Keysight N8700 User Manual
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Keysight N8700 User Manual

Keysight series system dc power supply
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Keysight Series N8700
System DC Power
Supply
User's Guide

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Summary of Contents for Keysight N8700

  • Page 1 Keysight Series N8700 System DC Power Supply User’s Guide...

  • Page 4: Legal Notices

    Software and technical data rights for a particular purpose. Keysight shall granted to the federal government include not be liable for errors or for incidental or only those rights customarily provided to consequential damages in connection end user customers.

  • Page 5: Safety Notices

    Terminal is at earth potential. impaired if it is used in a manner not product. Return the product to a Keysight specified in the operation instructions. Sales and Service Office for service and Neutral conductor on...
  • Page 6 In the United States: (800) 829-4444 In Europe: 31 20 547 2111 In Japan: 0120-421-345 Or use our Web link for information on contacting Keysight in your country or specific location: www.keysight.com/find/assist Or contact your Keysight Technologies Representative.

  • Page 7: Table Of Contents

    Contents 1 - Quick Reference The Keysight N8700 DC Power Supplies – At a Glance ......10 The Front Panel - At a Glance ................. 12 The Rear Panel – At a Glance ................. 14 2 - Installation General Information ..................18 Inspecting the Unit ...................
  • Page 8 Types of Service Available................132 Repackaging for Shipment................132 Operating Checklist ..................132 Error Messages ....................134 Recycling Plastic Components..............138 Appendix D - Compatibility Differences – In General ................140 Compatibility Command Summary ............... 141 Index ................................143 Series N8700 User’s Guide...

  • Page 9: Quick Reference

    Quick Reference The Keysight N8700 DC Power Supplies – At a Glance ......10 The Front Panel - At a Glance ................. 12 The Rear Panel – At a Glance ................. 14 This chapter concisely describes the Keysight Technologies Series N8700 Power Supplies.

  • Page 10: The Keysight N8700 Dc Power Supplies - At A Glance

    1 Quick Reference The Keysight N8700 DC Power Supplies – At a Glance The Keysight Technologies Series N8700 System DC Power Supplies are general-purpose, 2U (two rack units) high, switching power supplies that are available with a wide variety of output voltage and current ratings.

  • Page 11: Programmable Functions

    0 – 11A N8742A 0 – 600V 0 – 5.5A Note 1: Minimum output voltage is ≤ 0.2% of the rated output voltage. Note 2: Minimum output current is ≤ 0.4% of the rated output current. Series N8700 User’s Guide...

  • Page 12: The Front Panel - At A Glance

    Start-Up function: Press and hold the OUT ON button to toggle between the Safe-Start and Auto-Restart modes. The display cycles between SAF and AU7. Releasing the OUT ON button while one of the modes is displayed selects that mode. Series N8700 User’s Guide...
  • Page 13 9 – LAN indicator Indicates the LAN has been configured and is operating normally. Set another unit on the N8700 unit’s Web home page and the LAN indicator blinks to identify that unit. 10 – LAN button View address: Press the LAN button to view the IP and Ethernet address. The display first scrolls through the four segments of the IP address, followed by the six segments of the Ethernet (EA) address.

  • Page 14: The Rear Panel - At A Glance

    SHOCK HAZARD The AC power cable provides a chassis ground through the WARNING ground conductor. Be certain that your power source is three-conductor for single-phase models or four-conductor for 3-phase models with the ground conductor (green/yellow) connected to earth ground. Series N8700 User’s Guide...
  • Page 15 Down: The output current is programmed by the front panel. programming The output current is programmed by the external resistor. 9 – Enable/Disable control Down: The J1 Enable+/Enable– pins are not active. The J1 Enable+/Enable– pins are active. Series N8700 User’s Guide...
  • Page 16 Current Prog. Return Signal return for Pin 10. Referenced to pin 12. Pin 24: Current Monitor Output for monitoring the output current. Pin 25: Parallel Output for current balancing in parallel operation. Connected internally to pin 24. Series N8700 User’s Guide...

  • Page 17: Installation

    Before getting started, check the list under “Items Supplied” and verify that you have received these items with your instrument. If anything is missing, please contact your nearest Keysight Sales and Service Office.

  • Page 18: General Information

    When you receive your power supply, inspect it for any obvious damage that may have occurred during shipment. If there is damage, notify the shipping carrier and nearest Keysight Sales and Service Office immediately. Refer to Appendix C for more information.

  • Page 19: Installing The Unit

    Do not operate the power supply in an area where the ambient temperature exceeds +40°C. Keysight N8700 power supplies generate magnetic fields, which may affect the NOTE operation of other instruments. If your equipment is susceptible to magnetic fields, do not position it adjacent to the power supply.

  • Page 20: Rack Installation

    Do not block the air intake at the front, or the exhaust at the rear of the unit. The Keysight N8700 power supplies can be mounted in a standard 19- inch rack panel or cabinet. They are designed to fit in two rack units (2U) of space.

  • Page 21: Connecting The Line Cord

    450V, 20 A, 70 °C 4 x 2.5 mm 2.5 m Harmonized 2 Note2 (380-415 VAC nominal) Note 1: 2-wire plus one green/yellow safety ground conductor 2: 3-wire plus one green/yellow safety ground conductor : 10 AWG corresponds to 4mm Series N8700 User’s Guide...
  • Page 22 208 V, phase- to-phase distribution. phase Disconnect device phase phase Option 400 units wired for nominal AC input Earth 380 – 415 VAC (safety ground) 400 V 3-phase power supply attached to 400 V, phase- to-phase distribution. phase Series N8700 User’s Guide...
  • Page 23 Tightening torque: 14 – 16.2 ft-lb (19 – 22 Nm). Refer to the following figure. 3-phase cable (shown) has four conductors. Single-phase cable has three conductors. Series N8700 User’s Guide...
  • Page 24 Route the wires inside the cover to prevent pinching while sliding the cover towards the rear panel for attachment. Fasten the cover to the unit using the M3 x 8mm flat head screws provided. Screw tightening torque: 4.8 in-lb (0.54 Nm). Refer to the following figure. Series N8700 User’s Guide...

  • Page 25: Connecting The Load

    60 °C. For ambient temeratures other than 30 °C, multiply the above ampacities by the following constants: Temp (°C) Constant Temp (°C) Constant 21-25 1.08 31-35 0.91 26-30 1.00 36-40 0.82 Note 2. Resistance is nominal at 20 °C wire temperature. Series N8700 User’s Guide...
  • Page 26 Flat washers Spring washer Install the shield after you have finished connecting the load wires. Route the load wires through the openings in the back of the shield. If necessary, use diagonal cutters and remove the Series N8700 User’s Guide...
  • Page 27 The connector specifications are as follows: Wire Size: AWG 18 to AWG 10 Stripping Length: 10 mm (0.4 in) Torque: 4.4 – 5.3 in-lb (0.5 – 0.6 Nm) Series N8700 User’s Guide...
  • Page 28 Attach the load wires to the notched shield tab using a tie-wrap or equivalent as shown in the following figure. Load wires Series N8700 User’s Guide...

  • Page 29: Output Voltage Sensing

    The following figure illustrates the internal connections of the J2 connector. Power Load Supply Rem.sense Load lines, twisted Local sense Error pair, shortest length Amp. Local sense possible. Rem.sense Series N8700 User’s Guide...

  • Page 30: Remote Sensing

    Turn on the power supply.  Load lines. Twisted pair shortest length possible. Load Power Supply Rem.sense Local sense ocal sense Rem.sense Sense lines. Twisted pair or shielded wires. Series N8700 User’s Guide...

  • Page 31: Load Considerations

    Sense either at the remote distribution terminals or, if one load is more sensitive than the others, directly at the critical load. Distribution terminal Load#1 Power Supply Load#2 Rem.sense Local sense Load#3 ocal sense Rem.sense Series N8700 User’s Guide...

  • Page 32: Battery Charging

    + output connection of the power supply. Connect the diode’s cathode to the + battery terminal or external voltage source. Connect the diode’s anode to the + output terminal of the power supply. Series N8700 User’s Guide...

  • Page 33: Parallel Connections

    As short as possible MASTER Twisted POWER SUPPLY pair J1-25 J1-12 Parallel Common LOAD Curr Prog Curr Prog Rtn J1-8 J1-12 J1-10 J1-23 SLAVE POWER SUPPLY Local Sensing Series N8700 User’s Guide...

  • Page 34: Setting Up The Master Unit

    The current limit of each unit should be programmed to the desired load current limit divided by the number of parallel units. Series N8700 User’s Guide...

  • Page 35: Series Connections

    It is recommended that diodes be connected in parallel with each output to prevent reverse voltage during start up sequence or in case one unit shuts down. Each diode should be rated to at least the rated output voltage and output current of the power supply. Series N8700 User’s Guide...
  • Page 36 The analog programming circuits of these power supplies are referenced to the negative sense (-S) potential. Therefore, the analog voltage circuits used to control each series-connected unit must be separated and floated from each other. Series N8700 User’s Guide...

  • Page 37: J1 Connector Connections

    J1. Chapter 3 describes how to configure the J1 connector when using it to program the output voltage and current. Series N8700 User’s Guide...

  • Page 39: Operating The Power Supply Locally Turn-On Check-Out

    Operating the Power Supply Locally Turn-On Check-Out ................... 40 Normal Operation ....................42 Protection Functions ..................43 Output On/Off Controls..................46 Analog Programming of Output Voltage and Current ......... 49 This chapter contains examples on how to operate your power supply from the front panel.

  • Page 40: Operating The Power Supply Locally

    Use the voltage knob and raise the output voltage of the unit until it approaches the OVP setting. Check to make sure that the output voltage cannot be set higher than the OVP setting. Series N8700 User’s Guide...
  • Page 41 Press the OUT ON button to reset the OCP protection. The output should return to its previous setting. Turn the POWER switch off. Remove the short from the +V and –V output terminals. Series N8700 User’s Guide...

  • Page 42: Normal Operation

    5 seconds after the adjustment has been completed and then go blank because the output is off. The current knob can be set to coarse or fine resolution. Press the FINE button to select finer resolution. The FINE indicator turns on. Series N8700 User’s Guide...

  • Page 43: Protection Functions

    Refer to Appendix A for the maximum OVP settings. Use one of the following methods to reset the OVP circuit after it activates. If the condition that caused the over-voltage shutdown is still present, the OVP circuit will turn the output off again. Series N8700 User’s Guide...
  • Page 44 OUT ON button to reset OCP. With this method, the over- current protection is disabled. If the load current is still higher than the current limit setting, the power supply will only attempt to limit the current at the current limit setting. Series N8700 User’s Guide...
  • Page 45 NOTE If the front panel has been locked from the front panel, it cannot be unlocked by SYST:COMM:RLST. Conversely, if the front panel has been locked by SYST:COMM:RLST, it cannot be unlocked from the front panel. Series N8700 User’s Guide...

  • Page 46: Output On/Off Controls

    Shut-Off function enables or disables the output according to the signal level or the open/short applied to J1 pin 15. When the output has been disabled by the Shut-Off function, the display shows SO to indicate the output is disabled. Series N8700 User’s Guide...
  • Page 47 You must also press the OUT ON button or send an OUTPut:PROTection:CLEar command to resume operation. SW1 switch 9 ENA+/ENA– pins Output Display Prot Indicator Down (default) Not active Voltage/Current Opened Blinking Shorted Voltage/Current Series N8700 User’s Guide...

  • Page 48: Power Supply Ok Signal

    Power Supply OK signals are referenced to Chassis Common (J1 pins 2 and 3). POWER SUPPLY POWER SUPPLY POWER SUPPLY J1-2,3 J1-16 J1-15 J1-2,3 J1-16 J1-15 J1-2,3 J1-16 J1-15 Supply OK Shut Off Supply OK Shut Off Supply OK Shut Off Series N8700 User’s Guide...

  • Page 49: Analog Programming Of Output Voltage And Current

    J1 pin 21 Output voltage/ function signal current control Both Down (default) No effect Open Local Either one, or both Up 0 or Short 0~0.6V Analog 1 or Open Open Local CURRENT LIMIT OUTPUT VOLTAGE PROGRAMMING PROGRAMMING Series N8700 User’s Guide...
  • Page 50 SW1 switch 3 Voltage Programming Current Programming (J1 pin 9) (J1 pin 10) Down (default) 0 – 5V 0 – 5V 0 – 10V 0 – 10V Series N8700 User’s Guide...
  • Page 51 SW1 switch 3 Voltage Programming Current programming (J1 pin 9) (J1 pin 10) Down (default) 0 – 5 kΩ 0 – 5 kΩ 0 – 10 kΩ 0 – 10 kΩ Series N8700 User’s Guide...
  • Page 52 J1 pin 11 Voltage Monitor J1 pin 24 Current Monitor 0 – 10V J1 pin 11 Voltage Monitor J1 pin 24 Current Monitor J1 pin 12 is the signal common for J1 pins 11 and 24. Series N8700 User’s Guide...

  • Page 53: Operating The Power Supply Remotely

    Operating the Power Supply Remotely Connecting to the Interfaces................54 SCPI Commands – an Introduction ..............63 This chapter contains information on how to configure the three remote interfaces that are provided on the back of the instrument. In most cases you can connect your power supply to any one of these interfaces and be up and running with a minimum amount of configuration.

  • Page 54: Connecting To The Interfaces

    General Purpose Interface Bus (GPIB). The following figure illustrates a typical GPIB interface system. If you have not already done so, install the Keysight IO Libraries Suite from the Automation-Ready CD-ROM that is shipped with your product.
  • Page 55 The VISA address is: USB0::2391::2055::model-serialnumber::0:INSTR NOTE where 2391 is the Keysight code, 2055 is the N8700 code, model is the 6- character model number, and serialnumber is the 10-character serial number located on the label on the side of the unit.
  • Page 56 IP address has been assigned. Press the front panel LAN button to view the IP address. Each Keysight N8700 power supply is shipped with a default hostname with the NOTE format: A-modelnumber-serialnumber where modelnumber is the instrument’s 6-character model number (e.g.
  • Page 57 Press the front panel LAN button to view the IP address. Use the Connection Expert utility of the Keysight IO Libraries Suite to add the N8700 power supply and verify a connection. To add the instrument, you can request the Connection Expert to discover the instrument.
  • Page 58 These latter methods are a convenient way to communicate with the power supply without using I/O libraries or drivers. Ethernet Connection Monitoring Keysight N8700 power supplies that have the LXI label on the front panel provide Ethernet connection monitoring. With Ethernet connection monitoring, the instrument’s LAN port is continually...
  • Page 59 Using Telnet In an MS-DOS Command Prompt box type: telnet hostname 5024 where hostname is the N8700 hostname or IP address, and 5024 is the instrument’s telnet port. You should get a Telnet session box with a title indicating that you are connected to the power supply.
  • Page 60 IP Address This value is the instrument’s Internet Protocol (IP) address. An IP Address is four decimal numbers from 0 to 255 separated by periods. It is required for all IP and TCP/IP communications with the instrument. Series N8700 User’s Guide...
  • Page 61 The configuration parameters on pre-Windows CE instruments (instruments NOTE manufactured before mid-2014) are slightly different than those described above. For a description of these previous parameters, access the Modify Configuration dialog; then click on the Help with this Page button. Series N8700 User’s Guide...
  • Page 62 Get IP Address Automatic Alternate DNS server Blank IP Address 169.254.57.0 Desired Hostname A-N87xxA-xxxxx Subnet Mask 255.255.0.0 Description Keysight N87xxA (serial#) Default Gateway 0.0.0.0 mDNS Enabled Enabled DNS Server Address Configuration Automatic Password Blank Preferred DNS server Blank Series N8700 User’s Guide...

  • Page 63: Multiple Commands In A Message

    For the first command in a message, the path is a null string. For each subsequent command the path is defined as the characters that make up the keywords of the Series N8700 User’s Guide...
  • Page 64 ABORt<NL> VOLTage 20<NL> VOLTage:TRIGgered MINimum<NL> Colons (:) separate higher-level keywords from lower-level keywords. Use a blank space to separate parameters from keywords. If a command requires more than one parameter, use commas to separate adjacent parameters. Series N8700 User’s Guide...
  • Page 65 Three permitted command terminators are: newline (<NL>), which is ASCII decimal 10 or hex 0A.  end or identify (<END>)  both of the above (<NL><END>).  In the examples of this guide, the message terminator is assumed. Series N8700 User’s Guide...

  • Page 66: Parameter Types

    Arbitrary ASCII Response Data. Permits the return of <AARD> undelimited 7-bit ASCII. This data type has an implied message terminator. <SRD> String Response Data. Returns string parameters enclosed in double quotes. Series N8700 User’s Guide...
  • Page 67 Device Clear. Device Clear also prepares the power supply to accept a new command string. The following statement shows how to send a device clear over the GPIB interface using Keysight BASIC: CLEAR 705 IEEE-488 Device Clear...

  • Page 69: Language Reference

    Language Reference SCPI Command Summary ................70 Calibration Commands ..................72 Measure Commands..................73 Output Commands .................... 74 Source Commands .................... 75 Status Commands ..................... 77 System Commands ................... 83 Trigger Commands .................... 85 This section gives the syntax and parameters for all the IEEE 488.2 SCPI Subsystem commands and Common commands used by the power supply.

  • Page 70: Scpi Command Summary

    :PROTection :STATe <Bool> Enables/disables over-current protection VOLTage [:LEVel] [:IMMediate][:AMPLitude] <NRf+> Sets the output voltage :TRIGgered[:AMPLitude] <NRf+> Sets the triggered output voltage :LIMit :LOW <NRf+> Sets the low-voltage limit :PROTection [:LEVel] <NRf+> Sets the over-voltage protection level Series N8700 User’s Guide...

  • Page 71: Common Commands

    Saves an instrument state *SRE <NRf> Set service request enable register *SRE? Return service request enable register *STB? Return status byte *TRG Trigger *TST Always returns a “0” *WAI Holds off bus until all device commands done Series N8700 User’s Guide...

  • Page 72: Calibration Commands

    This command lets you change the calibration password. A new password is automatically stored in nonvolatile memory. If the password is set to 0, password protection is removed and the ability to enter calibration mode is unrestricted. The default password is 0 (zero). Series N8700 User’s Guide...

  • Page 73: Measure Commands

    Measurement overflows return a reading of 9.91E+37. MEASure[:SCALar]:CURRent[:DC]? MEASure[:SCALar]:VOLTage[:DC]? These queries perform a measurement and return the DC output current in amperes or DC output voltage in volts. Series N8700 User’s Guide...

  • Page 74: Output Commands

    OUTPut:PON:STATe is AUTO. All conditions that generate the fault must be removed before the latch can be cleared. The output is then restored to the state it was in before the fault condition occurred. Series N8700 User’s Guide...

  • Page 75: Source Commands

    1.05; whichever is lower. The minimum value is either the value in the table, or the low voltage setting divided by 0.95; whichever is higher. Series N8700 User’s Guide...
  • Page 76 The maximum setting is the value in the table. An over-voltage condition can be cleared with the Output Protection Clear command after the condition that caused the OVP trip is removed. Model (V rating) 100V 150V 300V 600V Min. protection limit Max. protection limit Series N8700 User’s Guide...

  • Page 77: Status Commands

    Data LOGICAL LOGICAL OPER *STB? *SRE<n> *SRE? *ESR? *ESE<n> *ESE? OPERATION STATUS SERVICE CONDITION PTR/NTR EVENT ENABLE REQUEST GENERATION LOGICAL 10 1024 1024 1024 1024 STAT:OPER:COND? STAT:OPER:ENAB <n> STAT:OPER:ENAB STAT:OPER:PTR |:NTR <n> STAT:OPER:PTR |:NTR ? STAT:OPER:EVEN? Series N8700 User’s Guide...
  • Page 78 (OPER) of the Status Byte register. This bit (bit 7) is the logical OR of all the Operational Event register bits that are enabled by the Status Operation Enable register. The Preset value = 0. Series N8700 User’s Guide...
  • Page 79 OV = The output is disabled by the over-voltage protection STATus:QUEStionable:CONDition? This query returns the value of the Questionable Condition register. That is a read-only register, which holds the real-time (unlatched) questionable status of the power supply. Series N8700 User’s Guide...
  • Page 80 Clears the Standard Event Status, Operation Status Event, and  Questionable Status Event registers Clears the Status Byte and the Error Queue  If *CLS immediately follows a program message terminator  (<NL>), then the output queue and the MAV bit are also cleared. Series N8700 User’s Guide...
  • Page 81 *OPC? prevents processing of all subsequent commands. It can be used at the end of a command line so that the program can monitor the bus for data until it receives the "1" from the Output Queue. Series N8700 User’s Guide...
  • Page 82 This command instructs the power supply not to process any further commands until all pending operations are completed. Pending operations are as defined under the *OPC command. *WAI can be aborted only by sending the power supply a Device Clear command. Series N8700 User’s Guide...

  • Page 83: System Commands

    ERRORS (see Appendix C for error codes). SYSTem:VERSion? This query returns the SCPI version number to which the instrument complies. The returned value is of the form YYYY.V, where YYYY represents the year and V is the revision number for that year. Series N8700 User’s Guide...
  • Page 84 This command stores the present state of the power supply to memory locations 0 through 15. All saved instrument states are lost when the unit is turned off. NOTE *TST? Does nothing. This query always returns a zero. Series N8700 User’s Guide...

  • Page 85: Trigger Commands

    Only BUS can be selected as the trigger source. *TRG This command generates a trigger when the trigger source is set to BUS. The command has the same affect as the Group Execute Trigger (<GET>) command. Series N8700 User’s Guide...

  • Page 87: Programming Examples

    You have a royalty-free right to use, modify, reproduce and distribute the example programs (and/or any modified version) in any way you find useful, provided you agree that Keysight Technologies has no warranty, obligations, or liability for any example programs.

  • Page 88: Output Programming Example

    '1 for on, 0 for off With Instrument ' Send a power reset to the instrument .WriteString "*RST" ' Query the instrument for the IDN string .WriteString "*IDN?" IDN = .ReadString ' Set the voltage .WriteString "VOLT" & Str$(VoltSetting) Series N8700 User’s Guide...
  • Page 89 ' Check instrument for any errors .WriteString "Syst:err?" ErrString = .ReadString ' give message if there is an error If Val(ErrString) Then MsgBox "Error in instrument!" & vbCrLf & ErrString End If End With End Sub Series N8700 User’s Guide...

  • Page 90: Trigger Programming Example

    ' amps trigVoltSetting = 5 ' volts trigCurrSetting = 3 ' amps With Instrument ' Send a power reset to the instrument .WriteString "*RST" ' Query the instrument for the IDN string .WriteString "*IDN?" IDN = .ReadString Series N8700 User’s Guide...
  • Page 91 ' Check instrument for any errors .WriteString "Syst:err?" ErrString = .ReadString ' Give message if there is an error If Val(ErrString) Then MsgBox "Error in instrument!" & vbCrLf & ErrString End If End With End Sub Series N8700 User’s Guide...

  • Page 93: Appendix A Specifications

    Outline Diagram ....................98 This chapter lists the specifications and supplemental characteristics of the Keysight N8700 power supplies. A dimensional line drawing of the unit is included at the end of the chapter. Unless otherwise noted, specifications are warranted over the ambient temperature range of 0°to 40°C.

  • Page 94: Performance Specifications

    Appendix A Specifications Performance Specifications Keysight Models N8731A – N8742A and Models N8754A – N8762A Model 3.3kW N8731A N8732A N8733A N8734A N8735A N8736A N8737A N8738A N8739A N8740A N8741A N8742A N8754A N8755A N8756A N8757A N8758A N8759A N8760A N8761A N8762A DC Output Ratings: NOTE 1 Voltage 3.3kW...

  • Page 95: Supplemental Characteristics

    Specifications Appendix A Supplemental Characteristics Keysight Models N8731A – N8742A and Models N8754A – N8762A Model 3.3kW N8731A N8732A N8733A N8734A N8735A N8736A N8737A N8738A N8739A N8740A N8741A N8742A N8754A N8755A N8756A N8757A N8758A N8759A N8760A N8761A N8762A Output Response Time: (to settle to within ±1.0% of the rated output, with a resistive load) Up, full load 3.3kW...
  • Page 96 LXI Core 2011 (only applies to units with the LXI label on the front panel) USB 2.0 Requires Keysight IO Library version M.01.01 and up, or 14.0 and up 10/100 LAN Requires Keysight IO Library version L.01.01 and up, or 14.0 and up...
  • Page 97 3-phase models: 0.94 at nominal input and rated output power 5kW units Efficiency 82% – 88% 3.3kW units 83% – 88% 5kW units Inrush Current < 50A Single-phase models < 50A 3-phase, 200V models < 20A 3-phase, 400V models Series N8700 User’s Guide...

  • Page 98: Outline Diagram

    92.0mm 92.0mm 442.5+/-1.0mm Bus-Bar Detail Output Cover Detail 8V to 100V Models 8V to 100V Models 5.0mm 30.0mm 10.5mm 50.0mm 108.0mm NOTES: Holes marked “A” are for chassis slide mounting. Use only screws designated #10-32x0.38” maximum. Series N8700 User’s Guide...

  • Page 99: Appendix B - Verification And Calibration

    This appendix also includes calibration procedures for the Keysight N8700 power supplies. Instructions are given for performing the procedures from a controller over the GPIB. Perform the verification tests before calibrating your power supply. If the power...

  • Page 100: Equipment Required

    150V, 400A, 3.3kW minimum for Models N8731- N8740A Keysight N3300A mainframes (up to 150V, 250A, 5kW minimum for Models N8754- N8760A 4); Keysight N3305A modules (up to 11); Keysight N3306A modules (up to 600 V, 300 A, 5kW minimum - optional for models...

  • Page 101: Measurement Techniques

    DC voltmeter, Load Current scope, or scope, or Resistor shunt rms voltmeter rms voltmeter Differential probe pair Electronic load Electronic load Differential amplifier or resistor or resistor output 50 ohm termination input Scope or rms voltmeter Series N8700 User’s Guide...
  • Page 102 Open the load and record the voltage reading from the DVM again. The difference between the DVM 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 CV Load Effect. Series N8700 User’s Guide...
  • Page 103 AC coupling. Set the oscilloscope’s time base to 5 ms/div, and the vertical scale to 10 mV/div. Turn the bandwidth limit on (usually 20 or 30 MHz), and set the sampling mode to peak detect. Series N8700 User’s Guide...
  • Page 104 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.
  • Page 105 AC peaks of the output current ripple, several DC measurements should be made and averaged. With a Keysight 3458A, you can set the voltmeter to do this automatically. From the instrument’s front panel, program 100 power line cycles per measurement. Press NPLC 100 ENTER.
  • Page 106 AC peaks of the output current ripple, several DC measurements should be made and averaged. If you are using a Keysight 3458A, you can set up the voltmeter to do this automatically. From the instrument’s front panel, program 100 power line cycles per measurement.
  • Page 107 Verification and Calibration Appendix B Test Record – Keysight N8731A [8V, 400A, 3.3kW] Keysight N8731A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 16 mV _____________ 24 mV Measurement Readback Vout −...
  • Page 108 Appendix B Verification and Calibration Test Record – Keysight N8732A [10V, 330A, 3.3kW] Keysight N8732A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 20 mV _____________ 30 mV Measurement Readback Vout −...
  • Page 109 Verification and Calibration Appendix B Test Record – Keysight N8733A [15V, 220A, 3.3kW] Keysight N8733A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 30 mV _____________ 45 mV Measurement Readback Vout −...
  • Page 110 Appendix B Verification and Calibration Test Record – Keysight N8734A [20V, 165A, 3.3kW] Keysight N8734A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 40 mV _____________ 60 mV Measurement Readback Vout −...
  • Page 111 Verification and Calibration Appendix B Test Record – Keysight N8735A [30V, 110A, 3.3kW] Keysight N8735A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 60 mV _____________ 90 mV Measurement Readback Vout −...
  • Page 112 Appendix B Verification and Calibration Test Record – Keysight N8736A [40V, 85A, 3.3kW] Keysight N8736A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 80 mV _____________ 120 mV Measurement Readback Vout −...
  • Page 113 Verification and Calibration Appendix B Test Record – Keysight N8737A [60V, 55A, 3.3kW] Keysight N8737A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 120 mV _____________ 180 mV Measurement Readback Vout −...
  • Page 114 Appendix B Verification and Calibration Test Record – Keysight N8738A [80V, 42A, 3.3kW] Keysight N8738A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 160 mV _____________ 240 mV Measurement Readback Vout −...
  • Page 115 Verification and Calibration Appendix B Test Record – Keysight N8739A [100V, 33A, 3.3kW] Keysight N8739A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 200 mV _____________ 300 mV Measurement Readback Vout −...
  • Page 116 Appendix B Verification and Calibration Test Record – Keysight N8740A [150V, 22A, 3.3kW] Keysight N8740A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 300 mV _____________ 450 mV Measurement Readback Vout −...
  • Page 117 Verification and Calibration Appendix B Test Record – Keysight N8741A [300V, 11A, 3.3kW] Keysight N8741A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 600 mV _____________ 900 mV Measurement Readback Vout −...
  • Page 118 Appendix B Verification and Calibration Test Record – Keysight N8742A [600V, 5.5A, 3.3kW] Keysight N8742A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 1.2 V _____________ 1.8 V Measurement Readback Vout −...
  • Page 119 Verification and Calibration Appendix B Test Record – Keysight N8754A [20V, 250A, 5kW] Keysight N8754A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 40 mV _____________ 70 mV Measurement Readback Vout −...
  • Page 120 Appendix B Verification and Calibration Test Record – Keysight N8755A [30V, 170A, 5kW] Keysight N8755A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 60 mV _____________ 105 mV Measurement Readback Vout −...
  • Page 121 Verification and Calibration Appendix B Test Record – Keysight N8756A [40V, 125A, 5kW] Keysight N8756A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 80 mV _____________ 140 mV Measurement Readback Vout −...
  • Page 122 Appendix B Verification and Calibration Test Record – Keysight N8757A [60V, 85A, 5kW] Keysight N8757A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 120 mV _____________ 210 mV Measurement Readback Vout −...
  • Page 123 Verification and Calibration Appendix B Test Record – Keysight N8758A [80V, 65A, 5kW] Keysight N8758A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 160 mV _____________ 280 mV Measurement Readback Vout −...
  • Page 124 Appendix B Verification and Calibration Test Record – Keysight N8759A [100V, 50A, 5kW] Keysight N8759A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 200 mV _____________ 350 mV Measurement Readback Vout −...
  • Page 125 Verification and Calibration Appendix B Test Record – Keysight N8760A [150V, 34A, 5kW] Keysight N8760A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 300 mV _____________ 525 mV Measurement Readback Vout –...
  • Page 126 Appendix B Verification and Calibration Test Record – Keysight N8761A [300V, 17A, 5kW] Keysight N8761A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 0.60 V _____________ 1.05 V Measurement Readback Vout −...
  • Page 127 Verification and Calibration Appendix B Test Record – Keysight N8762A [600V, 8.5A, 5kW] Keysight N8762A Report No _______________ Date __________________ Description Minimum Specs. Results Maximum Specs. Voltage Programming & Readback Minimum Voltage Vout 1.2 V _____________ 2.1 V Measurement Readback Vout −...

  • Page 128: Calibration

    If a timeout occurs in your VISA application, you may need to change the VI_ATTR_TMO_VALUE in the ViSetAttribute function. Voltage Programming and Measurement Calibration Step 1. Connect the Keysight 3458A voltage input to the output. Step 2. Enable voltage calibration mode. *RST...
  • Page 129 CAL:STAT OFF Current Programming and Measurement Calibration Step 1. Connect a precision shunt resistor to an output. Connect the Keysight 3458A across the shunt. The shunt should be able to measure at least 120% of the power supply’s rated full-scale current.

  • Page 131: Appendix C Service

    Repackaging for Shipment................132 Operating Checklist ..................132 Error Messages ....................134 Recycling Plastic Components..............138 This chapter discusses the procedures involved for returning a failed instrument to Keysight Technologies for service or repair. A procedure is included for diagnosing specific symptoms.

  • Page 132: Types Of Service Available

    Repackaging for Shipment If the unit is to be shipped to Keysight Technologies for service or repair, be sure to: Attach a tag to the unit identifying the owner and indicating the ...
  • Page 133 2. Front panel controls are nonfunctional. Is the power supply in Local Lockout mode? Turn off the POWER switch and wait until the display turns off. Turn on the POWER switch and press the REM/LOC button. Series N8700 User’s Guide...

  • Page 134: Error Messages

    Attempted to set the over-voltage protection below the voltage setting. VOLT setting conflicts with VOLT:LIM:LOW setting Attempted to program the voltage below the under-voltage limit setting. VOLT:LIM:LOW setting conflicts with VOLT setting Attempted to set the under-voltage limit above the voltage setting Series N8700 User’s Guide...
  • Page 135 A suffix was incorrectly specified for a numeric parameter. Suffix too long −134 The suffix contains more than 12 characters. Suffix not allowed −138 A suffix is not supported for this command. Character data error −140 Generic character data error Series N8700 User’s Guide...
  • Page 136 The device has insufficient memory to perform the requested operation. Lists not same length −226 One or more lists are not the same length. Data corrupt or stale −230 Possible invalid data. A new reading was started but not completed. Series N8700 User’s Guide...
  • Page 137 A condition causing an unterminated query error occurred. Query DEADLOCKED −430 A condition causing a deadlocked query error occurred. Query UNTERMINATED after indefinite response −440 A query was received in the same program message after a query indicating an indefinite response was executed. Series N8700 User’s Guide...

  • Page 138: Recycling Plastic Components

    LEXAN 243R NYLON 6/6 Line cord strain relief (qty 1) Polyamide PA Display insulator – clear (qty 1) LEXAN FR60 Cover insulator – clear (qty 1) LEXAN FR60 Chassis insulator – clear (qty 1) LEXAN FR60 Series N8700 User’s Guide...

  • Page 139: Appendix D Compatibility

    Compatibility Command Summary ............... 141 The Keysight N8700 power supplies are programmatically compatible with the Keysight 603xA power supplies. This means that you can remotely program the Keysight N8700 power supplies using the same commands that are used to program the 603xA power supplies.

  • Page 140: Differences - In General

    Appendix D Compatibility Differences – In General The following table documents the general differences between the way Compatibility commands work on the Keysight N8700 power supplies and the way they worked on the Keysight 603xA power supplies. Item Differences Queries The Keysight N8700 will respond to multiple queries.

  • Page 141: Compatibility Command Summary

    Compatibility Appendix D Compatibility Command Summary The following table documents the compatibility commands that the Keysight N8700 power supplies support. All compatibility commands are accepted; however, some commands do nothing. Compatibility Command Description Similar SCPI Command STAT:OPER:EVEN? ASTS? Queries the accumulated status (ASTS). The response represents the...
  • Page 142 CV – constant voltage CC – constant current OR – overrange OV – overvoltage tripped OT – overtemperature tripped AC – AC line voltge overage.dropout FOLD – foldback tripped ERR – programming error RI – remote inhibit tripped Series N8700 User’s Guide...

  • Page 143: Index

    ..............67 current programming accuracy ........105 synchronization ............. 67 current readback accuracy ..........105 common commands ............69 current shunt ..............101 *CLS ................. 80 CV/CC crossover ............... 43 *ESE ................. 81 CV/CC signal ..............43 Series N8700 User’s Guide...
  • Page 144 INIT CONT ..............85 inspection ................18 OCP ..................13 IO 54 OPER ..................82 IP Address................60 operating checklist ............132 items supplied ..............18 optional commands ............63 OUP..................13 OUT ON ................12 Series N8700 User’s Guide...
  • Page 145 ................46 trigger commands .............. 85 safety ................5, 19 TRIG ................. 85 SCPI TRIG SOUR ..............85 command completion........... 67 trigger programming example ......... 90 command path............... 63 turn-on check out .............. 40 commands ..............70 Series N8700 User’s Guide...
  • Page 146 USB ID string ..............55 voltage sensing ..............29 USB interface ..............55 UUL ..................13 UVL ..................13 warning .................. 5 Web server ................58 web URL’s ................6 verification ................99 wire sizes ................25 Series N8700 User’s Guide...
  • Page 147 This information is subject to change without notice. © Keysight Technologies 2009, 2014 Edition 4, November 2014 *N8700-90001* N8700-90001 www.keysight.com...

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