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Getting Started

Getting Started

Turn the Unit On

Set the Output Voltage

Set the Output Current

Set the Over-Voltage Protection

Enable the Output

Use the Built-in Help System

Turn the Unit On

Verify that the line cord is connected and plugged in to the correct AC line voltage.

Turn the unit on with the front panel power switch. Rotate the knob from 0 to 1. The front panel display will light up
after a few seconds. A power-on self-test occurs automatically when you turn the unit on. This test assures you that
the power supply is operational.

It may take about 30 seconds or so for the power supply to initialize before it is ready for use.

If the instrument does not turn on, verify that the power cord is firmly connected. Also make sure that the instrument
is connected to an energized power source.

If the power-on self test fails, the display shows

ERR

in the lower right corner. See

SCPI Error Messages

for inform-

ation on error codes. See

Service and Repair - Introduction

for instructions on returning the instrument for service.

Set the Output Voltage

Method 1

Turn the Voltage knob to set the output voltage. The setting value appears in the Set field on the bottom of the display.

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Agilent N8900 Series Operating and Service Guide

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Содержание N8900 series

Страница 1: ...Agilent N8900 Series Autoranging System DC Power Supply Operating and Service Guide...

Страница 2: ...t please contact Agilent at www agilent com find n8900 docfeedback Preliminary Information Legal and Safety Information Models and Options Specifications and characteristics Operating Information Intr...

Страница 3: ...ical support l In the United States 800 829 4444 l In Europe 31 20 547 2111 l In Japan 0120 421 345 Use www agilent com find assist for information on contacting Agilent worldwide or contact your Agil...

Страница 4: ...ble 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 merchantabilit...

Страница 5: ...l models generate voltages in excess of 60 VDC with some models rated at up to 1 500 VDC Ensure that all instrument connections load wiring and load connections are either insulated or covered so that...

Страница 6: ...ere 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 r...

Страница 7: ...mains when switch is off Caution risk of electric shock Caution refer to accompanying documents Earth ground terminal The CE mark is a registered trademark of the European Community The TUV mark is a...

Страница 8: ...MCV 40 Year EPUP 1SM1 A This text indicates that the instrument is an Industrial Scientific and Medical Group 1 Class A product CISPER 11 Clause 4 ICES NMB 001 This text indicates product compliance...

Страница 9: ...V 200 V 500 V 750 V 1000 V 80 V 200 V 500 V 750 V 1000 V 340 A 140 A 60 A 40 A 30 A 340 A 140 A 60 A 40 A 30 A 208 VAC 208 VAC 208 VAC 208 VAC 208 VAC 400 VAC 400 VAC 400 VAC 400 VAC 400 VAC 15 kW Mod...

Страница 10: ...mental characteristics are typical unless otherwise noted Specifications and characteristics are subject to change without notice Specifications Specification 5 kW N8920A N8940A N8921A N8941A N8923A N...

Страница 11: ...on 15 kW N8931A N8951A N8932A N8952A N8934A N8954A N8935A N8955A N8937A N8957A DC Ratings Voltage Current Power 0 80 V 0 510 A 15 kW 0 200 V 0 210 A 15 kW 0 500 V 0 90 A 15 kW 0 750 V 0 60 A 15 kW 0 1...

Страница 12: ...load Down no load 30 ms 80 ms 30 s 30 ms 80 ms 10 s 30 ms 80 ms 10 30 ms 80 ms 10 Over voltage protection range 0 to 88 V 0 to 220 V 0 to 550 V 0 to 825 V Remote sense compensation per load lead 2 V 5...

Страница 13: ...no load 30 ms 80 ms 30 s 40 s 30 ms 80 ms 10 s 30 ms 80 ms 10 s 30 ms 80 ms 10 s 30 ms 80 ms 10 s Over voltage protection range 0 to 88 V 0 to 220 V 0 to 550 V 0 to 825 V 0 1100 V Remote sense com pe...

Страница 14: ...10 s 30 ms 80 ms 10 s 30 ms 80 ms 10 s Over voltage protection range 0 to 88 V 0 to 220 V 0 to 550 V 0 to 825 V 0 1650 V Remote sense com pensation per load lead 2 V 5 V 10 V 18 V 30 V Source regulati...

Страница 15: ...C Tick mark This ISM device complies with Canadian ICES 001 Cet appareil ISM est conforme la norme NMB 001 du Canada Complies with European Low Voltage Directive and carries the CE marking Conforms to...

Страница 16: ...Operating Information Operating Information Introduction to the Instrument Installing the Instrument Getting Started Using the Power Supply Agilent N8900 Series Operating and Service Guide 15...

Страница 17: ...tion of the output ratings of the various models Output features l Full programming capability is provided for the entire range of output voltage and current l Paralleling capability for increased out...

Страница 18: ...utput is in constant voltage mode CC the output is in constant current mode CP the output is limited by the power limit boundary OV the output is disabled by the over voltage protection OC the output...

Страница 19: ...s the following front panel meter and command menus Meter returns the display to metering mode Repeatedly press this key to cycle through the following measurement functions Voltage Current Voltage Po...

Страница 20: ...lue If you exit a field without pressing the Enter key the value is ignored Rear Panel at a Glance GPIB GPIB interface connector LAN LAN interface connector Sharing Current sharing connections for par...

Страница 21: ...ings Clear Clears protection conditions and displays output status States Reset Resets all instrument settings to the reset RST state SaveRecall Saves and recalls instrument settings PowerOn Selects t...

Страница 22: ...he Admin functions Cal Displays calibration commands Voltage Calibrates voltage programming and measurement Current Calibrates current programming and measurement Count View the calibration count Date...

Страница 23: ...lling the Instrument Before Installation or Use AC Mains Connections Single Unit Connections Multiple Unit Connections Analog Port Connections Interface Connections Rack Mounting 22 Agilent N8900 Seri...

Страница 24: ...ter terminals are not used 5003 2037 AC plug Connector plug for AC input 5003 2053 for 400 VAC inputs 5003 2091 for 208 VAC inputs Bolts nuts washers 2 each Hardware kit for DC output terminals 5003 2...

Страница 25: ...ront or the exhaust at the rear of the unit Fans cool the power supply by drawing air through the front and exhausting it out the back Allows at least 8 inches 20 cm of space at the front and back of...

Страница 26: ...rate conductor Be certain that the AC mains includes an earth ground connection AC mains connections must be made by a qualified electrician who is knowledgeable about 3 phase mains circuits and all a...

Страница 27: ...one to three internal 5 6 kW power blocks each of which is connected across a separate phase of the 3 phase AC mains For 5 kW and 10 kW units this will result in a current imbalance when installing o...

Страница 28: ...elow may be used as the emergency dis connection device Removing the connector will disconnect AC input power to the unit Ensure that the connector is accessible Unit Rating L1 I max L2 I max L3 I max...

Страница 29: ...nectors 400 VAC Connector This connector can receive wires with diameters up to 12 AWG or 4 mm2 208 VAC Connector This connector can receive wires with diameters up to 6 AWG or 10 mm2 28 Agilent N8900...

Страница 30: ...us voltage on the output or sense terminals before touching them The following factors should be considered when wiring the load to the power supply l Load wire current carrying capacity l Load wire i...

Страница 31: ...ut power consumption from the power supply and poor dynamic response to load changes Larger diameter wire sizes will help minimize load wire voltage drops Twisting or bundling load wires will help red...

Страница 32: ...sensing and are connecting multiple loads to one output connect each load to the output ter minals using separate load wires as shown in the following figure This minimizes mutual coupling effects and...

Страница 33: ...lways connect the sense lead to the terminal of the load and the sense lead to the terminal of the load If a sense lead opens during operation the output may momentarily overshoot Connect the unit for...

Страница 34: ...p of external noise In extremely noisy environments it may be necessary to shield the sense leads Ground the shield at the power supply end only do not use the shield as one of the sensing conductors...

Страница 35: ...mage Only connect power supplies that have identical voltage and current ratings in parallel Connecting power supplies in parallel provides a greater current capability than can be obtained from a sin...

Страница 36: ...Multiple Unit Connections Agilent N8900 Series Operating and Service Guide 35...

Страница 37: ...e a digital RS485 bus Connections are made using standard CAT5 or better cables For further information about group configurations refer to Group Operation Do not connect an Ethernet port to a Group c...

Страница 38: ...y separated from DC output and referenced to earth ground Therefore never connect a ground from the analog interface to the DC or DC out puts Use an isolated ungrounded programming source to prevent g...

Страница 39: ...ocumentation included with the Agilent IO Libraries Suite GPIB Connections The following figure illustrates a typical GPIB interface system 1 Connect your instrument to the GPIB interface card using a...

Страница 40: ...al private LAN system 1 Connect the instrument to the site LAN or to your computer using a LAN cable The as shipped instrument LAN set tings are configured to automatically obtain an IP address from t...

Страница 41: ...wer supply is operational It may take about 30 seconds or so for the power supply to initialize before it is ready for use If the instrument does not turn on verify that the power cord is firmly conne...

Страница 42: ...enabled Method 3 Use the Voltage key to select the voltage entry field In the display below the voltage setting is selected Enter the desired setting using the numeric keypad Then press Enter If you...

Страница 43: ...t If you make a mistake either use the backspace key to delete the number press Back to back out of the menu or press Meter to return to meter mode Set the Over Voltage Protection Use the front panel...

Страница 44: ...e the top level menu commands are shown with the Output com mand highlighted The third line indicates which commands are available under the Output command If there are no lower level commands a brief...

Страница 45: ...e display You must program a minimum current value for the output voltage to rise to its programmed setting For a description of the status indicators refer to Front Panel Display at a Glance Use the...

Страница 46: ...is continually monitored and automatically reconfigured when the instrument is unplugged for a minimum of 20 seconds and then reconnected to a network USB Configuration There are no configurable USB...

Страница 47: ...CPI Command Select System IO LAN Settings Displays the active LAN settings Use the up and down arrow key to scroll through the list Not available The currently active settings for the IP Address Subne...

Страница 48: ...ent An IP Address consists of 4 decimal numbers separated by peri ods Each decimal number ranges from 0 through 255 with no leading zeros for example 169 254 2 20 l Subnet Mask This value is used to e...

Страница 49: ...formation you only need to change this if DHCP is unused or not functional WINS configures the Windows service of the instrument This is similar to the DNS service that translates domain names into IP...

Страница 50: ...n and serialnumber is the 10 character serial number located on the label on the top of the unit e g MY12345678 Services This selects the LAN services to enable or disable Front Panel Menu SCPI Comman...

Страница 51: ...iring and load connections are either insulated or covered so that no accidental contact with lethal output voltages can occur If desired you can control access to the Web interface using password pro...

Страница 52: ...all commands to the control socket must be terminated with a newline and all query responses returned on the control socket will be terminated with a newline To send a device clear send the string DCL...

Страница 53: ...Front Panel Menu Reference first See SCPI Programming Reference for details on the SCPI commands to program the instrument This section covers Programming the Output Programming Output Protection Pro...

Страница 54: ...ge setting or Press the Voltage key enter a value Then press Select To set the output voltage to 90 volts VOLT 90 When the unit is operating in constant voltage mode CV status is displayed on the fron...

Страница 55: ...tection is always enabled PF Power Fail indicates that a low voltage condition on the AC mains has occurred and has disabled the output The PF protection is always enabled MSP Master Slave Protection...

Страница 56: ...gnitude of the over current con dition compared to the current limit setting For example if the over current is only slightly greater than the current limit setting it may take several tens of millise...

Страница 57: ...the transient mode to Step Then press Select To enable the transient function to respond to step triggers use VOLT MODE STEP or CURR MODE STEP In Step mode the triggered value becomes the immediate va...

Страница 58: ...Control Select Trigger to generate an immediate trigger signal regardless of the trigger source setting To generate a transient trigger TRIG TRAN Alternatively you can also program a TRG or an IEEE 4...

Страница 59: ...and current Power measurements are derived from the voltage and current measurements Average DC Measurements Use the following commands to make a measurement Front Panel SCPI Command Select the Meter...

Страница 60: ...current limit of the remaining units is set to a higher value those units will continue to share cur rent until their current limit is reached l Current sharing continues until the current limit of t...

Страница 61: ...een configured as a slave the following functions will be disabled as these will be controlled by the master unit l Output On Off l Voltage and Current setting controls l Output Transient Protect and...

Страница 62: ...ter unit will search for the slave units and compare the list of slaves found with the previously stored configuration If the lists match nor mal operation continues If the lists do not match a Master...

Страница 63: ...SB web browser However reading the instrument output and status is still available using the aforementioned interfaces The OVP level and the OCP settings cannot be programmed using the analog interfac...

Страница 64: ...ay or transistor is used to switch the pin to digital ground DGND Output current and voltage control using a voltage source Analog control of the output voltage and current can be accomplished by conn...

Страница 65: ...andard multimeter to the VMON and IMON pins as shown Depending on the reference voltage selection a voltage read ing from 0 to 5 V or 0 to 10 V corresponds to the zero to full scale voltage or current...

Страница 66: ...analog inputs and outputs 12 Not used 13 INHIBIT Digital in Inhibits turns off output when low Only active when A ENAB is low 14 OVP Digital out Over voltage status indicator High when OVP is tripped...

Страница 67: ...he locations are numbered 0 through 9 Any state previously stored in the same location will be overwritten Front Panel Menu SCPI Command Select States SaveRecall In the SaveRecall field enter a locati...

Страница 68: ...activate Check Wake on I O to activate the display with I O bus activity Not available Password Protection You can password protect all functions located in the Admin menu These include instrument ca...

Страница 69: ...ding to Ohm s law When the power supply is operating in constant voltage mode the front panel CV status indicator is displayed The CV status condition can also be read by the remote interface as well...

Страница 70: ...in threshold A OP protection occurs when the threshold is exceeded The OP protection is always enabled In CP mode the DC output power is limited at the unit s maximum rated power Power limiting operat...

Страница 71: ...A N8948A N8929A N8949A N8930A N8950A V1 80 V 200 V 500 V 750 V 1000 V I1 125 A 50 A 20 A 13 33 A 10 A V2 29 4 V 71 43 V 166 67 V 250 V 333 33 V I2 340 A 140 A 60 A 40 A 30 A 15 kW Models N8931A N8951A...

Страница 72: ...ilent com find n8900 doc This document is also provided on a N8900 Product Reference CD ROM that can be ordered separately For detailed information about interface connections refer to the Agilent Tec...

Страница 73: ...separated from the first parameter by a blank space Use a semicolon to separate multiple commands as shown below Subsystem Commands Subsystem commands perform specific instrument functions They are c...

Страница 74: ...Otherwise a Query Interrupted error will occur and the unreturned data will be lost Command Separators and Terminators Separators Colons separate keyword levels Blank spaces must be used to separate c...

Страница 75: ...ent with the command string Any keyword enclosed in brackets is optional and can be omitted However if you are combining several commands within the same message string as previously described you mus...

Страница 76: ...uote You can include the quote delimiter as part of the string by typing it twice without any characters in between The following command uses a string parameter CALibrate DATE 12 12 12 Device Clear D...

Страница 77: ...by Subsystem Commands by Subsystem Subsystem CALibrate DISPlay MEASure OUTPut SOURce CURRent VOLTage STATus SYSTem TRIGger Additional Commands Compatibility 76 Agilent N8900 Series Operating and Servi...

Страница 78: ...l value Calibrates the current programming and measurement The value selects the range to calibrate Parameter Typical Return The maximum current of the range being calibrated none Calibrates the curre...

Страница 79: ...ric password to prevent unauthorized calibration Parameter Typical Return password a numeric value up to 15 digits none Set a new password to a value of 1234 CAL PASS 1234 l If the password is set to...

Страница 80: ...ON password is optional to secure the instrument but must be correct if provided CALibrate VOLTage LOCal LEVel value Calibrates the local voltage programming and measurement The value selects the ran...

Страница 81: ...display off DISP OFF LXI IDENtify STATe 0 OFF 1 ON LXI IDENtify STATe Turns the front panel LXI identify indicator on or off When turned on the LAN status indicator on the front panel blinks on and of...

Страница 82: ...DC MEASure SCALar POWer DC MEASure SCALar VOLTage DC Initiates and triggers a measurement Returns the averaged output measurement Values returned are either in amperes volts or watts Parameter Typical...

Страница 83: ...state is set to the RST state RST or the state stored in memory location 0 RCL0 Instrument states can be stored using the SAV command This parameter is saved in non volatile memory Parameter Typical...

Страница 84: ...OURce CURRent MODE Sets the transient mode This determines what happens to the output current when the transient system is initiated and triggered FIXed keeps the output current at its immediate value...

Страница 85: ...ue MIN MAX SOURce VOLTage LEVel TRIGgered AMPLitude MIN MAX Sets the immediate voltage level and the triggered voltage level when the output is operating in constant voltage mode The triggered level i...

Страница 86: ...put is dis abled and the Questionable Condition status register OV bit is set Parameter Typical Return 0 120 of voltage rating MIN MAX RST 120 of rating over voltage level Sets the over voltage protec...

Страница 87: ...egister l The value returned is the binary weighted sum of all bits set in the register STATus OPERation CONDition Queries the condition register for the Operation Status group This is a read only reg...

Страница 88: ...urn A decimal value that corresponds to the binary weighted sum of the bits in the register bit value Enable bit 3 and 4 in the NTR register STAT OPER NTR 24 Enable bit 3 and 4 in the PTR register STA...

Страница 89: ...tus condition register STAT QUES COND l The condition register bits reflect the current condition If a condition goes away the corresponding bit is cleared l RST clears this register other than those...

Страница 90: ...both NTR and PTR registers are set to 1 then any transition of that bit at the Questionable Condi tion register sets the corresponding bit in the Questionable Event register l If the same bits in bot...

Страница 91: ...he ESB bit through the enable register To set the enable register mask write a decimal value to the register using ESE l Once a bit is set it remains set until cleared by this query or CLS l The value...

Страница 92: ...to cause the MSS bit of the Status Byte register to be set Refer to Status Tutorial for more information The query reads the enable register and returns a decimal value which corresponds to the binar...

Страница 93: ...ending operations are complete See OPC for more information Parameter Typical Return none none Wait until all pending operations complete WAI l WAI can only be aborted by sending the instrument a Devi...

Страница 94: ...ST COMM TCP CONT SYSTem COMMunicate RLSTate LOCal REMote RWLock SYSTem COMMunicate RLSTate Configures the remote local state of the instrument Remote and Local do the same thing and are included for c...

Страница 95: ...s to flash memory and then performs a full chip erase as per the man ufacturer s data sheet Identification data such as instrument firmware model number serial number MAC address and calibration data...

Страница 96: ...ocations 0 through 9 with the SAV com mand All instrument states are recalled except 1 the trigger system is set to the Idle state 2 calibration is dis abled 3 trigger settings are set to their Idle s...

Страница 97: ...er turn on when the Output Power On state is set to RCL 0 l The calibration state is NOT saved as part of the SAV operation l Data saved in non volatile memory described in the Non volatile Settings i...

Страница 98: ...es the transient trigger system This moves the trigger system from the idle state to the wait for trigger state which enables the instrument to receive triggers Parameter Typical Return none none Init...

Страница 99: ...d any trigger l When sent the transient trigger will cause an output change as specified by the CURRent TRIGgered or VOLTage TRIGgered commands l When the trigger sequence completes the WTG tran bit i...

Страница 100: ...es the various events from the condition register There is no buffering in this register while an event bit is set subsequent events corresponding to that bit are ignored This is a read only register...

Страница 101: ...us register bit assignments Bit Bit Name Decimal Value Definition 0 OV 1 Output is disabled by the over voltage protection 1 OC 2 Output is disabled by the over current protection 2 PF 4 Output is dis...

Страница 102: ...ssages 4 Execution Error 16 An execution error occurred Error Messages 5 Command 32 A command syntax error occurred Error Messages 6 not used not used 0 is returned 7 Power On 128 Power has been cycle...

Страница 103: ...us Byte register The RQS bit is a latched version of the MSS bit Whenever the instrument requests service it sets the SRQ interrupt line true and latches RQS into bit 6 of the Status Byte register Whe...

Страница 104: ...Status Tutorial Status Diagram Agilent N8900 Series Operating and Service Guide 103...

Страница 105: ...xt level in the calibration PASSword value Sets a numeric password to prevent unauthorized calibration SAVE Saves the calibration constants in non volatile memory STATe 0 OFF 1 ON Enables or disables...

Страница 106: ...nuous TRANsient 0 OFF 1 ON Continuously initiates the transient trigger system LXI Command LXI IDENtify STATe 0 OFF 1 ON Turns the front panel LXI identify indicator on or off MEASure Commands MEASure...

Страница 107: ...ction LEVel value Sets the over voltage protection level STATus Commands STATus OPERation EVENt Queries the operation event register CONDition Queries the operation condition register ENABle value Set...

Страница 108: ...tate of the instrument ERRor Reads and clears one error from the error queue SECurity IMMediate Clears all user memory and reboots the instrument VERSion Returns the SCPI version that the instrument c...

Страница 109: ...Xed CURRent PROTection DELay 50 ms CURRent PROTection STATe OFF CURRent TRIGgered 0 DISPlay ON OUTPut OFF TRIGger TRANsient SOURce BUS VOLTage 0 VOLTage MODE FIXed VOLTage PROTection 120 of rating VOL...

Страница 110: ...pped settings Get IP Address Automatic IP Address 169 254 89 00 Subnet mask 255 255 0 0 Default gateway 0 0 0 0 Host name A N89xxx xxxxx mDNS service name A N89xxx xxxxx local LAN service VXI 11 Enabl...

Страница 111: ...error l The front panel reports errors from all I O sessions and the global error queue To read the error queue from the front panel press the SYSTEM button then the Help softkey Then select View remo...

Страница 112: ...ed because of the present instrument state 317 Invalid format The saved state file is corrupted 318 Configuration error A master slave configuration error has occurred 320 Firmware update error This m...

Страница 113: ...ic data error 121 Invalid character in number An invalid character for the data type was found in the command string 123 Exponent too large The magnitude of the exponent was larger than 32000 124 Too...

Страница 114: ...Execution error Generic syntax error 220 Parameter error A data element related error occurred 221 Settings conflict A data element could not be executed because of the present instrument state 222 Da...

Страница 115: ...tandard Event Status register bit 2 400 Query Error Generic error query 410 Query INTERRUPTED A condition causing an interrupted query error occurred 420 Query UNTERMINATED A condition causing an unte...

Страница 116: ...0 MPS In most cases these commands either do nothing or specify a pre defined parameter that is compatible with the N8900 models N6700 MPS command Action on N8900 models SENSe CURRent RANGe Sets and g...

Страница 117: ...Service and Maintenance Service and Maintenance Pending 116 Agilent N8900 Series Operating and Service Guide...

Страница 118: ...Verification and Calibration Verification and Calibration Pending Agilent N8900 Series Operating and Service Guide 117...

Страница 119: ......

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