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N8700 User`s Guide

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1. I CED Ft 3 4 Slide the slotted tab on the protective shield s left side into the chassis slot and lock into place Insert the right side shield screw A previously removed to fix the shield to the chassis Screw tightening torque 4 8 5 3 in lb 0 54 0 6 Nm 5 Route the load wires to the tab at the top of the shield Ensure the wire length inside the shield is long enough to provide proper strain relief 6 Attach the load wires to the notched shield tab using a tie wrap or equivalent as shown in the following figure Load wires SET olaina p hf E f 34 besser J enn 26 Series N8700 User s Guide Output Voltage Sensing Installation 2 WARNING SHOCK HAZARD There is a potential shock hazard at the sense connector when using a power supply with a rated output greater than 40V Ensure that the local sense and remote sense wiring insulation rating is greater than or equal to the maximum output voltage of the power supply Ensure that the connections at the load end are shielded to prevent accidental contact with hazardous voltages
2. Opening for wire sizes from AWG 4 10 wire sizes AWG 2 0 3 0 Remove this cut out for Load Connections for 150V 300V and 600V Models WARNING SHOCK HAZARD Hazardous voltages may exist at the outputs and the load connections when using a power supply with a rated output greater than 40V To protect personnel against accidental contact with hazardous voltages ensure that the load and its connections have no accessible live parts Ensure that the load wiring insulation rating is greater than or equal to the maximum output voltage of the power supply The 150V 300V and 600V models have a four terminal wire clamp output connector The two left terminals are the positive outputs and the two right terminals are the negative outputs The connector specifications are as follows Wire Size AWG 18 to AWG 10 Stripping Length 10 mm 0 4 in Torque 4 4 5 3 in Ib 0 5 0 6 Nm Series N8700 User s Guide 25 2 Installation Connect load wires to the power supply output wire clamp connector as follows 1 Strip wires back approximately 10 mm 0 4 in 2 Loosen the connector terminal screws and insert the stripped wires into the terminal Tighten the terminal screws securely Positive Negative output output e 9 q MD I EE lt p Load wires
3. AWG equivalent nearest Metric Ampacity Resistance area in mm wire size Note 1 9 1000 feet Note 2 18 0 823 1 0 mm 14 6 385 16 1 31 1 5 mm 18 4 016 14 2 08 2 5 mm 25 2 526 12 3 31 4 mm 30 1 589 10 5 26 6 mm 40 0 9994 8 8 37 10 mm 60 0 6285 6 13 30 16 mm 80 0 3953 4 21 15 25 mm 105 0 2486 2 33 62 35 mm 140 0 1564 1 0 53 48 70 mm 195 0 0983 2 0 67 43 70 mm 225 0 0779 3 0 84 95 95 mm 260 0 0618 Note 1 Ampacity is based on 30 C ambient temperature with the conductor rated at 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 23 2 24 Installation Along with conductor temperature you must also consider voltage drop when selecting wire sizes Although the power supply will compensate for up to 5 volts in each load wire it is recommended to minimize the voltage drop to less than 1 volt to prevent excessive output power consumption from the power supply and poor dynamic response to load changes Load Connections for 8V to 100V Models SHOCK HAZARD Hazardous voltages may exist at the outputs and the load connections when using a power supply with a rated output greater than 40V To protect personnel against accidental contact with hazardous voltages ensure tha
4. o A jw N rh ESR ESE lt n gt ESE OPERATION STATUS SERVICE CONDITION PTR NTR EVENT ENABLE REQUEST GENERATION 32 LOGICAL 256 OR wTG3 32 cv 8 256 cc 1041024 1024 STAT OPER COND STAT OPER ENAB lt n gt 1024 STAT OPER PTR NTR lt n gt STAT OPER ENAB STAT OPER PTR NTR STAT OPER EVEN Series N8700 User s Guide 75 5 Language Reference The Standard Event group is programmed with Common commands as described later in this section Common commands also control additional status functions such as the Service Request Enable and the Status Byte registers STATus PRESet This command sets all defined bits in the Operation and Questionable PTR registers The command clears all defined bits in the Operation and Questionable NTR and Enable registers STATus OPERation EVENt This query returns the value of the Operation Event register The Event register is a read only register which stores latches all events that are passed by the Operation NTR and or PTR filter Reading the Operation Event register clears it The bit configuration of the Operation status registers is as follows Bit Position 15 11 10 9 8 7 6 5 4 0 Bit Value 1024 256 32 Bit Name CC CV WTG CC The output is in constant current CV The output is in constant voltage WTG The unit is waiting for a transient trigger STATus OPERation CONDition Th
5. Host Name Used whe Emil A N8741A H6612 A N8741A H 612 SPN Agilent N8741A US24H6612A LAN Keepalive Timeout 1800 Enabled fi 800 M Enable seconds GPIB Address 5 Front Panel Only Feature Enter New Confirm New Change Password Enter Old The configurable LAN parameters are described as follows This parameter configures the addressing of the instrument Auto automatically configures the addressing When selected the instrument first tries to obtain an IP address from a DHCP server If a DHCP server is found the DHCP server assigns an IP address Subnet Mask and Default Gateway to the instrument If a DHCP server is unavailable the instrument tries to obtain an IP address using AutolP AutolP automatically assigns an IP address Subnet Mask and Default Gateway addresses on networks that do not have a DHCP server Manual allows you to manually configure the addressing of the instrument by entering values in the following three fields 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 Series N8700 User s Guide Operating the Power Supply Remotely 4 Subnet Mask This value is used to enable the instrument to determine if a client IP address is on the
6. Local Sensing Series N8700 User s Guide Local and remote sense connections are made at the J2 connector The connector has a removable plug that makes it easy for you to make your wire connections Refer to the following figure for the terminal assignments 1 Remote sense 2 Local sense 3 Not connected 4 Local sense 5 Remote sense The J2 connector plug specifications are as follows Plug Type MC 1 5 5 ST 3 81 Phoenix Wire Size AWG 28 to AWG 16 Stripping Length 0 28 in 7 mm Torque 1 95 2 21 in Ib 0 22 0 25 Nm The power supply is shipped with the rear panel J2 sense connector wired for local sensing of the output voltage With local sensing the output voltage regulation is made at the output terminals This method does not compensate for voltage drop on the load wires therefore it is recommended only for low load current applications or where the load regulation is less critical The following figure illustrates the internal connections of the J2 connector Load lines twisted pair shortest length possible Local sense Local sense Rem sense 27 2 28 Installation If the power supply is operated without the local sense jumpers or without the remote sense lines connected it will continue to work but the output voltage regulation will be degraded Also the OVP circuit may activate and shut down the power supply Note that the internal wiring between V and loca
7. Description Qty Material Image Fan pcb insulator clear qty 1 LEXAN FR60 Airflow deflector clear qty 1 LEXAN FR60 FET dust shield clear qty 2 LEXAN FR60 FET diode insulator pink assorted sizes qty varies TC 30 CG Bus bar spacers red black qty 2 VALOX 310 SEO Fan push rivet black qty 12 NYLON 6 PCB standoff white i aty 5 NYLON 6 6 136 Series N8700 User s Guide CAUTION Appendix D Compatibility Differences In General cmvssvrsvrvrvrrrserervereerervereneserversveserverentersrersvsserser 138 Compatibility Command Summary eerrervvvrerrervrvrervesenrversrsesererersesererersesener 139 The Agilent N8700 power supplies are programmatically compatible with the Agilent 603xA power supplies This means that you can remotely program the Agilent N8700 power supplies using the same commands that are used to program the 603xA power supplies Do not mix Compatibility with SCPI commands in the same program This will result in unpredictable instrument behavior Series N8700 User s Guide 137 Appendix D Compatibility Differences In General 138 Item Queries The following table documents the general differences between the way Compatibility commands work on the Agilent N8700 power supplies and the way they worked on the Agilent 603xA power supplies Diff
8. Specifications Performance Specifications c ccscssescssescsescsessecsssssssscssssssssscsssscsssssssesseees 92 Supplemental Characteristics cccccscsescsessssessssescssesssssssesssssessssssseeeseesees 93 Outline Diagram c cecceccecsessessssesseseessessesesessesseesesaesessesessueeseeaseesenssteateateessees 96 Appendix B Verification and Calibration VeritiCatlON E E E E E T 97 G libr tiomuusesaastossasternsaehernbaashabennde b kebdanbi k sen 126 Appendix C Service Types of Service Available orrvorrororrorororrerrrvorrrrersrrererrersrrersrnenersersnnener 130 Repackaging for SHipMent c cccccecsesesessesesesseseseesseeseeseeseetesneeesneeaeesees 130 Operating Checklist cccecccsessessesesssssssessessessessesscsessesseecestessssesseeseeateaeees 130 Error Messages vunnanan E E T EE 132 Recycling Plastic Components c ccccccsseesesesesessesessssessssessssesssssessseeseeees 136 Appendix D Compatibility Differences In General uruvrserrvrverrevvervrvvervriivniniene 138 Compatibility Command Summary seoverrverrnverroverserersnsersrrerserersarersererserenser 139 Nmde fe PP A E AE A A E 141 Series N8700 User s Guide Series N8700 User s Guide 1 Quick Reference The Agilent N8700 DC Power Supplies At a Glance cesses 8 The Front Panel At a Glance sesesesvrsrserverevrserverersserserereseserversseserserssesrenernnn 10 The Rear Panel At a G
9. 37 3 Operating the Power Supply Locally Turn On Check Out 38 Before Turn On Ensure that the power supply is configured as follows The unit is connected to an appropriate AC source as described in chapter 2 The POWER switch is in the off position Sense connector pins 1 and 2 are jumpered sense connector pins 4 and 5 are jumpered All switches on Connector J2 are in the down position SHOCK HAZARD Be aware that hazardous voltages can be present on the output terminals Do not set the output voltage above 40 VDC during the turn on check out procedure Constant Voltage Check OVP Check 1 Turn the POWER switch on 2 Turn the output on by pressing the OUT ON button The green OUT ON indicator should be illuminated 3 The green CV indicator should also be illuminated If the CC indicator is illuminated rotate the current knob until the CV indicator becomes illuminated 4 Rotate the voltage knob while observing the DC VOLTS display The output voltage should vary while the knob is turned The voltage range is from zero to the maximum rated output for the power supply model 1 Rotate the voltage knob and set the output voltage of the unit to 50 of its full scale rating or 30 volts whichever is lower 2 Press the OVP UVL button once so that the DC AMPS display indicates OUP The DC VOLTS display shows the OVP level 3 Use the voltage knob and set the OVP level of the unit to 75 of i
10. 27 5 mV CV Source Effect 15 mV 15 mV CV Ripple and Noise peak to peak N A ee 120 mV rms N A 25 mV Transient Response Voltage 2 ms 750 mV 750 mV Current Programming amp Readback Minimum Current lout 0 mA 238 mA Measurement Readback lout 102 mA Kl lout 102 mA High Current lout 33 864 A EEE 34 136 A Measurement Readback lout 136 mA lout 136 mA CC Load Effect 34 mA 34 mA CC Source Effect 17 mA 17 mA Test Description N8760A Settings Voltage Programming amp Readback Min Voltage lt 225 mV 136 mA Voltage Programming amp Readback High Voltage 150V 136 mA CV Load Effect Source Effect Ripple and Noise 150V 34A Transient Response 150V from 3 4A to 30 6A Current Programming amp Readback Min Current 136 mA 150V Current Programming amp Readback High Current 34A 150V CC Load Effect Source Effect 34A 150V N8760A Load Requirements Current shunt 0 0102 100A Agilent N3300 Electronic load modules 11 N3305A Fixed Resistor for CV Ripple and Noise 4 40 5 5 kw Series N8700 User s Guide 123 Appendix B Verification and Calibration 124 Test Record Agilent N8761A 300V 17A 5SkW Agilent N8761A Report No Date Description Minimum Specs Results Maximum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV 825 mV Measurement Readback Vout 375 mV Vout 375 mV High Voltage Vout 299 7 V 300 3 V Measurement Readback Vout 450 mV Vout 450 mV CV Load Effect 5
11. 50 Series N8700 User s Guide BNC BNC Differential T p amplifier Electronic load B Electronic load output or resistor or resistor BNC 50 ohm termination input Scope or G rms voltmeter Appendix B Verification and Calibration Constant Voltage Tests A test record for each model is provided in the following section Refer to the appropriate test record for instrument settings for each of the following tests Voltage Programming and Readback Accuracy Test category performance calibration This test verifies that the voltage programming and measurement functions are within specifications 1 Turn off the power supply and connect a DVM directly across the S and S terminals as shown in figure A Do not connect a load 2 Turn on the power supply and program the output voltage to zero and the output current to its maximum programmable value Imax with the load off The CV annunciator should be on and the output current reading should be approximately zero 3 Record the output voltage readings on the digital voltmeter DVM as well as the measurement readback The readings should be within the limits specified in the test record for the model being tested under Voltage Programming and Readback Minimum Voltage Vout 4 Program the output voltage to its full scale rating 5 Record the output voltage readings on the DVM as well as the measurement r
12. J1 Connector Connections WARNING SHOCK HAZARD There is a potential shock hazard at the J1 connector when using a power supply with a rated output greater than 40V Ensure that the load wiring insulation rating is greater than or equal to the maximum output voltage of the power supply External programming and monitoring signal are located on the J1 connector The power supply is shipped with a mating plug that makes it easy for you to make your wire connections It is essential to use this plastic body plug to conform to safety agency requirements If a shield is required for the J1 wires connect the shield to the ground screw located on the power supply chassis Refer to the following figure for the pin assignments A description of the pins is given in chapter 1 Chassis Common Chassis Common Enable IN Current Program Voltage Program Local Analog Voltage Monitor Common S cv cc Enable OUT Shut Off Power Supply OK Parallel Current Monitor Current Prog Return Voltage Prog Return Local Analog State Pins on this side are Pins on this side are isolated referenced to the negative from output terminals and are sense S terminal referenced to chassis ground The mating plug specifications for the J1 connector are as follows Mating Plug AMP part number 745211 2 Wire Size AWG 26 to AWG 22 Extraction tool AMP part number 91232 1 or equivalent Manual pistol grip tool Handle AMP p n 58074 1
13. STATE lt Bool gt lt NRf gt VOLTagef LEVel INITiate IMMediate TRANsient CONTinuous TRANsient MEASure SCALar CURRent DC NOLTage DC OUTPut STATe lt Bool gt PON STATe RST AUTO PROTection CLEar SOURce CURRent LEVel IMMediate AMPLitude lt NRf gt TRIGgered AMPLitude lt NRf gt PROTection STATe lt Bool gt VOLTage LEVel IMMediate AMPLitude lt NRf gt TRIGgered AMPLitude lt NRf gt LIMit LOW lt NRf gt PROTection LEVel lt NRf gt Description Aborts the triggered action Calibrates the output current programming Enters the calibration value Sets the calibration date Advances to the next calibration step Sets the numeric calibration password Enables disables calibration mode Calibrates the output voltage programming Initiates the trigger system Enables disables continuous triggers Returns the measured output current Returns the measured output voltage Enables disables the specified output Programs the Power On State Resets latched protection Sets the output current Sets the triggered output current Enables disables over current protection Sets the output voltage Sets the triggered output voltage Sets the low voltage limit Sets the over voltage protection level 68 Series N8700 User s Guide SCPI Command STATus OPERation EVENt CONDition ENABIe lt NRf gt NTRansition lt NRf gt PTRansition lt
14. The following general safety precautions must be observed during all phases of operation of this instrument Failure to comply with these precautions or with specific warnings or instructions elsewhere in this manual violates safety standards of design manufacture and intended use of the instrument Agilent Technologies assumes no liability for the customer s failure to comply with these requirements General Do not use this product 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 operation instructions Before Applying Power Verify that all safety precautions are taken Make all connections to the unit before applying power Note the instrument s external markings described under Safety Symbols Ground the Instrument This product is a Safety Class I instrument provided with a protective earth terminal To minimize shock hazard the instrument chassis and cover must be connected to an electrical ground The instrument must be connected to the ac power mains through a grounded power cable with the ground wire firmly connected to an electrical ground safety ground at the power outlet Any interruption of the protective grounding conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in personal injury Fuses The instrument contains an internal fuse
15. To send a device clear send the string DCL to the control socket When the power supply has finished performing the device clear it echoes the string DCL back to the control socket 57 4 Operating the Power Supply Remotely 58 Service requests are enabled for control sockets using the Service Request Enable register Once service requests have been enabled the client program listens on the control connection When SRQ goes true the instrument will send the string SRQ nn to the client The nn is the status byte value which the client can use to determine the source of the service request Configuring the LAN Parameters Obtain IP Address IP Address To configure the LAN parameters from the instrument s Web server launch the Web server as previously described and click on the View amp Modify Configuration tab on the left side of the page Then click on the Modify Configuration button on the top of the page The following screen lets you modify the LAN parameters Current Setting New Setting Obtain IP Address FTG Manual Auto Manual LAN Settings Used when IP Address is obtained manually IP Address 169 254 57 0 169 254 57 0 ETT 255 255 0 0 255 255 0 0 o NS Auto C Manual Auto 0 0 0 0 DNS Server Used when DNS is manual DNS Server 0 0 0 0 Naming Service NetBIOS Dynamic DNS M NetBIOS M Dynamic DNS n Naming Service is selected
16. 0 4V or Short On Voltage Current Because this function is edge triggered it may not be triggered by every state change For example after applying AC power the output will not be disabled by the Shut Off function if the Shut Off input is in the shut off state This is because the unit has not detected an on to off signal transition Enable Disable Terminals CAUTION To prevent possible damage to the unit do not connect the Enable or Enable terminals to the positive or negative output terminals Enable Disable terminals are available on the J1 connector to enable or disable the power supply output This function is level triggered Simply connect a switch or relay between J1 pins 1 and 14 This function is activated by SW1 setup switch 9 These pins disable the output when they are opened When the output is disabled the PROT indicator on the front panel will blink To re enable the output after it has shut down you must short the Enable and Enable terminals In Auto Restart mode operation resumes automatically In Safe Start mode the Enable Disable function is latched 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 On Voltage Current Off Up Opened Off ENA Blinking Shorted On Voltage Current Off Series N8700 User s Guide 45 3 Operating the Power Supply Locally 46
17. POWER SUPPLY Power Supply OK Signal The Power Supply OK signal on the J1 connector indicates a fault condition in the power supply J1 pin 16 is a TTL output signal Pins 2 and 3 which are connected internally are the signal common All pins are optically isolated from the power supply output With no fault Power Supply OK is high with a maximum source current of 2mA When a fault occurs Power Supply OK is low with a maximum sink current of 1mA The following faults set this signal low Over voltage protection Enable Disable signal true Over current protection Shut Off signal true Over temperature protection Remote interface failure AC line failure Output turned off Daisy Chained Output Shut down It is possible to configure a multiple power supply system to shut down all the units when a fault condition occurs in one of the units SW1 setup switch 5 must be in the Down position to enable the daisy chain operation Other switches are unaffected by this setting If a fault occurs in one unit its Power Supply OK signal is set low and its display will indicate the fault The other units shut off with their displays indicating SO When the fault condition is cleared all units will recover according to their Safe Start or Auto Restart settings The following figure shows three units daisy chained the same connection method can be used with additional units The Shut Off and Power Supply OK signals are referenced to Chassis Common
18. Rem sense Local sense Local sense Rem sense Sense lines Twisted pair or shielded wires Series N8700 User s Guide Installation 2 If the power supply is operated with remote sensing and either the positive or negative load wire is not connected an internal protection circuit will activate and shut down the power supply To resume operation turn the power supply off connect the open load wire and turn on the power supply Load Considerations Multiple Loads Series N8700 User s Guide The following figure shows multiple loads connected to one power supply Each load should be connected to the power supply s output terminals using separate pairs of wires It is recommended that each pair of wires will be as short as possible and twisted or shielded to minimize noise pick up and radiation The sense wires should be connected to the power supply output terminals or to the load with the most critical load regulation requirement Load lines twisted pair shortest length possible Supply Rem sense Local sense Local sense Rem sense If remotely located distribution terminals are used as shown in the following figure the power supply output terminals should be connected to the remote distribution terminals by a pair of twisted and or shielded wires Connect each load to the distribution terminals separately Remote voltage sensing is recommended under these circumstances Sense either at the remote dis
19. and enter the data CAL DATA lt data gt Exit calibration mode CAL STAT OFF 127 Series N8700 User s Guide Appendix C Service Types of Service Available cccsssessssssssssssessessseesssesssesseesseees 130 Repackaging for Shipment meressrsnssnssesnssssseens 130 Me AE AEE EE 130 Er MESSIER eee 132 Recycling Plastic Components ssmnssrsrsonesorsrrorsvrrrserersrrersrsersesensrserserenens 136 This chapter discusses the procedures involved for returning a failed instrument to Agilent Technologies for service or repair procedure is included for diagnosing specific symptoms 129 Appendix C Service Types of Service Available If your instrument fails during the warranty period Agilent Technologies will replace or repair it free of charge After your warranty expires Agilent Technologies will replace or repair it at a competitive price Contact your nearest Agilent Technologies Service Center They will arrange to have your instrument repaired or replaced Repackaging for Shipment Operating Checklist If the unit is to be shipped to Agilent Technologies for service or repair be sure to Attach a tag to the unit identifying the owner and indicating the required service or repair Include the model number and full serial number Place the unit in its original container with appropriate packaging material for shipping Secure the container with strong tape or metal
20. eeeeecsecsecsessesecseseeeeeseseesseeseseeeeseeseesenseneateateaees 4 WIPE SIZES 0 eeceecsecsseesesseesseeseeseeeceseeeseeseeseeeeteeneeeteateseeeteness 23 Series N8700 User s Guide Manual Updates The following updates have been made to this manual since its publication date 9 28 10 Information about battey charging has been added to page 30 Information about parallel connections has been updated on pages 31 and 32 2 28 11 Text changes have been made to the single phase distribution figure on page 20 and to the Note on page 21 1 11 12 Under Environmental Conditions information about operating humidity has been updated and the LED statement has been removed on page 94 The Regulatory Compliance section has been updated with the latest requirements on page 95 Amrel loads have been added to the equipment list on page 98 Enable IN and Enable OUT names are corrected on pages 14 and 35
21. generating equipment Check OCP setting and load current Poor load regulation Front panel CV LED is on Are sense wires properly connected Connect sense wires according to instructions in chapter 2 Front panel controls are nonfunctional Series N8700 User s Guide 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 131 Appendix C Service Error Messages 132 Displaying the SCPI error queue Error List Error 100 101 102 104 114 203 204 205 206 209 302 351 352 353 354 The entire error queue is read then emptied using the following command SYST ERR The following table documents the various error messages that the power supply supports Device dependent Errors these errors set Standard Event Status register bit 3 No error This is the response to the ERR query when there are no errors Too many channels You have specified more channels than are installed in the mainframe Calibration state is off Calibration is not enabled The instrument will not accept calibration commands Calibration password is incorrect The calibration password is incorrect Bad sequence of calibration commands Calibration commands have not been entered in the proper sequence CAL DATE must be yyyy mm dd The calibration date must be entered in the numeric format yyyy year mm month dd
22. such as an option Expression error An expression program data element related error occurred Math error in expression An expression program data element could not be executed due to a math error Query Errors these errors set Standard Event Status register bit 2 Query Error Generic error query Query INTERRUPTED A condition causing an interrupted query error occurred Query UNTERMINATED A condition causing an unterminated query error occurred Query DEADLOCKED A condition causing a deadlocked query error occurred Query UNTERMINATED after indefinite response A query was received in the same program message after a query indicating an indefinite response was executed Series N8700 User s Guide 135 Appendix C Service Recycling Plastic Components Description Qty Material Front panel slotted aty 1 CYCOLOY C6200 Voltage current knobs aty 2 CYCOLOY C6200 Pushbuttons qty 6 CYCOLOY C6200 Nameplate qty 1 8B35V Controls label qty 1 8010VC Foot qty 4 AR 790 Analog connector cover qty 2 LEXAN 243R 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 The following table identifies the plastic components in your instrument that must be recycled when the instrument is disposed of Image 5 N se
23. 0 8V 0 400A N8754A 0 20V 0 250A N8732A 0 10V 0 330A N8755A 0 30V 0 170A N8733A 0 15V 0 220A N8756A 0 40V 0 125A N8734A 0 20V 0 165A N8757A 0 60V 0 85A N8735A 0 30V 0 110A N8758A 0 80V 0 65A N8736A 0 40V 0 85A N8759A 0 100V 0 50A N8737A 0 60V 0 55A N8760A 0 150V 0 34A N8738A 0 80V 0 42A N8761A 0 300V 0 17A N8739A 0 100V 0 33A N8762A 0 600V 0 8 5A N8740A 0 150V 0 22A N8741A 0 300V 0 11A N8742A 0 600V 0 5 5A Note 1 Minimum output voltage is lt 0 2 of the rated output voltage Note 2 Minimum output current is lt 0 4 of the rated output current 1 Quick Reference The Front Panel At a Glance DC AMPS C C i EG DC VOLTS y NG Vy Cr D ovp Q Q Je P OT FE LIMIT UVL oOCPMS8 OUTON EY EG EE A TY ETS T A ff fy Ti AAAS rN gt fo NN ES SS TS JP 4 a Cae Ca 10 1 VOLTAGE knob 2 VOLTAGE indicator 3 DC VOLTS display 4 DC AMPS display 5 CURRENT indicator 6 CURRENT knob 7 OUT ON indicator 8 OUT ON button 8 7 6 09 9 3 OG OOOO Voltage function Adjusts the outpu
24. 0 0 0 0 0 0 Maximum voltage 8 4 10 5 15 75 21 31 5 42 63 84 105 157 5 315 630 SOURce VOLTage LIMit LOW lt value gt MIN MAX SOURce VOLTage LIMit LOW MIN MAX This command sets the low voltage limit of the output When a low voltage limit has been set the instrument will ignore any programming commands that attempt to set the output voltage below the low voltage limit The RST value Min The range of values that can be programmed for this command is coupled with the immediate voltage level setting The maximum value for the low voltage limit is either the value in the following table or the immediate voltage setting multiplied by 0 95 whichever is lower The minimum setting is the value in the table Model V rating 8v 10V 15V 20V 30V 40V 60V 80V 100V 150V 300V 600V Minimum low limit 0 0 0 0 0 0 0 0 0 0 0 Maximum low limit 1 6 9 5 14 25 19 28 5 38 57 76 95 142 285 570 SOURce VOLTage PROTection LEVel lt value gt MIN MAX SOURce VOLTage PROTection LEVel MIN MAX This command sets the over voltage protection OVP level of the output The values are programmed in volts If the output voltage exceeds the OVP level the output is disabled and OV is set in the Questionable Condition status register The RST value Max The range of values that can be programmed for this command is coupled with the immediate voltage level setting The minimum value for the voltage protection le
25. 75mV 150mV 300mV Voltage 5kW 0 025 15mV 225mV 30mV 45mV 60mV 75mV 1125mV 225mV 450mV Current 3 3kW 0 1 800mA 660mA 440mA 330mA 220mA 170mA 110mA 84mA 66mA 44mA 22mA 11mA Current 5kW 0 1 750mA 510mA 375mA 255mA 195mA 150mA 102mA 51mA 25 5mA Measurement Accuracy Voltage 3 3kW 0 1 8mV 10mV 15mV 20mV 30mV 40mV 60mV 80mV 100mV 150mV 300mV 600mV Voltage 5kW 0 025 25mV 375mV 50mV 75mV 100mV 125mV 187 5mV 375mV 750mV Current 3 3kW 0 1 12A 990mA 660mA 495mA 330mA 255mA 165mA 126mA 99mA 66mA 33mA 16 5mA Current 5SKW 0 1 750mA 510mA 375mA 255mA 195mA 150mA 102mA 51mA 25 5mA Load Transient Recovery Time time for output voltage to recover within 0 5 of its rated output for a load change from 10 to 90 of its rated output current Time 3 3kW Time 5kW Output set point lt ims lt ims lt 1l ms lt I1ims lt Ims From 10 to 100 of rated output lt Ims lt Ims lt Ims lt Ims lt Ims lt Ims lt ims lt 1ims lt 2ms lt 2ms lt Ims lt 1ims lt 2ms lt 2ms lt 2ms lt 2ms NOTE 1 Minimum voltage is guaranteed to a maximum of 0 2 of the rated output voltage Minimum current is guaranteed to a maximum of 0 4 of the rated output current NOTE 2 20MHz NOTE 3 From 5Hz 1MHz 92 Series N8700 User s Guide Specifications Supplemental Characteristics Agilent Models N8731A N8742A and Models N8754A N8762A Appendix A Model 3 3kW N8731A N8
26. A 8 mV Transient Response Voltage 1 ms 200 mV 200 mV Current Programming amp Readback Minimum Current lout 0 mA 510 mA Measurement Readback lout 255 mA lout 255 mA High Current lout 84 745 A 85 255 A Measurement Readback lout 340 mA lout 340 mA CC Load Effect 22 mA 22 mA CC Source Effect 10 5 mA 10 5 mA Test Description N8736A Settings Voltage Programming amp Readback Min Voltage lt 80 mV 340 mA Voltage Programming amp Readback High Voltage 40V 340 mA CV Load Effect Source Effect Ripple and Noise 40V 85A Transient Response 40V from 8 5A to 76 5A Current Programming amp Readback Min Current 720 mA 40V Current Programming amp Readback High Current 85A 40V CC Load Effect Source Effect 85A 40V N8736A Load Requirements Current shunt 0 012 100A Agilent N3300 Electronic load modules 6 N3306A Fixed Resistor for CV Ripple and Noise 0 47Q 3 5 kw Series N8700 User s Guide Verification and Calibration Appendix B Test Record Agilent N8737A 60V 55A 3 3kW Agilent N8737A Description Voltage Programming amp Readback Minimum Voltage Vout Measurement Readback High Voltage Vout Measurement Readback CV Load Effect CV Source Effect CV Ripple and Noise peak to peak rms Transient Response Voltage 1 ms Current Programming amp Readback Minimum Current lout Measurement Readback High Current lout Measurement Readback CC Load Effect CC Source Effect Report No Minimum S
27. NRf gt PRESet QUEStionable EVENt CONDition ENABIe lt NRf gt NTRansition lt NRf gt PTRansition lt NRf gt SYSTem COMMunicate RLSTate LOGal REMote RWLock ERRor VERSion TRIGger SOURce BUS TRANsient IMMediate Language Reference 5 Description Returns the value of the operation event register Returns the value of the operation condition register Enables specific bits in the Event register Sets the Negative transition filter Sets the Positive transition filter Presets all enable and transition registers to power on Returns the value of the questionable event register Returns the value of the questionable condition register Enables specific bits in the Event register Sets the Negative transition filter Sets the Positive transition filter Specifies the Remote Local state of the instrument Returns the error number and error string Returns the SCPI version number Sets the measurement trigger source Generates a transient trigger Common Commands Series N8700 User s Guide Command CLS ESE lt NRf gt ESE ESR IDN OPC OPC OPT RCL lt NRf gt RST SAV lt NRf gt SRE lt NRf gt SRE STB TRG TST WAI Description Clear status Standard event status enable Return standard event status enable Return event status register Return instrument identification Enable operation complete bit in ESR Return a 1 when operation c
28. Visual C 6 0 Microsoft Excel The CD also contains IVI COM and LabVIEW drivers for your power supply Series N8700 User s Guide 85 6 Programming Examples Output Programming Example This program sets the voltage current over voltage and the over current protection It turns the output on and takes a voltage measurement When done the program checks for instrument errors and gives a message if there is an error Sub main EZ Dim IDN As String Dim IOaddress As String Dim ErrString As String 1 p his variable controls the voltage Dim VoltSetting As Double This variable measures the voltage Dim measVolt As Double rm his variable controls the current Dim CurrSetting As Double These variables control the over voltage protection settings Dim overVoltSetting As Double 1 p hese variables control the over current protection Dim overCurrOn As Long These variable are neccessary to initialize the VISA COM Dim ioMgr As AgilentRMLib SRMC1s Dim Instrument As VisaComLib FormattedI0488 The following command line provides the program with the VISA name of the interface that it will communicate with It is currently set to use GPIB IOaddress GPIBO 5 INSTR Use the following line for LAN communication TOaddress TCPIP0 141 25 36 214 Use the following line instead for USB communication IOaddress USB0 2391 1799 N8741A US00000002 Initialize the VISA COM communi
29. bands If the original shipping container is not available place your unit ina container that will ensure at least 4 inches of compressible packaging material around all sides for the instrument Use static free packaging materials to avoid additional damage to your unit Agilent Technologies suggests that you always insure shipments If the power supply appears to be operating improperly use the following procedures to determine whether the power supply load or external circuits are the cause Turn on check out procedure Turn off the unit and remove all external connections to the instrument Follow the turn on checkout procedure in chapter 2 Trouble shooting guide 130 If you have encountered problems during the checkout procedure use the following guide to diagnose a specific symptom If the action does not remedy the problem return the unit for service Series N8700 User s Guide Symptom No output All displays and indicators are blank Check Is the AC power cord defective Is the AG input voltage within range Service Appendix C Action Check continuity Replace if necessary Check AC input voltage Connect to appropriate voltage source Output is present momentarily but shuts off quickly Display indicates AC Does the AC source voltage sag when a load is applied Check AC input voltage Connect to appropriate voltage source Output is present momentarily but shuts off quickly
30. date Compatibility function not implemented The requested compatibility function is not available NVRAM checksum error A checksum error has occurred in the instrument s nonvolatile random access memory NVRAM full The nonvolatile random access memory of the instrument is full File not found The internal calibration file or the internal channel attribute file was not found in NVRAM Output communications failure A hardware failure has occurred on the power supply Option not installed The option that is programmed by this command is not installed VOLT setting conflicts with VOLT PROT setting Attempted to program the voltage above the over voltage protection setting VOLT PROT setting conflicts with VOLT setting 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 100 101 102 103 104 105 108 109 110 111 112 113 114 120 121 123 124 128 130 131 134 138 140 Service Appendix C Command Errors these errors set Standard Event Status register bit 5 Command error Generic syntax error Invalid character An invalid
31. from the load to ground it is recommended to ground the output terminal as close as possible to the power supply chassis ground WARNING SHOCK HAZARD For models up to 60 VDC rated output no point on the output shall be more than 60 VDC above or below chassis ground For models greater than 60 VDC rated output no point on the Positive output shall be more than 600 VDC above or below chassis ground For models greater than 60 VDC rated output no point on the Negative output shall be more than 400 VDC above or below chassis ground Parallel Connections CAUTION Only power supplies that have identical voltage and current ratings can be connected in parallel Up to four units of the same voltage and current rating can be connected in parallel to provide up to four times the output current capability Refer to the following figures for typical connections of parallel power supplies using either local or remote sensing The figures show two units however the same connection method applies for up to four units S LS As short as possible MASTER POWER SUPPLY Twisted pair J1 25 Parallel Common Curr Prog Curr Prog Rtn J1 8 J1 12 J1 10 SLAVE POWER SUPPLY S LS LS S Local Sensing Series N8700 User s Guide 31 2 32 Installation Twisted pair As short as possible MASTER POWER SUPPLY J1 25 Parallel Common Curr Prog Curr Prog Rtn J1 8 J1 12 J1 10 SLAVE POWER S
32. input cover Analog connector Shield assembly Hardware Documentation Set Certificate of Calibration Automation Ready CD ROM Item N5740A A power cord appropriate for your location Units are supplied with unterminated power cords A strain relief assembly for unterminated power cords A cover for the AC input on which the strain relief assembly is mounted A DB25 subminiature connector plug for analog control connections A safety shield appropriate for the output terminal connections either wire clamp or bus bar Nuts washers and bolts for connecting load leads to output bus bars only used for 8V to 100V units Contains User s Guide with Product Reference CD ROM A certificate of calibration referenced to the serial number E2094N contains Agilent I0 Libraries Suite Description Rack mount slide kit for installing in system II cabinets 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 Agilent Sales and Service Office immediately Refer to Appendix C for more information Until you have checked out the power supply save the shipping carton and packing materials in case the unit has to be returned Series N8700 User s Guide Installing the Unit Installation 2 Safety Considerations Environment This power supply is a Safety Class I instrument which means it has a prote
33. 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 Installation 2 Setting the Over Voltage Protection The master unit OVP should be programmed to the desired OVP level The OVP of the slave units should be programmed to a HIGHER value than the master When the master unit shuts down it programs the slave unit to zero output voltage If a slave unit shuts down when its OVP is set lower than the master output voltage only that unit shuts down and the remaining slave units will supply the entire load current Setting the Over Current Protection Series Connections Over current protection if desired may only be used with the MASTER unit When the master unit shuts down it programs the slave units to zero output voltage SHOCK HAZARD For models up to 60 VDC rated output no point on the output shall be more than 60 VDC above or below chassis ground For models greater than 60 VDC rated output no point on the Positive output shall be more than 600 VDC above or below chassis ground For models greater than 60 VDC rated output no point on the Negative output shall be more than 400 VDC above or below chassis ground CAUTION Only power supplies that have identical voltage and current ratings can be connected in series Series N8700 User s Guide Two units of the same voltage and current rating can be connected in series to
34. m 5 AN IANS Uc Q T T 5 SA fr ocas R oon Q I gt a am E E I I I I I I I I I I I I I I gt o OU VO 00 a 482 0 1 0mm 423 0 1 0mm Cel s y SS ee E SSR Jo EEE E SF o FIRE o EER o ce ee ee m Fam SEE seen gl Oe Seenen 9 Ba Stow 19583830 E Celt e o BSS SEESEE Poe oS E o O 497 5mm 150V to 600V models E amp amp j E m A A o I 9 E E Ll S 92 0mm 2 p 442 5 1 0mm Bus Bar Detail Output Cover Detail 8V to 100V Models 8V to 100V Models E E o 00 108 0mm NOTES Holes marked A are for chassis slide mounting Use only screws designated 10 32x0 38 maximum 96 Series N8700 User s Guide 00 ee Appendix B oe Oe Verification and Calibration e e e LJ 0 Verification GE 97 e ETG 126 The verification procedures described in this appendix verify that the power supply is operating normally and is within published specifications This appendix also includes calibration procedures for the Agilent 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 supply passes the verification tests the unit is operating within its calibration limits and does not need to be re calibrated The recommended calibration interval for Agilent N8700 power supplies is one year Verificatio
35. m OD A gt lt rm GS aD CC H LLLI 886988 OD ae CRED I ED AD RESI ar O 1 AC input connector 2 DC output connector 3 Analog programming connector 4 SW1 setup switch 5 Remote Sense connector 6 GPIB connector 7 LAN connector 8 USB connector 9 Ground screw amp nut 8V 100V bus bar Header with mating plug in connector for both the 3 3 kW and 5 kW output models A 3 conductor plug is provided for single phase VAC A 4 conductor plug is provided for 3 phase VAC Wire clamp connector is used for 150V 300V and 600V models Bus bars are used for 8V to 100V models Connector for the analog interface Includes output voltage and current limit programming and monitoring signals Shut Off control electrical signal Enable Disable control dry contact power supply ok Power Supply OK signal and operation mode CV CC signal See next page for details Nine position switch for selecting remote programming and monitoring modes for Output Voltage Current Limit and other control functions See next page for details Connector for making remote sensing connections for regulating the load voltage and compensating for wiring voltage drop See next page for details Connector for connecting to a GPIB interface See chapter 4 for setup Connector for connecting to a LAN interface LINK LED indicates link integr
36. mV CV Ripple and Noise peak to peak N A 60 mV rms N A 8 mV Transient Response Voltage 1 ms 50 mV 50 mV Current Programming amp Readback Minimum Current lout 0 mA 1 98 A Measurement Readback lout 990 mA lout 990 mA High Current lout 329 01 A 330 99 A Measurement Readback lout 1 32 A lout 1 32 A CC Load Effect 71 mA 71 mA CC Source Effect 35 mA 35 mA Test Description N8732A Settings Voltage Programming amp Readback Min Voltage lt 20 mV 1 32A Voltage Programming amp Readback High Voltage 10V 1 32A CV Load Effect Source Effect Ripple and Noise 10V 330A Transient Response 10V from 33A to 297A Current Programming amp Readback Min Current 1 32A 10V Current Programming amp Readback High Current 330A 10V CC Load Effect Source Effect 330A 10V N8732A Load Requirements Current shunt 0 0005Q 500 A Agilent N3300 Electronic load modules 6 N3306A Fixed Resistor for CV Ripple and Noise 0 03Q 3 5 kW Series N8700 User s Guide Verification and Calibration Appendix B Test Record Agilent N8733A 15V 220A 3 3kW Agilent N8733A Report No Date Description Minimum Specs Results Maximum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV 37 5 mV Measurement Readback Vout 15 mV Vout 15 mV High Voltage Vout 14 985 V 15 015 V Measurement Readback Vout 30 mV Vout 30 mV CV Load Effect 7 3 mV 7 3 mV CV Source Effect 3 5 mV 3 5 mV CV Ripple and Noise peak t
37. operate the power supply from the front panel and from the analog connector on the rear panel It also includes a turn on check out procedure to verify the unit is operating properly Operating the Power Supply Remotely Chapter 4 describes how to configure the remote interfaces It also gives a brief overview of the SCPI command structure and basic programming concepts Language Reference Chapter 5 describes all of the SCPI programming commands Programming Examples Chapter 6 provides Visual BASIC example programs that illustrate some common applications Specifications Appendix A describes specifications and supplemental characteristics Verification and Calibration Procedures Appendix B explains the verification and calibration procedures Service Appendix C describes what to do if your unit requires service Compatibility Appendix D documents the compatibility commands of the Agilent 603xA power supplies that are supported by the Agilent N8700 power supplies You can contact Agilent Technologies at one of the following telephone numbers for warranty service or technical support information 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 Agilent in your country or specific location www agilent com find assist Or contact your Agilent Technologies Representative The web contains the most up to date v
38. output current to its full scale rating Divide the voltage drop DVM reading across the current shunt by its resistance to convert to amps and record this value Tout Also record the current measurement readback The readings should be within the limits specified in the test record for the appropriate model under Current Programming and Readback High Current Iout CC Load Effect Test category performance This test measures the change in output current resulting from a change in output voltage from full scale to short circuit 1 Turn off the power supply and connect the current shunt DVM and electronic load as shown in figure B Connect the DVM directly across the current shunt To ensure that the values read during this test are not the instantaneous measurement of the AC peaks of the output current ripple several DC measurements should be made and averaged If you are using an Agilent 3458A you can set up the voltmeter to do this automatically From the instrument s front panel program 100 power line cycles per measurement Press NPLC 100 ENTER Turn on the power supply and program the output current to its full scale value and the output voltage to its maximum programmable value Vmax 103 Appendix B Verification and Calibration 4 With the electronic load in CV mode set it for the output s full scale voltage The CC annunciator on the front panel must be on If it is not adjust the load so that the volt
39. peak N A 300 mV rms N A g r 100 mV Transient Response Voltage 2 ms 1 5V 1 5V Current Programming amp Readback Minimum Current lout 0 mA 66 mA Measurement Readback lout 33 mA medie lout 33 mA High Current lout 10 967 A a 11 033 A Measurement Readback lout 44 mA lout 44 mA CC Load Effect 7 2 mA 7 2 mA CC Source Effect 3 1 mA 3 1 mA Test Description N8741A Settings Voltage Programming amp Readback Min Voltage lt 600 mV 44 mA Voltage Programming amp Readback High Voltage 300V 44 mA CV Load Effect Source Effect Ripple and Noise 300V 11A Transient Response 200V from 1 1A to 9 9A Current Programming amp Readback Min Current 44 mA 300V Current Programming amp Readback High Current 11A 300V CC Load Effect Source Effect 11A 300V N8741A Load Requirements Current shunt 0 1Q 15 A Use fixed resistor instead of load modules 27 3Q 3 5 kW or Amrel 5KW 600V 300A electronic load Fixed Resistor for CV Ripple and Noise 27 3Q 3 5 kW Series N8700 User s Guide 115 Appendix B Verification and Calibration 116 Test Record Agilent N8742A 600V 5 5A 3 3kW Agilent N8742A Report No Date Description Minimum Specs Results Maximum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV 1 5V Measurement Readback Vout 600 mV Vout 600 mV High Voltage Vout 599 4 V 600 6 V Measurement Readback Vout 1 2 V Vout 1 2 V CV Load Effect 95 mV 95 m
40. returns the trigger system to the IDLE state unless INIT CONT is enabled It also resets the WTG bit in the Status Operation Condition register ABORt is executed at power on and upon execution of RST INITiate IMMediate TRANsient This command controls the enabling of output triggers When a trigger is enabled a trigger causes the specified triggering action to occur If the trigger system is not enabled all triggers are ignored INITiate CONTinuous TRANsient ON OFF INITiate CONTinuous TRANsient This command continuously initiates output triggers The enabled state is On 1 the disabled state is Off 0 When disabled the trigger system must be initiated for each trigger with the INITiate command TRIGger TRANsient IMMediate If the trigger system has been initiated this command generates an immediate output trigger When sent the output trigger will Initiate an output change as specified by the CURR TRIG or VOLT TRIG settings Clear the WTG bits in the Status Operation Condition register after the trigger action has completed TRIGger SOURce BUS TRIGger SOURce This command selects the trigger source for the output trigger system 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 lt GET gt command Series N8700 User s Guide 83 090 ee 6 0
41. the J1 connector to enable or disable the power supply output This function is edge triggered J1 pin 15 is the Shut Off input and pins 2 and 3 which are connected internally are the signal common All pins are optically isolated from the power supply output The Shut Off input accepts a 2 5V to 15V signal or an open short contact to enable or disable the output The Shut Off control logic is selected by SW1 setup switch 5 When an on to off transition is detected at the Shut Off input the 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 Operating the Power Supply Locally 3 To re enable the output after it has shut down you must disable the Shut Off signal In Auto Restart mode operation resumes automatically In Safe Start mode the Shut Off function is latched You must also press the OUT ON button or send an OUTPut PROTection CLEar command to resume operation The Shut Off function can be used to shut down multiple power supplies in a daisy chain fashion as explained later in this chapter It can also be used to reset the OVP and OCP as previously described SW1 switch 5 SO Signal Level Output Display Down default 2 15V or Open On Voltage Current 0 0 4V or Short Off SO Up 2 15V or Open Off SO 0
42. to peak N A er 100 mV rms N A g r 25 mV Transient Response Voltage 1 ms 500 mV 500 mV Current Programming amp Readback Minimum Current lout 0 mA 198 mA Measurement Readback lout 99 mA Kl lout 99 mA High Current lout 32 901 A EEE 33 099 A Measurement Readback lout 132 mA lout 132 mA CC Load Effect 11 6 mA 11 6 mA CC Source Effect 5 3 mA 5 3 mA Test Description N8739A Settings Voltage Programming amp Readback Min Voltage 200 mV 132 mA Voltage Programming amp Readback High Voltage 100V 132 mA CV Load Effect Source Effect Ripple and Noise 100V 33A Transient Response 100V from 3 3A to 29 7A Current Programming amp Readback Min Current 132 mA 100V Current Programming amp Readback High Current 33A 100V CC Load Effect Source Effect 33A 100V N8739A Load Requirements Current shunt 0 0102 100A Agilent N3300 Electronic load modules 7 N3305A Fixed Resistor for CV Ripple and Noise 3 00 3 5 kW Series N8700 User s Guide 113 Appendix B Verification and Calibration 114 Test Record Agilent N8740A 150V 22A 3 3kW Agilent N8740A Report No Date Description Minimum Specs Results Maximum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV 375 mV Measurement Readback Vout 150 mV Vout 150 mV High Voltage Vout 149 85 V 150 15 V Measurement Readback Vout 300 mV Vout 300 mV CV Load Effect 27 5 mV 27 5 mV CV Source Effect 17 mV 17 mV CV Ri
43. transformer 2 Connect a DVM and an electronic load as shown in figure A Set the variable voltage transformer to nominal line voltage 3 Turn on the power supply and program the output current to its maximum programmable value Imax and the output voltage to its full scale value 4 Set the electronic load for the output s full scale current The CV annunciator on the front panel must be on If it is not adjust the load so that the output current drops slightly 5 Adjust the transformer to the low line voltage 170 VAC for 200 nominal line 342 VAC for 400 nominal line 6 Record the output voltage reading from the DVM 7 Adjust the transformer to the high line voltage 265 VAC for 200 nominal line 460 VAC for 400 nominal line 8 Record the output voltage reading on the DVM The difference between the DVM reading in steps 6 and 8 is the source effect which should not exceed the value listed in the test record for the appropriate model under CV Source Effect CV Noise Test category performance Periodic and random deviations in the output combine to produce a residual AC voltage superimposed on the DC output voltage This residual voltage is specified as the rms or peak to peak output voltage in the frequency range specified in Appendix A 1 Turn off the power supply and connect the load resistor differential amplifier and an oscilloscope ac coupled to the output as shown in figure C Use the indicated load resistor fo
44. transition of that bit at the Questionable Condition register sets the corresponding bit in the Questionable Event register Ifthe same bits in both NTR and PTR registers are set to 0 then no transition of that bit at the Questionable Condition register can set the corresponding bit in the Questionable Event register The Preset values are NTR 0 PTR 32767 This command causes the following actions on the status system 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 lt NL gt then the output queue and the MAV bit are also cleared Series N8700 User s Guide ESE ESE ESR OPC OPC Series N8700 User s Guide Language Reference 5 This command programs the Standard Event Status Enable register bits The programming determines which events of the Standard Event Status Event register see ESR are allowed to set the ESB Event Summary Bit of the Status Byte register A 1 in the bit position enables the corresponding event All of the enabled events of the Standard Event Status Event Register are logically OR ed to cause the Event Summary Bit ESB of the Status Byte Register to be set The query reads the Standard Event The query reads the Standard Event Status Enable register The bit configuration of the Standard Event register is as follows Bit
45. utility if you cannot configure the LAN interface as previously described in this section 1 Connect your power supply to your computer using either the USB interface or the GPIB interface as previously described 2 Install the Setup utility on your computer Run the Setup utility by clicking Start Programs Agilent N8700 Setup Utility 3 Configure the following LAN address parameters These are located under the Settings tab For a description of these parameters refer to the previous section LAN Setup Utility for Agilent Technologies N37xxA Settings LAN Status Connections Model About IP IP Address 169 254 57 0 ee C Auto Subnet Mask 255 255 0 0 ae G Default Gateway 0 0 0 0 Manual DNS 130 30 136 Name IV Use Dynamic DNS Naming Service HostName A N8772A D3905 IV Use NetBIOS Naming Service Domain Domain Name usa agilent com TCP Keep AliveTimeout 1800 IV Enable TCP Keep Alive Enable IV Enable WEB Server IV Enable LAN Series N8700 User s Guide Series N8700 User s Guide Operating the Power Supply Remotely 4 4 Enable the LAN and optionally the built in Web server using the applicable check boxes 5 Click the Set button to save all the settings information 6 Connect the LAN cable to your instrument and computer Reboot the instrument Wait for the instrument to configure the new LAN settings 7 View the LAN settings by click
46. 0 Vac 50 60Hz 400 Vac Models 380 415 Vac 50 60Hz ALL Models 23 24A Max 100 load 200 Vac Models 13 6 14 54 Max 100 load 400 Vac Models 6 8 7 2A Max 100 load 200 Vac Models 21 22A Max 100 load 400 Vac Models 10 5 12A Max 100 load 170 265 Vac 47 63 Hz 170 265 Vac 47 63 Hz 342 460 Vac 47 63 Hz 4000 VA 5800 VA Single phase models 0 99 at nominal input and rated output power 3 phase models 0 95 at nominal input and rated output power 3 phase models 0 94 at nominal input and rated output power 82 88 83 88 lt 50A lt 50A lt 20A Series N8700 User s Guide 95 Appendix A Specifications Outline Diagram E E T gt gt ETE Doms CREM CD Q
47. 0 mV 50 mV CV Source Effect 30 mV 30 mV CV Ripple and Noise peak to peak N A 300 mV rms N A 60 mV Transient Response Voltage 2 ms 1 5V 1 5V Current Programming amp Readback Minimum Current lout 0 mA 119 mA Measurement Readback lout 51 mA lout 51 mA High Current lout 16 932 A 17 068 A Measurement Readback lout 68 mA lout 68 mA CC Load Effect 17 mA 17 mA CC Source Effect 8 5 mA 8 5 mA Test Description N8761A Settings Voltage Programming amp Readback Min Voltage lt 450 mV 68 mA Voltage Programming amp Readback High Voltage 300V 68 mA CV Load Effect Source Effect Ripple and Noise 300V 17A Transient Response 200V from 1 7A to 15 3A Current Programming amp Readback Min Current 68 mA 300V Current Programming amp Readback High Current 17A 300V CC Load Effect Source Effect 17A 300V N8761A Load Requirements Current shunt 0 1Q15A Use fixed resistor instead of load modules 17 6Q 5 5 kW or Amrel 5KW 600V 300A electronic load Fixed Resistor for CV Ripple and Noise 17 6Q 5 5 kw Series N8700 User s Guide Verification and Calibration Appendix B Test Record Agilent N8762A 600V 8 5A 5kW Agilent N8762A Report No Date Description Minimum Specs Results Maximum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV 1 65 V Measurement Readback Vout 750 mV Vout 750 mV High Voltage Vout 599 4 V 600 6 V Measurement Readback Vout 900 mV Vout 900 mV CV Load Eff
48. 0V 100V 150V 300V 600V Voltage 5kW 20V 30V 40V 60V 80V 100V 150V 300V 600V Current 3 3kW 400A 330A 220A 165A 110A 85A 55A 42A 33A 22A 11A 5 5A Current 5kW 250A 170A 125A 85A 65A 50A 34A 17A 8 5A Power 3 3kW 3 2KW 3 3kW 3 3kW 3 3kW 33kW 34kW 33KW 336kW 3 3kW 3 3KW 33KW 3 3kW Power 5kW 5kW S1kW 5kW 51kW 52KW 5kW 51kW S1kW 5 1kW Output Ripple and Noise CV p p NOTE2 3 3kW 60mV 60mV 60mV 60mV 60mV 60mV 60mV 80mV 100mV 100mV 300mV 500mV CV p p NOTE2 5kW 75mV 75mV 75mV 75mV 100mV 100mV 120mV 300mV 500mV CV rms NOTE3 3 3kW 8mV 8mV 8mV 8mV 8mV 8mV 8mV 25mV 25mV 25mV 100mV 120mV CV rms NOTES 5kW 10mV 10mV 10mV 10mV 15mV 15mV 25mV 60mV 120mV Load Effect change from 10 to 90 of full load Voltage 3 3kW 6 2mV 6 5mV 7 3mV 8mV 95mV 11mV 14mV 17mV 20mV 275mV 50mV 95mV Voltage 5kW 8mV 95mV 11mV 14mV 17mV 20mV 275mV 50mV 95mV Current 3 3kW 85mA 71mA 49mA 38mA 27mA 22mA 16mA 13 4mA 116mA 94mA 72mA 6 1mA Current 5kW 250mA 170mA 125mA 85mA 65mA 50mA 34mA 17mA 8 5mA Source Effect change from 170 265 Vac for 200 Vac models or 342 460 Vac for 400 Vac models with constant load Voltage 3 3kW 2 8mV 3mV 3 5mV 4mV 5mV 6mV 8mV 10mV 12mV 17mV 32mV 62mV Voltage 5kW 2mV 3mV 4mV 6mV 8mV 10mV 15mV 30mV 60mV Current 3 3kW 42mA 35mA 24mA 185mA 13mA 105mA 75mA 62mA 53mA 42mA 31mA 2 6mA Current 5kW 125mA 85mA 625mA 42 5mA 325mA 25mA 17mA 85mA 4 3mA Programming Accuracy NOTE 1 Voltage 3 3kW 0 05 4mV 5mV 75mV 10mV 15mV 20mV 30mV 40mV 50mV
49. 1 pin 8 and J1 pin 12 see following figure Connect the programming source to the mating plug of J1 as shown in the following figure Observe the correct polarity for the voltage source Set the programming sources to the desired levels and turn the power supply on Adjust the programming sources to change the power supply output The analog control circuits let you set the output voltage and current limit up to 5 over the model rated maximum value The power supply will operate within the extended range however it is not recommended to operate the power supply over its voltage and current rating and performance in this region is not guaranteed SW1 switch 3 Voltage Programming Current Programming J1 pin 9 J1 pin 10 Down default 0 5V 0 5V Up 0 10V 0 10V Series N8700 User s Guide Operating the Power Supply Locally 3 Resistance Programming of Output Voltage and Current Resistances of 0 5 KQ or 0 10 kQ can be selected to program the output voltage and current limit from zero to full scale Internal current sources supply a 1 mA current through the external resistors The voltage drop across the resistors is used as the programming voltage for the power supply To maintain the temperature stability specification of the power supply only use resistors that are stable and low noise with a temperature coefficient less than 50 ppm Set the power supply to resistance programming as follows 1 Make sure that the power
50. 16 or PC 6 3 STF 10 16 Phoenix Wire Size AWG 18 to AWG 8 Stripping Length 12 mm 0 5 in Torque 10 7 13 4 in Ib 1 2 1 5 Nm 5 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 22 Series N8700 User s Guide Connecting the Load Installation 2 SHOCK HAZARD Turn off AC power before making rear panel connections Wires and straps must be properly connected and screws securely tightened Wire Size The following factors should be considered when selecting wiring to connect the load to the power supply Current carrying capacity of the wire Insulation rating of the wire should be at least equivalent to the maximum output voltage of the power supply Load wire voltage drop Noise and impedance effects of the load wiring FIRE HAZARD To satisfy safety requirements load wires must be large enough not to overheat when carrying the maximum short circuit current of the power supply If there is more than one load then any pair of load wires must be capable of safely carrying the full rated current of the supply Paralleled load wires may be required for larger ampacity power supplies The following table lists the characteristics of AWG American Wire Gauge copper wire
51. 2 0 e Oe Programming Examples e e e Output Programming Example ccccscsscsssessesscseseesesseeseesseseseeseestetenesnees 86 Trigger Programming Example cecccecsssesessesesecesseseeesesseseesestesesteaeetaneatees 88 This chapter contains several example programs to help you develop programs for your own application The example programs are for illustration only and are provided with the assumption that you are familiar with the programming language being demonstrated and the tools used to create and debug procedures See Chapter 5 Language Dictionary for the SCPI command syntax 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 Agilent Technologies has no warranty obligations or liability for any example programs The example programs are written in Microsoft Visual Basic 6 0 using the VISA COM IO library The VISA COM library must be downloaded from the Automation Ready CD ROM to use these programs For information about using VISA COM in another Visual Basic project refer to Programming Your Instruments in the USB LAN GPIB Interfaces Connectivity Guide also included on the Automation Ready CD ROM Example programs for the following programming environments are also included on the Product Reference CD ROM located at the back of this guide Microsoft Visual Basic 6 0 Microsoft
52. 30 H history 2 Hostnameraa sees aa e E a ecard cents RTA 59 l impedance effects osmnvrvrnvrvrvvrvrrverrrverrrverrererseverrvrrser 30 inductive loads initiate commands NE eeeee ee ele ees oes 83 INIT CONT ounce ceceec ces cesseessessesseessesseeseestesreseeseereenees 83 INS P CEION ien 16 0 EE en 52 IP Address nonnenrrorvorverververversersensrssrsersersersenserserersensersessnn 58 items supplied rnrerrrrvrrorerrvverreverreverreverseverseversevere venner 16 142 Ji connectie sasn 12 J2 CONNECtOF icscorvrrrrrerevererrerereveverrereseveverseseseesereseveversenene 12 Ke palive Laine Aae 59 KEyWOVA S ninnan naan 63 setup utility SOCKETS 0 ccceceessesesceteeseees LAN private cece LANSE load WINING eisicsitesteeivccstecceitets eee eee local voltage sensing lock front panel ou cesssccsesesseseesssecsesecsssecseseesesecseseeseaeeees magnetic feld Sisan 17 master Unit ee keneen aiae in aeia aaa EEEa Era 32 measure commandS wsoronorrrerorererrverererernrvererersnneverer 71 MEAS CURR irnrernvverererserersererserersererseresseversererseversevenee 71 MEAS VOLT iiinis an 71 message terminator omensrnsersersrvorververversersersersersrrsnnen end OF identify eosnorvrvrerrvrerrorerrererrrrerreserreversrsererser NEWlINE i isa model numbers 00 model ratings ssrrsorsrvr000n multiple load connections multipliers iiia N nu
53. 32 x 3 8 in max screws on each side To prevent internal damage use the specified screw length only WARNING SHOCK HAZARD To prevent electric shock unplug the unit before cleaning Use a dry cloth or one slightly dampened with water to clean the external case parts Do not attempt to clean internally Series N8700 User s Guide Installation 2 Connecting the Line Cord WARNING SHOCK HAZARD The power cable provides a chassis ground through the ground conductor Be certain that the power cable has the ground conductor connected to earth ground at the source and instrument AC input connector FIRE HAZARD Use only the power cable that was supplied with your instrument Using other types of power cables may cause overheating of the power cable and result in fire CONNECTION TO AC SOURCE The power supply must be connected to the WARNING AC mains through a protective device such as a circuit breaker or fuse with ratings as follows For single phase models 30A maximum per phase For 3 phase models 20A maximum per phase CAUTION Connection of either a 3 3 kW or 5 kW power supply to an AC power source must be made by a qualified electrician in accordance with local electrical codes The POWER on off switch is not the main disconnect device and does not completely disconnect all circuits from the AC source A disconnect device either a switch or circuit breaker for permanent or multi phase configurations must b
54. 732A N8733A N8734A N8735A N8736A N8737A N8738A N8739A N8740A N8741A N8742A 5kW 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 0 08s 0 08s 0 08s 0 08s 0 08s 0 08s 0 15s 0 15s 0 15s 0 15s 0 15s 0 25s Up full load 5kW 0 03s 0 03s 0 03s 0 05s 0 05s 0 05s 0 05s 0 05s 0 1s Down full load 3 3kW 0 02s 0 15 0 15 0 15 0 165 0 165 0 165 0 35 0 35 0 35 0 35 0 55 Down full load 5kW 0 055 0 08s 0 08s 0 08s 0 1s 0 1s 0 1s 0 1s 0 2s Down no load 3 3kW 0 5s 0 6s 0 7s 0 8s 0 9s 1 0s 1 1s 1 2s 1 5s 2 0s 3 5s 4 05 Down no load 5kW 0 75 0 85 0 95 1 05 1 25 1 55 2 05 2 55 3 05 Command Response Time add this to the output response time to obtain the total programming time 100 ms Remote Sense Compensation the load lead drop reduces the maximum available voltage at the load Volts load lead 3 3kW 2V 2V 2V 2V 5V 5V 5V 5V 5V 5V 5V 5V Volts load lead 5kW 2V 5V 5V 5V 5V 5V 5V 5V 5V Over voltage Protection Range 3 3kW 05 10 0 5 12 1 18 1 24V 2 36V 2 44V 5 66V 5 88V 5 110V 5 165V 5 330V 5 660V Range 5kW 1 24V 2 36V 2 44V 5 66V 5 88V 5 110V 5 165V 5 330V 5 660V Output Ripple and Noise for 8V 15V models from 2V to 100 of rated output for all other models from 10 to 100 of rated output CC rms 3 3kW 1 3A 1 2A 880mA 660mA 300mA 200mA 100mA 80mA 70mA 60mA 20mA 10mA CC rms 5kW 1 0A 460mA 300mA 150mA 120mA 100mA 90mA 30mA 15mA Program
55. Agilent 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 monitored and automatically reconfigured when the instrument is unplugged for a minimum of 20 seconds and then reconnected to a network The front panel LAN indicator will come on when the LAN port is connected and configured Using the Web Server Your power supply has a built in Web server that lets you control it directly from an internet browser on your computer With the Web server you can control and configure all of the front panel functions as well as additional functions such as triggering and the LAN parameters which are not available from the front panel The built in Web server only operates over the LAN interface It requires Internet Explorer 5 or Netscape 6 2 You also need the Java Sun plug in This is included in the Java Runtime Environment Refer to Sun Microsystem s website The Web server is enabled when shipped To launch the Web server 1 Open the internet browser on your computer 2 Select Connections in the Tools menu under Internet Options Then select LAN Settings and make sure that the Bypass proxy server for local addresses box is checked 3 Enter the instrument s hostname into the browser s Address field to launch the Web server The following home page will appear 4 Click on the Browser Web Control button
56. Agilent Technologies System DC Power Supply Series N8700 User s Guide 3 Agilent Technologies Legal Notices O Agilent Technologies Inc 2009 No part of this document may be photocopied reproduced or translated to another language without the prior agreement and written consent of Agilent Technologies Inc as governed by United States and international copyright laws Warranty The material contained in this document is provided as is and is subject to being changed without notice in future editions Further to the maximum extent permitted by applicable law Agilent disclaims all warranties either express or implied with regard to this manual and any information contained herein including but not limited to the implied warranties of merchantability and fitness for a particular purpose Agilent shall not be liable for errors or for incidental or consequential damages in connection with the furnishing use or performance of this document or of any information contained herein Should Agilent and the user have a separate written agreement with warranty terms covering the material in this document that conflict with these terms the warranty terms in the separate agreement shall control Manual Editions Manual Part Number N8700 90001 Edition 2 July 2009 Printed in Malaysia Reprints of this manual containing minor corrections and updates may have the same printing date Revised editions are identifi
57. CV Ripple and Noise peak to peak N A 80 mV rms N A 25 mV Transient Response Voltage 1 ms 400 mV 400 mV Current Programming amp Readback Minimum Current lout 0 mA 252 mA Measurement Readback lout 126 mA lout 126 mA High Current lout 41 874 A 42 126 A Measurement Readback lout 168 mA lout 168 mA CC Load Effect 13 4 mA 13 4 mA CC Source Effect 6 2 mA 6 2 mA Test Description N8738A Settings Voltage Programming amp Readback Min Voltage lt 160 mV 168 mA Voltage Programming amp Readback High Voltage 80V 168 mA CV Load Effect Source Effect Ripple and Noise 80V 42A Transient Response 80V from 4 2A to 37 8A Current Programming amp Readback Min Current 168 mA 80V Current Programming amp Readback High Current 42A 80V CC Load Effect Source Effect 42A 80V N8738A Load Requirements Current shunt 0 0102 100A Agilent N3300 Electronic load modules 7 N3305A Fixed Resistor for CV Ripple and Noise 1 9Q 3 5 kw Series N8700 User s Guide Verification and Calibration Appendix B Test Record Agilent N8739A 100V 33A 3 3kW Agilent N8739A Report No Date Description Minimum Specs Results Maximum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV 250 mV Measurement Readback Vout 100 mV Vout 100 mV High Voltage Vout 99 9 V 100 1 V Measurement Readback Vout 200 mV Vout 200 mV CV Load Effect 20 mV 20 mV CV Source Effect 12 mV 12 mV CV Ripple and Noise peak
58. Display indicates OUP Is the power supply configured for remote sensing Check if the positive or negative load wire is loose Output voltage will not adjust Front panel CC LED is on Is the power supply in constant current mode Check the current limit setting and load current Output voltage will not adjust Front panel CV LED is on Is the output voltage being adjusted above the OVP setting or below the UVL setting Set the OVP or UVL so that they will not limit the output Output current will not adjust Front panel CV LED is on Large ripple present in output Is the unit in constant voltage mode Is the power supply in remote sense Is the voltage drop on the load wire high Check the current limit and voltage setting Check load and sense wires connection for noise and impedance effects Minimize the drop on the load wires No output Display indicates OUP Over voltage circuit has tripped Turn off the POWER switch Check load connections If analog programming is used check if the OVP is set lower than the output No output Front panel PROT indicator is blinking Display indicates ENA Display indicates SO Display indicates 07P Display indicates OCP Check connector J1 ENABLE connection Also check SW1 switch setting Check connector J1 Output Shut Off connection Check if air intake or exhaust is blocked Check if unit is installed next to heat
59. Effect 8mV 8 mV CV Source Effect 2mV 2mV CV Ripple and Noise peak to peak N A eo 75 mV rms N A EE 10 mV Transient Response Voltage 1 ms 100 mV 100 mV Current Programming amp Readback Minimum Current lout 0 mA 1 75A Measurement Readback lout 750 mA med lout 750 mA High Current lout 249 A n 251 A Measurement Readback lout 1 0 A lout 1 0 A CC Load Effect 250 mA 250 mA CC Source Effect 125 mA 125 mA Test Description N8754A Settings Voltage Programming amp Readback Min Voltage lt 30 mV 1A Voltage Programming amp Readback High Voltage 20V 1A CV Load Effect Source Effect Ripple and Noise 20V 250A Transient Response 20V from 25A to 225A Current Programming amp Readback Min Current 1A 20V Current Programming amp Readback High Current 250A 20V CC Load Effect Source Effect 250A 20V N8754A Load Requirements Current shunt 0 0012 300A Agilent N3300 Electronic load modules 9 N3306A Fixed Resistor for CV Ripple and Noise 0 08Q 5 5 kw Series N8700 User s Guide 117 Appendix B Verification and Calibration 118 Test Record Agilent N8755A 30V 170A 5SkW Agilent N8755A Report No Description Minimum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV Vout 37 5 mV High Voltage Vout 29 97 V Vout 45 mV CV Load Effect 9 5 mV CV Source Effect 3mv Measurement Readback Measurement Readback CV Ripple and Noise peak to peak rms Transient Respon
60. Head AMP p n 58063 1 CAUTION Pins 12 22 and 23 of J1 are connected internally to the negative sense S potential of the power supply Do not attempt to bias any of these pins relative to the negative output terminal Use an isolated ungrounded programming source to prevent ground loops and to maintain the isolation of the power supply when programming from 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 35 Series N8700 User s Guide 3 Operating the Power Supply Locally Turi 00 Check Uut us 38 Normal CDRP ALO ninenin anisini ia 40 Protecion PUNE ONS arenaene abides 41 TU GE EN EE 44 Analog Programming of Output Voltage and Current oooorosvssvssrsrrnrnnn 47 This chapter contains examples on how to operate your power supply from the front panel A check out procedure is included to let you verify that the power supply is operating properly Additionally information about programming the power supply using the J1 analog programming connector is also provided The simple examples discussed in this chapter show you how to program output voltage and current functions protection functions output on off functions safe start and auto restart analog programming of voltage and current front panel locking Refer to chapters 4 and 5 for information on programming your power supply using SCPI commands
61. J1 pins 2 and 3 POWER SUPPLY POWER SUPPLY 2 3 J1 15 J1 2 3 J1 16 J1 15 J1 2 3 J1 16 J1 15 pply OK Shut Off mer Supply OK Shut Off Supply OK Shut Off Series N8700 User s Guide Operating the Power Supply Locally 3 Analog Programming of Output Voltage and Current CAUTION J1 pin 12 pin 22 and pin 23 are internally connected to the negative sense terminal Do not reference these pins to any terminal other than the negative sense terminal as it may damage the unit In Local mode the output voltage and current is programmed with the front panel VOLTAGE and CURRENT knobs or over the remote interface In Analog mode the output voltage and current can be programmed either by an analog voltage or by resistors connected to the rear panel J1 connector The J1 connector also provides monitoring signals for the output voltage and output current The programming range and monitoring signal range can be selected using the SW1 setup switch With analog programming enabled you cannot program the output voltage or current using the front panel knobs or the remote interface However you can read back output voltage or current from the front panel or the remote interface Analog Programming Control Terminals Series N8700 User s Guide J1 connector pin 8 accepts a TTL signal or an open short contact switch referenced to pin 12 to select between Local or Analog programming of the output voltage and curre
62. OPTIONAL SETS UPPER LIMIT UPPER LIMIT Series N8700 User s Guide 49 3 Operating the Power Supply Locally 50 External Monitoring of Output Voltage and Current The J1 connector also provides analog signals for monitoring the output voltage and current Selection of the voltage range between 0 5V or 0 10V is made by SW1 setup switch 4 The monitoring signals represent 0 to 100 of the power supply output voltage and current rating The monitor outputs have a 500Q series output resistance Make sure that the sensing circuit has an input resistance greater than 500 kQ or the accuracy will be reduced SW1 switch 4 Voltage J1 signal Signal function range connection Down default 0 5V J1 pin 11 Voltage Monitor J1 pin 24 Current Monitor Up 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 4 Operating the Power Supply Remotely Connecting to the Interfaces nosmnvrvsvvrvsrsrvvvvesvvsrrrsresresresresrrrssesrssrensnn 52 SCPI Commands an Introduction 0 0 ccecesssesesscsssssescessceseseesevsceseesevsesnenses 62 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 Detailed information on configuring the rem
63. OTection CLEar STATus OPERation CONDition The following message shows how to combine commands from different subsystems as well as within the same subsystem VOLTage LEVel 7 5 PROTection 10 CURRent LEVel 0 25 Note the use of the optional keyword LEVel to maintain the correct path within the subsystems and the use of the root specifier to move between subsystems The simplest SCPI command is a single message unit consisting of a keyword followed by a message terminator such as newline The message unit may include a parameter after the keyword The parameter can be numeric or a string ABORt lt NL gt VOLTage 20 lt NL gt VOLTage TRIGgered MINimum lt NL gt 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 63 4 Operating the Power Supply Remotely Queries In the previous examples the upper case letters indicate the abbreviated spelling for the keyword For shorter program lines you can send the abbreviated form For better program readability you can send the long form For example VOLT and VOLTage are both acceptable forms You can use upper or lower case letters Therefore VOLTAGE Volt and volt are all acceptable Other forms such as VOL and VOLTAG generate an error You can query the current value of most commands by addi
64. Operation According to EN 27779 Type Test Schalldruckpegel Lp lt 70 dB A Am Arbeitsplatz Normaler Betrieb Nach EN 27779 Typpriifung 94 Series N8700 User s Guide Specifications Appendix A Supplemental Characteristics continued Model 3 3kW 5kW N8731A N8732A N8733A N8734A N8735A N8736A N8737A N8738A N8739A N8740A N8741A N8742A N8754A N8755A N8756A N8757A N8758A N8759A N8760A N8761A N8762A Regulatory Compliance EMC Complies with European EMC Directive for test and measurement products e IEC EN 61326 1 e CISPR 11 Group 1 class A e AS NZS CISPR 11 e ICES NMB 001 Complies with the Australian standard and carries the C Tick mark This ISM device complies with Canadian ICES 001 Cet appareil ISM est conforme la norme NMB 001 du Canada Safety Complies with the European Low Voltage Directive and carries the CE marking Conforms to UL 61010 1 and CSA C22 2 61010 1 AC Input Nominal Input 3 3kW single phase 3 3kW amp 5kW 3 phase 3 3kW amp 5kW 3 phase Input Current 3 3kW single phase 3 3kW 3 phase 3 3kW 3 phase 5kW 3 phase 5kW 3 phase Input Range Single phase models 3 phase 200V models 3 phase 400V models Input VA 3 3kW units 5kW units Power Factor 3 3kW units 3 3kW units 5kW units Efficiency 3 3kW units 5kW units Inrush Current Single phase models 3 phase 200V models 3 phase 400V models ALL Models 190 240 Vac 50 60Hz 200 Vac Models 190 24
65. Position 7 6 5 4 3 2 1 0 Bit Value 128 32 16 8 4 1 Bit Name PON CME EXE DDE QUE OPC PON Power on has occurred DDE Device dependent error CME Command error QUE Query error EXE Execution error OPC Operation complete This query reads the Standard Event Status Event register Reading the register clears it The bit configuration is the same as the Standard Event Status Enable register see ESE This command causes the instrument to set the OPC bit bit 0 of the Standard Event Status register when the instrument has completed all pending operations Pending operations are complete when All commands sent before OPC have been executed This includes overlapped commands Most commands are sequential and are completed before the next command is executed Commands that affect output voltage current or state relays and trigger actions are executed in parallel or overlapped with subsequent commands sent to the power supply The OPC command provides notification that all overlapped commands have been completed All triggered actions are completed OPC does not prevent processing of subsequent commands but bit 0 will not be set until all pending operations are completed OPC causes the instrument to place an ASCII 1 in the Output Queue when all pending operations are completed Unlike OPC OPC prevents processing of all subsequent commands It can be used at the end of a command line so that the program can
66. S V V DC voltmeter scope or rms voltmeter Electronic Load Many of the test procedures require the use of a variable load capable of dissipating the required power If a variable resistor is used switches should be used to either connect disconnect or short the load resistor For most tests an electronic load can be used The electronic load is considerably easier to use than load resistors but it may not be fast enough to test transient recovery time and may be too noisy for the noise PARD tests Fixed load resistors may be used in place of a variable load with minor changes to the test procedures Also if computer controlled test setups are used the relatively slow compared to computers and system voltmeters settling times and slew rates of the power supply may have to be taken into account Wait statements can be used in the test program if the test system is faster than the power supply Current Monitoring Resistor The 4 terminal current shunt is used to eliminate output current measurement error caused by voltage drops in the load leads and connections It has special current monitoring terminals inside the load connection terminals Connect the voltmeter directly to these current monitoring terminals Test Set up The following figure illustrates the test set up used for the verification procedures Power Supply Power Supply Resistor DC voltmeter scope or rms voltmeter
67. Series N8700 User s Guide Source Commands SOURce SOURce SOURce SOURce Source commands program the voltage current triggered and protection functions Language Reference 5 JCURRent LEVel IMMediate AMPLitude lt value gt MIN MAX JCURRent LEVel IMMediate AMPLitude MIN MAX JCURRent LEVel TRIGgered AMPLitude lt value gt MIN MAX JCURRent LEVel TRIGgered AMPLitude MIN MAX These commands set the immediate and the triggered output current Values are programmed in amperes The immediate level is the output current setting The triggered level is a stored value that transfers to the output when a trigger occurs The RST values Min Model I rating 400A 330A 220A 165A 110A 85A 55A 42A 33A 22A 11A 5 5A Minimum current 0 0 0 0 0 0 0 0 0 0 0 0 Maximum current 420 346 5 231 173 25 115 5 89 25 57 75 44 1 34 65 23 1 11 55 5 775 Model I rating 250A 170A 125A 85A 65A 50A 34A 17A 8 5A Minimum current 0 0 0 0 0 0 0 0 0 Maximum current 262 5 178 5 131 25 89 25 68 25 52 5 35 7 17 85 8 925 SOURce CURRent PROTection STATe ON OFF SOURce CURRent PROTection STATe SOURce SOURce SOURce SOURce This command enables or disables the over current protection OCP function The enabled state is On 1 the disabled state is Off 0 If the over current protection function is enabled and the output goes into constant current operation the output is d
68. TAT ON Set the current limit high enough to allow unrestricted voltage programming ISET 0 5 Select voltage calibration CAL VOLT Series N8700 User s Guide Series N8700 User s Guide Step 5 Step 6 Step 7 Step 8 Step 9 Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Verification and Calibration Appendix B Select the first voltage calibration point CAL LEV P1 OPC Measure the output voltage and enter the data CAL DATA lt data gt Select the second voltage calibration point CAL LEV P2 OPC Measure the output voltage and enter the data CAL DATA lt data gt Exit calibration mode CAL STAT OFF Current Programming and Measurement Calibration Connect a precision shunt resistor to an output Connect the Agilent 3458A across the shunt The shunt should be able to measure at least 120 of the power supply s rated full scale current Enable current calibration mode RST OUTP ON CAL STAT ON Set the output voltage high enough to compensate for any voltage drops on the load leads and current shunt VSET 0 5 Select current calibration CAL CURR Select the first current calibration point CAL LEV P1 OPC Calculate the shunt current I V R and enter the data CAL DATA lt data gt Select the second current calibration point CAL LEV P2 OPC Calculate the shunt current I V R
69. UPPLY Remote Sensing One of the units operates as a master and the remaining units are slaves The slave units operate as controlled current sources following the master output current In remote operation only the master unit can be programmed by the computer while the slave units may be connected to the computer for voltage current and status readback only It is recommended that each unit supplies only up to 95 of its current rating because of the imbalance that may be caused by cabling and connections voltage drops Setting up the Master Unit Connect the sensing circuit for either local or remote sensing as shown in the previous figures Set the master unit output voltage to the desired voltage Program the current limit to the desired load current limit divided by the number of parallel units During operation the master unit operates in constant voltage mode regulating the load voltage at the programmed output voltage Setting up the Slave Units Set the rear panel setup switch SW1 position 2 to it s up position Connect J1 pin 10 Curr Prog of the slave unit to J1 pin 25 Parallel of the master unit Connect J1 pin 23 Curr Prog Rtn of the slave unit to J1 pin 12 Common of the master unit Also connect a short between J1 pin 8 and J1 pin 12 The output voltage of the slave units should be programmed HIGHER than the output voltage of the master unit to prevent interference with the master unit s control The current
70. V CV Source Effect 62 mV 62 mV CV Ripple and Noise peak to peak N A 500 mV rms N A 120 mV Transient Response Voltage 2 ms 3V 3V Current Programming amp Readback Minimum Current lout 0 mA 33 mA Measurement Readback lout 16 5 mA lout 16 5 mA High Current lout 5 4835 A 5 5165 A Measurement Readback lout 22 mA lout 22 mA CC Load Effect 6 1 mA 6 1 mA CC Source Effect 2 6 mA 2 6 mA Test Description N8742A Settings Voltage Programming amp Readback Min Voltage lt 1 2V 22 mA Voltage Programming amp Readback High Voltage 600V 22 mA CV Load Effect Source Effect Ripple and Noise 600V 5 5A Transient Response 200V from 0 55A to 4 95A Current Programming amp Readback Min Current 22 mA 600V Current Programming amp Readback High Current 5 5A 600V CC Load Effect Source Effect 5 5A 600V N8742A Load Requirements Current shunt 0 1Q 15 A Use fixed resistor instead of load modules 109Q 3 5 kW or Amrel 5KW 600V 300A electronic load Fixed Resistor for CV Ripple and Noise 109Q 3 5 kW Series N8700 User s Guide Verification and Calibration Appendix B Test Record Agilent N8754A 20V 250A 5SkW Agilent N8754A Description Report No Date Minimum Specs Results Maximum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV 55 mV Measurement Readback Vout 25 mV Vout 25 mV High Voltage Vout 19 98 V 20 02 V Measurement Readback Vout 30 mV Vout 30 mV CV Load
71. V Transient Response Voltage 1 ms 100 mV 100 mV Current Programming amp Readback Minimum Current lout 0 mA 990 mA Measurement Readback lout 495 mA lout 495 mA High Current lout 164 505 A 165 495 A Measurement Readback lout 660 mA lout 660 mA CC Load Effect 38 mA 38 mA CC Source Effect 18 5 mA 18 5 mA Test Description N8734A Settings Voltage Programming amp Readback Min Voltage lt 40 mV 660 mA Voltage Programming amp Readback High Voltage 20V 660 mA CV Load Effect Source Effect Ripple and Noise 20V 165A Transient Response 20V from 16 5A to 148 54 Current Programming amp Readback Min Current 660 mA 20V Current Programming amp Readback High Current 165A 20V CC Load Effect Source Effect 165A 20V N8734A Load Requirements Current shunt 0 0012 300A Agilent N3300 Electronic load modules 6 N3306A Fixed Resistor for CV Ripple and Noise 0 212 3 5 kw Series N8700 User s Guide Verification and Calibration Appendix B Test Record Agilent N8735A 30V 110A 3 3kW Agilent N8735A Description Report No Date Minimum Specs Results Maximum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV 75 mV Measurement Readback Vout 30 mV Vout 30 mV High Voltage Vout 29 97 V 30 03 V Measurement Readback Vout 60 mV Vout 60 mV CV Load Effect 9 5 mV 9 5 mV CV Source Effect 5 mV 5 mV CV Ripple and Noise peak to peak N A 60 mV rms N A g r 8 mV Transient Re
72. V Load Effect 20 mV 20 mV CV Source Effect 10 mV 10 mV CV Ripple and Noise peak to peak N A 100 mV rms N A 15 mV Transient Response Voltage 1 ms 500 mV 500 mV Current Programming amp Readback Minimum Current lout 0 mA 350 mA Measurement Readback lout 150 mA lout 150 mA High Current lout 99 8 A 100 2 A Measurement Readback lout 200 mA lout 200 mA CC Load Effect 50 mA 50 mA CC Source Effect 25 mA 25 mA Test Description N8759A Settings Voltage Programming amp Readback Min Voltage lt 150 mV 200 mA Voltage Programming amp Readback High Voltage 100V 200 mA CV Load Effect Source Effect Ripple and Noise 100V 50A Transient Response 100V from 5A to 45A Current Programming amp Readback Min Current 200 mA 100V Current Programming amp Readback High Current 50A 100V CC Load Effect Source Effect 50A 100V N8759A Load Requirements Current shunt 0 01 2 100 A Agilent N3300 Electronic load modules 11 N3305A Fixed Resistor for CV Ripple and Noise 2 0Q 5 5 kW Series N8700 User s Guide Verification and Calibration Appendix B Test Record Agilent N8760A 150V 34A 5SkW Agilent N8760A Report No Date Description Minimum Specs Results Maximum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV 422 5 mV Measurement Readback Vout 187 mV Vout 187 mV High Voltage Vout 149 85 V 150 15 V Measurement Readback Vout 225 mV Vout 225 mV CV Load Effect 27 5 mV
73. V ac mains L1 phase L2 phase Earth safety ground Single phase power supply attached to 208 V phase to phase distribution L1 phase L2 phase Earth 400 V safety ground Single phase power supply attached to 230 V phase to neutral distribution L3 phase 3 phase distribution for 3 3 kW and 5 kW units The following figure illustrates 3 phase distribution for 208 V or 400 V ac mains Earth safety ground L3 phase 20 Series N8700 User s Guide Installation 2 Input Connections for 3 3 kW and 5 kW units The AC input connector is located on the rear panel It is a 3 terminal wire clamp for 3 3 kW single phase units or a 4 terminal wire clamp for 3 3 kW and 5 kW 3 phase units Input voltage and current ratings are as follows Unit Nominal AC Input Current Frequency Input 100 load 3 3 kW single phase 190 240 VAC 23 24 A max 50 60 Hz 3 3 kW 3 phase 190 240 VAC 13 6 14 5 A max 50 60 Hz 380 415 VAC 6 8 7 2 max 50 60 Hz 5 kW 3 phase 190 240 VAC 21 22 A max 50 60 Hz 380 415 VAC 10 5 12 A max 50 60 Hz The AC input line voltage rating is permanently built into the unit and cannot subsequently be changed Series N8700 User s Guide Connect the cable to the AC input connector as follows 1 Strip the outside insulation of the AC cable approximately 10 cm 4 in Trim the wires so that the green yellow g
74. age drops slightly 5 Divide the voltage drop DVM reading across the current monitoring resistor by its resistance to convert to amps and record this value Jout 6 Short the electronic load Divide the voltage drop DVM reading across the current shunt by its resistance to convert to amps and record this value Jout 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 CC Source Effect Test category performance This test measures the change in output current that results from a change in AC line voltage from the minimum to maximum value within the line voltage specifications 1 Turn off the power supply and connect the ac power line through a variable voltage transformer or AC source 2 Connect the current shunt DVM and electronic load as shown in figure B Connect the DVM directly across the current shunt Set the variable voltage transformer to nominal line voltage 3 To ensure that the values read during this test are not the instantaneous measurement of the AC peaks of the output current ripple several DC measurements should be made and averaged If you are using an Agilent 3458A you can set up the voltmeter to do this automatically From the instrument s front panel program 100 power line cycles per measurement Press NPLC 100 ENTER 4 Turn on the power supply and program the output cu
75. and configuring your instrument on a local area network LAN The two types of local area networks connections that are discussed in this section are site networks and private networks 53 4 Operating the Power Supply Remotely 54 Connecting to a Site LAN 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 To Network Interface To LAN Port Card NIC To Site LAN Instrument 1 Ifyou have not already done so install the Agilent IO Libraries Suite from the Automation Ready CD ROM that is shipped with your product 2 Connect the instrument to the site LAN Provided that your network has a DHCP server and uses Dynamic DNS naming service the instrument will automatically obtain an IP address from the network This may take up to one minute It will also register its hostname with the dynamic DNS server The default hostname can then be used to communicate with the instrument The front panel LAN indicator will come on when the LAN port has been configured If you are unable to communicate with the instrument check that a valid IP address has been assigned Press the front panel LAN button to view the IP address Each Agilent N8700 power supply is shipped with a default hostname with the format A modelnumber serialnumber
76. are active the interface with the most recently changed remote local state determines the instrument s remote local state The remote local state is unaffected by RST or any SCPI commands other than SYSTem COMMunicate RLState At power on however the communications setting always returns to LOCal SYSTem COMMunicate TCPip CONTrol This query returns the control connection port number This is used to open a control socket connection to the instrument Refer to chapter 4 under Using Sockets for more information SYSTem ERRor This query returns the next error number and its corresponding message string from the error queue The queue is a FIFO first in first out buffer that stores errors as they occur As it is read each error is removed from the queue When all errors have been read the query returns 0 NO ERROR If more errors are accumulated than the queue can hold the last error in the queue will be 350 TOO MANY 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 81 5 Language Reference 82 IDN OPT This query requests the power supply to identify itself It returns a string of four fields separated by commas Agilent Technologies Manufacturer XXXXXA Model number follow
77. back Vout 90 mV Vout 90 mV CV Load Effect 14 mV 14 mV CV Source Effect 6 mV 6 mV CV Ripple and Noise peak to peak N A pee 75 mV rms N A EE 10 mV Transient Response Voltage 1 ms 300 mV 300 mV Current Programming amp Readback Minimum Current lout 0 mA 595 mA Measurement Readback lout 255 mA eee lout 255 mA High Current lout 84 66 A n 85 34 A Measurement Readback lout 340 mA lout 340 mA CC Load Effect 85 mA 85 mA CC Source Effect 425 mA 42 5 mA Test Description N8757A Settings Voltage Programming amp Readback Min Voltage lt 90 mV 340 mA Voltage Programming amp Readback High Voltage 60V 340 mA CV Load Effect Source Effect Ripple and Noise 60V 85A Transient Response 60V from 8 5A to 76 5A Current Programming amp Readback Min Current 340 mA 60V Current Programming amp Readback High Current 85A 60V CC Load Effect Source Effect 85A 60V N8757A Load Requirements Current shunt 0 019100 A Agilent N3300 Electronic load modules 9 N3306A Fixed Resistor for CV Ripple and Noise 0 7059 5 5 kW Series N8700 User s Guide Test Record Agilent N8758A 80V 65A 5SkW Verification and Calibration Appendix B Agilent N8758A Report No Date Description Minimum Specs Results Maximum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV 220 mV Measurement Readback Vout 100 mV Vout 100 mV High Voltage Vout 79 92 V 80 08 V Measurement Readback Vout 120 mV Vou
78. cated conditions are fully understood and met Safety Symbols Direct current Alternating current Both direct and alternating current Three phase alternating current Earth ground terminal Protective earth ground terminal Frame or chassis terminal Terminal is at earth potential Neutral conductor on permanently installed equipment Line conductor on permanently installed equipment On supply Off supply Standby supply Unit is not completely disconnected from ac mains when switch is off In position of a bi stable push switch Out position of a bi stable push switch Caution risk of electric shock Caution hot surface Caution refer to accompanying documents Do not dispose in domestic household waste Xeen 1 eo T ZAP Oe SN In this Book This User s Manual contains the operating instructions installation instructions and specifications of the Agilent Technologies Series N8700 3 3kW and 5kW System DC Power Supplies Specific chapters in this manual contain the following information Quick Reference Chapter 1 is a quick reference section that helps you quickly become familiar with your Agilent N8700 power supply Installation Chapter 2 describes how to install your power supply It describes how to connect various loads to the output It discusses remote sensing as well as parallel and series operation Operating the Power Supply Locally Chapter 3 describes how to
79. cation Set ioMgr New AgilentRMLib SRMC1s Set Instrument New VisaComLib FormattedI0488 Set Instrument IO ioMgr Open IOaddress VoltSetting 3 CurrSetting 1 5 amps overVoltSetting 10 overCurrOn 1 I 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 amp Str VoltSetting 86 Series N8700 User s Guide Set the over voltage level WriteString VOLT PROT LEV amp Str overVoltSetting Turn on over current protection WriteString CURR PROT STAT amp StrS overCurrOn Set the current level WriteString CURR amp Str CurrSetting Turn the output on WriteString OUTP ON Make sure that the output is on before continuing WriteString OPC ReadString Measure the voltage WriteString Meas Volt measVolt ReadNumber MsgBox Measured Voltage is amp Str measVolt Check instrument for any errors WriteString Syst err ErrString ReadString give message if there is an error If Val ErrString Then MsgBox Error in instrument amp vbCrLf amp ErrString End If End With Series N8700 User s Guide Programming Examples 6 87 6 Programming Examples Trigger Programming Example This example illustrates how to set up and trigger a voltage and curre
80. character was found in the command string Syntax error Invalid syntax was found in the command string Check for blank spaces Invalid separator An invalid separator was found in the command string Check for proper use of Data type error A different data type than the one allowed was found in the command string GET not allowed A group execute trigger is not allowed in a command string Parameter not allowed More parameters were received than were expected Missing parameter Fewer parameters were received than were expected Command header error An error was detected in the header Header separator error A character that was not a valid header separator was found in the command string Program mnemonic too long The header contains more than 12 characters Undefined header A command was received that was not valid for this instrument Header suffix out of range The value of the numeric suffix is not valid Numeric data error Generic numeric data error Invalid character in number An invalid character for the data type was found in the command string Exponent too large The magnitude of the exponent was larger than 32000 Too many digits The mantissa of a numeric parameter contained more than 255 digits excluding leading zeros Numeric data not allowed A numeric parameter was received but a character string was expected Suffix error Generic suffix error Invalid suffix A suffix was incorrectly specified fo
81. check that a valid IP address has been assigned Press the front panel LAN button to view the IP address 4 Use the Connection Expert utility of the Agilent 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 If the instrument cannot be found you can add the instrument using the instrument s hostname The default hostname is described under Connecting to a Site LAN If this does not work refer to the chapter on Troubleshooting Guidelines in the Agilent Technologies USB LAN GPIB Interfaces Connectivity Guide Series N8700 User s Guide 55 4 Operating the Power Supply Remotely 56 5 You can now use Interactive IO within the Connection Expert to communicate with your instrument 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 instrument as described under Using the Web Server LAN Communication The Agilent IO Libraries Suite along with instrument drivers for specific programming environments can be used to communicate with your power supply Your can also communicate with your power supply using its built in Web server the Telnet utility or sockets These latter methods are a convenient way to communicate with the power supply without using I O libraries or drivers Ethernet Connection Monitoring
82. ctive earth terminal That terminal must be connected to earth ground through power source equipped with a ground receptacle Refer to the Safety Summary page at the beginning of this guide for general safety information Before installation or operation check the power supply and review this guide for safety warnings and instructions Safety warnings for specific procedures are located at appropriate places throughout this Guide Refer to all WARNINGS CAUTIONS and NOTES in the Connecting the Line Cord section prior to connecting the unit to an AC source Do not operate the instrument in the presence of flammable gasses or fumes Airflow The environmental conditions dimensions of the instrument as well as an outline diagram are given in Appendix A The instrument should only be operated indoors in a controlled environment Do not operate the power supply in an area where the ambient temperature exceeds 40 C Agilent N8700 power supplies generate magnetic fields which may affect the operation of other instruments If your equipment is susceptible to magnetic fields do not position it adjacent to the power supply Fans cool the power supply by drawing air through the front and exhausting it out the back The instrument must be installed in a location that allows sufficient space of at least 10 cm 4 in at the front and back of the unit for adequate air circulation Bench Installation Attach the four plastic feet that ar
83. data not allowed Expression data element was sent but is not allowed for this command Execution Errors these errors set Standard Event Status register bit 4 Execution error Generic syntax error Parameter error A data element related error occurred Settings conflict A data element could not be executed because of the present instrument state Data out of range A data element could not be executed because the value was outside the valid range Too much data A data element was received that contains more data than the instrument can handle Illegal parameter value An exact value was expected but not received Out of memory The device has insufficient memory to perform the requested operation Lists not same length One or more lists are not the same length Data corrupt or stale Possible invalid data A new reading was started but not completed Series N8700 User s Guide 231 232 233 240 241 260 261 400 410 420 430 440 Service Appendix C Execution Errors continued Data questionable The measurement accuracy is suspect Invalid format The data format or structure is inappropriate Invalid version The version of the data format is incorrect to the instrument Hardware error The command could not be executed because of a hardware problem with the instrument Hardware missing The command could not be executed because of missing hardware
84. dix 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 41 3 Operating the Power Supply Locally 42 1 Press the OUT ON button to turn the output on Turn the AC power off wait a few seconds and turn it on Turn the output off then on again using the Shut Off pin on the J1 connector This only applies in Auto Restart mode 4 Ifthe OVP continues to trip try lowering the output voltage below the OVP setting or raising the OVP setting Under Voltage Limit Under voltage limit is a protection function that prevents adjustment of the output voltage below a set limit either from the front panel or remote interface It does NOT include protection trip circuitry like the over voltage protection The combination of UVL and OVP lets you create a protection window for sensitive load circuitry Setting the UVL can be made when the output is enabled On or disabled Off To set the UVL level press the OVP UVL button twice so that the display shows UUL The display will show the UVL setting Rotate the voltage knob to adjust the UVL level The display will show UUL and the setting value for another five seconds and then return to its previous state The UVL settings are limited at the maximum level to approximately 5 below the output voltage setting Attemptin
85. e PC Instrument 1 Ifyou have not already done so install the Agilent IO Libraries Suite from the Automation Ready CD ROM that is shipped with your product 2 Connect the instrument to the computer using a LAN crossover cable Alternatively connect the computer and the instrument to a standalone hub or switch using regular LAN cables Make sure your computer is configured to obtain its address from DHCP and that NetBIOS over TCP IP is enabled If the computer had been connected to a site LAN it may still retain previous network settings from the site LAN Wait one minute after disconnecting it from the site LAN before connecting it to the private LAN This allows Windows to sense that it is on a different network and restart the network configuration If you are running Windows 98 you may need to manually release the previous settings 3 The factory shipped instrument LAN settings are configured to automatically obtain an IP address from the network using a DHCP server or using AutolP if a DHCP server is not present You can leave these settings as they are Most Agilent products and most computers will automatically choose an IP address using auto IP if a DHCP server is not present Each assigns itself an IP address from the block 169 254 nnn Note that this may take up to one minute The front panel LAN indicator will come on when the LAN port has been configured If you are unable to communicate with the instrument
86. e Remedies THE REMEDIES PROVIDED HEREIN ARE THE CUSTOMER S SOLE AND EXCLUSIVE REMEDIES AGILENT TECHNOLOGIES SHALL NOT BE LIABLE FOR ANY DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES WHETHER BASED ON CONTRACT TORT OR ANY OTHER LEGAL THEORY Assistance This product comes with the standard product warranty Warranty options extended support contacts product maintenance agreements and customer assistance agreements are also available Contact your nearest Agilent Technologies Sales and Service office for further information on Agilent Technologies full line of Support Programs Technologies Licenses The hardware and or software described in this document are furnished under a license and may be used or copied only in accordance with the terms of such license Restricted Rights Legend Software and technical data rights granted to the federal government include only those rights customarily provided to end user customers Agilent provides this customary commercial license in Software and technical data pursuant to FAR 12 211 Technical Data and 12 212 Computer Software and for the Department of Defense DFARS 252 227 7015 Technical Data Commercial Items and DFARS 227 7202 3 Rights in Commercial Computer Software or Computer Software Documentation Trademarks Microsoft and Windows are U S registered trademarks of Microsoft Corporation Series N8700 User s Guide Safety Notices
87. e mode press the LIMIT button and then rotate the current knob The DC AMPS display will show the programmed current for 5 seconds after the adjustment has been completed and then indicate the actual output current When the output is disabled press the LIMIT button and then rotate the current knob The DC AMPS display will show the programmed current for 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 Operating the Power Supply Locally 3 CV CC Mode Crossover CV CC Signal CAUTION Protection Functions If the power supply is in constant voltage mode and the load current increases above the current limit setting the power supply switches to constant current mode If the load decreases below the current limit setting the power supply switches to constant voltage mode Do not connect the CV CC signal to a voltage source higher than 30 VDC Always connect the CV CC signal to the voltage source with a series resistor to limit the sink current to less than 10mA The CV CC signal available on the J1 connector indicates the operating mode of the power supply The CV CC signal is an open collector output with a 30V parallel zener at J1 pin 13 referenced to common at J1 pin 12 J1 pin 12 is connected internally to the S termina
88. e provided in the final installation The disconnect device must comply with UL CSA EN 61010 1 requirements It shall be in close proximity to the equipment shall be easily accessible and shall be marked as the disconnect device for this equipment The disconnect device must meet the input ratings requirements listed on the INPUT RATING label located on the top cover of each unit Refer to AC Input In Appendix A for details One of the following unterminated power cables is provided with each unit If required connect an appropriate locking type power plug to the end of the power cable Cable Option Part no Description Rating Wire Size Length Approvals OPT 831 p n 8121 1949 3 3kW single phase 300V 25 A 60 3x10 AWGNotet3 25m UL CSA OPT 832 p n 8121 1331 3 3kW single phase 250V 32 A 60 C 3x 4 mm Notel 25m Harmonized OPT 861 p n 8121 1946 3 3kW 5kW 3 phase 300V 25 A 90 C 4x 10 AWGNote23 2 5m UL CSA 190 240 VAG nominal OPT 862 p n 8121 1948 3 3kW 5kW 3 phase 450V 20 A 70 C 4x 2 5 mm2Note2 25m Harmonized 380 415 VAG nominal Note 1 2 wire plus one green yellow safety ground conductor Note 2 3 wire plus one green yellow safety ground conductor Note 3 10 AWG corresponds to 4mm2 Series N8700 User s Guide 19 2 Installation Single phase distribution for 3 3 kW units The following figure illustrates single phase distribution for 208 V or 230
89. e supplied with the unit when the instrument is mounted on a surface or when units are stacked without rack support When using the plastic feet a maximum of three units can be stacked You must allow for free airflow into the front of the unit and out of the back of the unit see Airflow CONNECTION TO AC SOURCE The power supply must be connected to the AC mains through a protective device such as a circuit breaker or fuse with a rating as described under Connecting the Line Cord The line cord cannot be used as a disconnect device for the power supply Series N8700 User s Guide 17 2 18 Installation Rack Installation CAUTION Ensure that the screws used to attach the rack slide kit do not penetrate more than 6 mm into the sides of the unit Do not block the air intake at the front or the exhaust at the rear of the unit The Agilent 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 To install the power supply in a rack 1 Use the front panel rack mount brackets to install the power supply in the rack 2 Use a support bracket to provide adequate support for the rear of the power supply 3 Rack mount slides can be attached to the unit when installing the unit in a standard 19 inch equipment rack Use the Agilent N5740A Rack Mount Slide Kit and refer to the following figure for assembly instructions Use two 10
90. eXtensions for Instrumentation El Done TT f internet 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 Type the SCPI commands at the prompt Using Sockets Agilent instruments have standardized on using port 5025 for SCPI socket services A data socket on this port can be used to send and receive ASCII SCPI commands queries and query responses All commands must be terminated with a newline for the message to be parsed All query responses will also be terminated with a newline The power supply allows any combination of up to three simultaneous data socket and telnet connections to be made The socket programming interface also allows a control socket connection The control socket can be used by a client to send device clear and to receive service requests Unlike the data socket which uses a fixed port number the port number for a control socket varies and must be obtained by sending the following SCPI query to the data socket SYSTem COMMunicate TCPip CONTrol After the control 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 All query responses will also be terminated with a newline
91. eadString Give message if there is an error If Val ErrString Then MsgBox Error in instrument amp vbCrLf amp ErrString End If End With End Sub Series N8700 User s Guide 89 Series N8700 User s Guide Appendix A Specifications Performance Specifications c ccscsssscsssscssescsssscsssscsssscsssesssssesssessessesneeesess 92 Supplemental Characteristics ccccsescssssscsssssessesesscsssssensessssseseessesecsensees 93 OG EET EN EE Re 96 This chapter lists the specifications and supplemental characteristics of the Agilent N8700 power supplies 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 Sensing is at the rear terminals of the power supply after a 30 minute warm up period Sense terminals are externally jumpered to their respective output terminals Supplemental characteristics are not warranted but are descriptions of typical performance determined either by design or type testing 91 Appendix A Specifications Performance Specifications Agilent Models N8731A N8742A and Models N8754A N8762A Model 3 3kW N8731A N8732A N8733A N8734A N8735A N8736A N8737A N8738A N8739A N8740A N8741A N8742A 5kW N8754A N8755A N8756A N8757A N8758A N8759A N8760A N8761A N8762A DC Output Ratings Note 1 Voltage 3 3kW 8V 10V 15V 20V 30V 40V 60V 8
92. eadback The readings should be within the limits specified in the test record for the appropriate model under Voltage Programming and Readback High Voltage Vout CV Load Effect Test category performance This test measures the change in output voltage resulting from a change in output current from full load to no load 1 Turn off the power supply and connect a DVM and an electronic load as shown in figure A 2 Turn on the power supply and program the output current to its maximum programmable value Imax and the output voltage to its full scale value 3 Set the electronic load for the output s full scale current The CV annunciator on the front panel must be on If it is not adjust the load so that the output current drops slightly 4 Record the output voltage reading from the DVM 5 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 100 Series N8700 User s Guide Series N8700 User s Guide Verification and Calibration Appendix B CV Source Effect Test category performance This test measures the change in output voltage that results from a change in AC line voltage from the minimum to maximum value within the line voltage specifications 1 Turn off the power supply and connect the ac power line through a variable voltage
93. ect 95 mV 95 mV CV Source Effect 60 mV 60 mV CV Ripple and Noise peak to peak N A 500 mV rms N A 120 mV Transient Response Voltage 2 ms 3V 3V Current Programming amp Readback Minimum Current lout 0 mA 59 5 mA Measurement Readback lout 25 5 mA lout 25 5 mA High Current lout 8 466 A 8 534 A Measurement Readback lout 34 mA lout 34 mA CC Load Effect 8 5 mA 8 5 mA CC Source Effect 4 3 mA 43 mA Test Description N8762A Settings Voltage Programming amp Readback Min Voltage lt 0 9V 34 mA Voltage Programming amp Readback High Voltage 600V 34 mA CV Load Effect Source Effect Ripple and Noise 600V 8 5A Transient Response 200V from 0 85A to 7 65A Current Programming amp Readback Min Current 34 mA 600V Current Programming amp Readback High Current 8 5A 600V CC Load Effect Source Effect 8 5A 600V N8762A Load Requirements Current shunt 0 1Q 15 A Use fixed resistor instead of load modules 70 6Q 5 5 kW or Amrel 5KW 600V 300A electronic load Fixed Resistor for CV Ripple and Noise 70 6Q 5 5 kW Series N8700 User s Guide 125 Appendix B Verification and Calibration Calibration 126 Refer to the Equipment Required section in this appendix for a list of the equipment required for calibration general outline of the procedure is as follows As shipped from the factory the calibration password is 0 which means password protection is removed and the ability to enter calibration mode is un
94. ed by a letter suffix 0 Zero or serial number if available lt A XX XX gt lt A XX XX gt Firmware revision power supply revision This query requests the unit to identify any installed options A 0 indicates no options are installed RCL lt state gt This command restores the power supply to a state that was previously stored in memory locations 0 through 15 with the SAV command Note that you can only recall a state from a location that contains a previously stored state All saved instrument states are lost when the unit is turned off RST This command resets the power supply to a factory defined state This state is defined as follows Note that RST also forces an ABORt command The RST settings are as follows CAL STAT Off SOUR CURR PROT STAT Off INIT CONT Off SOUR JVOLT 0 OUTP Off SOUR JVOLT LIM 0 SOUR JCURR 0 SOUR VOLT TRIG 0 SOUR JCURR TRIG 0 SOUR VOLT PROT MAXimum SAV lt state gt TST 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 This query always returns a zero Series N8700 User s Guide Language Reference 5 Trigger Commands Trigger commands consist of the Abort Trigger and Initiate commands Initiate commands initialize the trigger system Trigger commands control the triggering of the power supply ABORt This command cancels any trigger actions in progress and
95. ed by a new printing date Declaration of Conformity Declarations of Conformity for this product and for other Agilent products may be downloaded from the Web Go to http regulations corporate agilent com and click on Declarations of Conformity You can then search by product number to find the latest Declaration of Conformity Waste Electrical and Electronic Equipment WEEE Directive 2002 96 EC This product complies with the WEEE Directive 2002 96 EC marketing requirement The affixed product label see below indicates that you must not discard this electrical electronic product in domestic household waste Product Category With reference to the equipment types in the WEEE directive Annex 1 this product is classified as Monitoring and Control instrumentation product Do not dispose in domestic household waste To return unwanted products contact our local Agilent office or see www agilent com environment product for more information lt J Certification Agilent Technologies certifies that this product met its published specifications at time of shipment from the factory Agilent Technologies further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology to the extent allowed by the Institute s calibration facility and to the calibration facilities of other International Standards Organization members Exclusiv
96. eessseessscersseeseseeseaes 68 device Clear nnusunsemnenbiunenvenkne 66 MESSAGE Unit ssri 63 multiple commands nsevonrrvorrverrerersrvereversererseversevenee 62 Sa 62 shutoff terminals 2 ssussasamessnense 44 slave UDit nnennnvervrvrrrrrervrrerserersererseversererserersersrsersrsersrserersen 32 SOCketS unne eee aed 57 Source COMMAN S iea r 73 SOUR CURR IMM rrrrvrrerrerrensrrrrrrrrerverversersersersrnsnr 73 SOUR CURR PROT STAT nnnnnrnrvsrververerversersersersersrnsns 73 SOUR CURR TRIG rnnrrrvrrvrerrerrenserrrrerrerversersersersensensnr 73 SOUR VOLT IMM rorrrrrnrrorversrnrrerserverversersersersnnsnn 73 SOUR VOLT LIM LOW rrrrrrrrorrrrerrorerrerversersersersersrssnr 74 SOUR VOLT PROT LEV rnrrrrrrrrrrrrrrrrrververversersersensrnsnr 74 SOUR VOLT TRIG nnrrrvrvorerrersensererrersersersersersersersersnr 73 specifications characteristics oo ccc cscesesesesceseesesescetesssesesceeseseees performance nnesnrnrerrrvrneverseverseverseversererseverseverseversevenee status commands STAT OPER COND STAT OPER ENAB STAT OPER NTR STAT OPER PTR 000 STAT OPER s i nE 76 STAT PRES a 76 STAT QUES COND L nnnrrrrsrrrrrrrsvrrrrserverversersersersersrssnr 77 STAT QUES ENAB iria 78 STAT QUES NTR nnonrrrrvorsrsrnsrssrvsvsrvsrsersersersersersersessrssnn 78 STAT QUES PTR oviin 78 STAT QUES sa 77 Subnet Mask rnrrvrvrerrorerrorerrvrrseversererserersere
97. erences The Agilent N8700 will respond to multiple queries It will not allow a space separator between numbers It will not allow a user to query information read back only a portion of the information send another command and finish reading back the information from the original query Sending a second query without reading the response to the first will generate an error Model number queries will only return the N8700 model numbers Status functions Serial Poll will be controlled by the SCPI status model and will not act like a 603xA power supply SRQ will be controlled by the SCPI status model Parallel poll will not work Settings The full scale limits will match the Agilent N8700 limits Measurement Floating point numbers returned by the instrument may not have exactly the same syntax or number of digits Calibration Calibration must be done in SCPI Storage states The Agilent N8700 units have 16 volatile states Series N8700 User s Guide Compatibility Appendix D Compatibility Command Summary Compatibility Command ASTS CLR DLY lt delay gt DLY ERR FAULT FOLD FOLD HOLD HOLD ID IMAX IMAX IOUT ISET lt current gt ISET OUT lt on off gt OUT Series N8700 User s Guide The following table documents the compatibility commands that the Agilent N8700 power supplies support All compatibility commands are accepted however some commands do no
98. ersesersesesresesrereseeseseeseseeessene 83 AC input CONNECTIONS errvevrrrrrerereverersereveversrreseveversrseseverersrseseserer 21 AC INPUT onorrrorevvovevrsvevvsverrsvevessvesrsvesrevesreserreserresessener 12 95 ACCeSSOrleS n in nuvnnnvvnsvvinennnsvieien 16 analog programming external resistance external voltage oooo terminals ssssuinsvmvmn calibrati oMr ENR 126 current programming and measurement 127 equipment isiin 98 procede manninn Rn R 126 voltage programming and measurement 126 Calibration commands sssescsseseesessseseeeseessstessseeseseees GAECURR cee nee chen Ser ieee t GAL DATA sassanidene GAL DATE unna an GAL HEV rn ee eee bera brndegeded dg ijekanserdedddadeasden GAL PASS denn CALSTAT er cee ae GAL VOLT rnnrrvrvrverververserserserersersrsersersersersersersersersessnn CAUTION reene e a combining commands common commandS from different subsystems root specifier mm mnvnnvrnnveeveeveie command completimm as 66 synchronization seevrsevrvesisesrvresrreverevreevveerrer 66 common COMMAaNdS rssrsrrsrvrrsvrersrsersrrersrrsrsvsrsessrsessrssne 67 Series N8700 User s Guide compatibility command SUMMALY csscssessessessescstestesseseeseeseeneass 139 differences unumandrketnnunenvkemsnnvitee 138 connections 6V to GOV models esvrorrrrvrrrrvrerrererrrrerrrserrrsersrsersrser 24 BOV t
99. ersion of the manual Go to http www agilent com find N8700 to get the latest version of the manual Series N8700 User s Guide Contents 1 Quick Reference The Agilent N8700 DC Power Supplies At a Glance uu 8 The Front Panel At a Glance ssmesnssesssnsm 10 The Rear Panel At a Glance m somesomsnsnssennnn 12 2 Installation General Information cccccccssessesessscssscssssessssssssssssssesssssssesessssesssssessssesesees 16 Inspecting the Unit ccc cceecsesessesescsseeeeeeeseeseeceseeneseeceseeenseeseeeeeeneeeeees 16 Installing the Unit isipin tniki 17 Connecting the Line Cord c eccecsessessesesseseessesseesesessesseeseeseeaseesseseeseeaeenees 19 Connecting the Load osmmservvvvvvrsssessevseeenen 23 Output Voltage Sensing cccccccsessessesseseeseesessessesseseesesseeseeaesesstssneeeseeneeeees 27 Load Considerations erireisid eiaeiiai an iiaeaa oriai 29 Parallel Gonn ections nuansanssansnsiudetensekes ani niai 31 Series COMNECtIONS cccscescssesessesessesessesssssscssesssesssessssessesssesssesssesssseeseseesesees 33 J1 Connector Connections c ccccscscessssessssessssessessssssessssesssssessseessscsnescensseens 35 3 Operating the Power Supply Locally Turn On Check Out cecceseesecsessesessessesscsessessessessesseeecensseeateaeeaseessnssneateateasees 38 Normal Operation i tcanuanandvn aE RARE Kaaa AEREA EARE 40 Protection Functions sevevvvvrv
100. fied by the reset state when AC power returns In Auto Restart mode the power supply recovers its last settings when AC power returns Front Panel Lock Out The front panel controls can be locked to protect from accidental power supply parameter change Press and hold the LIMIT button to toggle between Locked front panel and Unlocked front panel The display will cycle between LFP and UFP Releasing the LIMIT button while one of the modes is displayed selects that mode In Unlocked front panel mode the front panel controls are enabled to program and monitor the power supply parameters In Locked front panel mode the VOLTAGE and CURRENT knobs the OCP 488 button and the OUT ON button are disabled The power supply will not respond to attempts to use these controls The display will show LFP to indicate that the front panel is locked The OVP UVL button remains active to preview the OVP and UVL setting The LIMIT button also remains active to preview the output voltage and current setting or to unlock the front panel This function operates independently of the SCPI SYST COMM RLST command 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 43 3 Operating the Power Supply Locally Output On Off Controls OUT ON button The Output On Off controls
101. fied register There are up to 16 store recall states Queries the present status The response represents the sum of the binary weights of the status register bits The response is STS lt n gt Always returns 0 Causes the settings held with HOLD 1 to be executed Sets the bits in the mask register to the setting The setting is an integer that represents the sum of the binary weights of the bits The mask register operates in conjunction with the status and fault registers Queries the present setting of the mask register The response is UNMASK lt n gt Sets the soft programming limit for voltage Attempting to program the voltage above this setting will generate an error Queries the VMAX setting The response is VMAX lt n gt Queries the measured output voltage The response is a real number Sets the output voltage Queries the present voltage setting The response is a real number VOLT PROT LEV VOLT PROT LEV RCL IDN OUTP PROT CLE SRO SRQ SAV STAT OPER COND STAT QUES COND ER ER P ES ES P UNUU GE 2 ER R ES R gt Ppp BB DD oG 00 0600 UNUUNU GE EE MEAS VOLT VOLT VOLT 140 Series N8700 User s Guide Index 4 188 mmrrrrerrvvevrvvererveverreserrevesresersesersesesreserreserresestesesresestenen 11 52 A ABOR iorvroroverroserreserresesresesresesres
102. g to adjust the UVL above this limit will result in no response to the adjustment attempt The minimum UVL setting is zero Over Current Protection Over current protection will shut down the power supply output if the load current reaches the current limit setting This protection is useful when the load is sensitive to an over current condition To arm the over current protection press the OCP 488 button so that the OCP indicator illuminates When armed a transition from constant voltage to constant current mode will activate the over current protection When an over current protection event occurs the output is disabled the display shows OCP the PROT indicator blinks and OC is set in the Questionable Condition status register Use one of the following methods to reset over current protection after it activates If the load current is still higher than the current limit setting the over current protection will be activated again 1 Press the OUT ON button to turn the output on 2 Turn the AC power off wait a few seconds and turn it on 3 Turn the output off then on again using the Shut Off pin on the J1 connector This only applies in Auto Restart mode 4 Press the OCP 488 button to cancel over current protection The display will show OFF because OCP protection is latched Press the 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 limi
103. h keyword within 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 Operating the Power Supply Remotely 4 previous command in the message up to and including the last colon separator An example of a message with two commands is OUTPut STATe ON PROTection CLEar which shows the use of the semicolon separating the two commands and also illustrates the command path concept Note that with the second command the leading keyword OUTPut was omitted because after the OUTPut STATe ON command the path became defined as OUTPut and thus the second command was interpreted as OUTPut PROTection CLEar In fact it would have been incorrect to include the OUTPut keyword in the second command because the result after combining it with the command path would be OUTPut OUTPut PROTection CLEar which would result in a syntax error Commands from Different Subsystems Message Unit Series N8700 User s Guide In order to combine commands from different subsystems you need to be able to reset the command path to a null string within a message Beginning the command with a colon discards the previous path For example you could clear the output protection and check the status of the Operation Condition register in one message by using a root specifier as follows OUTPut PR
104. he Line b d nanooaosenanssnmremm babben 19 Connecting the Load iiini an Aaaa 23 Duiput Voltage SQ SHIG secs ciscccsiscccscscecssssss disdncacsceedncacecssesncnsansebsncasencedhcaes 27 Load Considera DONS FEE 29 Parallel CONNECTIONS cccssssessessssessssssssssssssssesssssssessesssseessssessssssessessseeneess 31 Series COMM EI QING es cc c2sc ccccisescisctesscvadednssdstsecinsstesveiedieswsteibevidenteeeistsievesteate 33 J1 Connector Connections c cccccsscssssssessssessssesssssssesessssessesessessssescsnesesseseees 35 This chapter describes how to install your power supply It discusses installation rack mounting and line cord connections This chapter also discusses how to connect your load to the output terminals It discusses what you need to know about wire sizes and how to compensate for voltage drops in the load leads It also discusses various loads configurations and how to connect units in series and parallel Before getting started check the list under Items Supplied and verify that you have received these items with your instrument If anything is missing please contact your nearest Agilent Sales and Service Office 15 2 Installation General Information Models 3 3 kW Models 5 kW Models N8731A N8739A N8740A N8742A N8754A N8759A N8760A N8762A Items Supplied Accessories Inspecting the Unit 16 Item Description Power Cord Strain relief assembly AG
105. he 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 9 LAN indicator 10 LAN button 11 OCP 488 indicator 12 OCP 488 button 13 OVP UVL button 14 LIMIT button 15 LIMIT indicator 16 FINE button 17 FINE indicator 18 PROT indicator 19 POWER switch Series N8700 User s Guide Quick Reference 1 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 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 Press any key to turn the address display off Reset address Press and hold the LAN button for three seconds Pressing the LAN button again while the message LAn rES is displayed resets the LAN configuration to the factory shipped settings see chapter 4 for settings The display returns to normal and the configuration is not changed if the LAN button is not pressed again Indicates over current protection is enabled or on Enable OCP Press the OCP 488 button to turn over current protection on Press the OCP 488 button again to turn over current protection off Reset OCP Press the OUT ON bu
106. hort form of the parameter is returned Arbitrary ASCII Response Data Permits the return of undelimited 7 bit ASCII This data type has an implied message terminator String Response Data Returns string parameters enclosed in double quotes 65 4 Operating the Power Supply Remotely 66 SCPI Command Completion WAI OPC OPC SCPI commands sent to the power supply are processed either sequentially or in parallel Sequential commands finish execution before a subsequent command begins Parallel commands allow other commands to begin executing while the parallel command is still executing The following is a list of parallel commands You should use some form of command synchronization as discussed in this section before assuming that these commands have completed OUTPut STATe INITiate VOLTage OUTPut PROTection CLEar CURRent The WAI OPC and OPC common commands provide different ways of indicating when all transmitted commands including any parallel ones have completed their operations Some practical considerations for using these commands are as follows This command prevents the power supply from processing subsequent commands until all pending operations are completed For example the WAI command can be used to make a voltage measurement after an output on command has completed OUTPut ON WAI MEASure VOLTage This command places a 1 in the Output Queue when all pending operations have comple
107. ide Parameter Types Series N8700 User s Guide Operating the Power Supply Remotely 4 Data programmed or queried from the power supply is ASCII The data may be numerical or character string Numeric Parameters Symbol lt NR1 gt lt NR2 gt lt NR3 gt lt NRf gt lt NRf gt lt Bool gt lt SPD gt Response Formats Digits with an implied decimal point assumed at the right of the least significant digit Examples 273 Digits with an explicit decimal point Example 27 3 Digits with an explicit decimal point and an exponent Example 2 73E 02 Parameter Formats Extended format that includes lt NR1 gt lt NR2 gt and lt NR3 gt Examples 273 27 3 2 73E 02 Expanded decimal format that includes lt NRf gt and MIN MAX Examples 273 27 3 2 73E 02 MAX MIN and MAX are the minimum and maximum limit values that are implicit in the range specification for the parameter Boolean Data Can be numeric 0 1 or named OFF ON String program data String parameters enclosed in single or double quotes Suffixes and Multipliers Class Current Amplitude Time Suffix Unit Unit with Multiplier A ampere MA milliampere V volt MV millivolt S second MS millisecond Common Multipliers 1E3 1E 3 1E 6 K kilo M milli U micro Response Data Types Symbol lt CRD gt lt AARD gt lt SRD gt Response Formats Character Response Data Returns discrete parameters Only the s
108. ies the present current setting The response is a real number Turns the output on or off On off equals 1 turns the output on equals 0 turns the output off Queries whether the output is turned on or off The response is OUT 1 on or OUT O off The front panel displays OFF when the output is off Similar SCPI Command STAT OPER EVEN STAT QUES EVEN ESE SYST ERR STAT OPER STAT QUES ESE CURR PROT STA CURR PROT STAT VOLT TRIG CURR TRIG IDN MEAS CURR CURR CURR 139 Appendix D Compatibility Compatibility Command Description Similar SCPI Command OVP OVP RCL lt reg gt ROM RST SRQ lt setting gt SRO STO lt reg gt STS TEST TRG UNMASK lt setting gt UNMASK VMAX VMAX VOUT VSET lt voltage gt VSET Sets the over voltage trip point Queries the present over voltage setting The response is a real number Recalls the saved settings There are up to 16 store recall states Saved settings must have been previously stored using the STO command Queries the revision date of the power supply s firmware Resets any tripped protection Generates error 203 The service request capability of the power supply is only supported using the SCPI commands Always returns 0 Stores the present power supply settings in the speci
109. in the navigation bar on the left to begin controlling your instrument 5 For additional help about any of the pages click on the Help with this Page button If desired you can control access to the Web server using password protection As shipped from the factory no password is set To set a password refer to the section Configuring the LAN Parameters Series N8700 User s Guide Series N8700 User s Guide Operating the Power Supply Remotely 4 F Agilent N8741A US24H6612A Microsoft Internet Explorer provided by Agilent Technologies Inc ioj x File Edit View Favorites Tools Help Address http 1 206 59 v Go lt ONARIR GE unks customize Lins E windows aglent EJbeagient E Yahoo Support Agilent Site Agilent Technologies AAA AAA fami images Welcome to your System DC Power Supply N8741A System DC Power Supply Serial Number US24H6612A Description Agilent N8741A US24H661 2A TT F A N87414 H661 2 usa agilentcom B 2 4 rd br SSS I IP Address 141 121 206 59 VISA TCPIP Connect String TOPIPO A N8741A H6612 INSTR Turn On Front Panel Identification Indicator Mi Advanced Information Use the navigation bar on the leftto access your System DC Power Supply and related information Click the Web Control button in the navigation bar on the left to start the application Agilent Technologies Inc 2003 LXI LAN
110. ing the LAN Status tab Click the Refresh button to update the display with the assigned IP Address and Subnet Mask LAN Setup Utility for Agilent Technologies N8 7xxA Settings LAN Status Connections Model About LAN Status Current IP Address Source Current IP Address Current Subnet Mask Host Name Source Current Host Name Current Domain Name MAC Address LAN Speed 8 You can view information about the GPIB or USB interface by clicking the Connections tab LAN Setup Utility for Agilent Technologies N87xxA Settings LAN Status Connections Model About Interface Type r GPIB VISA Interface Name GPIEOD GPIB Address Siy Alias Name fUsbDevice4 VISA Resource Name a You can also use the Setup utility to view model specific information about your power supply Click the Model About tab to view the model number serial number active firmware version backup firmware version and output ratings 61 4 Operating the Power Supply Remotely SCPI Commands an Introduction 62 Syntax Square Brackets Angle brackets lt gt Vertical bar SCPI Standard Commands for Programmable Instruments is an ASCII based instrument command language designed for test and measurement instruments SCPI commands are based on a hierarchical structure also known as a tree system In this system associated commands are grouped together under common node or root thus forming subsystem
111. innnnnnnisnsiselnnissngnnidni 75 System EP GLE Le PE 81 Trigger COmmMands cscccccesscsessessessssnessesessessessessessesessesseeceesesaeeessesaneateateaees 83 This section gives the syntax and parameters for all the IEEE 488 2 SCPI Subsystem commands and Common commands used by the power supply It is assumed that you are familiar with the material in chapter 4 which explains the terms symbols and syntactical structures used here and gives an introduction to programming You should also be familiar with chapter 3 in order to understand how the power supply functions Subsystem commands are specific to functions They can be a single command or a group of commands The groups are comprised of commands that extend one or more levels below the root The subsystem commands are arranged alphabetically according to the function they perform Common commands begin with an and consist of three letters command or three letters and a query They are defined by the IEEE 488 2 standard to perform common interface functions Common commands are grouped along with the subsystem commands according to the function they perform 67 5 Language Reference SCPI Command Summary Some optional commands have been included for clarity All settings commands have a corresponding query Subsystem Commands SCPI Command ABORt CALibrate CURRent LEVel DATA lt NRf gt DATE lt SPD gt LEVel P1 P2 PASSword lt NRf gt
112. int P2 is the second calibration point CALibrate PASSword lt password gt 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 70 Series N8700 User s Guide Language Reference 5 CALibrate STATe ON OFF lt password gt CALibrate STATe This command enables disables calibration mode Calibration mode must be enabled for the power supply to accept any other calibration commands The first parameter specifies the enabled or disabled state On 1 or Off 0 The second parameter is the password A password is required if calibration mode is being enabled and the existing password is not 0 If the password is not entered or is incorrect an error is generated and the calibration mode remains disabled The query returns only the state not the password The RST value Off CALibrate VOLTage LEVel This command initiates the calibration of the output voltage Measure Commands Measure commands measure the output voltage or current MEASure commands acquire new data before returning the reading 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 v
113. ionable status of the power supply 71 5 Language Reference 78 STATus QUEStionable ENABle lt value gt STATus QUEStionable ENABle STATus STATus STATus STATus CLS This command and its query set and read the value of the Questionable Enable register This register is a mask for enabling specific bits from the Questionable Event register to set the questionable summary bit QUES of the Status Byte register This bit bit 3 is the logical OR of all the Questionable Event register bits that are enabled by the Questionable Status Enable register The Preset value 0 QUEStionable NTR lt value gt QUEStionable PTR lt value gt QUEStionable NTR QUEStionable PTR These commands set or read the value of the Questionable NTR Negative Transition and PTR Positive Transition registers These registers serve as polarity filters between the Questionable Condition and Questionable Event registers to cause the following actions When a bit of the Questionable NTR register is set to 1 then a 1 to 0 transition of the corresponding bit of the Questionable Condition register causes that bit in the Questionable Event register to be set When a bit of the Questionable PTR register is set to 1 then a 0 to 1 transition of the corresponding bit in the Questionable Condition register causes that bit in the Questionable Event register to be set If the same bits in both NTR and PTR registers are set to 1 then any
114. is query returns the value of the Operation Condition register That is a read only register which holds the live unlatched operational status of the power supply STATus OPERation ENABle lt value gt STATus OPERation ENABle 76 This command and its query set and read the value of the Operational Enable register This register is a mask for enabling specific bits from the Operation Event register to set the operation summary bit 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 STATus STATus STATus STATus Language Reference 5 OPERation NTR lt value gt OPERation PTR lt value gt OPERation NTR OPERation PTR These commands set or read the value of the Operation NTR Negative Transition and PTR Positive Transition registers These registers serve as polarity filters between the Operation Condition and Operation Event registers to cause the following actions When a bit in the Operation 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 of the Operation 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 regi
115. isabled and OC is set in the Questionable Condition status register The RST value Off An over current condition can be cleared with the Output Protection Clear command after the cause of the condition is removed J VOLTage LEVel IMMediate AMPLitude lt value gt MIN MAX VOLTage LEVel IMMediate AMPLitude MIN MAX J VOLTage LEVel TRIGgered AMPLitude lt value gt MIN MAX J VOLTage LEVel TRIGgered AMPLitude MIN MAX Series N8700 User s Guide These commands set the immediate and the triggered output voltage Values are programmed in volts The immediate level is the output voltage setting The triggered level is a stored value that transfers to the output when a trigger occurs The RST values Min The range of values that can be programmed for these commands is coupled with the voltage protection and the voltage limit low settings The maximum value for the immediate and triggered voltage level is either the value in the following table or the voltage protection setting divided by 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 73 5 Language Reference Note that triggered values can be programmed outside these limits but an error will be generated when the trigger occurs Model V rating 8v 10V 15V 20V 30V 40V 60V 80V 100V 150V 300V 600V Minimum voltage 0 0 0 0 0
116. ity TX LED indicates LAN activity See chapter 4 for LAN setup Connector for connecting to a USB interface See chapter 4 for setup M4x8 screws with nut for making chassis ground connections WARNING SHOCK HAZARD The AC power cable provides a chassis ground through the 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 12 Series N8700 User s Guide J2 Sense Connector 1 Remote sense 2 Local sense 3 Not used 4 Local sense 5 Remote sense Quick Reference 1 The factory shipped configuration is shown in the figure SW1 Setup Switch 1 Output voltage voltage programming 2 Output current voltage programming 3 Programming range voltage resistance 4 Voltage and Current monitoring range 5 Shut Off Logic Select 6 Not Used 7 Output voltage resistive programming 8 Output current resistive programming 9 Enable Disable control Series N8700 User s Guide The factory shipped setting is Down for all switches Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up The output voltage is programmed by the front panel The output voltage is programmed by the external voltage signal The output current i
117. k Vout 60 mV Vout 60 mV CV Load Effect 11 mV 11 mV CV Source Effect 4mV 4mV CV Ripple and Noise peak to peak N A Je 75 mV rms N A Se 10 mV Transient Response Voltage 1 ms 200 mV 200 mV Current Programming amp Readback Minimum Current lout 0 mA 875 mA Measurement Readback lout 375 mA dike lout 375 mA High Current lout 124 5 A n 125 5 A Measurement Readback lout 500 mA lout 500 mA CC Load Effect 125 mA 125 mA CC Source Effect 62 5 mA 62 5 mA Test Description N8756A Settings Voltage Programming amp Readback Min Voltage lt 60 mV 500 mA Voltage Programming amp Readback High Voltage 40V 500 mA CV Load Effect Source Effect Ripple and Noise 40V 125A Transient Response 40V from 12 5A to 112 5A Current Programming amp Readback Min Current 500 mA 40V Current Programming amp Readback High Current 125A 40V CC Load Effect Source Effect 125A 40V N8756A Load Requirements Current shunt 0 001Q 300 A Agilent N3300 Electronic load modules 9 N3306A Fixed Resistor for CV Ripple and Noise 0 32Q 5 5 kw Series N8700 User s Guide 119 Appendix B Verification and Calibration 120 Test Record Agilent N8757A 60V 85A 5SkW Agilent N8757A Report No Date Description Minimum Specs Results Maximum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV 165 mV Measurement Readback Vout 75 mV Vout 75 mV High Voltage Vout 59 94 V 60 06 V Measurement Read
118. l When the power supply operates in constant voltage mode CV CC output is open When the power supply operates in constant current mode CV CC signal output is low 0 0 6V with maximum 10 mA sink current Over Voltage Protection Series N8700 User s Guide The over voltage protection protects against over voltage conditions on the output If the output voltage attempts to exceed the programmed limit in response to an analog programming signal or in the event of a power supply failure the over voltage protection circuit will protect the load by disabling the output The voltage is monitored at the sense terminals thus providing the protection level directly at the load Upon detection of an over voltage condition the output is disabled the display shows OVP the PROT indicator blinks and OV is set in the Questionable Condition status register Adjustment of the over voltage setting can be made when the output is enabled On or disabled Off To set the OVP level press the OVP UVL button so that the display indicates OUP The display will show the OVP setting Rotate the voltage knob to adjust the OVP level The display will show OVP and the setting value for another five seconds and then return to its previous state The OVP settings are limited at the minimum level to approximately 5 above the output voltage setting Attempting to adjust the OVP below this limit will result in no response to the adjustment attempt Refer to Appen
119. l sense and between V and local sense will fail if load current flows through it Remote Sensing Use remote sensing in applications where load regulation at the load is critical Remote sensing allows the power supply to automatically compensate for the voltage drop in the load leads Refer to Appendix A for the maximum allowable voltage drop on the load wires Remote sensing is especially useful in constant voltage mode with load impedances that vary or have significant lead resistance It has no effect in constant current mode Because sensing is independent of other power supply functions it can be used regardless of how the power supply is programmed With remote sensing voltage readback monitors the load voltage at the remote sense points Use twisted or shielded wires to minimize noise pick up If shielded wires are used the shield should be connected to the ground at one point either at the power supply chassis or the load ground The optimal point for the shield ground should be determined by experimentation To configure the power supply for remote sensing Turn off the power supply Remove the local sense jumpers from the J2 connector Connect the negative sense lead to terminal 5 S and the positive sense lead to terminal 1 S Make sure that the connector plug is securely inserted into the connector body Turn on the power supply Load lines Twisted pair shortest length possible Power Supply
120. lance sesesrrrservvrenrsnsesvnnsavserversevserterssesestsresenssestene 12 This chapter concisely describes the Agilent Technologies Series N8700 Power Supplies This chapter is not meant to describe every operating feature in detail It is simply a quick reference guide to quickly become familiar with the essential components of the power supply It can also be used as a memory jogger for experienced users to quickly find a front rear panel function A quick reference programming command chart is included in the beginning of chapter 5 1 Quick Reference The Agilent N8700 DC Power Supplies At a Glance The Agilent 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 There are both 3 3 kW and 5 kW models These power supplies are power factor corrected and have flexible AC input voltage options Output voltage and current are continuously displayed and LED indicators show the complete operating status of the power supply The front panel controls allow the user to set the output parameters over voltage under voltage and over current protection levels and preview the settings The rear panel includes the necessary connectors to control and monitor the power supply operation by analog signals or by the built in remote communication interfaces Output Features Constan
121. ll resistors 3 5 kW minimum For 5 kW models 0 080 0 1760 0 32Q 0 7050 1 23Q 2 00 4 400 17 6Q 70 6Q all resistors 5 5 kW minimum 150V 400A 3 3KW minimum for Models N8731 N8740A 150V 250A 5kW minimum for Models N8754 N8760A 600 V 300 A 5kW minimum optional for models N8741A N8742A N8761A N8762A Full GPIB capabilities for calibrating over the GPIB Sensitivity 1 mV Bandwidth Limit 20 MHz Probe 1 1 with RF tip True RMS Bandwidth 20 MHz Sensitivity 100V Bandwidth 20 MHz 1 50 BNC termination 2 50 1 8W termination resistors Power 3 Phase 24KVA Range 180 235V 47 63Hz 360 440V 47 63Hz Test Records Recommended Model Agilent 3458A or equivalent Guildline 9230 15 Guildline 9230 100 Guildline 9230 300 Guildline 9230 500 Agilent N3300A mainframes up to 4 Agilent N3305A modules up to 11 Agilent N3306A modules up to 9 Amrel Model PLA 5K 600 300 Agilent 82350B or equivalent Agilent Infinitum or equivalent Rhode and Schwartz Model URE3 or equivalent LeCroy 1855A DA1850A or equivalent Superior Powerstat 1156DT 3Y 0 280V 50A 24 2 KVA or equivalent Test records for each power supply model are provided after the test procedure sections 3 3 kW test records are provided followed by the 5 kW test records Series N8700 User s Guide Verification and Calibration Appendix B Measurement Techniques Power Supply S LS LS S V V S LS LS
122. merical data formats sesserrororvrrvorversersersersersrrsnner 65 0 OP 11 OPER 80 operating checklist o rornorrorrrrrrrrrververversersersersrssnne 130 optional commandsS essnrvnrvrrrvrersrverseversererserersersrserenser 62 Series N8700 User s Guide output grounding sesecsesesesesseseesesesseseesesesseseeaeseeeeenees Output NOISE rorerrrororrrrrvererorrrrererersrrvererersrsrvererersrseverenen output ON OFF control o o eeserrvevreverreverreverreverreverserene output programming example over current Check essesessesesscseseesesesseseeseseesesesseseenseeess over current protection seaserveververververservrrrrsnns over temperature protection ceccsseeseeseeseeceseeseeseeseees power cord connecting power receptacle oono power supply OK signal power fail protection rack MOUNTING c sccseesesseesessessessessescesessessestestesteseeseeseesees 18 recycling plastic COMPONENETS ccssssseseeseesesseeseeseseeseeseeseees 136 remote voltage SENSING ccsessesessestesseseesesseseeseeseeseesees 28 rep ckagiN iorra 130 repacking meeenvvveneee0 16 Sl OLY EE 3 17 SCPI command completion omervonrvrrrrrrersvrrrserersvrrrsererser 66 Series N8700 User s Guide Index command Path ceeecsssecsesecssseeseseeseseeseseeseseeeseeesees 62 COMMAMNAS 1 ceesccsesesseseeseseesescesescesss
123. ming Resolution Measurement Resolution Voltage 3 3kW 0 96mV 12mV 1 8mV 24mV 3 6mV 48mV 72mV 96mV 12mV 18mV 36mV 72mV Voltage 5kW 24mV 3 6mV 48mV 72mV 9 6mV 12mV 18mV 36mV 72mV Current 3 3kW 48mA 39 6mA 26 4mA 19 8mA 13 2mA 102mA 66mA 5 0mA 4 0mA 26mA 1 3mA 0 66mA Current 5kW 30mA 204mA 15mA 102mA 78mA 60mA 41mA 20mA 1 0mA Front Panel Display Accuracy 4 digits of rated output voltage 1 count Voltage 3 3kW 40mV 50mV 75mV 100mV 150mV 200mV 300mV 400mV 500mV 750mV 15V 3 0 V Voltage 5kW 100mV 150mV 200mV 300mV 400mV 500mV 750mV 15V 3 0 V Current 3 3kW 2 0A 165A 1 10A 825mA 550mA 425mA 275mA 210mA 165mA 110mA 55mA 27 5mA Current 5kW 1 25A 850mA 625mA 425mA 325mA 250mA 170mA 85mA 42 5mA Temperature Stability over 8 hours after a 30 minute warm up with constant line load and temperature Voltage 3 3kW 4mV 5mV 7 5mV 10mV 15mV 20mV 30mV 40mV 50mV 75mV 150mV 300mV Voltage 5kW 10mV 15mV 20mV 30mV 40mV 50mV 75mV 150mV 300mV Current 3 3kW 200mA 165mA 110mA 825mA 55mA 425mA 275mA 21mA 16 5mA 11mA 5 5mA 2 8mA Current 5kW 125mA 85mA 625mA 425mA 32 5mV 25mV 17mA 85mA 4 3mA Temperature Coefficient after a 30 minute warm up Voltage 3 3kW units 100 PPM C from rated output voltage Voltage 5kW units 100 PPM C from rated output voltage Current 3 3kW units 200 PPM C from rated output current Current 5kW units 100 PPM C from rated output current Series N8700 User s Guide 93 Appendix A Specifications Supplemental Characteristics conti
124. mode Knobs operate with high resolution Coarse mode Knobs operate with lower resolution approximately six turns Indicates the unit is in the high resolution Fine adjustment mode Blinks when a fault has occurred OVP OCP OTP Enable fail and AC fail detection will cause the PROT protection indicator to blink The PROT indicator may blink and the display will indicate AC for a few seconds after the unit is turned off because of residual energy inside the unit Turns the power supply on or off 11 1 Quick Reference The Rear Panel At a Glance 150V 600V UO II CTS DC TD i GT D GF D ss CD wire clam gt wire clamp gt e ID Ce a gt HC Af D IF E ily z ID lt alg e Lo CHD 7 ID e i DCD D E CPP CoD ILD i gt G z I Gr Tv er 3 2 phase VAC TIDA DC EDGE ea DC IDC ENGS GID d dte Cub GE three conductor i Tos CID C eo Fer EE TI TA AMC D G 1 C gt Po
125. monitor the bus for data until it receives the 1 from the Output Queue 79 5 Language Reference SRE SRE STB WAI 80 This command sets the condition of the Service Request Enable Register This register determines which bits from the Status Byte Register are allowed to set the Master Status 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 and all such enabled bits then are logically OR ed to cause Bit 6 of the Status Byte Register to be set When the controller conducts a serial poll in response to SRQ the RQS bit is cleared but the MSS bit is not When SRE is cleared by programming it with 0 the power supply cannot generate an SRQ to the controller The query returns the current state of SRE This query reads the Status Byte register which contains the status summary bits and the Output Queue MAV bit Reading the Status Byte register does not clear it The input summary bits are cleared when the appropriate event registers are read The MAV bit is cleared at power on by CLS or when there is no more response data available A serial poll also returns the value of the Status Byte register except that bit 6 returns Request for Service RQS instead of Master Status Summary MSS A serial poll clears RQS but not MSS When MSS is set it indicates that the power supply has one or more reason
126. n Verification procedures are of two types Performance These procedures verify that the power supply is operating normaly and meets all of the published specifications listed in Appendix A These tests also verify the power supply is properly calibrated Calibration These procedures calibrate the power supply and set operation within the published specifications Calibration is recommended annually If the power supply fails any of the verification tests perform the calibration procedures If calibration is unsuccessful return the unit to an Agilent Technologies repair facility see Appendix D Series N8700 User s Guide 97 Appendix B 98 Verification and Calibration Equipment Required Type Digital Voltmeter Current Monitor Load Resistor nominal values Electronic Load GPIB Controller Oscilloscope RMS Voltmeter Differential Amplifier Terminations Variable voltage xfmr or AC source The equipment listed in the following table or the equivalent to this equipment is required for the calibration and performance tests Test records for all models are at the end of this verification section Specifications Resolution 10 nV 1V Readout 8 1 2 digits Accuracy 20 ppm 15A 0 1Q 0 04 TC 4ppm C 100A 0 010 0 04 TC 4ppm C 300A 0 001Q 0 04 TC 4ppm C 500A 0 000502 0 04 TC 4ppm C For 3 3 kW models 0 02 0 030 0 0680 0 12Q 0 270 0 47Q 1 1 1 9 3 09 6 80 27 3Q 109Q a
127. ng a question mark to the command VOLTage VOLTage TRIGgered If a query contains a parameter place the query indicator at the end of the last keyword Observe the following precautions with queries Add a blank space between the query indicator and any subsequent parameter VOLTage TRIGgered MAX Set up the proper number of variables for the returned data Read back all the results of a query before sending another command to the power supply Otherwise a Query Interrupted error will occur and the unreturned data will be lost Common Commands Common commands generally control overall power supply functions such as reset status and synchronization All common commands consist of a three letter mnemonic preceded by an asterisk RST IDN SRE8 You can combine common commands with subsystem commands in the same message Use semicolons to separate the common command from the subsystem commands Common commands do not affect the command path you may insert them anywhere in the message VOLTage TRIGgered 10 INITiate TRG OUTPut OFF RCL 2 OUTPut ON Command Terminators 64 A terminator informs SCPI that it has reached the end of a command Three permitted command terminators are newline lt NL gt which is ASCII decimal 10 or hex 0A end or identify lt END gt both of the above lt NL gt lt END gt In the examples of this guide the message terminator is assumed Series N8700 User s Gu
128. nt This function is enabled or disabled by SW1 setup switches 1 and 2 J1 connector pin 21 is an open collector output that indicates if the power supply is in Local mode or in Analog mode To use this output connect a pull up resistor to a voltage source of 30 VDC maximum Choose the pull up resistor so that the sink current will be less than 5mA when the output is in low state SW1 switch 1 and 2 J1 pin 8 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 47 3 Operating the Power Supply Locally 48 Voltage Programming of Output Voltage and Current CAUTION To maintain the isolation of the power supply and prevent ground loops use an isolated programming source when operating the unit using analog programming Voltage programming sources of 0 5V or 0 10V can be used to program the output voltage and current limit from zero to full scale Set the power supply to analog voltage programming as follows 1 2 Make sure that the power supply is turned off Set SW1 setup switch 1 for voltage and 2 for current to the Up position Set SW1 setup switch 3 to select programming voltage range according to the table following these procedure steps Make sure that SW1 setup switches 7 and 8 are set Down Connect a short between J
129. nt change The voltage is measured before and after the trigger Sub main_Trig Dim IDN As String Dim IOaddress As String Dim ErrString As String Dim msgl As String rm his variable is used to monitor the status Dim stat As Long rm his variable controls the voltage Dim VoltSetting As Double 1 p his variable measures the voltage Dim MeasureVolt As Double This variable controls the current Dim CurrSetting As Double 1 om his variable represents the trigger current setting Dim trigCurrSetting As Double This variable controls the triggered voltage setting Dim trigVoltSetting As Double This constant represents the register value for Waiting for Trigger Const WIG 32 rm hese variables are necessary to initialize the VISA COM Dim ioMgr As AgilentRMLib SRMC1s Dim Instrument As VisaComLib FormattedI0488 The following line provides the VISA name of the GPIB interface IOaddress GPIBO 5 INSTR Use the following line instead for LAN communication TOaddress TCPIP0 141 25 36 214 Use the following line instead for USB communication IOaddress USB0 2391 1799 N8741A US00000002 Initialize the VISA COM communication Set ioMgr New AgilentRMLib SRMC1s Set Instrument New VisaComLib FormattedI0488 Set Instrument IO ioMgr Open IOaddress VoltSetting 3 volts CurrSetting 2 amps trigVoltSetting 5 volts trigCurrSetting 3 amps With Inst
130. nter the old password to Password confirm access Enter the new password in the Enter New field and in the Confirm New field The password can be up to 12 alpha numeric characters letters numbers underscore case insensitive The first character must be a letter If the fields are blank password checking is disabled Series N8700 User s Guide 59 4 Operating the Power Supply Remotely Factory shipped LAN Settings The factory shipped LAN settings documented in the following table are optimized for connecting your power supply to a site network They should also work well for other network configurations The factory shipped settings can be restored by pressing and holding the front panel LAN button for three seconds Pressing the LAN button again while the message LAn rES is displayed resets the LAN settings Factory shipped non volatile LAN settings Get IP Address Automatic Dynamic DNS naming service Enabled IP Address 169 254 57 0 NetBIOS naming service Enabled Subnet Mask 255 255 0 0 Domain name Blank Default Gateway 0 0 0 0 TCP keepalive Enabled Obtain DNS server from DHCP Enabled TCP keepalive seconds 1800 DNS server Blank Ethernet Auto negotiation Enabled Host name A N87xxA xxxxx Ping server Enabled Web password Blank Using the Setup Utility A Setup utility that lets you configure the LAN settings of your instrument is provided on the Product Reference CD ROM included with this manual Install and run this Setup
131. nued Model 3 3kW N8731A N8732A N8733A N8734A N8735A N8736A N8737A N8738A N8739A N8740A N8741A N8742A 5kW N8754A N8755A N8756A N8757A N8758A N8759A N8760A N8761A N8762A Analog Programming and Monitoring Vout voltage 0 100 0 5V or 0 10V user selectable Accuracy amp linearity 0 5 of rated Vout lout voltage 0 100 0 5V or 0 10V user selectable Accuracy amp linearity 1 of rated lout Vout resistance 0 100 0 5kQ or 0 10kQ user selectable Accuracy amp linearity 1 of rated Vout lout resistance 0 100 0 5kQ or 0 10kQ user selectable Accuracy amp linearity 1 5 of rated lout lout monitor 0 5V or 0 10V user selectable Accuracy 1 Vout monitor 0 5V or 0 10V user selectable Accuracy 1 On Off control Electrical voltage 0 0 6V or 2 15V or dry contact user selectable logic PS OK signal TTL high 4 5V OK OV FAIL 500Q series resistance CV CC signal 3 3kW CV TTL high 4 5V source current 10 mA CC TTL low 0 0 6V sink current 10 mA CV CC signal 5kW Open collector CV mode OFF CC mode ON Maximum voltage 30V Maximum sink current 10 mA Enable Disable Dry contact Open Off Short On Maximum voltage at terminal 6V Series and Parallel Capability Parallel operation Up to 4 identical units can be connected in master slave mode with single wire current balancing Series operation Up to 2 identical units can be connected using external protection diodes see Output Terminal I
132. o 600V models nnrorrrrorrorerrvrerrrrerrrrerrnverersererser 25 analog aoea keen 14 AG Abbed 35 S onana 27 multiple load sorvorrrrorrrrerrrerrrrerrrversererseversererseversevenee 29 parallel j jpjjepeopevoeevrevevrevevrevrervevevreververerverersereree 31 sen 13 see 33 CURRENT nnnnnnrosrrssrssrnnrnsrnsrennsresessrssressessensrestensresessessnn 10 current monitoring External 50 current programming accuracy mmsenvorverversersersersrssrrsnr 103 current readback accuraCy imcssesesees 103 current Shunt siie 99 CV CC Crossover nnsrssrnsrvsrssvnsersressresresressresressesreseessenn 41 GV EG signals 41 141 Index DC AMPS irrrrrrrvrrrerrrserrrserersersrsersrserseserssserseserseserssserssserseser DC VOLFS iinan a Default Gateway device Clear nuntessunesesdseneslensst distribution Donn 2 59 E electronic load norevrvrvrvrerevererereverrerereverrrreseveverresesevevernen 99 enable disable terminals r rcscorvrrrvrerevrverevrrrvsererererner 45 environmental conditions uuu cesses 17 94 ER 80 error MESSAGES rmennervrverververserserserrvervevsrsersersersersensessener 132 ES gt EE 80 F POGUES niesen 8 FINE 11 front panel locking orronrrrrrrrrorvrververversrversersersersrssnnen 43 functions minvevvvmvvvvinenivnenseirvee 9 G GPIB address iscrrvrvrvrerereverrvrerereverevrvrverreseseveverresesevevernen 52 GPIB interface 52 GroUnding POENOS 17
133. o peak N A 60 mV rms N A 8 mV Transient Response Voltage 1 ms 75 mV 75 mV Current Programming amp Readback Minimum Current lout 0 mA 1 32 A Measurement Readback lout 660 mA lout 660 mA High Current lout 219 34 A 220 66 A Measurement Readback lout 880 mA lout 880 mA CC Load Effect 49 mA 49 mA CC Source Effect 24 mA 24 mA Test Description N8733A Settings Voltage Programming amp Readback Min Voltage lt 30 mV 880 mA Voltage Programming amp Readback High Voltage 15V 880 mA CV Load Effect Source Effect Ripple and Noise 15V 220A Transient Response 15V from 22A to 198A Current Programming amp Readback Min Current 880 mA 15V Current Programming amp Readback High Current 220A 15V CC Load Effect Source Effect 220A 15V N8733A Load Requirements Current shunt 0 001Q 300A Agilent N3300 Electronic load modules 6 N3306A Fixed Resistor for CV Ripple and Noise 0 0682 3 5 kw Series N8700 User s Guide 107 Appendix B Verification and Calibration 108 Test Record Agilent N8734A 20V 165A 3 3kW Agilent N8734A Report No Date Description Minimum Specs Results Maximum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV 50 mV Measurement Readback Vout 20 mV Vout 20 mV High Voltage Vout 19 98 V 20 02 V Measurement Readback Vout 40 mV Vout 40 mV CV Load Effect 8mV 8 mV CV Source Effect 4mV 4mV CV Ripple and Noise peak to peak N A 60 mV rms N A 8 m
134. oltage in volts Series N8700 User s Guide 71 5 Language Reference Output Commands Output commands enable the output power on and protection functions OUTPut STATe ON OFF OUTPut STATe This command enables or disables the specified output s The enabled state is On 1 the disabled state is Off 0 The state of a disabled output is a condition of zero output voltage and a zero source current see RST The query returns 0 if the output is off and 1 if the output is on The RST value Off OUTPut PON STATe RST AUTO OUTPut PON STATe This command determines if the power on state will be determined by the reset state or the settings the unit had when it was turned off RST programs the unit to the reset state AUTO programs the unit to the settings it had when it was turned off The power on state information is saved on non volatile memory Refer to RST and RCL under System Commands for details OUTPut PROTection CLEar 72 This command clears the latched signals that have disabled the output The over voltage and over current conditions are always latching The over temperature condition AC fail condition Enable pins and SO pins are latching if OUTPut PON STATe is RST and non latching if 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
135. omplete Return option number Recalls a saved instrument state Reset Saves an instrument state Set service request enable register Return service request enable register Return status byte Trigger Performs self test then returns result Holds off bus until all device commands done 5 Language Reference Calibration Commands Calibration commands let you enable and disable the calibration mode change the calibration password calibrate current and voltage programming and store new calibration constants in nonvolatile memory If calibration mode has not been enabled with CALibrate STATe the calibration commands will generate an error CALibrate CURRent LEVel This command initiates the calibration of the output current CALibrate DATA lt value gt This command enters a calibration value that you obtain by reading an external meter You must first select a calibration level with CALibrate LEVel for the value being entered Data values are entered in either volts or amperes depending on which function is being calibrated CALibrate DATE lt date gt CALibrate DATE This command stores the date the unit was last calibrated The data must be of the numeric format yyyy mm dd where yyyy indicates the year mm indicates the month and dd indicates the day The query returns the date CALibrate LEVel P1 P2 This command selects the next point in the calibration sequence P1 is the first calibration po
136. on Enable IN Enable OUT Shut Off Power Supply OK The factory shipped default configuration is Local operation which does not require connection to J1 Connect Pin 1 to Pin 14 to enable the output Disconnect to disable the output Signal return for Pin 15 and Pin 16 Connected to chassis No connection Input for selecting between front panel or analog programming of the output Input for voltage or resistance programming of the output voltage Input for voltage or resistance programming of the output current Output for monitoring the output voltage Signal return for Pin 8 Pin11 Pin 13 and Pin 24 Connected internally to S Output for constant voltage constant current mode indication Connect Pin 14 to Pin 1 to enable the output Disconnect to disable the output Input for Shut Off control of the output Referenced to Chassis Common Output to indicate the power supply status Referenced to Chassis Common No connection Output for indication of local or analog programming mode Signal return for Pin 9 Connected internally to S Signal return for Pin 10 Connected internally to S Output for monitoring the output current Output for current balancing in parallel operation Series N8700 User s Guide Series N8700 User s Guide 2 Installation General Infom k n cvccv umssesadssmarssaaaastkenadomsanmn 16 inspecting the Unit hj u eseesssanendusnmeenaennnnnansubenssandnner 16 fre EEE 17 Connechng t
137. ote interfaces is included in the USB LAN GPIB Interfaces Connectivity Guide document located on the Automation Ready CD ROM included with this product Series N8700 User s Guide This chapter also contains a brief introduction to the SCPI Programming language SCPI Standard Commands for Programmable Instruments is a programming language for controlling instrument functions over the GPIB SCPI is layered on top of the hardware portion of IEEE 488 2 The same SCPI commands and parameters control the same functions in different classes of instruments 51 4 Operating the Power Supply Remotely Connecting to the Interfaces The Agilent N8700 power supplies support remote interface communication using a choice of three interfaces GPIB USB and LAN All three interfaces are live at power on GPIB Interface For detailed information about GPIB interface connections refer to the Agilent Technologies USB LAN GPIB Interfaces Connectivity Guide located on the Automation Ready CD ROM that is shipped with your product The following steps will help you quickly get started connecting your instrument to the General Purpose Interface Bus GPIB The following figure illustrates a typical GPIB interface system GPIB Cable Wl EG Instrument iss M TI m Mi Instrument Connect to GPIB Interface Connect to GPIB Card installed in PC port on instrument 1 If
138. pecs 0 mV Vout 60 mV 59 94 V Vout 120 mV 14 mV 8mvV N A N A 300 mV 0 mA lout 165 mA 54 835 A lout 220 mA 16 mA 7 5 mA Date Results Maximum Specs 150 mV Vout 60 mV 60 06 V Vout 120 mV 14 mV 8 mV 60 mV 8 mV 300 mV 330 mA lout 165 mA 55 165 A lout 220 mA 16 mA 7 5 mA Test Description N8737A Settings Voltage Programming amp Readback Min Voltage Voltage Programming amp Readback High Voltage CV Load Effect Source Effect Ripple and Noise Transient Response Current Programming amp Readback Min Current Current Programming amp Readback High Current CC Load Effect Source Effect N8737A Load Requirements lt 120 mV 220 mA 60V 220 mA 60V 55A 60V from 5 5A to 49 5A 220 mA 60V 55A 60V 55A 60V Current shunt Agilent N3300 Electronic load modules Fixed Resistor for CV Ripple and Noise Series N8700 User s Guide 0 01Q 100 A 6 N3306A 1 1Q 3 5 kW 111 Appendix B Verification and Calibration 112 Test Record Agilent N8738A 80V 42A 3 3kW Agilent N8738A Report No Date Description Minimum Specs Results Maximum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV 200 mV Measurement Readback Vout 80 mV Vout 80 mV High Voltage Vout 79 92 V 80 08 V Measurement Readback Vout 160 mV Vout 160 mV CV Load Effect 17 mV 17 mV CV Source Effect 10 mV 10 mV
139. pple and Noise peak to peak N A 100 mV rms N A 25 mV Transient Response Voltage 2 ms 750 mV 750 mV Current Programming amp Readback Minimum Current lout 0 mA 132 mA Measurement Readback lout 66 mA lout 66 mA High Current lout 21 934 A 22 066 A Measurement Readback lout 88 mA lout 88 mA CC Load Effect 9 4 mA 9 4 mA CC Source Effect 4 2 mA 42 mA Test Description N8740A Settings Voltage Programming amp Readback Min Voltage lt 300 mV 88 mA Voltage Programming amp Readback High Voltage 150V 88 mA CV Load Effect Source Effect Ripple and Noise 150V 22A Transient Response 150V from 2 2A to 19 8A Current Programming amp Readback Min Current 88 mA 150V Current Programming amp Readback High Current 22A 150V CC Load Effect Source Effect 22A 150V N8740A Load Requirements Current shunt 0 012 100A Agilent N3300 Electronic load modules 7 N3305A Fixed Resistor for CV Ripple and Noise 6 8Q 3 5 kW Series N8700 User s Guide Verification and Calibration Appendix B Test Record Agilent N8741A 300V 11A 3 3kW Agilent N8741A Report No Date Description Minimum Specs Results Maximum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV 750 mV Measurement Readback Vout 300 mV Vout 300 mV High Voltage Vout 299 7 V 300 3 V Measurement Readback Vout 600 mV Vout 600 mV CV Load Effect 50 mV a 50 mV CV Source Effect 32 mV 32 mV CV Ripple and Noise peak to
140. pressing the OUT ON button The green OUT ON indicator should be illuminated The green CC indicator should be also illuminated Rotate the current knob while observing the DC AMPS display The output current should vary while the knob is turned The current range is from zero to the maximum rated output for the power supply model Rotate the current knob and set the current limit of the unit to about 10 of its full scale current rating Press the OCP 488 button This should trip the OCP protection The OCP indicator should be illuminated the DC VOLTS display should indicate OCP and the Alarm indicator should be blinking Press the OCP 488 button again to cancel OCP protection The DC VOLTS display should indicate OFF because the OCP protection is latched 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 39 3 Operating the Power Supply Locally Normal Operation The power supply has two basic operating modes constant voltage and constant current mode In constant voltage mode the power supply regulates the output voltage at the selected value while the load current varies as required by the load In constant current mode the power supply regulates the output current at the selected value while the voltage varies as required by the load The mode in which the power supply operates at any gi
141. provide up to two times the output voltage capability Because the current is the same through each element in a series circuit outputs connected in series must have equivalent current ratings Otherwise the higher rated output could potentially damage the lower rated output by forcing excessive current through it under certain load conditions Refer to the following figures for typical series connections using either local or remote sensing 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 33 2 Installation LS SL LS S POWER SUPPLY POWER SUPPLY LS 5 LS S Diodes are POWER user supplied SUPPLY LS 5 Local Sensing Remote Sensing Refer to the following figure for typical connections of series power supplies configured as a positive and a negative output LS S POWER SUPPLY SUPPLY LS_ S CAUTION This caution applies when using analog voltage programming with series connected power supplies The analog programming circuits of these power supplies are referenced to the negative sense S potential Therefore the analog voltage circuits used to control each series connected unit must be separated and floated from each other 34 Series N8700 User s Guide Installation 2
142. r 3 3kW outputs use the indicated load resistor for 5kW outputs 2 As shown in the diagram use two BNC cables to connect the differential amplifier to the and output terminals Each cable should be terminated by a 50 resistor The shields of the two BNC cables should be connected together Connect the output of the differential amplifier to the oscilloscope with a 50 Q termination at the input of the oscilloscope 3 Set the differential amplifier to multiply by ten divide by one and 1 Megohm input resistance The positive and negative inputs of the differential amplifier should be set to 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 101 Appendix B Verification and Calibration 102 4 Program the power supply to program the output current to its maximum programmable value Imax and the output voltage to its full scale value and enable the output Let the oscilloscope run for a few seconds to generate enough measurement points On the Agilent Infiniium scope the maximum peak to peak voltage measurement is indicated at the bottom of the screen on the right side Divide this value by 10 to get the CV peak to peak noise measurement The result should not exceed the peak to peak limits in the test record form for the appropriate model under CV Ripple and Noise peak to peak If the mea
143. r a numeric parameter Suffix too long The suffix contains more than 12 characters Suffix not allowed A suffix is not supported for this command Character data error Generic character data error Series N8700 User s Guide 133 Appendix C Service 134 141 144 148 150 151 158 160 161 168 170 171 178 200 220 221 222 223 224 225 226 230 Command Errors continued Invalid character data Either the character data element contains an invalid character or the element is not valid Character data too long The character data element contains more than 12 characters Character data not allowed A discrete parameter was received but a string or numeric parameter was expected String data error Generic string data error Invalid string data An invalid character string was received Check that the string is enclosed in quotation marks String data not allowed A character string was received but is not allowed for this command Block data error Generic block data error Invalid block data The number of data bytes sent does not match the number of bytes specified in the header Block data not allowed Data was sent in arbitrary block format but is not allowed for this command Expression error Generic expression error Invalid expression data The expression data element was invalid Expression
144. rce Effect 2 8 mV 2 8 mV CV Ripple and Noise peak to peak N A 60 mV rms N A g r 8 mV Transient Response Voltage 1 ms 40 mV 40 mV Current Programming amp Readback Minimum Current lout 0 mA 24A Measurement Readback lout 1 2 A lout 1 2 A High Current lout 398 8 A 401 2 A Measurement Readback lout 1 6 A lout 1 6 A CC Load Effect 85 mA 85 mA CC Source Effect 42 mA 42 mA Test Description N8731A Settings Voltage Programming amp Readback Min Voltage lt 16 mV 1 6A Voltage Programming amp Readback High Voltage 8V 1 6A CV Load Effect Source Effect Ripple and Noise 8V 400A Transient Response 8V from 40A to 360A Current Programming amp Readback Min Current 1 6A 8V Current Programming amp Readback High Current 400A 8V CC Load Effect Source Effect 400A 8V N8731A Load Requirements Current shunt Agilent N3300 Electronic load modules Fixed Resistor for CV Ripple and Noise Series N8700 User s Guide 0 0005Q 500 A 6 N3306A 0 02Q 3 5 kW 105 Appendix B Verification and Calibration 106 Test Record Agilent N8732A 10V 330A 3 3kW Agilent N8732A Report No Date Description Minimum Specs Results Maximum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV 25 mV Measurement Readback Vout 10 mV Vout 10 mV High Voltage Vout 9 990 V 10 010 V Measurement Readback Vout 20 mV Vout 20 mV CV Load Effect 6 5 mV 6 5 mV CV Source Effect 3mv 3
145. restricted If a password has subsequently been set you must enter the correct password otherwise an error will occur Once calibration has been entered the password can be changed by the user You do not have to do a complete calibration If appropriate you may calibrate only the voltage or current functions and then save the calibration constants You can also save the date when the calibration was preformed see CAL DATE lt date gt As each calibration sequence is completed the instrument saves the calibration constants and begins using them Exit the calibration mode Note that a Reset command RST also sets the calibration state to OFF Calibration Procedure Unless instructed otherwise connect the sense terminal to the output and the sense terminal to the output When calibrating the unit using SCPI commands most calibration steps involve sending an OPC query to synchronize with the power supply s command completion before proceeding The response from the instrument must be read each time OPC is given The CAL LEV and CAL DATA commands may take several seconds to complete If a timeout occurs in your VISA application you may need to change the VI ATTR TMO VALUE in the ViSetAttribute function Step 1 Step 2 Step 3 Step 4 Voltage Programming and Measurement Calibration Connect the Agilent 3458A voltage input to the output Enable voltage calibration mode RST OUTP ON CAL S
146. round wire is 10 mm 0 4 in longer than the other wires Strip 10 mm 0 4 in at the end of each of the wires Unscrew the base of the strain relief from the wire compression nut Place the locknut inside the AC input cover with the flat side of the nut against the cover Insert the base through the outside opening of the AC input cover Screw the base securely onto the locknut from the outside Tighteming torque 17 ft lb 23 Nm Slide the wire compression nut over the AC cable Insert the stripped wires through the strain relief base until the outer cable jacket is flush with the inside edge of the base Place a wrench on the base to keep it from turning Now tighten the compression nut to the base while holding the cable in place 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 21 2 Installation 4 Route the AC wires to the input connector terminals as required To connect the wires loosen the terminal screw insert the stripped wire into the terminal and tighten the screws securely as indicated in the following figures Ensure that you have the green yellow ground conductor connected to the ground terminal on the connector Plug the connector onto the rear panel header and secure it with the side screws Screw tightening torque 10 7 13 4 in lb 1 2 1 5 Nm AA or Plug Type PC 6 4 STF 10
147. rrent to its full scale value and the output voltage to its maximum programmable value Vmax 5 With the electronic load in CV mode set it for the output s full scale voltage The CC annunciator on the front panel must be on If it is not adjust the load so that the voltage drops slightly 6 Adjust the transformer to the lowest rated line voltage 170 VAC for 200 nominal line 342 VAC for 400 nominal line 7 Divide the voltage drop DVM reading across the current monitoring resistor by its resistance to convert to amps and record this value lout 8 Adjust the transformer to the highest rated line voltage 265 VAC for 200 nominal line 460 VAC for 400 nominal line 9 Divide the voltage drop DVM reading across the current shunt by its resistance to convert to amps and record this value Tout The difference between the DVM reading in steps 6 and 8 is the source effect which should not exceed the value listed in the test record for the appropriate model under CC Source Effect 104 Series N8700 User s Guide Verification and Calibration Appendix B Test Record Agilent N8731A 8V 400A 3 3kW Agilent N8731A Report No Date Description Minimum Specs Results Maximum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV 20 mV Measurement Readback Vout 8 mV Vout 8 mV High Voltage Vout 7 992 V 8 008 V Measurement Readback Vout 16 mV Vout 16 mV CV Load Effect 6 2 mV 6 2 mV CV Sou
148. rsersssersrserersen subsystem commands onornrnrvorororrrnrvererernvererrnrverennn SIV GS support railS sooooororororrrrrrerororvrrererrrererororrrererererrrneverensn SW1 switCh ssservrvrevrvverrorerroserrrsvrererseversererseversesenee system commandS rsrorvovorornrnrvererersrnrvererersrnrverennverensn SYST COMM RLST nnrnrrrrrrrrrrrserserversersersersersererserserner SYST COMM TCP CONT SYST ERR eseeeseeseeeeee 143 Index trigger programming exaMple cccccsceseeseseeseeseeseeees 88 turn on check Ut ee eeeeeseeceecseesseeeeeseeeseeeeeseeeetesteeeeeeeees 38 U M AEE EE E EE E E E E E ee 11 under voltage check eosorrrnrrrsorrrsrrververversersersersessrssnn 39 under voltage limit o enrrrrrrorrorerrrrrrververversersersersersrnsnn 42 USB ID Sting scscctuec eee eee 53 USB interface cceeceececseccesseeseesseeseeseeeeeseeeseeeneeeeeeeeees 53 VU teens letes 11 NE 11 V verification omeerevsrvsmsssree 97 144 verification equipment o onsnvrnrrvrrrvrrsrvrverrrverseverseversenene 98 VOLTAGE sneile 10 voltage monitoring external ssiusvsvmvsevmssrseis 50 voltage programming ACCULACY c secseeseeseeseeseeseeseees 100 voltage readback accuracy nrernrrrvrrververversersersrssrssnne 100 voltage SENSING cccccsseseessesessessessessessessescssssteseeseeseeseeneeess 27 W WANING es 3 Web SQ1ve nt cscs a EE 56 web URL S
149. rument Send a power reset to the instrument WriteString RST Query the instrument for the IDN string WriteString IDN IDN ReadString 88 Series N8700 User s Guide Programming Examples 6 Set the voltage WriteString VOLT amp Str VoltSetting the current level eString CURR amp Str CurrSetting FR gt the triggered voltage and current levels eString VOLT TRIG amp Str trigVoltSetting WriteString CURR TRIG amp Str trigCurrSetting Turn the output on WriteString OUTP ON Make sure that the output is on WriteString OPC ReadString Measure the voltage before triggering the change WriteString MEAS VOLT MeasureVolt ReadNumber Save the value for later display msgl Voltage before trigger amp Str S MeasureVolt Initiate the trigger system WriteString INIT Make sure that the trigger system is initiated Do WriteString STAT OPER COND stat ReadNumber Loop Until stat And WTG WTG Trigger the unit WriteString TRG Make sure that the trigger is done WriteString OPC ReadString Measure the voltage after triggering the change WriteString MEAS VOLT MeasureVolt ReadNumber Display the measured values MsgBox msgl Chr 13 Voltage after trigger amp Str MeasureVolt Check instrument for any errors WriteString Syst err ErrString R
150. s Subsystem commands perform specific power supply functions portion of the SOURce subsystem is shown below to illustrate the tree system SOURce CURRent LEVel IMMediate lt NRf gt TRIGgered lt NRf gt PROTection STATe lt Bool gt SOURee is the root keyword of the command CURRent is a second level keyword LEVel and PROTection are third level keywords and IMMediate TRIGgered and STATe are fourth level keywords Colons separate higher level from lower level keywords The following command syntax is used in this manual Items within square brackets are optional The representation SOURce VOLTage means that SOURce may be omitted Items within angle brackets are parameter descriptions For example lt NR1 gt indicates a specific form of numerical data Vertical bars separate alternative parameters For example VOLT CURR indicates that either VOLT or CURR can be used as a parameter The syntax characters cannot be included in the command string Multiple Commands in a Message Multiple SCPI commands can be combined and sent as a single message with one message terminator There are two important considerations when sending several commands within a single message Use a semicolon to separate commands within a message There is an implied path that affects how commands are interpreted by the power supply The command path can be thought of as a string that gets inserted before eac
151. s 5th through the 9th character of the 10 character serial number located on the label on the side of the unit Domain This field registers the Internet domain for the instrument The Domain must start with a letter and may contain upper and lower case letters numbers dashes and dots Description This field lets you assign a user friendly name to the instrument This name is used as the title of the instrument s Web home page LAN This value sets the LAN keepalive in seconds The instrument uses the LAN Keepalive keepalive timer to determine if a client is still reachable If there has been no Timeout activity on the connection after the specified time the instrument will send keepalive probes to the client to determine if it is still alive If not the connection will be marked as down or dropped The instrument will release any resources that were allocated to that client When setting this parameter it is recommended that the largest value be used that still meets the application s need for unreachable client detection Smaller keepalive timeout values will generate more keepalive probes network traffic using more of the available network bandwidth Check the Enable box to enable the LAN Keepalive function Allowed values 720 99999 seconds GPIB Address This field shows the instrument s GPIB bus address The GPIB address can be configured using the instrument s front panel Change This field lets you change the Web password E
152. s for requesting service Bit Position 7 6 5 4 3 2 1 0 Bit Value 128 64 32 16 8 4 Bit Name OPER MSS ESB MAV QUES ERR ROS OPER Operation status summary MAV Message available MSS Master status summary QUES Questionable status summary ROS Request for service ERR Error queue not empty ESB Event status byte summary 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 Language Reference 5 System Commands System commands control system functions that are not directly related to output control measurement or status functions Common commands are also used to control system functions SYSTem COMMunicate RLSTate LOCal REMote RWLock SYSTem COMMunicate RLSTate This command configures the remote local state of the instrument according to the following settings LOCal The instrument is set to front panel control front panel keys are active REMote The instrument is set to remote interface control front panel keys are active RWLock The front panel keys are disabled the instrument can only be controlled via the remote interface The remote local state can also be set by interface commands over the GPIB and some other I O interfaces When multiple remote programming interfaces
153. s programmed by the front panel The output current is programmed by the external voltage signal The remote programming range is 0 5V 0 5K0 The remote programming range is 0 10V 0 10KQ The remote monitoring range is 0 5V The remote monitoring range is 0 10V OUT OFF Low 0 0 6V or short OUT ON High 2V 15V or open OUT OFF High 2V 15V or open OUT ON Low 0 0 6V or short The output voltage is programmed by the front panel The output voltage is programmed by the external resistor The output current is programmed by the front panel The output current is programmed by the external resistor The J1 Enable Enable pins are not active The J1 Enable Enable pins are active 13 Quick Reference Pin1 Pin 2 3 Pin 4 7 Pin 8 Pin 9 Pin 10 Pin 11 Pin 12 Pin 13 Pin 14 Pin 15 Pin 16 Pin 17 20 Pin 21 Pin 22 Pin 23 Pin 24 Pin 25 14 J1 Analog Programming Connector Voltage Monitor Common S cv cc Parallel Current Monitor Current Prog Return Voltage Prog Return Local Analog State Enable IN Chassis Common Not Used Local Analog Voltage Program Current Program Voltage Monitor Common CV CC Enable OUT Shut Off Power Supply OK Not Used Local Analog State Voltage Prog Return Current Prog Return Current Monitor Parallel Current Program Voltage Program Local Analog Chassis Common Chassis Comm
154. same local subnet When a client IP address is on a different subnet all packets must be sent to the Default Gateway Default This value is the IP Address of the default gateway that allows the instrument Gateway to communicate with systems that are not on the local subnet as determined by the subnet mask setting DNS DNS is an internet service that translates domain names into IP addresses This parameter indicates whether the IP address of the Domain Name System DNS server is obtained automatically or manually Auto obtains the DNS server address from DHCP Manual uses the DNS server in the following field DNS Server This value is the address of the Domain Name System DNS server If DHCP is disabled the DNS server parameter is needed for the instrument to be able to find and display its hostname Naming This parameter specifies the Naming service if any to be used to register the Service instrument NetBIOS indicates the instrument will be registered using the RFC NetBIOS naming protocol Dynamic DNS indicates the instrument will be registered using the Dynamic DNS naming system Host Name This field registers the supplied name with the selected naming service If the field is blank no name is registered A hostname may contain upper and lower case letters numbers and dashes The maximum length is 15 characters The format is A modelnumber serialnumber Modelnumber is the instrument s 6 character model number and serialnumber i
155. se Voltage 1 ms 150 mV N A N A Date Results Maximum Specs 82 5 mV Vout 37 5 mV 30 03 V Vout 45 mV 9 5 mV 3mV 75 mV 10 mV 150 mV Current Programming amp Readback Minimum Current lout 0 mA lout 510 mA High Current lout 169 32 A lout 680 mA CC Load Effect 170 mA CC Source Effect 85 mA Measurement Readback Measurement Readback 1 19A lout 510 mA 170 68 A lout 680 mA 170 mA 85 mA Test Description N8755A Settings Voltage Programming amp Readback Min Voltage Voltage Programming amp Readback High Voltage CV Load Effect Source Effect Ripple and Noise Transient Response Current Programming amp Readback Min Current Current Programming amp Readback High Current CC Load Effect Source Effect N8755A Load Requirements lt 45 mV 680 mA 30V 680 mA 30V 170A 30V from 17A to 153A 680 mA 30V 170A 30V 170A 30V Current shunt Agilent N3300 Electronic load modules Fixed Resistor for CV Ripple and Noise 0 0012 300 A 9 N3306A 0 1762 5 5 kW Series N8700 User s Guide Verification and Calibration Appendix B Test Record Agilent N8756A 40V 125A 5SkW Agilent N8756A Report No Date Description Minimum Specs Results Maximum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV 110 mV Measurement Readback Vout 50 mV Vout 50 mV High Voltage Vout 39 96 V 40 04 V Measurement Readbac
156. should be greater than the power supply maximum output voltage and current rating Connect the cathode to the positive output and the anode to the negative output of the power supply Where positive load transients such as back EMF from a motor may occur connect a surge suppressor across the output to protect the power supply The breakdown voltage rating of the suppressor must be approximately 10 higher than the maximum output voltage of the power supply Battery Charging CAUTION If a battery or external voltage source is connected across the output and the output is programmed below the battery or external voltage source the power supply will continuously sink current from the external source This could damage the power supply To avoid damaging the power supply insert a reverse blocking diode in series with the 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 Installation 2 Grounding the Output The output of the power supply is isolated from earth ground Either positive or negative voltages can be obtained from the output by grounding or commoning one of the output terminals Always use two wires to connect the load to the output regardless of where or how the system is grounded To avoid noise problems caused by common mode current flowing
157. solation Savable states In volatile memory 16 in memory locations 0 15 Interface Capabilities GPIB SCPI 1993 IEEE 488 2 compliant interface LXI Compliance Class C only applies to units with the LXI label on the front panel USB 2 0 Requires Agilent 10 Library version M 01 01 and up or 14 0 and up 10 100 LAN Requires Agilent IO Library version L 01 01 and up or 14 0 and up Environmental Conditions Environment Indoor use installation category II AC input pollution degree 2 Operating temp 0 C to 40 C 100 load Storage temp 20 C to 85 C Operating humidity Up to 90 relative humidity no condensation Storage humidity 10 to 95 relative humidity no condensation Altitude Up to 3000 meters Above 2000m derate the output current by 2 100m and derate the maximum ambient temperature by 1 C 100m Built in Web server Requires Internet Explorer 5 or Netscape 6 2 Output Terminal Isolation 8V to 60V units No output terminal may be more than 60 VDC from any other terminal or chassis ground 80V to 600V units No Positive output terminal may be more than 600 VDC from any other terminal or chassis ground No Negative output terminal may be more than 400 VDC from any other terminal or chassis ground Acoustic Noise Declaration Statements provided to comply with requirements of the German Sound Emission Directive from 18 January 1991 Sound Pressure Lp lt 70 dB A At Operator Position Normal
158. sponse 150 mV Voltage 1 ms 150 mV Current Programming amp Readback Minimum Current lout 0 mA 660 mA lout 330 mA lout 330 mA 109 67 A 110 33 A lout 440 mA lout 440 mA Measurement Readback High Current lout Measurement Readback CC Load Effect 27 mA 27 mA GC Source Effect 13 mA 13 mA Test Description N8735A Settings Voltage Programming amp Readback Min Voltage Voltage Programming amp Readback High Voltage CV Load Effect Source Effect Ripple and Noise Transient Response Current Programming amp Readback Min Current Current Programming amp Readback High Current CC Load Effect Source Effect N8735A Load Requirements lt 60 mV 440 mA 30V 440 mA 30V 110A 30V from 11A to 99A 440 mA 30V 110A 30V 110A 30V Current shunt Agilent N3300 Electronic load modules Fixed Resistor for CV Ripple and Noise Series N8700 User s Guide 0 010 100 A 6 N3306A 0 272 3 5 kw 109 Appendix B Verification and Calibration 110 Test Record Agilent N8736A 40V 85A 3 3kW Agilent N8736A Report No Date Description Minimum Specs Results Maximum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV 100 mV Measurement Readback Vout 40 mV Vout 40 mV High Voltage Vout 39 96 V 40 04 V Measurement Readback Vout 80 mV Vout 80 mV CV Load Effect 11 mV 11 mV CV Source Effect 6 mV 6 mV CV Ripple and Noise peak to peak N A 60 mV rms N
159. ster to be set Ifthe same bits in both NTR and PTR registers are set to 1 then any transition of that bit at the Operation Condition register sets the corresponding bit in the Operation Event register Ifthe same bits in both NTR and PTR registers are set to 0 then no transition of that bit at the Operation Condition register can set the corresponding bit in the Operation Event register The Preset value are NTR 0 PTR 32767 STATus QUEStionable EVENt This query returns the value of the Questionable Event register The Event register is a read only register which stores latches all events that are passed by the Questionable NTR and or PTR filter Reading the Questionable Event register clears it The bit configuration of the Questionable status registers is as follows Bit Position 15 11 10 9 8 5 4 3 2 1 0 Bit Value 1024 512 16 4 2 1 Bit Name z UNR INH OT PF OC OV UNR The output is unregulated INH The output is turned off by one of the external J1 inhibit signals OT The output is disabled by the over temperature protection PF The output is disabled because AC power has failed OC The output is disabled by the over current protection OV The output is disabled by the over voltage protection STATus QUEStionable CONDition Series N8700 User s Guide This query returns the value of the Questionable Condition register That is a read only register which holds the real time unlatched quest
160. supply is turned off 2 Set SW1 setup switch 1 for voltage and 2 for current to the UP position 3 Set SW1 setup switch 3 to select programming resistance range according to the table following these procedure steps 4 Set SW1 setup switch 7 for voltage and 8 for current to the Up position to enable resistance programming 5 Connect a short between J1 pin 8 and J1 pin 12 see figure Connect the programming resistors to the mating plug of J1 as shown in the following figure A variable resistor can control the output over its entire range or a combination of variable resistor and series parallel resistors can control the output over a restricted portion of its range 7 Set the programming resistors to the desired resistance and turn the power supply on Adjust the resistors to change the power supply output The analog control circuits let you set the output voltage and current limit up to 5 over the model rated maximum value The power supply will operate within the extended range however it is not recommended to operate the power supply over its voltage and current rating and performance in this region is not guaranteed SW1 switch 3 Voltage Programming Current programming J1 pin 9 J1 pin 10 Down default 0 5kO 0 5K0 Up 0 10k0 0 10 kO CURRENT LIMIT OUTPUT VOLTAGE PROGRAMMING PROGRAMMING PROGRAMMING PROGRAMMING RESISTOR RESISTOR OPTIONAL SETS OPTIONAL SETS LOWER LIMIT LOWER LIMIT OPTIONAL SETS
161. surement contains any question marks clear the measurement and try again This means that some of the data received by the scope was questionable 5 Disconnect the oscilloscope and connect an ac rms voltmeter in its place Do not disconnect the 50 Q termination Divide the reading of the rms voltmeter by 10 The result should not exceed the rms limits in the test record for the appropriate model under CV Ripple and Noise rms Transient Recovery Time Test category performance This measures the time for the output voltage to recover to within the specified value following a 10 to 90 change in the load current 6 Turn off the power supply and connect the output as in figure A with the oscilloscope across the S and S terminals 7 Turn on the power supply and program the output current to its maximum programmable value Imax and the output voltage to its full scale value Do not program voltages greater than 200 VDC when testing the 300 and 600 volt models 8 Set the electronic load to operate in constant current mode Program its load current to 10 of the power supply s full scale current value 9 Set the electronic load s transient generator frequency to 100 Hz and its duty cycle to 50 10 Program the load s transient current level to 90 of the power supply s full scale current value Turn the transient generator on 11 Adjust the oscilloscope for a waveform similar to that shown in the following figure 12 The outpu
162. t 120 mV CV Load Effect 17 mV 17 mV CV Source Effect 8mV 8 mV CV Ripple and Noise peak to peak N A 100 mV rms N A 15 mV Transient Response Voltage 1 ms 400 mV 400 mV Current Programming amp Readback Minimum Current lout 0 mA 455 mA Measurement Readback lout 195 mA lout 195 mA High Current lout 79 74 A 80 26 A Measurement Readback lout 260 mA lout 260 mA CC Load Effect 65 mA 65 mA CC Source Effect 32 5 mA 32 5 mA Test Description N8758A Settings Voltage Programming amp Readback Min Voltage lt 120 mV 260 mA Voltage Programming amp Readback High Voltage 80V 260 mA CV Load Effect Source Effect Ripple and Noise 80V 65A Transient Response 80V from 6 5A to 58 5A Current Programming amp Readback Min Current 260 mA 80V Current Programming amp Readback High Current 65A 80V CC Load Effect Source Effect 65A 80V N8758A Load Requirements Current shunt 0 0102 100A Agilent N3300 Electronic load modules 11 N3305A Fixed Resistor for CV Ripple and Noise 1 23Q 5 5 kW Series N8700 User s Guide 121 Appendix B Verification and Calibration 122 Test Record Agilent N8759A 100V 50A 5SkW Agilent N8759A Report No Date Description Minimum Specs Results Maximum Specs Voltage Programming amp Readback Minimum Voltage Vout 0 mV 275 mV Measurement Readback Vout 125 mV Vout 125 mV High Voltage Vout 99 9 V 100 1 V Measurement Readback Vout 150 mV Vout 150 mV C
163. t setting the power supply will only attempt to limit the current at the current limit setting Series N8700 User s Guide Operating the Power Supply Locally 3 Over Temperature Protection The over temperature protection circuit shuts down the power supply before the internal components can exceed their safe internal operating temperature This can occur if there is a cooling fan failure When an OTP condition occurs the output is disabled the display shows O7P the PROT indicator blinks and the OT status bit is set in the Questionable Condition status register Resetting the OTP circuit can be automatic non latched or manual latched depending on the Safe Start or Auto Restart mode In Safe Start mode the OTP circuit is latched The display continues to show O7P and the PROT indicator continues to blink To reset the OTP circuit press the OUT ON button In Auto Restart mode the OTP circuit is non latched The power supply returns to its last setting automatically when the over temperature condition is removed Power Fail Protection If the AC power stops briefly but returns before the power supply has reset the power fail protection circuit trips and the PF status bit is set in the Questionable Condition status register Resetting the power fail protection can be automatic non latched or manual latched depending on the Safe Start or Auto Restart mode In Safe Start mode the output of the power supply is Off as speci
164. t the load and its connections have no accessible live parts Ensure that the load wiring insulation rating is greater than or equal to the maximum output voltage of the power supply CAUTION Ensure that the load wiring mounting hardware does not short the output terminals Heavy connecting cables must have some form of strain relief to prevent loosening the connections or bending the bus bars 1 As shown in the following figure all load wires should be properly terminated with wire terminal lugs securely attached DO NOT use unterminated wires for load connections at the power supply Attach the wire terminals to the inside of the bus bars to ensure enough space for installing the shield M10 x 25 bolt cL om Wire Lug Paralleled wire lugs Flat washers washer 2 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 Installation 2 appropriate cut outs for the larger sized wires as indicated in the following figure Secure the shield using the tab on the left side and the M3 x 8mm flat head screw on the right side Screw tightening torque 4 8 5 3 in lb 0 54 0 6 Nm Remove this cut out for et bus rail installation from AWG 2 1 0 Opening for wire sizes cut out Cal has been removed
165. t voltage the over voltage protection level and the under voltage limit If over voltage protection or under voltage limits have been set you cannot program the output voltage outside those limits Press the FINE button to set fine adjustment resolution GPIB address Selects the GPIB address when OCP 488 is pressed and held Indicates the unit is in constant voltage mode with the output voltage held constant Normally displays the voltage measured at the sense terminals Indicates the programmed voltage setting when the LIMIT button is pressed Indicates either the OVP or UVL setting when the OVP UVL button is pressed Indicates the GPIB address when the OCP 488 button is pressed and held Indicates the IP and Ethernet address when the LAN button is pressed and held Normally displays the current measured at the output terminals Indicates the programmed current setting when the LIMIT button is pressed Indicates the IP and Ethernet address when the LAN button is pressed and held Indicates the unit is in constant current mode with the output current held constant Adjusts the output current Press the FINE button to set fine adjustment resolution Indicates the output is enabled or on Qutput function Press the OUT ON button to turn the output on or off Press the OUT ON button to reset the unit and return the output to on after an OVP or OCP event Start Up function Press and hold the OUT ON button to toggle between t
166. t voltage constant current with automatic crossover High resolution voltage and current front panel controls Accurate voltage and current readback Independent edge triggered external shut off and level triggered external enable disable Parallel master slave operation with active current sharing Remote sensing to compensate for voltage drop in load leads Analog output programming and monitoring System Features Built in GBIB LAN USB interface A built in Web server that lets you control the instrument directly from an internet browser on your computer Zero gap stacking no ventilation holes at the top and bottom surface of the power supply Active power factor correction Fan speed control for low noise and extended fan life 8 Series N8700 User s Guide Quick Reference 1 Programmable Functions Model Ratings Series N8700 User s Guide Output voltage and current setting Output voltage and current measurement Output voltage and current trigger setting Output On Off control Over current protection setting Over voltage protection setting and readback Under voltage limit setting and readback Start up mode either last setting or reset mode Status register setting and readback Bus trigger Calibration 3 3 kW Models Note 1 2 5 kW Models Note 1 2 Voltage Current Voltage Current Model Range Range Model Range Range N8731A
167. t voltage should return to within the specified voltage in the specified time following the 10 to 90 load change Check both loading and unloading transients by triggering on the positive and negative slope Record the voltage at time t in the performance test record under Transient Response Series N8700 User s Guide Verification and Calibration Appendix B Constant Current Tests A test record for each model is provided in the following section Refer to the appropriate test record for instrument settings for each of the following tests Series N8700 User s Guide Current Programming and Readback Accuracy Test category performance calibration This test verifies that the current programming and measurement functions are within specifications 1 Turn off the power supply and connect the current shunt directly across the output Connect the DVM across the current shunt Turn on the power supply and program the output voltage to its full scale value and the output current to zero The CC annunciator should be on and the output voltage reading should be approximately zero Divide the voltage drop DVM reading across the current shunt by its resistance to convert to amps and record this value Tout Also record the current measurement readback The readings should be within the limits specified in the test record for the appropriate model under Current Programming and Readback Minimum Current Iout Program the
168. ted Because it requires your program to read the returned value before executing the next program statement OPC can be used to cause the controller to wait for commands to complete before proceeding with its program This command sets the OPC status bit when all pending operations have completed Since your program can read this status bit on an interrupt basis OPC allows subsequent commands to be executed The trigger subsystem must be in the Idle state for the status OPC bit to be true As far as triggers are concerned OPC is false whenever the trigger subsystem is in the Initiated state Device Clear You can send a Device Clear at any time to abort a SCPI command that may be hanging up the GPIB interface Device Clear clears the input and output buffers of the power supply The status registers error queue and all configuration states are left unchanged by 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 Agilent BASIC CLEAR 705 IEEE 488 Device Clear Series N8700 User s Guide Series N8700 User s Guide 5 Language Reference SCPI Command Sul isisisi 68 Calibration Commands u vseessesendassneasninncsesvininnnnsndrninies 70 LEE PUTER LE EEE aA 71 DOI ae LG be SE 72 Source Commands uae emammminisninesnnimissnsiinisiisssinrsirnsseivdniiisie 73 Status Commands un avnnainnninaonnnn
169. thing Description Queries the accumulated status ASTS The response represents the sum of the binary weights of the ASTS register bits The ASTS register is set to the present status after being queried Returns the power supply to the power on state Same as RST Generates error 203 Generates error 203 Queries the present programming or hardware error An error code number is returned over the GPIB to identify the error The error register is cleared after being read Queries the fault register A bit is set in the fault register when the corresponding bit in both the status and the mask registers The response is an integer 0 to 255 The fault register is cleared after being read Turns the OCP on or off This is only allowed for constant current mode FOLD 2 Constant voltage mode FOLD1 generates error 203 Queries the OCP setting The response is FOLD 2 When turned on HOLD 1 causes the VSET ISET FOLD and UNMASK values to be held until a trigger occurs This only applies to the compatibility functions not the SCPI functions Queries the hold setting The response is HOLD 1 Queries the identification model number of the power supply Sets a soft programming limit for current Attempting to program the current above this setting will generate an error Queries the IMAX setting The response is a real number Queries the measured output current The response is a real number Sets the output current Quer
170. tribution terminals or if one load is more sensitive than the others directly at the critical load Distribution terminal Power Supply Rem sense Local sense Local sense Rem sense 29 2 30 Installation Output Noise and Impedance Effects To minimize the noise pickup or radiation the load wires and remote sense wires should be twisted pairs to the shortest possible length Shielding of sense leads may be necessary in high noise environments Where shielding is used connect the shield to the chassis via a rear panel ground screw Even if noise is not a concern the load and remote sense wires should be twisted pairs to reduce coupling which might impact the stability of power supply The sense leads should be separated from the power leads Twisting the load wires reduces the parasitic inductance of the cable which could produce high frequency voltage spikes at the load and the output because of current variation in the load itself The impedance introduced between the power supply output and the load could make the ripple and noise at the load worse than the noise at the power supply rear panel output Additional filtering with bypass capacitors at the load terminals may be required to bypass the high frequency load current Inductive Loads Inductive loads can produce voltage spikes that may be harmful to the power supply A diode should be connected across the output The diode voltage and current rating
171. trument to the Universal Serial Bus USB The following figure illustrates a typical USB interface system Con nect to Instrument Connect to USB USB port on port on PC instrument 1 Ifyou have not already done so install the Agilent IO Libraries Suite from the Automation Ready CD ROM that is shipped with your product 2 Connect your instrument to the USB port on your computer 3 With the Connection Expert utility of the Agilent IO Libraries Suite running the computer will automatically recognize the instrument This may take several seconds When the instrument is recognized your computer will display the VISA alias IDN string and VISA address This information is located in the USB folder The VISA address is USB0 2391 2055 model serialnumber 0 INSTR where 2391 is the Agilent 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 4 You can now use Interactive IO within the Connection Expert to communicate with your instrument or you can program your instrument using the various programming environments For detailed information about LAN interface connections refer to the Agilent Technologies USB LAN GPIB Interfaces Connectivity Guide located on the Automation Ready CD ROM that is shipped with your product Series N8700 User s Guide The following steps will help you quickly get started connecting
172. ts full scale voltage rating or 40 volts whichever is lower 4 Wait a few seconds until the DC VOLTS display returns to show the output voltage 5 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 6 Press the OVP UVL button again Rotate the voltage knob and reset the OVP level of the unit to its maximum setting Series N8700 User s Guide UVL Check Operating the Power Supply Locally 3 Press the OVP UVL button twice so that the DC AMPS display indicates UUL The DC VOLTS display shows the UVL level Use the voltage knob and set the UVL level of the unit to 50 of its full scale voltage rating or 30 volts whichever is lower Wait a few seconds until the DC VOLTS display returns to show the output voltage Use the voltage knob and lower the output voltage of the unit until it approaches the UVL setting Check to make sure that the output voltage cannot be set lower than the UVL setting Press the OVP UVL button twice Rotate the voltage knob and reset the UVL level of the unit to its minimum setting Constant Current Check 1 OCP Check Series N8700 User s Guide Turn the POWER switch off Wait a few seconds until the AC indicator on the front panel goes out Use a heavy wire and short the V and V output terminals together Turn the POWER switch on Turn the output on by
173. tton to enable the output and re arm over current protection following an over current protection event GPIB address Press and hold the OCP 488 button for three seconds to set the GPIB address with the Voltage knob OVP function Press the OVP UVL button once to set the over voltage protection level with the Voltage knob the display shows OUP You cannot set the over voltage protection lower than about 5 above the present output voltage setting UVL function Press the OVP UVL button twice to set the under voltage program ming limit with the Voltage knob the display shows UUL You cannot set the under voltage protection higher than about 5 below the present output voltage setting Limit function Press the LIMIT button to display the output voltage and current limit Settings are shown on the display for five seconds then the display returns to show the actual output voltage and current Lock function Press and hold the LIMIT button to toggle between Locked front panel LFP and Unlocked front panel UFP The display will cycle between LFP and UFP Releasing the LIMIT button while one of the modes is displayed selects that mode If the display indicates rLFP the front panel has been locked by a remote programming command Indicates the LIMIT button is pressed Sets Fine or Coarse adjustment control for the Voltage and Current knobs Press the FINE button to set Fine mode press again to return to Coarse mode Fine
174. turn the power supply output on or off This can be done with the front panel OUT ON button or from the rear panel J1 connector With the output off adjustments can be made to the power supply or the load without shutting off AC power The OUT ON button can be pressed at any time to enable or disable the power supply output When the output is disabled the output voltage and current go to zero and the display shows OFF Safe Start and Auto Restart The power supply can be programmed to have either the last operating settings Auto Restart or the reset settings Safe Start apply at turn on Press and hold the OUT ON button to select between Safe Start and Auto Restart modes The display continuously cycles between SAF and AUT every three seconds Releasing the OUT ON button while one of the modes is displayed selects that mode In Safe Start mode the power supply turns on with the reset settings see chapter 5 under RST The output is disabled and the output voltage and current are zero This is the factory default In Auto Restart mode the power supply restores the operating settings that were saved when it was last turned off see below The output is either enabled or disabled according to its last setting Output On Off state UVL level Output voltage setting OCP setting Output current setting Locked Unlocked front panel OVP level Start up mode Output Shut Off Terminals Output Shut Off SO terminals are available on
175. vel is either the value in the following table or the immediate voltage setting multiplied by 1 05 whichever is higher 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 8v 10V 15V 20V 30V 40V 60V 80V 100V 150V 300V 600V Min protection limit 0 5 0 5 1 0 1 0 2 0 2 0 5 0 5 0 5 0 5 0 5 0 5 0 Max protection limit 10 12 18 24 36 44 66 88 110 165 330 74 Series N8700 User s Guide 660 Language Reference 5 Status Commands Status commands program the power supply s status registers As shown in the following figure the power supply has three groups of status registers Operation Questionable and Standard Event The Operation and Questionable status groups each consist of the Condition Enable and Event registers and NTR and PTR filters QUESTIONABLE STATUS CONDITION PTR NTR EVENT ENABLE ov 1 OC 2 PF 4 oT JE LOGICAL OR INH 512 UNR 1024 E STAT QUES COND STAT QUES ENAB lt n gt ERROR QUEUE STAT QUES PTR NTR lt n gt STAT QUES ENAB AOAR STAT QUES PTR NTR STAT QUES EVEN ERROR QUEUE NOT EMPTY SERVICE REQUEST STATUS BYTE ENABLE STANDARD EVENT STATUS EVENT ENABLE asia aE BUFFER OPG QUEUE NOT ave EMPTY BDE 8 LOGICAL EXE 16 16 OR CME 3 PON 128 STB SRE lt n gt SRE oO
176. ven time depends on the voltage setting current limit setting and the load resistance Constant Voltage Mode When the power supply is operating in constant voltage mode the CV indicator on the front panel illuminates Adjustment of the output voltage can be made when the output is enabled On or disabled Off When the output is enabled simply rotate the voltage knob to program the output voltage When the output is disabled press the LIMIT button and then rotate the voltage knob The DC VOLTS display will show the programmed voltage for 5 seconds after the adjustment has been completed and then indicate OFF The voltage knob can be set to coarse or fine resolution Press the FINE button to select finer resolution The FINE indicator turns on If you cannot adjust the voltage to the value that you desire the power supply may be operating at its current limit Check the load condition and the current limit setting Also the voltage cannot be programmed lower than about 5 above the UVL setting or higher than about 5 below the OVP setting Constant Current Mode 40 When the power supply is operating in constant current mode the CC indicator on the front panel illuminates Adjustment of the output current limit can be made when the output is enabled On or disabled Off When the output is enabled and in constant current mode simply rotate the current knob to program the current limit If the output is in constant voltag
177. vvvvevvsvvvsvsvevee 41 Output On Off Controls s meensnsensnnsnsnsnsnsseeesee 44 Analog Programming of Output Voltage and Current cccsseseeeeee 47 4 Operating the Power Supply Remotely Connecting to the Interfaces c ccecsssessssessesseseeseseeseeseeseesteesstssesseenesteeeees 52 SCPI Commands an Introduction ccescesesesssscssescssscsseseesessceneesevsesnenees 62 5 Language Reference SCPI Command Summary rsssrvorsrvorsrversrversrverersersrversrsersrrersnvensenersrsenersensenensnn 68 Calibration Command ccccccecsscsessessessesessessessessessesessessesseeaeesesssnssteateneenees 70 Measure Commannde c sccccccecessessessesseseesessessessesseessesseeseeassnsssenseneateateaeeess 71 Output COMMAMNAS uu cccesessestesessesessssessssessssessessesssssssssesssssesssesssssssseessseesesees 72 Source COMMANMAS secessessessessesesseseessessesscsessessessesaceussessesueeaeeecenseneateateaeees 73 Status COMMANAS sissies veweenth wenn i at 75 System COMMANMAS cccsccsessescssescssescscescsssssssescssessssessssssssssessseseseesesseseseesesees 81 Trigger Commands tiiicnaiitnidinnid winnadntinonihnk hasannihaniniien 83 Series N8700 User s Guide 5 6 Programming Examples Output Programming Example oornrrorvorrrrrrrssrsserenssrsrrsrssrnerssenrrnrrsrssennseensnn 86 Trigger Programming Example c ccccccsscceseseseceseseessesesesasseeasseeaseteneeeees 88 Appendix
178. where modelnumber is the instrument s 6 character model number e g N8741A and serialnumber is 5th through the 9th character of the 10 character serial number located on the label on the side of the unit e g H1234 if the serial number is US24H12345 A N8741A H1234 is an example of a hostname 3 Use the Connection Expert utility of the Agilent 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 If the instrument cannot be found you can add the instrument using the instrument s hostname If this does not work refer to the chapter on Troubleshooting Guidelines in the Agilent Technologies USB LAN GPIB Interfaces Connectivity Guide 4 You can now use Interactive IO within the Connection Expert to communicate with your instrument 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 instrument as described under Using the Web Server later in this chapter Series N8700 User s Guide Operating the Power Supply Remotely 4 Connecting to a Private LAN A private LAN is a network in which LAN enabled instruments and computers are directly connected and not connected to a site LAN They are typically small with no centrally managed resources To Network To LAN Port Interface Card NIC ay EG CATS5 Crossover Cabl
179. which is not customer accessible Series N8700 User s Guide 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 qualified service trained personnel who are aware of the hazards involved should remove instrument covers Always disconnect the power cable and any external circuits before removing the instrument cover Do Not Modify the Instrument Do not install substitute parts or perform any unauthorized modification to the product Return the product to an Agilent Sales and Service Office for service and repair to ensure that safety features are maintained In Case of Damage Instruments that appear damaged or defective should be made inoperative and secured against unintended operation until they can be repaired by qualified service personnel CAUTION A CAUTION notice denotes a hazard It calls attention to an operating procedure practice or the like that if not correctly performed or adhered to could result in damage to the product or loss of important data Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met A WARNING notice denotes a hazard It calls attention to an operating procedure practice or the like that if not correctly performed or adhered to could result in personal injury or death Do not proceed beyond a WARNING notice until the indi
180. you have not already done so install the Agilent IO Libraries Suite from the Automation Ready CD ROM that is shipped with your product 2 If you do not have a GPIB interface card installed on your computer turn off your computer and install the GPIB card 3 Connect your instrument to the GPIB interface card using a GPIB interface cable 4 Use the Connection Expert utility of the Agilent IO Libraries Suite to configure the installed GPIB interface card s parameters 5 The power supply is shipped with its GPIB address set to 5 Use the front panel menu if you need to change the GPIB address a Press and hold the OCP 488 button for about three seconds The DC VOLTS display will show the present GPIB address b To change the GPIB address turn the voltage knob until the desired GPIB address appears in the display Valid GPIB addresses are in the range of 0 to 30 6 You can now use Interactive IO within the Connection Expert to communicate with your instrument or you can program your instrument using the various programming environments 52 Series N8700 User s Guide USB Interface Operating the Power Supply Remotely 4 For detailed information about USB interface connections refer to the Agilent Technologies USB LAN GPIB Interfaces Connectivity Guide located on the Automation Ready CD ROM that is shipped with your product LAN Interface The following steps will help you quickly get started connecting your USB enabled ins

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