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Keysight Technologies RP7900 Series, Operating And Service Manual

The Keysight Technologies RP7900 Series is a powerful collection of test equipment. To maximize your experience, be sure to refer to the comprehensive Operating and Service Manual, available for free download from our website. This manual offers detailed instructions and valuable insights to optimize your product usage.

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MSP

There has been a communication loss between the master and slave units. Check that the
master/slave

CAT5 cables

are installed correctly. They should not be installed in the LAN or SDS

connector.

CSF

There has been a current sharing fault due to the master/slave loop being out of regulation. This can
occur if the

termination switches

are set incorrectly. It can also occur temporarily if there has been a

mode crossover from a load transient or due to rapid up/down programming. If this is the case, set the
current limit to a higher value. CSF can also occur if the loop can no longer regulate the current
imbalance between units. CSF can also be an initial indication of communication loss with the master
unit; which will transition to MSP.

If the following error messages occur:

No slaves discovered or 1 slave discovered (if expecting multiple slave units)

Check that there are no duplicate slave addresses.

Error 332, Master/Slave Error

This most often indicates that the master unit has lost communication with a slave, and is usually
accompanied by MSP. Check that the master/slave

CAT5 cables

are installed correctly. This can also

occur when changing the master slave configuration. Always set the master unit to None when
changing master/slave configurations.

Independent Parallel Operation - RP795xA, RP796xA

Never leave any units powered on while the others are off. If AC power is turned on or
off on a single unit, the outputs of the units that are on will be enabled and will
transition to their programmed settings. To prevent this, program the outputs of all
units to zero before powering them off, and always power all units on and off together.

Enable Current Sharing

The current sharing function is automatically enabled for models RP795xA, RP796xA

in master/slave operation.

Units can be operated in parallel without current sharing, but the output current will
not be shared equally, and constant voltage mode may not be maintained on all units.

Current sharing is an analog control function that fine-tunes the output voltage up to about 0.5% of
the unit's voltage rating. This improves the current readback accuracy among paralleled units. This
applies whether units are connected for master/slave operation or whether they are connected for
independent parallel operation.

Keysight RP7900 Series Operating and Service Guide

115

4 Using the Regenerative Power System

Summary of Contents for RP7900 Series

Page 1: ...Keysight Regenerative Power System RP7900 Series Operating and Service Guide ...

Page 2: ......

Page 3: ... Priority Mode 43 Small Signal Programming Response All Models 49 Measurement Accuracy and Resolution with shorter measurement intervals 49 Excessive Dynamic Protection 50 Output Quadrants 50 Dimensions RP793xA and RP794xA 51 Specifications and Characteristics RP795xA RP796xA 52 Specifications RP795xA RP796xA 52 Supplemental Characteristics RP795xA RP796xA 53 Common Characteristics 54 Output Imped...

Page 4: ...ions site and private 84 Digital Port Connections 85 Interface Cover Installation 86 3 Getting Started 87 Using the Front Panel 88 Turn the Unit On 88 Set the Output Voltage 89 Set the Output Current 90 Set Over voltage Protection 91 Enable the Output 92 Use Built in Help System 92 Remote Interface Configuration 93 Introduction 93 USB Configuration 93 GPIB Configuration 93 LAN Configuration 94 Mod...

Page 5: ...nsients 124 Programming a Step Transient 127 Programming a List Transient 128 Programming an Arbitrary Waveform 132 Sequencing the Output 134 Turn On Turn Off Delays 134 Coupling the Output 134 Sequencing Multiple Units 135 Output Turn On Turn Off Behavior 137 External Data Logging 141 External Data Logging 141 Select the Measurement Function and Range 142 Specify the Integration Period 142 Select...

Page 6: ...9 Keywords 170 Queries 170 Command Separators and Terminators 170 Syntax Conventions 171 Parameter Types 172 Device Clear 173 Typical Command Processing Times 173 Commands by Subsystem 175 ABORt Subsystem 176 ARB Subsystem 177 CALibrate Subsystem 179 CURRent Subsystem 183 DIGital Subsystem 187 DISPlay Subsystem 189 FETCh Subsystem 190 FORMat Subsystem 193 FUNCtion Command 194 HCOPy Subsystem 195 I...

Page 7: ...PS feature set comparison with RPS models 260 6 Verification and Calibration 263 Test Equipment and Setups 264 Test Equipment 264 Measurement Setups 265 Performance Verification 266 Introduction 266 Verification Setups 268 Test Considerations 268 Verification Procedure 269 Instrument Calibration 273 Introduction 273 Calibration Interval 274 Calibration Setups 274 Test Considerations 275 Calibratio...

Page 8: ...ppendix A Keysight SD1000A Safety Disconnect System 299 Keysight SD1000A Safety Disconnect System 300 Introduction 300 Keysight SD1000A Safety Disconnect System at a Glance 300 Supplemental Characteristics 302 Installing the Keysight SD1000A Safety Disconnect System 304 Keysight SD1000A to RP7900 Connections 304 External Control Connections 306 Operating the Keysight SD1000A Safety Disconnect Syst...

Page 9: ...document are furnished under a license and may be used or copied only in accordance with the terms of such license License Files From gifencode C source code Code drawn from ppmtogif c from the pbmplus package Based on GIFENCOD by David Rowley mgardi watdscu waterloo edu A Lempel Zim compression based on compress Modified by Marcel Wijkstra wijkstra fwi uva nl Copyright C 1989 by Jef Poskanzer Per...

Page 10: ...y of which can befound at www keysight com find sweula Thelicenseset forth in theEULArepresents theexclusiveauthority by which theU S government may use modify distribute or disclosetheSoftware TheEULAand thelicenseset forth therein does not requireor permit among other things that Keysight 1 Furnish technical information related to commercial computer softwareor commercial computer softwaredocume...

Page 11: ... ground terminal The CE mark is a registered trademark of the European Community ISM1 A This indicates that the instrument is an Industrial Scientific and Medical Group 1 Class A product CISPER 11 Clause 4 ICES NMB 001 This indicates product compliance with the Canadian Interference Causing Equipment Standard The ETL mark is a registered trademark of Intertek The text indicates product compliance ...

Page 12: ... in any manner not specified by the manufacturer The protective features of this product may be impaired if it is used in a manner not specified in the operating instructions Environmental Conditions Never use the instrument outside of the specified environmental conditions described in the Environmental Characteristics of the specifications Heavy Weight Danger to hands and feet To avoid personal ...

Page 13: ...ardous voltages from an external energy source such as a battery may be present on the output terminals even with the unit turned off Provision must be made to disconnect the external energy source before touching the output or sense terminals Do Not Operate in an Explosive Atmosphere Do not operate the instrument in the presence of flammable gases or fumes Do Not Remove the Instrument Cover Only ...

Page 14: ...ning correctly appear damaged or defective should be made inoperative and secured against unintended operation until they can be repaired by qualified service personnel Keysight RP7900 Series Operating and Service Guide 14 Legal and Safety Information ...

Page 15: ...ou can download the latest version of this document at www keysight com Type in your model number in the Search field Manuals are available under the Document Library tab The latest version is also available for mobile devices at www keysight com find RPS mobilehelp For the latest firmware revision go to Firmware Updates If you have questions about your shipment or if you need information about wa...

Page 16: ...y for the entire range of output voltage and current l Output autoranging for greater flexibility l Output can operate in voltage priority or current priority mode l High speed up and down output programming l Output resistance programming l Turn on turn off delays allow output on off sequencing across multiple units l Current sharing capability for paralleled outputs l Protection capability inclu...

Page 17: ...eration the power factor of 0 99 is maintained Sinewave current distortion is less than 2 at full load This ensures the quality of the AC signal that is returned to the AC mains When an AC mains dropout is sensed galvanic relays disconnect the AC mains and the unit shuts down To safeguard your device under test the RPS provides anti islanding that senses that the grid is live before regenerating p...

Page 18: ...ve output terminals 3 Sensing Remote sense terminals connected for local sensing 4 GPIB GPIB interface connector 5 Digital IO Digital IO connector Pins are user configurable 6 USB USB interface connector 7 LAN 10 100 1000 Base T Left LED indicates activity Right LED indicates link integrity 8 Master slave Master slave connectors for grouping paralleled units 9 Termination switches Specifies master...

Page 19: ...s disabled by an external inhibit signal Unr the output is unregulated Prot the output is disabled by a protection condition on another unit EDP the output is disabled by excessive output dynamics protection IPK the output is in positive or negative peak current limit CSF a current sharing fault has occurred MSP A master slave protection has occurred SDP A safety disconnect system fault has occurr...

Page 20: ...ys any error messages in the error queue The Navigation keys do the following The Arrow keys move around in the command menus They also select alpha characters in alpha numeric entry fields The Select key lets you make a selection in the command menus It also lets you enter edit mode for editing the numeric parameters The Output keys do the following On Off controls the output Voltage lets you cha...

Page 21: ...putturn on turn off mode CurrSharing Enables disables outputcurrentsharing Measure Sweep Configures measurementsampling Window Selectmeasurementwindow Control Initiates triggers and aborts acquisitions displays trig state AhWh Measures or resets amp hours and watthours Transient Mode Selects voltageand currenttransientmodes Step Configures voltageor currentsteps and trigger signals List Pace Speci...

Page 22: ...nfiguration changes and restarts unit Cancel Cancels theconfiguration changes Reset Performs an LXI LCI resetof LANsettings and restarts Defaults Resets thenetwork to theas shipped defaults and restarts USB Displays USB identification string GPIB Display or changetheGPIB address DigPort Pins Configures theindividual digital portpins Data Reads writes data to thedigital port Groups Function Specifi...

Page 23: ...currentprogramming and measurement Misc Calibrates CurrSharing ResBout and CurrTC Count Viewthecalibration count Date Saves thecalibration date Save Saves thecalibration data IO Enables disables USB GPIB and LANservices Sanitize Performs NISPOM secureeraseof all user data Update Password protected firmwareupdate Password Changes theadmin password About Displays model options serial number and firm...

Page 24: ...word value Sets a numeric password to prevent unauthorized calibration RESistance BOUT Calibrates the bottom out resistance RP795xA RP796xA SAVE Saves the calibration constants in non volatile memory STATe 0 OFF 1 ON Enables or disables calibration mode VOLTage LEVel value Calibrates the local voltage programming and measurement DISPlay WINDow STATe 0 OFF 1 ON Turns the front panel display on or o...

Page 25: ...RDer NORMal SWAPped Specifies how binary data is transferred HCOPy SDUMp DATA BMP GIF PNG Returns an image of the front panel display DATA FORMat BMP GIF PNG Specifies the format for front panel images returned IEEE 488 Common Commands CLS Clear status command ESE value Event status enable command and query ESR Event status event query IDN Identification Query OPC Sets the OPC operation complete b...

Page 26: ...connected slave units RESet Reset the master configuration SLAVe ADDRess bus address Sets the slave bus address LXI IDENtify STATe 0 OFF 1 ON Turns the front panel LXI identify indicator on or off MDNS STATe 0 OFF 1 ON Sets the MDNS state MEASure SCALar CURRent DC Takes a measurement returns the averaged current ACDC Takes a measurement returns the RMS current AC DC HIGH Takes a measurement return...

Page 27: ...elay offset required for this instrument DELay FALL value Sets the output turn off sequence delay RISE value Sets the output turn on sequence delay TMODE COUPle 0 OFF 1 ON Couples the turn on and turn off settings RP793xA RP794xA OFF LOWZ HIGHZ Selects the output turn off mode RP793xA RP794xA ON LOWZ HIGHZ Selects the output turn on mode RP793xA RP794xA INHibit MODE LATChing LIVE OFF Sets the oper...

Page 28: ...asurement samples WHOur RESet Resets the accumulated watt hour measurement WINDow TYPE HANNing RECTangular Selects the measurement window SOURce ARB COUNt value INFinity Specifies the number of times the Arb repeats CURRent CDWell LEVel value value Block Specifies the level of each point in the Arb DWELl value Specifies the dwell time of each point in the Arb POINts Returns the number of points in...

Page 29: ...SOURce DIGital INPut DATA Reads the state of the digital control port OUTPut DATA value Sets the state of the digital control port PIN 1 7 FUNCtion function Sets the pin function DIO DINPut FAULt INHibit ONCouple OFFCouple TOUTput TINPut POLarity POSitive NEGative Sets the pin polarity TOUTput BUS ENABle 0 OFF 1 ON Enables or disables BUS triggers on digital port pins SOURce FUNCtion CURRent VOLTa...

Page 30: ...put voltage when in voltage priority mode TRIGgered AMPLitude value Sets the triggered output voltage BWIDth LOW HIGH1 Sets the voltage compensation RP795xA RP796xA RANGe 0 1 2 Sets the voltage compensation RP793xA RP794xA LEVel 0 1 2 value Sets the compensation frequency RP793xA RP794xA LIMit POSitive IMMediate AMPLitude value Sets the voltage limit when in current priority mode LOW value Sets th...

Page 31: ...r PTRansiton value Sets the Positive transition filter SYSTem COMMunicate LAN TCPip CONTrol Returns the initial socket control connection port number RLSTate LOCal REMote RWLock Configures the remote local state of the instrument DATE yyyy mm dd Sets the date of the system clock ERRor Reads and clears one error from the error queue LFRequency Returns the power line reference frequency LFRequency M...

Page 32: ...he trigger source for the acquisition system BUS CURRent1 EXTernal PIN 1 7 TRANsient1 VOLTage1 TOUTput ENABle 0 OFF 1 ON Enables measurement triggers to be sent to a digital port pin VOLTage LEVel value Sets the triggered level of the output SLOPe POSitive NEGative Sets the slope of the signal ARB SOURce source Selects the trigger source for arbitrary waveforms BUS EXTernal IMMediate PIN 1 7 ELOG ...

Page 33: ...s Yes Yes Yes Yes Outputautoranging 1 6 to 1 2 to 1 2 to 1 2 to 1 2 to 1 Outputlists Yes Yes Yes Yes Yes Arbitrary waveforms Yes Yes Yes Yes Yes Adjustablebandwidth Voltage Current Voltage Current Voltage Current Voltageonly Voltageonly Parallel operation Yes Yes Yes Yes Yes Master slavemode Yes Yes Yes Yes Yes Voltage current programming Yes Yes Yes Yes Yes Outputresistance programming Yes Yes Ye...

Page 34: ...tpower and sensedisconnectrelays This accessory requires Option 500 to beused on the500 V models and Option 950 to beused on the 950 V models This accessory cannotbeused on theRP793xA and RP794xA models KeysightRP7909A Rack mountand slidekit for mounting units in 19 inch EIA cabinets Keysight1CP108A Rack mountflangekitwith handles KeysightE3663AC Basic rail kitfor system II Keysightinstrumentracks...

Page 35: ...A 0 to 10 kW Output ripple noise CVpeak to peak 1 CVrms 2 30 mV 3 mV 80 mV 8 mV 30 mV 3 mV 80 mV 8 mV 200 mV 20 mV Load regulation Voltage Current 1 mV 25 mA 3 mV 13 mA 1 mV 50 mA 3 mV 25 mA 6 mV 13 mA Voltage programming measurement accuracy3 0 02 2 mV 0 02 8 mV 0 02 2 mV 0 02 8 mV 0 02 16 mV Current programming measurement accuracy 3 0 04 45 mA 0 03 13 mA 0 04 90 mA 0 03 25 mA 0 03 13 mA Transie...

Page 36: ...100 V 315 Ato 315 A 25 Vto 25 V 2028 Ato 2028 A 100 Vto 100 V 630 Ato 630 A 200 Vto 200 V 315 Ato 315 A Measurement digitization noise2 Voltage Current 4 mV 400 mA 20 mV 200 mA 4 mV 800 mA 20 mV 400 mA 40 mV 200 mA Programming measurement tempCo3 Voltage Current 0 0015 80 µV C 0 0075 1 2mA C 0 0015 300µV C 0 0025 400µA C 0 0015 80 µV C 0 0075 2 3mA C 0 0015 300µV C 0 0025 800µA C 0 0015 600µV C 0 ...

Page 37: ... Timefrom when theOutput On command is received to theinitiation of turning theoutput on 9 Unit is susceptibleto internal damageif maximum load inductancelimits areexceeded at therated current refer to inductive load graphs for additional information 10 Unit powered on with theoutput disabled for 1 second after full load operation 11 Unit powered on with theoutput disabled for 10 seconds after ful...

Page 38: ... the CE mark Conforms to US and Canadian safety regulations Declarations of Conformity for this product may be downloaded from the Web Go to http www keysight com go conformity and click on Declarations of Conformity AC Input Phase and range Frequency Input VA Input current per phase 200 VAC input 400 VAC input Efficiency at full power Power Factor Fuse 3 phase 200 VAC nominal 10 and 208 VAC nomin...

Page 39: ... compensation modes for voltage priority and current priority modes Impedances are captured when measuring at the load leads 6 inches away from the bus bars VoltagePriority Mode 20 V units CurrentPriority Mode 20 V units 20 V 5 kWunit 10 V 200 A6 leads local sense 20 V 5 kWunit 10 V 200 A 6 leads 20 V 10 kWunit 10 V 400 A 6 leads local sense 20 V 10 kWunit 10 V 400 A 6 leads Keysight RP7900 Series...

Page 40: ...it 40 V 125 A 6 leads 80 V 10 kWunit 40 V 250 A 6 leads local sense 80 V 10 kWunit 40 V 250 A 6 leads VoltagePriority Mode 160 V units CurrentPriority Mode 160 V units 160 V 10 kWunit 80 V 125 A6 leads local sense 160 V 10 kWunit 80 V 125 A 6 leads 1 Quick Reference 40 Keysight RP7900 Series Operating and Service Guide ...

Page 41: ...in output instability Note that lead and DUT resistance are indistinguishable in this context It is also important to consider the voltage drop and power dissipation in the leads from increased lead resistance Refer to Inductance Considerations for details To prevent damage to the unit refer to Maximum Load Inductance Compensation for CurrentPriority Mode0 20 V units Compensation for CurrentPriori...

Page 42: ...or CurrentPriority Mode0 80 V units Compensation for CurrentPriority Mode1 80 V units 80 V 5 kWunit 80 V 5 kWunit 80 V 10 kWunit 80 V 10 kWunit 1 Quick Reference 42 Keysight RP7900 Series Operating and Service Guide ...

Page 43: ...e for voltage priority mode Operation below the marginal stability lines with the Compensation bandwidth settings may result in output instability Conditions with and without load leads illustrate the additional effects of inductance on CV mode stability There are no absolute limits for DUT capacitance as the stability is also a function of ESR Refer to Load Capacitance and Lead Inductance Conside...

Page 44: ...rectly connected to bus bars With remotesensing and load leads around 6 μH 2 mΩ 20 V 5 kWunit comp 0 20 V 5 kWunit comp 0 20 V 5 kWunit comp 1 20 V 5 kWunit comp 1 20 V 5 kWunit comp 2 20 V 5 kWunit comp 2 1 Quick Reference 44 Keysight RP7900 Series Operating and Service Guide ...

Page 45: ...ctly connected to bus bars With remotesensing and load leads around 3 μH 1 mΩ 20 V 10 kWunit comp 0 20 V 10 kWunit comp 0 20 V 10 kWunit comp 1 20 V 10 kWunit comp 1 20 V 10 kWunit comp 2 20 V 10 kWunit comp 2 Keysight RP7900 Series Operating and Service Guide 45 1 Quick Reference ...

Page 46: ...rectly connected to bus bars With remotesensing and load leads around 6 μH 2 mΩ 80 V 5 kWunit comp 0 80 V 5 kWunit comp 0 80 V 5 kWunit comp 1 80 V 5 kWunit comp 1 80 V 5 kWunit comp 2 80 V 5 kWunit comp 2 1 Quick Reference 46 Keysight RP7900 Series Operating and Service Guide ...

Page 47: ...ctly connected to bus bars With remotesensing and load leads around 3 μH 1 mΩ 80 V 10 kWunit comp 0 80 V 10 kWunit comp 0 80 V 10 kWunit comp 1 80 V 10 kWunit comp 1 80 V 10 kWunit comp 2 80 V 10 kWunit comp 2 Keysight RP7900 Series Operating and Service Guide 47 1 Quick Reference ...

Page 48: ...y connected to bus bars With remotesensing and load leads around 6 μH 2 mΩ 160 V 10 kWunit comp 0 160 V 10 kWunit comp 0 160 V 10 kWunit comp 1 160 V 10 kWunit comp 1 160 V 10 kWunit comp 2 160 V 10 kWunit comp 2 1 Quick Reference 48 Keysight RP7900 Series Operating and Service Guide ...

Page 49: ...z 6 2 kHz 4 8 kHz 5 6 kHz Current 1 9 kHz 2 5 kHz 3 0 kHz 3 5 kHz N A N A Measurement Accuracy and Resolution with shorter measurement intervals The following table shows changes to the short term measurement accuracy and resolution with various number of power line cycle NPLC measurement settings Changes are due to the A to D converter s noise performance The table s baseline is 1 NPLC with no ad...

Page 50: ...s EDP does not limit the allowable programmable waveform amplitude or frequency You can program a full scale square wave at a maximum frequency of 97 6 kHz indefinitely Output Quadrants Model V1 V2 V3 I1 I2 Minimum sink resistance RP7931A RP7941A 20 V 12 5 V 0 5 V 400 A 250 A 1 25 mΩ RP7933A RP7943A 20 V 12 5 V 0 5 V 800 A 500 A 625 µΩ RP7932A RP7942A 80 V 40 V 0 75 V 125 A 62 5 A 6 mΩ RP7935A RP7...

Page 51: ...Dimensions RP793xA and RP794xA Keysight RP7900 Series Operating and Service Guide 51 1 Quick Reference ...

Page 52: ...noise CVpeak to peak 1 CVrms 2 500 mV 100 mV 500 mV 100 mV 1000 mV 200 mV Load regulation Voltage Current 30 mV 9 mA 30 mV 17 mA 60 mV 9 mA Voltage programming accuracy 3 0 03 60 mV 0 03 60 mV 0 03 120 mV Voltage measurement accuracy 3 0 03 80 mV 0 03 80 mV 0 03 160 mV Current programming measurement accuracy 3 0 1 12 mA 0 1 24 mA 0 1 12 mA Transient response4 Recovery Time Settling band 500 µs 1 ...

Page 53: ...offset Ohm 175 mV 175 mV 350 mV Voltage Programming Speed Comp 0 1 2 Rise fall time 10 to 90 of step Settling time to 0 1 of step 1 ms 6 ms 1 ms 6 ms 1 ms 6 ms Voltage Programming Speed Comp 1 1 2 Rise fall time 10 to 90 of step Settling time to 0 1 of step 15 ms 50 ms 15 ms 50 ms 15 ms 50 ms Current Programming Speed1 Rise time 10 to 90 of step 2 ms 2 ms 2 ms Maximum slew rate Voltage Current 200...

Page 54: ...rated at 1 of rating per degree C from 40 C to 55 C 95 or less non condensing Up to 2000 meters 30 C to 70 C Acoustic statement European Machinery Directive Acoustic noise emission LpA 79 dB at Operator position LpA 73 dB at Bystander position LpA 61 4 at Idle fan speed Normal operation mode per ISO 7779 Digital Port Max voltage rating Pins 1 2 as FLT Pins 1 7 as outputs Pins 1 7 as inputs Pin 8 1...

Page 55: ... 5 kVA RP7952A RP7962A RP7953A RP7963A 11 5 kVA RP7951A 17 3 A RP7952A RP7953A 35 A RP7961A 8 66 A RP7962A RP7963A 17 3 A RP7951A RP7952A RP7953A 86 3 RP7961A RP7962A RP7963A 91 5 0 99 nominal input and rated power Internal fuse not user accessible During a 1 cycle line dropout the unit may reboot The output will remain off after reboot until the operator reinstates the previous settings either by...

Page 56: ...y Mode 500 V 5 kWunit 250 V 10 A 500 V 5 kWunit 100 V 15 A 500 V 10 kWunit 250 V 20 A 500 V 10 kWunit 100 V 15 A 950 V 10 kWunit 500 V 5 A 950 V 10 kWunit 100 V 15 A 1 Quick Reference 56 Keysight RP7900 Series Operating and Service Guide ...

Page 57: ...cross the relays make sure that the output current has been downprogrammed to zero before turning the output off The following figures show the boundary limitations for inductive loads L with series resistance Rs when operating in current priority mode Operation below the marginal stability line may result in output instability Note that increased load resistance allows increased output inductance...

Page 58: ...operating with either the High or Low bandwidth setting may result in output instability 500 V units 950 V units 500 V 10 kWunit 950 V 10 kWunit 500 V 5 kWunit Voltage Programming Response All Models The following graph shows the output voltage programming response characteristic This applies for small signals only under no load conditions 1 Quick Reference 58 Keysight RP7900 Series Operating and ...

Page 59: ...ch disables the output EDP protection may be engaged by programmed voltage changes lists Arbs or load induced voltage swings Maximum Peak to Peak ProgrammableVoltage versus SquareWaveFrequency Output Quadrants Model V1 V2 V3 I1 I2 Minimum sink resistance RP7951A RP7961A 500 V 250 V 8 V 20 A 10 A 0 4 Ω RP7952A RP7962A 500 V 250 V 8 V 40 A 20 A 0 2 Ω RP7953A RP7963A 950 V 500 V 16 V 20 A 10 5 A 0 8 ...

Page 60: ...Dimensions RP795xA and RP796xA 1 Quick Reference 60 Keysight RP7900 Series Operating and Service Guide ...

Page 61: ...ing Single Unit Connections Multiple Unit Connections Interface Connections Heavy Weight Danger to hands and feet To avoid personal injury and damage to the instrument always use a sturdy cart or other suitable device to move the instrument Do not lift the instrument alone always use two people to lift the instrument ...

Page 62: ...avecommunication Keysight8121 2314 Inputsafety cover with bushing Safety cover for AC inputwith strain relief bushing Cover only Keysight5066 1925 Bushing only Keysight1410 1901 Outputsafety cover Safety cover for high voltageoutputbus bars Safety cover for high currentoutputbus bars Keysight5066 1927 Keysight5188 9544 Sharing connector cable RP795xA RP796xA only High voltagecablewith 3 pin connec...

Page 63: ...provided so that no accidental contact with lethal voltages can occur Observe Environmental Conditions Do not operate the instrument in the presence of flammable gases or fumes The environmental conditions for the power supply are documented under RP793xA RP794xA and RP795xA RP796xA common characteristics Basically the unit should only be operated indoors in a controlled environment Do not operate...

Page 64: ...e unit s chassis do not lift the unit using the output terminals Do not block the air intake at the front or the exhaust at the rear of the instrument Tools required Phillips driver T22 Torx driver T10 Torx driver 1 Remove the four feet from the bottom of the instrument 2 Install the ESD cover flange to the side of the instrument using the two screws provided The flange and the screws 0515 1946 ar...

Page 65: ...or attaching the front panel 0590 0804 6 Slide the instrument into the rack 7 Attach the front panel to the instrument to the rack using the four dress screws provided 3030 1768 Keysight RP7900 Series Operating and Service Guide 65 2 Installing the Instrument ...

Page 66: ...te that there must be a way to physically disconnect the AC mains cable from the unit A disconnect device either a switch or circuit breaker must be provided in the final installation The disconnect device must be close to the equipment be easily accessible and be marked as the disconnect device for this equipment It must meet the input ratings requirements listed in the following table Model Unit...

Page 67: ... to the unit l Attach the ring terminated line wires to the AC mains terminals U S color code shown The bolt diameter is M5 Place the ring terminals between the star washers Connect the ground wire to the chassis stud below the AC line filter assembly If provided do not connect the neutral wire l Tighten the terminal bolts to 23 in lb 2 6 Nm l Note that on earlier units the AC mains terminals have...

Page 68: ...y time the sense cable should be disconnected from the output bus bars is when remote sensing If the sense cable is not installed prior to instrument turn on or becomes disconnected the unit will continue to operate The open circuit voltage at the output terminals will be anywhere from 0 to 0 54 higher than the programmed value because the regulation point is now maintained through internal sense ...

Page 69: ...ying the full rated current of the unit Paralleled load wires may be required for larger ampacity models The following table lists the characteristics of AWG American Wire Gauge copper wire AWG Equivalentmm2 NearestMetric size Ampacity Note1 Resistance Note2 18 0 82 1 0 mm2 up to 14 A 6 385 Ω 16 1 31 1 5 mm2 up to 18 A 4 016 Ω 14 2 1 2 5 mm2 up to 25 A 2 525 Ω 12 3 3 4 mm2 up to 30 A 1 588 Ω 10 5 ...

Page 70: ...power supply 2 Route the wires through the safety cover before attaching them to the bus bars Knockouts are provided on for larger diameter wires The figure illustrates the recommended hardware for con necting wires to the bus bars You must provide all cabling Ensure that the wire mounting hard ware does not short the output terminals 3 When attaching terminal lugs to the bus bars ensure there is ...

Page 71: ...them to reduce lead inductance and noise pickup The goal is to minimize the loop area or physical space between the and output leads from the bus bars to the load If load considerations require the use of distribution terminals that are located away from the power supply twist or bundle the wires from the output terminals to the remote distribution terminals Connect each load to the distribution t...

Page 72: ...ing CC operation Because sensing is independent of other power supply functions remote sensing can be used regardless of how the power supply is programmed Connect the unit for remote sensing by first removing the local sense cable between the sense and load terminals Then make your connections as shown in the following figure Connect the output terminals to the load using separate connecting wire...

Page 73: ...g to the following formula ΔVregulation 2 Vload Rsense Sprotect Rsense is the resistance in ohms of each sense lead Vload is the voltage drop in each load lead Sprotect is the internal sense protect resistor see table The formula assumes that the voltage drop in the and sense leads and in the and load leads are equal Model Sprotect resistor RP7931A RP7941A RP7933A RP7943A 1 96 kΩ RP7932A RP7942A R...

Page 74: ...eads to minimize the pickup of external noise In extremely noisy environments it may be necessary to shield the sense leads Ground the shield at the power supply end only do not use the shield as one of the sensing conductors The noise specifications documented in the specification tables apply at the output terminals when using local sensing However voltage transients may be produced at the load ...

Page 75: ...ons EQUIPMENT DAMAGE The instrument s internal voltage clamps are susceptible to thermal damage when the output is abruptly turned off at full load current if the lead inductance exceeds the model dependent Maximum Load Inductance characteristic As a wire inductance reference point a single pair of load leads typically yields between 500 nH to 1 μH per meter of paired length round trip depending o...

Page 76: ...an explicit capacitor and resistor or an electrolytic capacitor with the appropriate value of rated ESR The parallel capacitance and ESR must be able to handle DUT specific requirements such as current or voltage ripple In addition parallel capacitance will limit the ability of the RPS to measure fast current edges sourced directly from the DUT as well as slow down the voltage programming speed an...

Page 77: ...onal constraints may be required when programming current steps with high inductance DUTs or leads Programming speed decreases with inductive loads greater than 1 μH When programming large current steps further speed degradation and overshoots may occur due to inherent voltage limitations of the RPS Without lowering the inductance the speed degradation cannot be improved However the overshoot aspe...

Page 78: ...nty units of identical voltage ratings All units must have the same voltage rating but current ratings can be different All units must have the same version firmware installed Refer to Instrument Identification for details l Always turn the AC power on and off together Never leave any units powered on while the others are turned off l For models RP795xA and RP796xA always connect the negative outp...

Page 79: ...wing figures show the recommended use of remote sensing local sensing may be used if absolutely necessary With local sensing however the sharing circuits will work properly only if the voltage drop measured between the local sense points of any unit to the local sense points of any other paralleled unit is less than 0 5 of the maximum voltage rating of the units Parallel connection example RP793xA...

Page 80: ...ed stack Master slave connections use a digital RS485 bus Connections are made using standard CAT5 or better cables as shown in the figure to the left Any unit may be designated as the master unit For further information about master slave configurations refer to Parallel Operation The figure also shows the termination switch settings for the paralleled units Only the first and last units in the s...

Page 81: ...te but will not share current or maintain constant voltage mode operation When the output is disabled the sharing relay opens and disconnects the unit from the Sharing bus Sharing Cable and Cover Installation SHOCK HAZARD Install the safety cover over the current sharing connectors when floating the output terminals The sharing terminals will be at the float potential which cannot exceed the isola...

Page 82: ... l Plug the sharing cable connector into the back of the unit l Connect the safety cover to the unit Cables are shown without covers for clarity Refer to Interface Connections for information about connecting the ESD cover Series Connections Series connections are not permitted under any circumstances SHOCK HAZARD LETHAL VOLTAGES Series connections are not permitted for many reasons One of the pri...

Page 83: ...echnologies USB LAN GPIB Interfaces Connectivity Guide included with the Keysight IO Libraries Suite GPIB Connections The following figure illustrates a typical GPIB interface system 1 Connect your instrument to the GPIB interface card using a GPIB interface cable 2 Use the Connection Expert utility of the Keysight IO Libraries Suite to configure the GPIB card s parameters 3 You can now use Intera...

Page 84: ... using the various programming environments LAN Connections site and private A site LAN is a local area network in which LAN enabled instruments and computers are connected to the network through routers hubs and or switches They are typically large centrally managed networks with services such as DHCP and DNS servers The following figure illustrates a typical site LAN system A private LAN is a ne...

Page 85: ... Connection Expert to discover the instrument If the instrument cannot be found add the instrument using the instrument s host name or IP address 3 You can now use Interactive IO within the Connection Expert to communicate with your instru ment or you can program your instrument using the various programming environments You can also use the Web browser on your computer to communicate with the ins...

Page 86: ...cs tables Interface Cover Installation The ESD cover and hardware are shipped with the unit see Items Supplied 1 Connect the cover flange to the side of the instrument using the two screws provided IMPORTANT This must be done before rack mounting the unit 2 Connect the LAN USB GPIB cable and digital IO wires GPIB shown to the appropriate rear panel connector 3 Install the ESD cover to the back of ...

Page 87: ...Keysight RP7900 Series Operating and Service Guide 3 Getting Started Using the Front Panel Remote Interface Configuration ...

Page 88: ...est occurs automatically when you turn the unit on This test assures you that the power supply is operational It may take about 30 seconds or so for the power supply to initialize before it is ready for use If the instrument does not turn on verify that the power cord is firmly connected power line voltage is automatically sensed at power on Also make sure that the instrument is connected to an en...

Page 89: ...the output voltage at its programmed setting In current priority mode the unit will limit the output voltage when it reaches the specified voltage limit value Refer to Set the Output Mode for more information Method 2 Use the Voltage key to select the voltage entry field In the display below the voltage setting is selected Enter the desired setting using the numeric keypad Then press Enter If you ...

Page 90: ...t is turned on In current priority mode the unit will maintain the output current at its programmed setting In voltage priority mode the unit will limit the output current when it reaches the specified current limit value Refer to Set the Output Mode for more information Method 2 Use the Current key to select the current entry field In the display below the current setting is selected Enter the de...

Page 91: ...ront Panel Menu Reference Menu example setting over voltage protection Press the Menu key to access the front panel command menu The first line identifies the menu path When the menu is first accessed the menu is at the top or root and the path is empty The second line indicates the commands that are available at the present menu level In this case the top level menu commands are shown with the Ou...

Page 92: ... zero The status indicator shows the output s status In this case CV indicates the output is in constant voltage mode For a description of the status indicators refer to Front Panel Display at a Glance Use Built in Help System Press the Help key at the lowest menu level to display help information about the menu function controls Whenever a limit is exceeded or any other invalid configuration is f...

Page 93: ...hernet connection monitoring the instrument s LAN port is continually monitored and automatically reconfigured when the instrument is unplugged for a minimum of 20 seconds and then reconnected to a network USB Configuration There are no configurable USB parameters You can retrieve the USB connect string using the front panel menu FrontPanel Menu Reference SCPI Command Select System IO USB The dial...

Page 94: ...e a different IP address every time it connects to the network Viewing Active Settings To view the currently active LAN settings FrontPanel Menu Reference SCPI Command Select System IO LAN Settings Displays the active LAN settings Use the up and down arrow key to scroll through the list Not available The currently active settings for the IP Address Subnet Mask and Default Gateway may be different ...

Page 95: ... This value is the Internet Protocol IP address of the instrument An IP address is required for all IP and TCP IP communications with the instrument An IP Address consists of 4 decimal numbers separated by periods Each decimal number ranges from 0 through 255 with no leading zeros for example 169 254 2 20 l Subnet Mask This value is used to enable the instrument to determine if a client IP address...

Page 96: ...ames into IP addresses It is also needed for the instrument to find and display its hostname assigned by the network Normally DHCP discovers the DNS address information you only need to change this if DHCP is unused or not functional To manually configure the DNS services FrontPanel Menu Reference SCPI Command Select System IO LAN Modify DNS Select Primary Address or Secondary Address See below fo...

Page 97: ...s registered A service name may contain upper and lower case let ters numbers and dashes l Each instrument is shipped with a default service name with the format Keysight modelnumber description serialnumber where modelnumber is the unit s 7 character model number e g RP7951A description is the description and serialnumber is the 10 character serial number loc ated on the label on the top of the u...

Page 98: ...nterface is enabled when shipped To launch the Web interface 1 Open the Web browser on your computer 2 Enter the instrument s hostname or IP address into the browser s Address field The following home page will appear 3 Click on the Web Control tab on the top of the page to begin controlling your instrument 4 For additional help about any of the pages click on the If desired you can control access...

Page 99: ...Tem COMMunicate TCPip CONTrol After the port number is obtained a control socket connection can be opened As with the data socket all commands to the control socket must be terminated with a newline and all query responses returned on the control socket will be terminated with a newline To send a device clear send the string DCL to the control socket When the power supply has finished performing t...

Page 100: ......

Page 101: ...wer System Programming the Output Parallel Operation Current Sinking Operation Programming Output Protection Programming Output Transients Sequencing the Output Making Measurements External Data Logging Programming the Digital Port System Related Operations Priority Mode Tutorial ...

Page 102: ...or use Set the Output Priority Mode Select either voltage or current priority mode Refer to Priority Mode Operation for more information Voltage priority mode keeps the output voltage constant The output voltage remains at its programmed setting provided the load current remains within the or current limit setting Current priority mode keeps the output current constant The output current remains a...

Page 103: ...priority mode This prevents the voltage from dropping below the low voltage limit when discharging a battery When the low voltage limit is reached the unit transitions from current priority mode to voltage priority mode operation which stops discharging the battery The low voltage limit is annunciated by the UV status bit Note that the low voltage limit also prevents the output from turning on whe...

Page 104: ...owing equation to calculate the maximum slew rate limit to ensure smooth and linear up and down programming performance Max slew rate V s Current limit setting A Load current A Load capacitance F The current slew rate determines the rate at which the current changes to a new programmed setting This applies to both current settings in current priority mode and current limit settings in voltage prio...

Page 105: ... used when using load leads shorter than 3 meters 10 feet Exceeding these limits can lead to voltage programming overshoots and transient response instability Low compensation setting is optimized for use with large capacitive loads up to the limits shown in the table below along with load leads longer than 3 meters 10 feet In this mode the up and down programming speed and voltage control loop ba...

Page 106: ...transient response Default frequency 55 Hz frequency specifies the low pass corner frequency of a filter applied to the programming signal The programmed voltage is a digitized signal which passes through a single pole low pass filter where the pole is specified in Hertz This filter has the effect of slowing down the output with respect to changes in the programmed voltage or current This in combi...

Page 107: ...ited lead inductance This setting may require paralleling additional sets of leads to achieve the desired overall lead length frequency specifies the low pass corner frequency of a filter applied to the programming signal Refer to the previous description under Voltage Compensation modes The following table summarizes the effect that the compensation settings have on the CC Programming Speed Chara...

Page 108: ...s the turn off setting and vice versa FrontPanel Menu Reference SCPI Command Select Output Advanced Tmode Select either High impedance or Low impedance for turn on an turn off modes Check Coupled to couple the turn on and turn off modes Then press Select To select high impedance turn on OUTP TMOD ON HIGHZ To select low impedance turn off OUTP TMOD OFF LOWZ To couple the turn on and turn off modes ...

Page 109: ... after reboot until the operator reinstates the previous settings either by the front panel controls or using a computer program This behavior is consistent with safe operating procedures Keysight RP7900 Series Operating and Service Guide 109 4 Using the Regenerative Power System ...

Page 110: ... for current sourcing as well as current sinking operation Refer to Multiple Unit Connections for detailed information on how to connect the outputs and the master slave cables Remember to also set the termination switches Units of dissimilar power ratings may be paralleled provided they have identical voltage ratings In this case the units will share current proportionally according to their curr...

Page 111: ...vered Master Slave Configuration Configure each paralleled instrument as either a Master or Slave FrontPanel Menu Reference SCPI Command Select System Group Function In the dialog box select either Master Slave or None Then press Select To configure the paralleled unit INST GRO FUNC MAST SLAV NON If the unit is the master a delay may be programmed to allow the slave units enough time to boot up be...

Page 112: ...ve Programming Considerations Program the output voltage and current settings of the master unit the same as you would an individual unit Refer to Set the Output Voltage and Set the Output Current for details Slave units are locked you cannot program the settings of the slave units Set both positive and negative current limits high to allow for up down programming transient dynamics Transient dyna...

Page 113: ...ts use the periodic master status poll as a timer to trip MSP If the slave does not receive a status poll every 10 seconds or less it goes into MSP Slaves units may go into MSP 10 seconds after power on Once the slave units are discovered the master unit will establish communication with the slave units thereby clearing the MSP Master Slave Protection If the master unit goes into protection it sen...

Page 114: ...el SYSTEM IO commands only available on front panel menu Parallel Operation at Maximum Current RP793xA RP794xA Due to individual circuit tolerances between the paralleled units in a Master Slave configuration the current contributed by each unit may differ slightly from the ideal amount which assumes that all units share current exactly equally When operating at the maximum current rating of the p...

Page 115: ...AT5 cables are installed correctly This can also occur when changing the master slave configuration Always set the master unit to None when changing master slave configurations Independent Parallel Operation RP795xA RP796xA Never leave any units powered on while the others are off If AC power is turned on or off on a single unit the outputs of the units that are on will be enabled and will transit...

Page 116: ... kW unit ICL_10kW 2 ICL_TOTAL NT N10kW where ICL_5kW is the current limit setting of the 5 kW unit ICL_10kW is the current limit setting of the 10 kW unit ICL_TOTAL is the sum total of all individual current limits NT is the total number of paralleled units of any rating N10kW is the total number of paralleled 10 kW units If there are no 10 kW units used then N10kW 0 Note that in a mixed power con...

Page 117: ...orst case additional voltage regulation effect is as follows VOUT WORST_CASE 0 003 VRATING To determine the total output voltage regulation effect for a specific unit you must add the worst case value from the following table to the CV load regulation specification for each paralleled unit These are the worst case values for each unit based on its voltage rating VRATED VOUT WORST_CASE VRATED VOUT ...

Page 118: ...owing controls are provided to fully utilize the two quadrant output capability of the supply Current Limit control in voltage priority mode When operating in voltage priority mode you can program a negative and positive current limit This will limit any current overshoots that may occur during rapid up or down programming Current setting control in current priority mode When operating in current ...

Page 119: ... shorted OV protection is always enabled OV Negative over voltage protection trips if the remote sense leads are reversed At turn on it also trips if voltages more negative than 5V for models or 1 of the rated output for models are present at the output terminals After turn on the level increases to 20 for models RP793xA and RP794xA OV protection is not programmable and is always enabled OC Over c...

Page 120: ...V For models under voltage protection prevents the voltage from dropping below the low voltage limit setting when discharging a battery It also prevents the output from turning on if the output voltage is below the programmed low voltage level MSP A Master Slave Protection fault has occurred in the paralleled group The outputs of all paralleled units are disabled MSP is always enabled Refer to Par...

Page 121: ...tage current or output state FrontPanel Menu Reference SCPI Command Select Protect OCP Enter a delay value Then press Select By default the delay timer will be started by an output Settings Change Check CC Transition to start the delay timer by ANY output transition into CL mode To specify a 10 millisecond delay CURR PROT DEL 0 01 To start the delay timer by an output settings change CURR PROT DEL...

Page 122: ...ess Select To enable the output watchdog timer OUTP PROT WDOG ON To set the output watchdog timer to 120 seconds OUTP PROT WDOG DEL 120 Set the Under Voltage Protection This information applies to models RP793xA and RP794xA only The under voltage protection will turn the output off if the output voltage falls below the programmed low voltage setting The voltage circuit monitors the voltage at the ...

Page 123: ...ondition power limit condition protection condition or inhibit signal occurs the output is disabled The appropriate operating status indicator on the front panel will be on To clear the protection function and restore normal operation first remove that condition that caused the protection fault Then clear the protection function as follows FrontPanel Menu Reference SCPI Command Select Protect Clea...

Page 124: ...sely timed complex sequence of output steps or changes Arbitrary Waveform allows the output to generate complex user defined voltage or current waveforms of up to 65 535 data points Common Actions for All Transients l Enable the output transient function l Program the transient parameters l Select the trigger source l Initiate the transient system l Trigger the transient The transient trigger proc...

Page 125: ... For example set the triggered voltage level if you are programming a voltage step FrontPanel Menu Reference SCPI Command Select Transient Step Select the Trig Voltage box to set the voltage Enter a value and press Select To set a voltage step level of 15 V use VOLT TRIG 15 Select the trigger source A TRIGger TRANsient IMMediate command over the bus will always generate an immediate transient trig...

Page 126: ...gister to know when the instrument is ready to receive a trigger after being initiated FrontPanel Menu Reference SCPI Command Select Transient Control The Trig state field indicates Initiated To query the WTG_tran bit bit 4 STAT OPER COND If a bit value of 16 is returned in the query the WTG_tran bit is true and the instrument is ready to receive the trigger signal Refer to Status Tutorial Unless ...

Page 127: ...e the transient action is complete Refer to Status Tutorial for more information Programming a Step Transient Program the Step Levels Use the following commands to program the triggered output step level The output will go to this level when the trigger is received In the front panel menu you can only program the step level based on the priority mode that you are operating in voltage or current pr...

Page 128: ...r each trigger received This is useful if you need an output list to closely follow triggered events With a trigger paced list triggers that are received during the dwell period are ignored You can set the list dwell time to zero ensure that no triggers are lost Lists can also generate trigger signals at specified steps This is accomplished by two additional lists a beginning of step BOST and an e...

Page 129: ...shown in the figure a list may include the following values 9 0 6 0 3 0 FrontPanel Menu Reference SCPI Command Select Transient List Config Select the List Step number and enter a voltage value Press Select Repeat this for each step Use the up down arrows to select the next step To program a voltage list of 5 steps LIST VOLT 9 0 6 0 3 0 Program the dwell times Example 1 If you are programming a vo...

Page 130: ...a dwell value Press Select Repeat this for each step Use the up down arrows to select the next step To program a dwell of 5 values use LIST DWEL 2 3 5 3 7 3 The number of dwell steps must equal the number of voltage steps If a dwell list has only one value that value will be applied to all steps in the list Specify the list pacing You can specify if the list will be dwell or trigger paced The defa...

Page 131: ... 1 0 1 0 Specify how many times you want the list to repeat You can specify how many times you want the list or pulse to repeat At reset the list count is set to 1 repetition Sending the INFinity parameter in the SCPI command makes the list repeat indefinitely FrontPanel Menu Reference SCPI Command Select Transient List Repeat Enter the number of list repetitions 2 and press Select To program the ...

Page 132: ...single dwell value applies to every point in the constant dwell arbitrary waveform see ARB VOLT CDW DWEL for dwell information l Only the Arb that corresponds to the active priority mode either voltage or current priority may be generated Specify the Arb type and dwell To specify the Arb type and dwell FrontPanel Menu Reference SCPI Command Select Transient Arb Config In the dropdown list pick eit...

Page 133: ...ter in the SCPI command makes the Arb repeat indefinitely At reset the Arb count is set to 1 FrontPanel Menu Reference SCPI Command Select Transient Arb Repeat Enter the number of list repetitions 2 and press Select To program the Arb to repeat twice ARB COUN 2 Specify how you want the Arb to end Specify the output state after the Arb has completed There are two choices the output returns to the s...

Page 134: ...d to the common user defined reference point There is no need to specify a common delay offset when outputs turn off Outputs start executing their turn off delays as soon as an Output Off command is received The internal delay offset is shown in the following table VoltagePriority CurrentPriority WithoutSD1000A safety disconnectunit 12 milliseconds 14 milliseconds With SD1000A safety disconnectuni...

Page 135: ...mum delay offset When the common delay offset completes the user programmed turn on delays will start Connect and Configure the Digital Connector Pins The digital connector pins of the sequenced units must be connected together and configured Refer to Output Couple Control for more information Enable Output Sequencing Output turn on sequencing must be enabled on each unit that will participate in ...

Page 136: ...ynchronize the user programmed turn on delays when sequencing power supplies with different internal delay offsets In the following figure you can see how the internal delay offsets are appended to the user programmed delay times The internal delay offsets vary based on priority mode and whether an SD1000A unit is connected to the power supply Although you cannot eliminate the internal delay offse...

Page 137: ... Off Behavior The turn on and turn off sequences are primarily controlled by three factors the user programmed turn on turn off delays the voltage and current priority mode settings and the operation of the Keysight SD1000A unit if installed The following table documents the output impedance setting for the turn on and turn off sequences For models RP793xA and RP794xA only you can specify either L...

Page 138: ...Turn On Turn Off RP793xA and RP794xA 4 Using the Regenerative Power System 138 Keysight RP7900 Series Operating and Service Guide ...

Page 139: ...Turn On Turn Off RP795xA and RP796xA Keysight RP7900 Series Operating and Service Guide 139 4 Using the Regenerative Power System ...

Page 140: ...priority with LowZ the power supply programs the voltage to zero It then waits up to 250 ms to discharge any current from the DUT It then programs the current limits to their minimum settings In voltage priority with HighZ the power supply only programs the current limits to their minimum settings In current priority the power supply programs the current to zero It then waits up to 250 ms to disch...

Page 141: ...easurements This means that you must periodically empty the internal buffer to an external storage device otherwise the data in the buffer will be overwritten The following table details the various data logging functions Function Description Data Storage Buffers measurements for about20 seconds and requires thatthecomputer periodically reads measurements to preventtheinternal buffer from overflow...

Page 142: ...riod is 102 4 microseconds the actual minimum depends on the number of measurements that are being logged The formula is 102 4_microseconds X _of_measurements For example 102 4 microseconds 1 measurement voltage or current 204 8 microseconds 2 measurements voltage and current 409 6 microseconds 4 measurements voltage min max current If the specified integration period is at or near the minimum log...

Page 143: ...og FrontPanel Menu Reference SCPI Command Notavailable To initiatetheElog INIT ELOG To trigger theElog TRIG ELOG Alternatively if thetrigger sourceis BUS you can also program a TRG or an IEEE 488 get command When triggered the Elog starts placing data in the internal measurement buffer Because the buffer is only large enough to hold 20 seconds of accumulated measurement your PC application must pe...

Page 144: ...ormat is returned as comma separated ASCII numeric data sets of average min max values terminated by a newline REAL data is returned as a definite length block with the byte order specified by the FORMat BORDer command Terminate the Elog FrontPanel Menu Reference SCPI Command Notavailable To abort the Elog ABOR ELOG 4 Using the Regenerative Power System 144 Keysight RP7900 Series Operating and Ser...

Page 145: ...Panel Menu Reference SCPI Command Select the Meter key Repeatedly press the key to cycle through the following measurement functions Voltage Current Voltage Power Voltage Current Power If dashes are displayed the front panel measurement is interrupted because a remote interface measurement is taking place To measure average DC output voltage current or power MEAS VOLT MEAS CURR MEAS POW To return ...

Page 146: ...more waveform cycles are in the measurement FrontPanel Menu Reference SCPI Command Select Measure Window Select either Rectangular or Hanning Then press Select To set the sense window to Hanning SENS WIND HANN A hour W hour measurement Amp hour and watt hour measurements are available on all RPS models These measurements are made independently of other measurements The amp hour and watt hour measu...

Page 147: ...aximum and minimum data points The bin containing the most data points above the 50 point is the high bin The average of all the data points in the high bin is returned as the High level If no high bin contains more than 1 25 of the total number of acquired points then the maximum data point is returned LOW level is a calculation that generates a histogram of the waveform using 16 bins between the...

Page 148: ...measurement samples or points and the time interval between samples in a typical measurement You can fine tune the measurement by specifying the number of points in the measurement acquisition as well as the time interval between points You can configure the measurement acquisition as follows FrontPanel Menu Reference SCPI Command Select Measure Sweep Enter the number of points Then press Select E...

Page 149: ...val If the maximum number of points for that time interval is reached it increases the time interval Measurement Triggering l Capture pre trigger data if desired l Select the trigger source l Initiate the acquisition system l Trigger the measurement l Fetch the measurement l Multiple trigger events per measurement Use the acquisition trigger system to synchronize the digitized measurements with a ...

Page 150: ...value is 0 all measurement samples are taken after the trigger Positive values represent the delay after the trigger occurs but before the samples are acquired This can be used to exclude measurement samples that occur during the delay time Delay time offset x sample period Negative values represent data samples taken prior to the trigger This lets you acquire measurement samples prior to the trig...

Page 151: ...an output transient as trigger TRIG ACQ SOUR TRAN Initiate the acquisition system When the unit is turned on the trigger system is in the idle state In this state the trigger system is disabled ignoring all triggers The INITiate commands enable the trigger system to receive triggers FrontPanel Menu Reference SCPI Command Notavailable To initiate the measurement trigger system INIT ACQ It takes a f...

Page 152: ...488 get command As previously discussed a trigger can also be generated by a digital pin an output transient and an output voltage or current level If a digital pin is configured as the trigger source the instrument will wait indefinitely for the trigger signal If the trigger does not occur you must manually return the trigger system to the idle state The following commands return the trigger syst...

Page 153: ... the query response the MEAS_active bit is true and the measurement is NOT complete When the MEAS_active bit is false you can retrieve the measurement Refer to Status Tutorial for more information Multiple trigger events per measurement The Keysight RPS models can capture other triggers that occur during the acquisition return the number and position of those triggers and calculate DC values based...

Page 154: ...ter any of the aforementioned trigger indices FrontPanel Menu Reference SCPI Command Notavailable To return DC voltage or current calculated after the trigger indcies FETC VOLT start_index points FETC CURR start_index points To return instantaneous voltage or current data after the trigger indices FETC ARR VOLT start_index points FETC ARR CURR start_index points 4 Using the Regenerative Power Syst...

Page 155: ...hen any outputis in a protected state Pin 2 serves as theisolated common for pin 1 When pin 1 is setto theFAULtfunction theinstru mentignores any commands to program pin 2 Queries of pin 2 will return FAULt If pin 1 is changed from FAULt to another function pin 2 is setto DINPut INHibit Applies only to pin 3 When pin 3 is configured as an inhibitinput a truesignal atthepin will disabletheoutput ON...

Page 156: ...5 4 3 2 1 0 LSB The digital I O pin can be used to control both relay circuits as well as digital interface circuits The following figure illustrates typical relay circuits as well as digital interface circuit connections using the digital I O functions To configure the pins for digital I O FrontPanel Menu Reference SCPI Command Select System IO DigPort Pins Select a pin in the Pin field In the Fu...

Page 157: ...s a falling edge Pin 8 is the signal common for the trigger pins For an overview of the trigger system refer to Trigger Overview When configured as a trigger input you can apply either a negative going or a positive going pulse to the designated trigger input pin The trigger latency is 5 microseconds The minimum pulse width is 4 microseconds for positive going signals and 10 microseconds for negat...

Page 158: ...Select System IO DigPort Pins Select pin 1 then Function then Fault Out In the Polarity field select either Positive or Negative To configure the Fault function DIG PIN1 FUNC FAUL To select the pin polarity DIG PIN1 POL POS Inhibit Input Pin 3 can be configured as a remote inhibit input The Inhibit Input function lets an external input signal control the output state of instrument The input is lev...

Page 159: ...necessary to disable all outputs Negative polarity must be programmed for all pins in this case You can also use the Fault output to drive an external relay circuit or signal other devices whenever a protection fault occurs Clearing a System Protection Fault To restore all instruments to a normal operating condition when a fault condition occurs in a daisy chained system protection configuration t...

Page 160: ... to the other pins The polarity of the pins is not programmable it is set to NEGative In this example pin 6 is configured as the output On control Pin 7 is configured as the output Off control The ground or Common pins are connected together FrontPanel Menu Reference SCPI Command Select System IO DigPort Pins Select pin 6 then Function then On Couple Select Pins select pin7 then Function then Off ...

Page 161: ...le memory to store instrument states The locations are numbered 0 through 9 Any state previously stored in the same location will be overwritten FrontPanel Menu Reference SCPI Command Select States SaveRecall In the SaveRecall field enter a location from 0 to 9 Then press Select Select Save to save the state to Recall to recall a state To save a state in location 1 SAV 1 To recall a state from loc...

Page 162: ...elect Enter a value in minutes in the Saver Delay field to specify the time when the screen saver will activate Check Wake on I O to activate the display with I O bus activity To turn the front panel screen saver on or off DISP SAV ON OFF Specifying the power on view Note that you can specify which measurement functions are displayed at turn on FrontPanel Menu Reference SCPI Command Select System ...

Page 163: ...ess Select Log out of the Admin menu to activate the password You can now only enter the Admin menu by providing the correct password in the Password field Enter calibration mode using the original password CAL STAT ON password To change the password CAL PASS password To exit calibration mode and activate the password CAL STAT OFF If the password is lost access can be restored by setting an intern...

Page 164: ...ollowing figure shows the voltage priority operating locus of the output The area in the white quadrants shows the output as a source sourcing power The area in the shaded quadrants shows the output as a load sinking power The heavy solid line illustrates the locus of possible operating points as a function of the output load As shown by the horizontal portion of the line the output voltage remain...

Page 165: ...itions and seamlessly transitions between positive and negative currents In current priority mode the output current should be programmed to the desired positive or negative value A positive voltage limit value should also be set The voltage limit should always be set to a value that is greater than the actual output voltage requirement of the external load The following figure shows the current p...

Page 166: ...happen when the load is a power source such as a battery and its output voltage is higher than the voltage limit setting of the power supply Once the current exceeds the built in negative over current limit the output will shut down the output relays will open and the OC status bits will be set In such a case it is important to set the voltage limit properly in order prevent this protection shutdo...

Page 167: ...00 Series Operating and Service Guide 5 SCPI Programming Reference Related Information SCPI Introduction Commands by Subsystem Status Tutorial Trigger Tutorial Reset State SCPI Error Messages Compatibility Commands ...

Page 168: ...ation about interface connections refer to the Keysight Technologies USB LAN GPIB Interfaces Connectivity Guide included with the Keysight IO Libraries Suite Or you can download the guide from the Web at www keysight com find connectivity Web Interface The RPS provides a Web interface that is built into the instrument You can use this interface over LAN for remote access and control of the instrum...

Page 169: ...ree characters in length and may include one or more parameters The command keyword is separated from the first parameter by a blank space Use a semicolon to separate multiple commands as shown below Subsystem Commands Subsystem commands perform specific instrument functions They are comprised of alphabetically arranged commands that extend one or more levels below the root in a hierarchical struc...

Page 170: ...the query indicator at the end of the last keyword before the parameters Insert a space between the query indicator and the first parameter You can query the programmed value of most parameters For example you can query the previously set OUTPut DELay FALL time by sending OUTPut DELay FALL You can also query the minimum or maximum allowable fall time as follows OUTPut DELay FALL MIN OUTPut DELay F...

Page 171: ...egister in one message by using a root specifier as follows OUTPut PROTection CLEar STATus OPERation CONDition Note the use of the colon after the semicolon in order to return the command parser to the root Terminators A command string sent to the instrument must terminate with a new line NL character The IEEE 488 EOI End Or Identify message is interpreted as a NL character and can be used to term...

Page 172: ...s to the accepted values The following command requires a numeric parameter for the voltage value SOURce VOLTage 50V MIN MAX Note that special values for numeric parameters such as MINimum MAXimum and INFinity are also accepted Instead of selecting a specific value for the voltage parameter you can substitute MIN to set the voltage to its minimum allowable value MAX to set it to its maximum allowa...

Page 173: ...rs the error queue and all configuration states are left unchanged when a Device Clear message is received Device Clear performs the following actions l If a measurement is in progress it is aborted l The instrument returns to the trigger idle state l The instrument s input and output buffers are cleared l The instrument is prepared to accept a new command string The ABORt command is the recommend...

Page 174: ...9 ms 1 NPLC measurement Return 1 NPLC measurement MEAS VOLT 21 03 ms 20 96 ms Return 1 NPLC fetch FETC VOLT 0 63 ms 1 41 ms 25 k pointmeasurement Return 25 k pointmeasurement MEAS VOLT 521 0 ms 521 1 ms Return 25 k pointfetch FETC VOLT 5 07 ms 7 01 ms Return 25 k pointASCII array fetch FETC ARR VOLT 4009 5 ms 1010 8 ms Return 25 k pointbinary array fetch FETC ARR VOLT 694 25 ms 30 39 5 SCPI Progra...

Page 175: ... FETCh FORMat HCOPy IEEE 488 Common INITiate INSTrument LXI MEASure OUTPut SENSe SOURce ARB CURRent DIGital FUNCtion LIST POWer STEP VOLTage STATus SYSTem TRIGger Keysight RP7900 Series Operating and Service Guide 175 5 SCPI Programming Reference ...

Page 176: ...rnal data logging It also resets the WTG meas and MEAS active bits in the Operation Status registers ABORt TRAN Cancels any triggered actions It also resets the WTG tran and TRAN active bits in the Operation Status registers Note that this command does not turn off continuous triggers if INITiate CONTinuous TRANsient ON has been programmed In this case the trigger system will automatically re init...

Page 177: ...hare settings so setting the current Arb resets the voltage Arb level to its default value and vice versa For better performance the list can be sent as single precision floating point values in definite length arbitrary block format instead of an ASCII list The response format is dependent on the return format ASCII or REAL Parameter Typical Return 102 to 102 of currentrating or 0 to 102 of volta...

Page 178: ... a voltage or current Arb Only one type of Arb may be output at a time The selection must match the priority mode Parameter Typical Return CURRent VOLTage RSTVOLTage VOLTor CURR Specifies a voltageArb ARB FUNC TYPE VOLT SOURce ARB TERMinate LAST 0 OFF 1 ON SOURce ARB TERMinate LAST Selects the output setting after the Arb ends When ON 1 the output voltage or current remains at the last Arb value T...

Page 179: ...tion count CAL COUN CALibrate CURRent LEVel value Calibrates the current programming and measurement The value selects the range to calibrate Parameter Typical Return Themaximum currentof theoutputrange none Calibrates thecurrentof the10 A range CAL CURR 10 CALibrate CURRent SHARing Calibrates the Imon signal for paralleled units Parameter Typical Return none none Calibrates thecurrentsharing CAL ...

Page 180: ... single or doublequotes lastcal date Enters thecalibration date CAL DATE 12 12 12 CALibrate LEVel P1 P2 P3 CALibrate LEVel Advances to the next level in the calibration P1 is the first level P2 is the second P3 is the third Parameter Typical Return P1 P2 P3 none Selects the first calibration point CAL LEV P1 l Some calibration sequences may require some settling time after sending CAL LEV but befo...

Page 181: ...stants in non volatile memory Do this at the end of the calibration to avoid losing changes Parameter Typical Return none none Store calibration constants into non volatile memory CAL SAVE CALibrate STATe 0 OFF 1 ON password CALibrate STATe Enables or disables calibration mode Calibration mode must be enabled for the instrument to accept any calibration commands The first parameter specifies the s...

Page 182: ...gramming and measurement The value selects the range to calibrate Parameter Typical Return Themaximum voltageof theoutputrange none Calibrates thevoltageof the20 V range CAL VOLT20 5 SCPI Programming Reference 182 Keysight RP7900 Series Operating and Service Guide ...

Page 183: ...rner frequency applied to the programming setpoint signal with the indicated range of user configurable setpoints The value is in Hertz The default frequency is optimized for maximum up programming speed as well as the fastest transient response time It can be reduced to compensate for output overshoots Parameter Typical Return 0 1 0 or 1 10 to 5 000 all ranges polefrequency Sets the current bandw...

Page 184: ...at happens to the output current when the transient system is initiated and triggered FIXed keeps the output current at its immediate value STEP steps the output to the triggered level when a trigger occurs LIST causes the output to follow the list values when a trigger occurs ARB causes the output to follow the arbitrary waveform values when a trigger occurs Parameter Typical Return FIXed STEP LI...

Page 185: ...URce CURRent PROTection STATe Enables or disables the over current protection If the over current protection function is enabled and the output goes into current limit the output is disabled and the Questionable Condition status register OCP bit is set Parameter Typical Return 0 OFF 1 ON RSTOFF 0 or 1 Enable the current protection state CURR PROT STAT ON l An over current condition can be cleared ...

Page 186: ...eturned The resolution of the slew setting is the same as the minimum value which can be queried using CURRent SLEW MIN The exact value varies slightly according to cal ibration SOURce CURRent SLEW MAXimum 0 OFF 1 ON SOURce CURRent SLEW MAXimum Enables or disables the maximum slew rate override When enabled the slew rate is set to its maximum value When disabled the slew rate is set to the immedia...

Page 187: ...g to the following bit assignments Pin 1 2 3 4 5 6 7 Bitnumber 0 1 2 3 4 5 6 Decimal value 1 2 4 8 16 32 64 Bit values corresponding to digital port pins that are not configured as DIO are ignored Parameter Typical Return 0 127 RST0 bitvalue Programs pins 1 3 and 5 on DIG OUTP DATA SOURce DIGital PIN 1 7 FUNCtion function SOURce DIGital PIN 1 7 FUNCtion Sets the pin function The functions are save...

Page 188: ...NEGative POS or NEG Sets pin 1 to POSitive polarity DIG PIN1 POL POS SOURce DIGital TOUTput BUS ENABle 0 OFF 1 ON SOURce DIGital TOUTput BUS ENABle Enables or disables BUS triggers on digital port pins This allows a BUS trigger to be sent to any digital port pin that has been configured as a trigger output A trigger out pulse is generated when the state is on and a bus trigger is received A BUS tr...

Page 189: ... panel METER_VI displays output voltage and current METER_VP displays output voltage and power METER_VIP displays output voltage current and power Parameter Typical Return METER_VI METER_VP METER_VIP RSTMETER_VI METER_VI METER_VP or METER_VIP To display voltageand power DISP VIEWMETER_VP DISPlay SAVer STATe 0 OFF 1 ON DISPlay SAVer STATe Turns the front panel screen saver on or off Parameter Typic...

Page 190: ...ting at startindex and of length points Parameter Typical Return startindex thestartindex points thenumber of points DC value Returns the measured DC current FETC CURR FETCh SCALar CURRent ACDC FETCh SCALar VOLTage ACDC Returns the RMS measurement AC DC Values returned are either in amperes or volts Parameter Typical Return none ACDC value Returns the measured RMS voltage FETC VOLT ACDC FETCh SCAL...

Page 191: ...ent FETC CURR MAX Returns the measured minimum voltage FETC VOLT MIN Returns the measured maximum power FETC POW MAX FETCh AHOur IGNORE_OVLD FETCh WHOur IGNORE_OVLD FETCh AHOur Returns the accumulated amp hours FETCh WHOur Returns the accumulated watt hours See Amp Hour and Watt Hour Measurements for details If any measurement sample was overrange the query returns SCPI Not a Number 9 91E37 If the...

Page 192: ...rrent array FETC ARR CURR FETCh ELOG maxrecords Returns the most recent external datalog records Data must be read from the buffer periodically to avoid the buffer overflowing Whenever data is read using FETCh ELOG then that buffer space is made available in the instrument for storing more acquired data Maxrecords is the maximum number of records of datalog data that the controller will return The...

Page 193: ...edata formatto ASCII FORMatASCII l The data format is used by a small sub set of queries that can return large quantities of data FORMat BORDer NORMal SWAPped FORMat BORDer Specifies how binary data is transferred This only applies when the FORMat DATA is set to REAL NORMal transfers data in normal order The most significant byte is returned first and the least significant byte is returned last bi...

Page 194: ... at its programmed setting In current priority mode the output is controlled by a constant current feedback loop which maintains the output current at its positive or negative programmed setting Refer to Priority Mode Tutorial for more information Parameter Typical Return CURRent VOLTage RSTVOLTage CURR or VOLT Sets theoutputregulation to currentpriority FUNC CURR 5 SCPI Programming Reference 194 ...

Page 195: ...e nonzero digit specifies the number of digits to follow digits specify the number of 8 bit data bytes to follow and 8 bit data bytes contain the data to be transferred Parameter Typical Return BMP GIF PNG Block Returns the image in GIF format HCOP SDUM DATA GIF HCOPy SDUMp DATA FORMat BMP GIF PNG HCOPy SDUMp DATA FORMat Specifies the format for front panel images returned Parameter Typical Return...

Page 196: ...abled events are logically ORed into the ESB bit of the status byte The query reads the enable register Refer to Status Tutorial for more information Parameter Typical Return A decimal valuecorresponding to thebinary weighted sum of theregister s bits bitvalue Enablebits 3 and 4 in theenableregister ESE 24 l The value returned is the binary weighted sum of all enabled bits in the register For exam...

Page 197: ...strument s identification string IDN OPC Sets the OPC operation complete bit in the standard event register This occurs at the completion of the pending operation Refer to Status Tutorial for more information Parameter Typical Return none none SettheOperation Completebit OPC l The purpose of this command is to synchronize your application with the instrument l Used in conjunction with initiated ac...

Page 198: ...ems are set to the Idle state 3 calibration is disabled 4 all lists are set to their RST values and 5 the non volatile settings are not affected Parameter Typical Return 0 9 none Recall statefrom location 1 RCL1 l Location 0 is automatically recalled at power turn on when the Output Power On state is set to RCL 0 l Stored instrument states are not affected by RST RST Resets the instrument to pre d...

Page 199: ...tatus Summary MSS bit and the Request for Service RQS summary bit A 1 in any Service Request Enable register bit position enables the corresponding Status Byte register bit All such enabled bits are then logically OR ed to cause the MSS bit of the Status Byte register to be set Refer to Status Tutorial for more information Parameter Typical Return A decimal valuecorresponding to thebinary weighted...

Page 200: ...Ror to read error queue See SCPI Error Messages for more information Parameter Typical Return none 0 pass or 1 failed Perform self test TST l The power on self test is the same self test performed by TST l TST also forces an RST command WAI Pauses additional command processing until all pending operations are complete See OPC for more information Parameter Typical Return none none Wait until all p...

Page 201: ...gger occurs before the trigger system is ready for it the trigger will be ignored Check the WTG_meas bit in the operation status register to know when the instrument is ready l Use ABORt commands to return the instrument to Idle INITiate CONTinuous TRANsient 0 OFF 1 ON INITiate CONTinuous TRANsient Continuously initiates the transient trigger system This allows multiple triggers to generate multip...

Page 202: ...he master INST GRO FUNC MAST INSTrument GROup MASTer CONNect STATe 0 OFF 1 ON Instructs the master unit to connect to the previously discovered slave units If the slave configuration on the bus matches the discovered one the master will start normal operation Otherwise the command will fail with an error and all units will operate independently Parameter Typical Return optional 0 OFF 1 ON 0 or 1 C...

Page 203: ...the master unit to discover all slave units connected to the master slave bus Parameter Typical Return none none Discover all slave units INST GRO MAST DISC INSTrument GROup MASTer RESet Resets the master discovered slave configuration It disconnects any slave connected units and returns them to independent operation Parameter Typical Return none none Resets all slave units INST GRO MAST RES INSTr...

Page 204: ... VOLTage LEVel value value SOURce LIST VOLTage LEVel Specifies the setting for each list step Values are specified in either amperes or volts Parameter Typical Return Voltage 0 to 102 of rating Current 102 to 102 of rating listvalue1 listvalue2 listvalue3 Programs a currentlist Thelistcontains 3 steps LIST CURR 3 2 1 Programs a voltagelist Thelistcontains 3 steps LIST VOLT20 10 5 SOURce LIST DWELl...

Page 205: ...uses the output to automatically advance to each step after the receipt of an initial starting trigger Steps are paced by the dwell list As each dwell time elapses the next step is immediately output Parameter Typical Return ONCE AUTO RSTAUTO ONCE or AUTO Specifies the list steps to be paced by trigger signals LIST STEP ONCE SOURce LIST TERMinate LAST 0 OFF 1 ON SOURce LIST TERMinate LAST Determin...

Page 206: ... or end of step EOSTep A trigger is only generated when the state is set to ON The trigger signal can be used as a trigger source for measurements and transients of other units and for digital port pins configured as trigger outputs Parameter Typical Return 0 OFF 1 ON 0 or 1 To generate triggers at the beginning of the second step of a 3 step list LIST TOUT BOST OFF ON OFF 5 SCPI Programming Refer...

Page 207: ... to identify the instrument that is being addressed Parameter Typical Return 0 OFF 1 ON RSTOFF 0 or 1 To blink the front panel LXI indicator LXI IDENT ON LXI MDNS STATe 0 OFF 1 ON LXI MDNS STATe Sets the MDNS state on or off Parameter Typical Return 0 OFF 1 ON RSTOFF 0 or 1 To set the MDNS state on LXI MDNS ON Keysight RP7900 Series Operating and Service Guide 207 5 SCPI Programming Reference ...

Page 208: ...AS CURR MEASure SCALar CURRent ACDC MEASure SCALar VOLTage ACDC Initiates triggers and returns the total RMS measurement AC DC Values returned are either in amperes or volts Parameter Typical Return none ACDC value Returns the measured RMS voltage MEAS VOLT ACDC MEASure SCALar CURRent HIGH MEASure SCALar VOLTage HIGH Initiates triggers and returns the High level of a pulse waveform Values returned...

Page 209: ...Returns the measured maximum power MEAS POW MAX MEASure ARRay CURRent DC MEASure ARRay VOLTage DC MEASure ARRay POWer DC Initiates and triggers a measurement returns a list of the digitized output measurement samples Values returned are either in amperes volts or watts The return format depends on the settings of the FORMat BORDer and FORMat DATA commands When the data format is set to ASCII retur...

Page 210: ...eysight SD1000A SDS is connected the start up will take longer see Turn On Turn Off Delays OUTPut STATe COUPle STATe 0 OFF 1 ON OUTPut STATe COUPle STATe Enables or disables output coupling Output coupling allows the outputs of multiple instruments to turn on and off sequentially according to their specified OUTPut DELay RISE and OUTput DELay FALL programming delays This parameter is saved in non ...

Page 211: ...Put STATe DELay FALL MIN MAX OUTPut STATe DELay RISE value MIN MAX OUTPut STATe DELay RISE MIN MAX Specifies the delay in seconds that the instrument waits before turning the output on rise or off fall This allows multiple instruments to turn on or off in sequence The output will not turn on or off until its delay time has elapsed This command affects on to off state transitions It does NOT affect...

Page 212: ...ng will be changed to agree with the turn on setting Parameter Typical Return 0 OFF 1 ON 0 or 1 Couples theTurn on turn off modes OUTP REL LOCK ON OUTPut STATe TMODe OFF HIGHZ LOWZ OUTPut TMODe OFF OUTPut STATe TMODe ON HIGHZ LOWZ OUTPut TMODe ON These commands set the output turn on and turn off behavior to Low impedance or High impedance Low Impedance programs the output voltage to zero then dis...

Page 213: ... LIVE OFF LATC LIVE or OFF Sets theInhibitInputto Livemode OUTP INH MODE LIVE OUTPut PON STATe RST RCL0 OUTPut PON STATe Sets the output power on state This determines whether the power on state is set to the RST state RST or the state stored in memory location 0 RCL0 Instrument states can be stored using the SAV command This parameter is saved in non volatile memory Parameter Typical Return RST R...

Page 214: ...chdog timer When enabled the output will be disabled if there is no I O activity on any remote interface within the time period specified by the OUTPut PROTection WDOG DELay command The output is latched off but the programmed output state is not changed Parameter Typical Return 0 OFF 1 ON RSTOFF 0 or 1 Enables thewatchdog timer protection OUTP PROT WDOG ON OUTPut PROTection WDOG DELay value MIN M...

Page 215: ...t change along with the output state of the power supply This improves the output response time for applications that do not require a physical output disconnect during normal output on off operation This parameter is saved in non volatile memory Parameter Typical Return 0 OFF 1 ON 0 or 1 Locks theSDS relays closed OUTP REL LOCK ON Keysight RP7900 Series Operating and Service Guide 215 5 SCPI Prog...

Page 216: ...turns the power limit of the instrument in Watts either 5 kW or 10 kW Parameter Typical Return None 5 000 or 10 000 Return the power limit POWer LIMit 5 SCPI Programming Reference 216 Keysight RP7900 Series Operating and Service Guide ...

Page 217: ...Elog current or voltage measurement function Parameter Typical Return 0 OFF 1 ON RSTOFF 0 or 1 Enables datalog currentmeasurements SENS ELOG FUNC CURR ON SENSe ELOG FUNCtion CURRent MINMax 0 OFF 1 ON SENSe ELOG FUNCtion CURRent MINMax SENSe ELOG FUNCtion VOLTage MINMax 0 OFF 1 ON SENSe ELOG FUNCtion VOLTage MINMax Enables or disables logging of the minimum and maximum current or voltage values Par...

Page 218: ...power line cycles Increasing the number of power line cycles reduces the measurement noise on current and voltage measurements Changing the NPLC changes the number of points and time interval setting The number of points in 1 NPLC depends on the line frequency setting see SYSTem LFR MODE Parameter Typical Return 0 0003072 to 1 258 290 000 000 RST1 NPLC value Specifies 100 power linecycles SENS SWE...

Page 219: ...es an interval of 1 ms between points SENS SWE TINT0 001 SENSe WINDow TYPE HANNing RECTangular SENSe WINDow TYPE Selects the measurement window This sets a signal conditioning function used in scalar DC measurement calculations Neither window function alters the instantaneous voltage or current data returned in the measurement array Hanning window is a raised cosine function It is a signal conditi...

Page 220: ...SOURce subsystem commands are often used without the optional SOURce keyword these commands are listed by their individual subsystems below Subsystems and Commands Using the Optional SOURce Keyword ARB CURRent DIGital FUNCtion LIST POWer LIMit STEP TOUTput VOLTage 5 SCPI Programming Reference 220 Keysight RP7900 Series Operating and Service Guide ...

Page 221: ...he operation status event register STAT OPER l The value returned is the binary weighted sum of all enabled bits in the register For example with bit 3 value 8 and bit 5 value 32 set and enabled the query returns 40 l RST has no effect on this register STATus OPERation CONDition Queries the condition register for the Operation Status group This is a read only register which holds the live unlatche...

Page 222: ...he NTR register is set to 1 then a 1 to 0 transition of the corresponding bit in the Operation Condition register causes that bit in the Operation Event register to be set When a bit in the PTR register is set to 1 then a 0 to 1 transition of the corresponding bit in the Operation Condition register causes that bit in the Operation Event register to be set STATus PRESet sets all bits in the PTR re...

Page 223: ...ighted sum of all enabled bits in the register For example with bit 2 value 4 and bit 4 value 16 set the query returns 20 l RST has no effect on this register STATus QUEStionable 1 2 CONDition Queries the condition register for the Questionable Status group This is a read only register which holds the live unlatched operational status of the instrument Reading the Questionable Status Condition reg...

Page 224: ...e NTR register is set to 1 then a 1 to 0 transition of the corresponding bit in the Questionable Condition register causes that bit in the Questionable Event register to be set When a bit in the 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 STATus PRESet sets all bits in...

Page 225: ... trigger out is generated when a transient step occurs A trigger is generated when the state is on true Parameter Typical Return 0 OFF 1 ON RSTOFF 0 or 1 Sets the step trigger signal to ON STEP TOUT ON Keysight RP7900 Series Operating and Service Guide 225 5 SCPI Programming Reference ...

Page 226: ...MMunicate RLSTate Configures the remote local state of the instrument Remote and local do the same thing and are included for compatibility with other products LOCal sets instrument to front panel control REMote sets the instrument to front panel control RWLock disables the front panel keys The instrument can only be controlled via the remote interface This programmable setting is completely indep...

Page 227: ...rs have occurred the last error stored in the queue the most recent error is replaced with 350 Error queue overflow No additional errors are stored until you remove errors from the queue If no errors have occurred when you read the error queue the instrument responds with 0 No error l The error queue is cleared by the CLS and when power is cycled It is not cleared by a RST l Errors have the follow...

Page 228: ...R MODE MAN60 SYSTem PASSword FPANel RESet Resets the front panel lockout password to zero This command does not reset the calibration password Parameter Typical Return none 0 No error Resets thefrontpanel password SYST PASS FPAN RES SYSTem REBoot Reboots the instrument to its power on state Parameter Typical Return none none Reboots theinstrument SYST REB SYSTem SDS CONNect Connects the power supp...

Page 229: ... Thecover is open thepower supply is inhibited 3 Therelay control modeis setto external Parameter Typical Return none integer Return the state of the SDS inputs SYST SDS DIG DATA INP SYSTem SDS DIGital DATA OUTPut 0 1 SYSTem SDS DIGital DATA OUTPut Send an integer whose bits set the state of the SDS external output signals either on or off At present there is only one digital output signal availab...

Page 230: ...re the instrument for removal from a secure area It sanitizes all user data It writes all zeros to flash memory and then performs a chip erase as per manufacturer s data sheet Identification data instrument firmware model number serial number MAC address and calibration data is not erased After the data is cleared the instrument is rebooted This procedure is not recommended for use in routine appl...

Page 231: ...l and Analysis software Parameter Typical Return hh mm ss hh mm ss Settheclock to 8 30 PM SYST TIME2018 06 30 SYSTem VERSion Returns the SCPI version that the instrument complies with Cannot be determined from front panel Parameter Typical Return none version Return theSCPI version SYST VERS l The command returns a string in the form YYYY V where YYYY represents the year of the version and V repre...

Page 232: ...X Sets the triggered level of the output Applies when the measurement trigger source is set to a level Values are specified in either amperes or volts The minimum and maximum values depend on the ratings of the unit Parameter Typical Return Voltage 0 to 102 of rating RST0 Current 102 to 102 of rating level value Setthetriggered currentlevel to 3 A TRIG ACQ CURR 3 Setthetriggered voltagelevel to 50...

Page 233: ...Tput ENABle 0 OFF 1 ON TRIGger ACQuire TOUTput ENABle Enables measurement triggers to be sent to a digital port pin The digital port pin must be configured as trigger output before it can be used as a trigger source see External Trigger I O Parameter Typical Return 0 OFF 1 ON RSTOFF 0 or 1 Enablesending measurementtriggers to digital pins TRIG ACQ TOUTON TRIGger ACQuire SOURce source TRIGger ACQui...

Page 234: ...xternal data logging TRIG TRANsient SOURce Selects the trigger source for the transient system BUS Selects a remote interface trigger command EXTernal Selects ALL digital port pins that have been configured as trigger sources IMMediate Triggers the transient as soon as it is INITiated PIN 1 7 Selects a digital port pin configured as a trigger input Parameter Typical Return BUS EXTernal IMMediate P...

Page 235: ... the voltage compensation This lets you optimize output response time with capacitive loads These compensation modes only apply when the unit is operating in voltage priority mode LOW 0 is optimized for stability with a wide range of output capacitors HIGH1 1 provides maximum up programming speed as well as the fastest transient response time when the output capacitance is restricted to small valu...

Page 236: ... a wide range of output capacitors 2 Slow speed Large capacitive load best suited for DUTs with high capacitance low ESR with the trade off of a slower programming speed and transient response Parameter Typical Return 0 1 2 RST0 0 1 or 2 Sets the voltage bandwidth to comp 1 VOLT BWID RANG 1 SOURce VOLTage LIMit POSitive IMMediate AMPLitude value MIN MAX SOURce VOLTage LIMit POSitive IMMediate AMPL...

Page 237: ... trigger occurs Parameter Typical Return FIXed STEP LIST ARB RSTFIXed FIX STEP LIST or ARB Sets the voltage mode to Step VOLT MODE STEP SOURce VOLTage PROTection LEVel value MIN MAX SOURce VOLTage PROTection LEVel MIN MAX Sets the over voltage protection level Units are in volts If the output voltage exceeds the OVP level the output is disabled and the Questionable Condition status register OV bit...

Page 238: ...tion LOW STATe Enables or disables low voltage protection Parameter Typical Return 0 OFF 1 ON RSTOFF 0 or 1 Enable the under voltage protection state VOLT PROT LOW STAT ON l A low voltage condition can be cleared with OUTPut PROTection CLEar after the cause of the con dition is removed SOURce VOLTage RESistance LEVel IMMediate AMPLitude value MIN MAX SOURce VOLTage RESistance LEVel IMMediate AMPLi...

Page 239: ...Sets theoutputslewrateto 5 V per second VOLT SLEW5 l The query returns the value that was sent If the value is less than the minimum slew rate the min imum value is returned The resolution of the slew setting is the same as the minimum value which can be queried using VOLTage SLEW MIN The exact value varies slightly according to cal ibration SOURce VOLTage SLEW MAXimum 0 OFF 1 ON SOURce VOLTage SL...

Page 240: ... with positive edge transition pass to the event register When an NTR bit is set signals with a negative edge transition pass to the event register When both bits are set all signal pass When neither bits are set no signals pass l An Event register latches transitions that pass through the PTR and NTR registers When an event bit is set it remains set until the Event register is read Reading the Ev...

Page 241: ...e Questionable1 Status register bit assignments Bit Bit Name Decimal Value Definition 0 OV 1 Outputis disabled by theover voltageprotection 1 OC 2 Outputis disabled by theover currentprotection 2 PF 4 Outputis disabled by power fail low lineor brownouton AC line 3 CP 8 Outputis disabled by thepositiveover power limit 4 OT 16 Outputis disabled by theover temperatureprotection 5 CP 32 Outputis disab...

Page 242: ...y to the enable registers of the Operation and Questionable status groups Refer to Status Diagram The following table describes the Standard Event Status register bit assignments Bit Bit Name Decimal Value Definition 0 Operation Complete 1 All commands beforeand including OPC havebeen executed 1 notused notused 0 is returned 2 Query Error 4 Theinstrumenttried to read theoutputbuffer butitwas empty...

Page 243: ...ce Bits MSS is a real time unlatched summary of all Status Byte register bits that are enabled by the Service Request Enable register MSS is set whenever the instrument has one or more reasons for requesting service STB reads the MSS in bit position 6 of the response but does not clear any of the bits in the Status Byte register The RQS bit is a latched version of the MSS bit Whenever the instrume...

Page 244: ...Status Diagram 5 SCPI Programming Reference 244 Keysight RP7900 Series Operating and Service Guide ...

Page 245: ...ed PIN n EXTernal Selects a digital portpin configured as a trigger input n specifies thepin number EXTernal selects ALLcon nector pins thathavebeen configured as trigger inputs TRAN1 Selects thetransientsystem as thetrigger source TRIG ACQ IMM Triggers theacquisition immediately TRIG TRAN IMM Triggers thetransientimmediately VOLT1 Selects an outputvoltagelevel Trigger Destinations The following t...

Page 246: ...Trigger Diagram 5 SCPI Programming Reference 246 Keysight RP7900 Series Operating and Service Guide ...

Page 247: ...Well DWELl 0 001 ARB FUNCtion SHAPe CDW ARB FUNCtion TYPE VOLTage ARB TERMinate LAST OFF ARB VOLTage CDWell DWELl 0 001 CALibrate STATe OFF CURRent 0 CURRent LIMit 1 02 of rating CURRent LIMit NEGative 10 2 of rating CURRent MODE FIXed CURRent PROTection DELay 20 ms CURRent PROTection DELay STARt SCHange CURRent PROTection STATe OFF CURRent SHARing OFF CURRent SLEW MAX CURRent SLEW MAXimum ON CURR...

Page 248: ...ST TOUTput EOSTep 1 step setto OFF LIST VOLTage 1 step setto 0 1 of rating LXI IDENtify OFF LXI MDNS OFF OUTPut OFF OUTPut DELay FALL 0 OUTPut DELay RISE 0 OUTPut PROTection WDOG OFF OUTPut PROTection WDOG DELay 60 RESistance 0 RESistance STATe 0 SENSe CURRent RANGe AUTO 102 5 of rating SENSe FUNCtion CURRent 1 SENSe FUNCtion VOLTage 1 SENSe SWEep NPLCycles 1 SENSe SWEep OFFSet POINts 0 SENSe SWEe...

Page 249: ...LIMit 1 of rating VOLTage MODE FIXed VOLTage PROTection 120 of rating VOLTage RESistance 0 VOLTage RESistance STATe OFF VOLTage SLEW MAX VOLTage SLEW MAXimum ON VOLTage TRIGgered 0 1 of rating Non Volatile Settings The following table shows the as shipped settings of the non volatile parameters These are not affected by power cycling or RST SCPI as shipped settings CALibrate DATE empty string CALi...

Page 250: ...ckoutpassword Disabled Firmwareupdatepassword protected Disabled GPIB address 5 GPIB interface Enabled LANinterface Enabled USB interface Enabled Screen saver Enabled Screen saver delay 60 minutes Wakeon I O Enabled Interfaceas shipped settings GetGPIB Address Automatic Subnetmask 255 255 0 0 Defaultgateway 0 0 0 0 Hostname K serial number mDNS servicename KeysightRP79xxx RegenerativePower System ...

Page 251: ...I as shipped settings LANservice mDNS Enabled LANservice Web server Enabled LANservice sockets Enabled Web password Blank Keysight RP7900 Series Operating and Service Guide 251 5 SCPI Programming Reference ...

Page 252: ...stored until you remove errors from the queue If no errors have occurred when you read the error queue the instrument responds with 0 No error l The front panel reports errors from all I O sessions and the global error queue To read the error queue from the front panel press the ERROR key l Error conditions are also summarized in the Status Byte Register See Status Subsystem Intro duction for deta...

Page 253: ...onstant is outside the acceptable range 110 Wrong V I The instrument was unable to set the correct voltage or current value 114 Wrong status An incorrect status function has been reported 116 Locked out by internal switch setting This function has been locked out by an internal switch 117 Calibration error A calibration error has occurred Do not save calibration constants Try re calibrating the un...

Page 254: ...screpancy has occurred between the line frequency and the line frequency setting 215 Hardware failure A hardware failure has occurred on the power supply 302 Option not installed The option that is programmed by this command is not installed 303 There is not a valid acquisition to fetch from There is no valid data in the measurement buffer 304 Volt and curr in incompatible transient modes Voltage ...

Page 255: ...e update error This may be due to the instrument hardware not being able to support the firmware version 324 Inconsistent arb settings The arb settings are inconsistent most likely a mismatch in the arb lengths 327 Initiated with no sense function enabled A measurement has been initiated without specifying the measurement sense function 328 Too many measurement points Too many measurement points h...

Page 256: ...were expected 110 Command header error An error was detected in the header 111 Header separator error A character 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 suf...

Page 257: ...d character or the element is not valid 144 Character data too long The character data element contains more than 12 characters 148 Character data not allowed A discrete parameter was received but a string or numeric parameter was expected 150 String data error Generic string data error 151 Invalid string data An invalid character string was received Check that the string is enclosed in quotation ...

Page 258: ...an handle 224 Illegal parameter value An exact value was expected but not received 225 Out of memory The device has insufficient memory to perform the requested operation 226 Lists not same length One or more lists are not the same length 230 Data corrupt or stale Possible invalid data A new reading was started but not completed 231 Data questionable The measurement accuracy is suspect 232 Invalid...

Page 259: ...interrupted query error occurred 420 Query UNTERMINATED A condition causing an unterminated query error occurred 430 Query DEADLOCKED A condition causing a deadlocked query error occurred 440 Query UNTERMINATED after indefinite response A query was received in the same program message after a query indicating an indefinite response was executed Keysight RP7900 Series Operating and Service Guide 25...

Page 260: ...wing table compares the feature set of the Keysight N7900 APS models with the feature set of the RPS models Feature In N7900 APS models Two quadrantoperation Voltageand currentpriority operation Voltageand currentslewrates Resistanceprogramming in voltagepriority mode Outputbandwidth selection in voltagepriority mode Yes Yes Yes Yes Yes Outputtriggering Singlestep outputchange Outputlistof up to 5...

Page 261: ...r temperature Excessiveoutputdynamics High Z LowZ User protection Availableauxiliary safety disconnectsystem Yes Yes Yes Yes Yes Yes No System features Digital portpins RemoteInhibit Faultoutput Fan speed control Coupled outputOn Off Two wirecurrentsharing OutputRelay Black Box recorders Sensefaultdetection Master slavecapability Yes Yes Yes Yes Yes Yes Yes Yes No Keysight RP7900 Series Operating ...

Page 262: ......

Page 263: ...Keysight RP7900 Series Operating and Service Guide 6 Verification and Calibration Test Equipment and Setups Performance Verification Instrument Calibration Test Record Forms ...

Page 264: ...36A or RP7946A3 KeysightRP7952A or RP7962A3 KeysightRP7953A or RP7963A3 V DC power supply4 80 V 40 A KeysightRP7935A RP7945A3 or equivalent C GPIB controller Full GPIB capabilities Keysight82350B or equivalent V C Oscilloscope Sensitivity 1 mV Bandwidth 20 MHz Probe 10 1 with RFtip Probe 100 1 with RFtip KeysightDSO6054A or equivalent Keysight10073D Keysight10076C V RMS Voltmeter TrueRMS Bandwidth...

Page 265: ...rminals Connect the voltmeter directly to these current monitoring terminals Electronic Load Many of the test procedures require the use of a variable load capable of dissipating the required power For all tests a Keysight RP79xxA unit can be used as a load provided that its voltage rating is equivalent to the unit under test The RP79xxA load unit is considerably easier to use than load resistors ...

Page 266: ...ifications You can perform two different levels of performance verification tests l Performance Verification Tests An extensive set of tests that are recommended as an acceptance test when you first receive the instrument or after performing adjustments l Calibration Tests These tests verify that the instrument is operating within its calibration limits The performance verification tests are recom...

Page 267: ...odels rated at 950 VDC Ensure that all instrument connections load wiring and load connections are either insulated or covered using the safety covers provided so that no accidental contact with lethal voltages can occur Always turn off the output when connecting or disconnecting any equipment on the sense or output terminals of the unit Equipment Damage It is recommended to set the overvoltage pr...

Page 268: ...th the following l Ambient temperature is stable between 18 and 28 C l Ambient relative humidity is less than 80 l 30 minute warm up period before verification or adjustment l Cables as short as possible twisted or shielded to reduce noise 6 Verification and Calibration 268 Keysight RP7900 Series Operating and Service Guide ...

Page 269: ...erface The readings should be within the limits specified in the test record form for the appropriate model under Voltage Programming Readback High Voltage Constant Voltage Load Effect This test measures the change in voltage resulting from a change in current from full load to no load Step 1 Turn off the unit under test Connect the DMM to the sense screws and connect the RP79xxA load unit Make su...

Page 270: ...t settings as described in the in the test record form under CV Ripple and Noise Turn the output on Program the RP79xxA load as shown in the test record card and turn the output on Let the oscilloscope run for a few seconds to generate enough measurement points On the Keysight Infiniium scope the maximum peak to peak voltage measurement is indicated at the bottom of the screen on the right side Th...

Page 271: ...urrent shunt directly across the output terminals Connect the DMM directly across the current shunt see Test Setup B Note that the RP79xxA load is not used in this portion of the test Step 2 Turn on the unit under test and program the instrument settings as described in the test record form under Current Programming Readback Min Current The output status should be CC with the output voltage close ...

Page 272: ...t adjust the load so that the output voltage drops slightly Step 7 Short the electronic load Divide the voltage drop DMM reading across the current shunt by the shunt resistance to convert to amps and record this value The difference in the current readings in steps 4 and 5 is the load effect which should not exceed the value listed in the test record for the appropriate model under CC Load Effect...

Page 273: ...s in non volatile memory until the next calibration adjustment is performed This EEPROM calibration memory is not changed by cycling power or RST Refer to the Recommended Test Equipment and Setups section for a list of the equipment and test setups required for calibration Also refer to the Measurement Setups section for information about connecting the voltmeter current shunt and load Additional ...

Page 274: ...rument should be calibrated on a regular interval determined by the accuracy requirements of your application A one year interval is adequate for most applications Accuracy specifications are warranted only if adjustment is made at regular calibration intervals Published accuracy specifications are not warranted beyond the one year calibration interval Three Year Calibration Interval Voltage and c...

Page 275: ...see Cal Setup A Step 2 Select the voltage programing and measurement calibration FrontPanel Menu Reference SCPI Command Select System Admin Cal Vprog Check that the voltmeter is connected and select Next Specify the full scale voltage range Full scale ranges vary by model This selects the 500 V range CAL VOLT 500 Step 3 Select the first voltage calibration point Measure the output voltage with the...

Page 276: ...nt current I V R and enter the data FrontPanel Menu Reference SCPI Command Display shows Enter P1 measured data This should be about50 of thefull scalecurrentrating Press Enter when done CAL LEV P1 OPC CAL DATA data Step 4 Select the second current calibration point Wait 5 minutes for the temperature to settle Calculate the shunt current I V R and enter the data FrontPanel Menu Reference SCPI Comm...

Page 277: ...r FrontPanel Menu Reference SCPI Command Check thattheshuntis connected and selectNext Not applicable Step 5 Select the second current calibration point Wait 5 minutes for the temperature to settle Calculate the shunt current I V R and enter the data FrontPanel Menu Reference SCPI Command Display shows Enter P2 measured data Enter the data from the external DMM This should be about 70 of the full ...

Page 278: ... limit 0 95 rated output current of the unit under test The current limit must be within 2 of this value Step 3 Select the resistance bottom out calibration Calibration takes approximately 5 seconds FrontPanel Menu Reference SCPI Command Select System Admin Cal Misc ResBout Check that the power supply is connected and select Next CAL RES BOUT OPC Step 4 After the calibration completes disconnect t...

Page 279: ..._ _______ _______ _______ 0 012 Iout 0 012 20 032 Iout 0 032 CC Load Effect Both 0 009 _______ 0 009 Current Sink Tests 100 of current rating Both 20 032 _______ 19 968 RP7951A RP7961A UUTSettings RP7952A RP7962A Load Settings Voltage Programming Readback Min Voltage Programming Readback High CVLoad Effect CVRipple and Noise Transient Response Current Programming Readback Min Current Programming R...

Page 280: ..._____ _______ _______ 0 024 Iout 0 024 40 064 Iout 0 064 CC Load Effect Both 0 017 _______ 0 017 Current Sink Tests 100 of current rating Both 40 064 _______ 39 936 RP7952A RP7962A UUTSettings RP7952A RP7962A Load Settings Voltage Programming Readback Min Voltage Programming Readback High CVLoad Effect CVRipple and Noise Transient Response Current Programming Readback Min Current Programming Readb...

Page 281: ... _______ _______ 0 012 Iout 0 012 20 032 Iout 0 032 CC Load Effect Both 0 009 _______ 0 009 Current Sink Tests 100 of current rating Both 20 032 _______ 19 968 RP7953A RP7963A UUTSettings RP7953A RP7963A Load Settings Voltage Programming Readback Min Voltage Programming Readback High CVLoad Effect CVRipple and Noise Transient Response Current Programming Readback Min Current Programming Readback H...

Page 282: ..._ _______ _______ 0 045 Iout 0 045 400 205 Iout 0 205 CC Load Effect Both 0 025 _______ 0 025 Current Sink Tests 100 of current rating Both 399 795 _______ 400 205 RP7931A RP7941A UUTSettings RP7933A RP7943A Load Settings Voltage Programming Readback Min Voltage Programming Readback High CVLoad Effect CVRipple and Noise Transient Response Current Programming Readback Min Current Programming Readba...

Page 283: ... _______ 0 013 Iout 0 013 125 0505 Iout 0 0505 CC Load Effect Both 0 013 _______ 0 013 Current Sink Tests 100 of current rating Both 124 9495 _______ 125 0505 RP7932A RP7942A UUTSettings RP7935A RP7945A Load Settings Voltage Programming Readback Min Voltage Programming Readback High CVLoad Effect CVRipple and Noise Transient Response Current Programming Readback Min Current Programming Readback Hi...

Page 284: ..._ _______ _______ 0 090 Iout 0 090 800 41 Iout 0 41 CC Load Effect Both 0 050 _______ 0 050 Current Sink Tests 100 of current rating Both 799 59 _______ 800 41 RP7933A RP7943A UUTSettings RP7933A RP7943A Load Settings Voltage Programming Readback Min Voltage Programming Readback High CVLoad Effect CVRipple and Noise Transient Response Current Programming Readback Min Current Programming Readback H...

Page 285: ... _______ _______ 0 025 Iout 0 025 250 1 Iout 0 1 CC Load Effect Both 0 025 _______ 0 025 Current Sink Tests 100 of current rating Both 249 9 _______ 250 1 RP7935A RP7945A UUTSettings RP7935A RP7945A Load Settings Voltage Programming Readback Min Voltage Programming Readback High CVLoad Effect CVRipple and Noise Transient Response Current Programming Readback Min Current Programming Readback High C...

Page 286: ..._ _______ 0 013 Iout 0 013 125 0505 Iout 0 0505 CC Load Effect Both 0 013 _______ 0 013 Current Sink Tests 100 of current rating Both 124 9495 _______ 125 0505 RP7936A RP7946A UUTSettings RP7936A RP7946A Load Settings Voltage Programming Readback Min Voltage Programming Readback High CVLoad Effect CVRipple and Noise Transient Response Current Programming Readback Min Current Programming Readback H...

Page 287: ...Keysight RP7900 Series Operating and Service Guide 7 Service and Maintenance Introduction Self Test Procedure Firmware Update Instrument Sanitize Calibration Switches Battery Replacemsnt Disassembly ...

Page 288: ... Before returning the unit make sure the failure is in the instrument rather than any external connections Also make sure that the instrument was accurately calibrated within the last year see Calibration Interval If the unit is inoperative verify that l the AC power cord is securely connected to the instrument l the AC power cord is plugged into a live outlet l the front panel Power On Standby sw...

Page 289: ...it for models RP795xA RP796xA P N 5188 9614 Packaging kit for models RP793xA RP794xA Keysight suggests that you always insure shipments Cleaning SHOCK HAZARD To prevent electric shock disconnect the AC mains before cleaning Clean the outside of the instrument with a soft lint free slightly damp cloth Do not use detergent Disassembly is not required or recommended for cleaning Keysight RP7900 Serie...

Page 290: ...leaves the instrument in the reset state User Initiated Self Test The user initiated self test is the same as the power on self test FrontPanel Menu Reference SCPI Command Cycle ac power If self test fails the front panel ERR indicator comes on Press the Error key to display the list of errors TST If 0 self test passed If 1 self test failed If self test fails use SYSTem ERRor to view the self test...

Page 291: ...al Firmware Update Utility 2 Browse to the location of the firmware that you just downloaded Press Next 3 Select the interface that you are using to communicate with your instrument and enter the address or connections string Press Next 4 Verify that the information is correct for the instrument you are updating Press Begin Update The update utility will now update the firmware and restart your in...

Page 292: ...tize Selecting Sanitize removes all user data from the instrument and cycles power SYST SEC IMM Refer to http rfmw em keysight com aerospace index aspx for detailed information Turn on after Sanitization The first time the unit is turned on after it has been sanitized several NVRAM checksum errors will be generated These errors annunciate the fact that two files were missing which have been recrea...

Page 293: ...use a small screwdriver to move the switches As shipped all switches are set toward the ON position see below 3 Replace the top cover when finished Do not use a pencil to move the switches Any graphite dust that gets on the switches will conduct electricity Switch Functions Switches 1 and 2 set the calibration configuration as follows Switches 3 and 4 are not used Switch 1 Switch 2 Description Nor...

Page 294: ...ill not be available for the software No other instrument functions are affected Under normal use at room temperature the lithium battery has a life expectancy between seven and ten years Note that battery life will be reduced if the instrument is stored for a prolonged period at temperatures above 40 degrees C The part number of the battery is Panasonic CR 2032 Replacement Procedure 1 Remove the ...

Page 295: ...he opposite end of the battery indicated by the red arrow The top of the small spring clips should be visible after the battery is seated see red circle 7 Replace the ribbon cables by fully inserting the cables into the connector then pushing down on the locking tab to secure the cables 8 Replace the Control board and top cover when finished 9 Reset the date and time see Clock Setup Keysight RP790...

Page 296: ...ree work area l Use a conductive work area to reduce static charges l Use a conductive wrist strap to reduce static charge accumulation l Minimize handling l Keep replacement parts in original static free packaging l Remove all plastic foam vinyl paper and other static generating materials from the immediate work area Tools Required l T10 Torx driver for cover and board disassembly l T8 Torx drive...

Page 297: ...1 As indicate below first remove the two screws along the top of the Control board Place the screws in a container so that you do not lose them RP793xA RP794xA RP795xA RP796xA 2 You can now lift the board out of its socket and move it to the side When reassembling the Control board don t forget to replace the insulator behind the board Keysight RP7900 Series Operating and Service Guide 297 7 Servi...

Page 298: ...e Constellation board Place the screws in a container so that you do not lose them Remove screws 2 You can now lift the Constellation assembly out of the unit to access the P600 board and battery 3 To access the P600 board use a T8 Torx driver to remove the four heatsink screws You can now remove the P600 board from its socket Remove 4 heatsink screws to remove the P600 board 7 Service and Mainten...

Page 299: ...Keysight RP7900 Series Operating and Service Guide Appendix A Keysight SD1000A Safety Disconnect System Description Installation Operation ...

Page 300: ...fety when the RP7900 power supply is used in a production environment The SDS provides the interface between safety inputs such as an emergency stop switch or fixture cover switch and UUT so that the operator is never exposed to harmful voltages when operating the test system The SDS contains redundant series connected relays two power and two sense relays which provide an additional level of safe...

Page 301: ...ocal or remote sensing 8 RPS input terminals and input connections from the RP7900 unit 9 RPS sense terminals 1 and connections for local or remote sensing 10 DI DO connector Female connector for digital IO control 11 Fixture Cover connector Male connector for fixture cover refer to Cover switch 12 Remote Interface connector Male connector for status and control interface refer to ESTOP switch 13 ...

Page 302: ...nada Complies with European Low Voltage Directive and carries the CE marking Conforms to US and Canadian safety regulations Declarations of Conformity for this product may be downloaded from the Web Go to http regulations corporate keysight com and click on Declarations of Conformity Environmental Operating environment Temperature range 1 Relative humidity Altitude Storage temperature Indoor use i...

Page 303: ...and does not require a fan or other cooling considerations provided that the venting holes on the sides of the unit are not blocked Keysight RP7900 Series Operating and Service Guide 303 Appendix A Keysight SD1000A Safety Disconnect System ...

Page 304: ...ilt into the SDS unit If you are using a master slave power supply configuration the master power supply must be connected to the SDS unit Simplified SDS Block Diagram Wire Connections The following factors should be considered when wiring the RPS SDS and DUT l Load wire current carrying capacity l Load wire insulation rating must be equivalent to the maximum output voltage l Load wire voltage dro...

Page 305: ...Connections with Local Sensing Connections with Remote Sensing Keysight RP7900 Series Operating and Service Guide 305 Appendix A Keysight SD1000A Safety Disconnect System ...

Page 306: ...e 500 V 5 kw unit to one SDS unit and still be within the maximum current rating of 60 A l In a master slave configuration connect the SDS interface cable to the master RP7900 unit l For detailed connection information for paralleled units refer to Multiple Unit Connections l If remote sensing is being used connect the sense leads of both RP7900 units to the RPS sense terminals on the SDS unit l I...

Page 307: ...9 Power On lamp green 24V 10 Power On lamp green 24V return 11 Relays Closed lamp yellow 24V 12 Relays Closed lamp yellow 24V return Fixture Cover M8 Connector Rear panel pinoutview Typical connections Pin Description 1 Safety coverswitch pins 1 2 switch contactnormally open 2 Safety coverswitch pins 1 2 switch contactnormally open 3 Safety coverswitch pins 3 4 switch contactnormally open 4 Safety...

Page 308: ...ge24 28 AWG M8 female FixtureCover M8 1681185 Wiregauge22 28 AWG M8 male DI DO M8 1681169 Wiregauge22 28 AWG Typical Customer supplied Components Component Description Partnumber ESTOP switch 2 poleNC latching compatiblewith 24V Eaton C22 PVT45P K02 RESETlamp switch BlueLED 24V with momentary contactNO switch Eaton C22S DL B K10 24 POWER ONlamp Green LED 24V Eaton C22 L G 24 RELAYS CLOSED lamp Yel...

Page 309: ...he RP7900 or the SCPI command FrontPanel Menu Reference SCPI Command Select System SDS Check þhardware present SYST SDS ENAB ON Step 5 Connect the SDS unit to the RP7900 power supply If the attempt to connect to the SDS fails the RP7900 unit will go into an SDP protection FrontPanel Menu Reference SCPI Command Select System SDS Config Click the Connect button to connect the SDS SYST SDS CONN Step ...

Page 310: ...e discharging the DUT 6 Auxiliary output is disabled 7 General purpose output is disabled As part of the safety disconnect sequence the SDS will discharge the UUT terminals to a level under 40V within three seconds This provides for an additional level of safety at the UUT This is accomplished by switching a 25 kΩ resistance for Option 500 and a 97 5 kΩ resistance for Option 950 across the output ...

Page 311: ...ncludes opening the main and sense relays and discharging the unit under test Pressing ESTOP is a latched safety state requiring the operator to reset the SDS to exit the safe state The ESTOP signals are located on the Remote Interface connector on the SDS rear panel The opening sequence in response to an ESTOP event is as follows 1 Open the power relays 2 Open the sense relays 3 Disable the power...

Page 312: ...turning the SDS to the previous state The fixture cover signals are located on the Fixture Cover connector on the SDS rear panel The operating sequence of the SDS in response to an open fixture cover input is as follows 1 Opens the power relays 2 Opens the sense relays 3 Disables the power supply output 4 Discharges the UUT 5 Returns the SDS and power supply to the prior state when the cover is cl...

Page 313: ...r is enabled via the front panel or a SCPI command the SDS relays can be enabled or disabled l The SDS contactor check will reset when both the SDS relays and the contactor are disabled The command processing time is much faster than the time it takes to change the relay state of the contactor If you quickly send an AC contactor enable command then an off command and then another on command the di...

Page 314: ......

Page 315: ... 13 289 Clear Status 252 CLS 196 252 command language quick reference 24 Command Separators 170 Command Terminators 170 communication remote inter face 93 Compatibility Commands 260 Connections interface 83 parallel 78 series 82 signle unit 66 Contacting Keysight 15 Current 90 Current sharing 110 Current sinking 118 CURRent Subsyetem 183 D data logging 141 DC Offset 92 DC Offset Voltage 92 DIGital...

Page 316: ... 169 K Keywords 170 L Legal information 9 LIST Subsyetem 204 LXI Command 207 M Maintenance 287 Making Measurements 145 MEASure Subsystem 208 menus 21 Message Available 199 Models 33 N Non Volatile Settings 249 O OPC 197 OPC 197 OPT 198 Options 34 Output current 90 list 128 sequencing 134 transient 124 Output Step 127 OUTPut Subsystem 210 Output Voltage 89 over current 119 over temperature 119 over...

Page 317: ... Status System 252 Self test 200 Self test procedure 290 SENSe Subsyetem 217 Service 287 Set DC Offset Voltage 92 Set Output Current 90 Set Output Voltage 89 Set Over voltage 91 SOURce Subsyatem 220 Specificatons RP7900 regenerative 35 52 SRE 199 Standard Event Summary 199 Standard Operation Register 199 Standard Operation Sum mary 199 State storage 161 Status Byte 199 Status Byte Register 199 Sta...

Page 318: ...Voltage 89 VOLTage Subsyetem 235 W WAI 200 Wait for trigger 200 Watt hour measurements 146 318 RP7900 Series Operating and Service Guide ...

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