24 80V to 600V models 25 analog 16 J134 J226 multiple load ...

Page 130: ...8 I impedance effects 29 inductive loads 29 initiate commands INIT 81 INIT CONT 81 inspection 19 IO50 IP Address 57 items supplied 18 J J1 connector 14 J2 connector 14 K keywords 61 L LAN 13 132 LAN interface 51 sockets 56 Telnet 56 59 LAN private 54 LAN site 52 last setting memory 42 LFP 13 LIMIT 13 load wiring 23 local voltage sensing 27 lock front panel 41 M magnetic fields 19 master unit 31 MA...

Page 131: ...4 19 SCPI command completion 64 command path 60 commands 66 device clear 64 message unit 61 multiple commands 60 syntax 60 shut off terminals 42 slave unit 32 sockets 56 source commands 71 SOUR CURR IMM 71 SOUR CURR PROT STAT 71 SOUR CURR TRIG 71 SOUR VOLT IMM 71 SOUR VOLT LIM LOW 72 SOUR VOLT PROT LEV 72 SOUR VOLT TRIG 71 specifications characteristics 91 performance 90 status commands 73 STAT OP...

Page 132: ...tage limit 40 USB ID string 51 USB interface 51 UUL 13 UVL 13 V verification 96 verification equipment 96 VOLTAGE 12 voltage monitoring external 47 voltage programming accuracy 98 voltage readback accuracy 98 voltage sensing 26 W warning 4 Web server 55 web URL s 5 wire sizes 23 ...

Page 133: ...hat the LAN has been configured and is operating normally When blinking identifies the unit for which the indicator has been set to blink by the unit s Web home page 10 REM indicator When lit indicates that the unit is in Remote mode This function is not available in LXI compliant units 11 OCP 488 button Enable OCP Press OCP 488 to turn over current protection OCP on Press again to turn OCP off Re...

Page 134: ...This information is subject to change without notice Keysight Technologies 2004 2014 Edition 7 August 2014 5969 2917 5969 2917 www keysight com ...

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