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Summary of Contents for N3280A

Page 1: ...underutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing Rentals Demos In...

Page 2: ...nologies Model N3280A Component Test DC Source A Agilent Part No 5964 8248 Microfiche No 5964 8249 Printed in Malaysia September 2004 Artisan Technology Group Quality Instrumentation Guaranteed 888 88...

Page 3: ...r country Agilent Technologies shall pay for return of products to Customer Warranty services outside the country of initial purchase are included in Agilent Technologies product price only if Custome...

Page 4: ...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 ea...

Page 5: ...d electrician install an external switch In position of a bi stable push control Out position of a bi stable push control Caution risk of electric shock Caution hot surface Caution refer to accompanyi...

Page 6: ...M Group 1 Class A Emissions As detailed in Electromagnetic Compatibility EMC Certificate of Conformance Number TCF CC TCF 01 016 2 based on Technical Construction File TCF ANJ13 dated June 21 2001 Ass...

Page 7: ...a new printing date A revised edition incorporates all new or corrected material since the previous printing date Changes to the manual occurring between revisions are covered by change sheets shippe...

Page 8: ...e 19 Packaging Material 19 Additional Items 19 Cleaning 19 Location 20 Bench Operation 20 Rack Mounting 20 Power Connections 21 Connect the Power Cord 21 Output Connections 22 Outputs 1 4 22 Current R...

Page 9: ...tput 39 Power on Initialization 39 Enabling the Output 39 Output Voltage 39 Overvoltage Protection 40 Output Current 40 Output Mode 40 Oscillation Protection 41 Triggering Output Changes 41 Output Tri...

Page 10: ...RRent FETCh ARRay VOLTage 60 FETCh CURRent FETCh VOLTage 60 MEASure ARRay CURRent MEASure ARRay VOLTage 61 MEASure CURRent MEASure VOLTage 61 SENSe CURRent RANGe 61 SENSe FUNCtion 62 SENSe SWEep NPLCy...

Page 11: ...ment Required 83 Performance Verification Tests 84 Measurement Techniques 84 Electronic Load 85 Programming 85 Test Setup 85 Voltage Priority Tests 86 Voltage Programming and Readback Accuracy 86 Posi...

Page 12: ...ent Calibration 99 Negative Current Limit Calibration 100 Positive Current Limit Calibration 100 0 5A Range Current Measurement Calibration 100 15mA Range Current Measurement Calibration 101 Current P...

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Page 14: ...pter 3 Using the programming interface GPIB interface Chapter 4 Programming the unit using SCPI commands SCPI commands SCPI programming examples SCPI language dictionary Chapters 5 and 6 Specification...

Page 15: ...power supply designed to simplify the testing of integrated circuits It has the following key features and performance capabilities High density four isolated outputs in a 2U half rack package Four q...

Page 16: ...4 shows the characteristics of the output when it is being operated as a load sinking power Output Current 512 5mA 10 25V V setting 1 512 5mA 10 25V Output Voltage 3 2 4 OV OV I limit I limit Key Sour...

Page 17: ...ent N3280A output is a four quadrant bipolar dc source that can be operated in either voltage or current priority mode In current priority mode the output is controlled by a bi polar constant current...

Page 18: ...gle timebase for all output channels The number of measurement samples and the sampling interval of the timebase can be explicitly programmed These values will apply to measurements taken on all outpu...

Page 19: ...ings are changed in either voltage priority or in current priority mode an internal timer is started that delays any subsequent measurements At power on or after RST this delay allows the output to se...

Page 20: ...al Items Table 2 1 Items Supplied Item Part Number Description Power Cord contact the nearest Agilent Sales and Support Office A power cord appropriate for your location 4 Output connectors 1253 4893...

Page 21: ...to magnetic fields much lower than 5 gauss Check susceptibility before mounting any display near the dc source Bench Operation Do not block the fan exhaust at the rear of the unit A fan cools the dc...

Page 22: ...it Figure 2 2 identifies all rear panel connections on the dc source 1 4 2 3 5 Figure 2 2 Rear Panel Connectors and Switches Q Q Q Q GPIB connector GPIB connector for computer connection R R R R Trigg...

Page 23: ...an incorrect voltage being applied at the load terminals The 6 pin connector is removable and accepts wires sizes from AWG 28 to AWG 16 Insert the wire into the wire terminal then use a small flat bl...

Page 24: ...0 0843 0 0257 22 5 0 0 0531 0 0162 20 8 33 0 0331 0 0101 18 15 4 0 0210 0 00639 16 19 4 0 0132 0 00402 Voltage Drops and Lead Resistance To optimize the performance and transient response in your test...

Page 25: ...nt will be collected by the circuit and not be included in the output current measurement The guard connection is always enabled and provides a buffered voltage that is at approximately the same poten...

Page 26: ...input The trigger input pin is normally at a TTL high level To generate a trigger you can provide a negative going TTL signal to the trigger input or momentarily connect a short contact closure from t...

Page 27: ...4 3 2 1 0 0 1 Handle Address 5 Table 2 3 Settings for Power Module Configuration Switch GPIB Switch Setting GPIB Switch Setting Address 4 3 2 1 0 Address 4 3 2 1 0 0 0 0 0 0 0 8 0 1 0 0 0 1 0 0 0 0 1...

Page 28: ...to talk or listen Error There is a message in the SCPI error queue S S S S Channel Indicators Channel indicators light to indicate the following channel conditions On The specified output channel is e...

Page 29: ...he voltmeter display to verify the voltage programming 6 Create a variable for a measurement Program Measure Voltage 1 Read the variable value Reads the voltage of output 1 This should agree with the...

Page 30: ...Output 4 non volatile RAM CAL section checksum failed Error 5 Non volatile RAM CONFIG section checksum failed Error 10 RAM selftest Runtime Error Messages Appendix C lists other error messages that m...

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Page 32: ...Electrical and Electronics Engineers 345 East 47th Street New York NY 10017 USA The WEB address is www ieee org SCPI References The following documents will assist you with programming in SCPI Standa...

Page 33: ...Parentheses Items within parentheses are used in place of the usual parameter types to specify a channel list The notation 1 3 specifies a channel list that includes channels 1 2 and 3 The notation 1...

Page 34: ...Subsystems In order to combine commands from different subsystems you need to be able to reset the header path to a null string within a message You do this by beginning the command with a colon which...

Page 35: ...r or keyword followed by a message terminator The message unit may include a parameter after the header The parameter can be numeric or a string ABORt NL VOLTage 20 NL Channel List Parameter The chann...

Page 36: ...rminator A terminator informs SCPI that it has reached the end of a message Three permitted messages terminators are newline NL which is ASCII decimal 10 or hex 0A end or identify END both of the abov...

Page 37: ...allel commands A user should use some form of synchronization before assuming that these commands have completed OUTPUT STATE INITIATE VOLT OUTPUT PROTECTION CLEAR CURR FUNC MODE CURR LIM VOLT ALC BWI...

Page 38: ...nt status register to be set when all pending operations are completed The controller can either poll for this status bit or set up an SRQ when this occurs Internal synchronization is required when th...

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Page 40: ...state set to OFF In this state the output voltage is set to 0 The following commands are given implicitly at power on RST SRE 0 STAT PRES CLS ESE 0 RST is a convenient way to program all parameters to...

Page 41: ...R LIM MAX channel list When operating in current priority mode the dc source has a programmable output current The maximum output current that can be programmed in current priority mode is 0 5125 mA T...

Page 42: ...sing the following command CURR LIM BWID n channel list where n is one of 2 bands 30000 10000 NOTE If the output is on programming a different compensation band will cause the output to cycle OFF then...

Page 43: ...l list CURR LIM MODE STEP channel list In Step mode the triggered value becomes the immediate value when the trigger is received If the mode is set to Fixed nothing will happen when a trigger is recei...

Page 44: ...ramming Use a triggered measurement when you need to synchronize the data acquisition with a transition in the output voltage or current Then use the FETCh queries to return the measurement data FETCh...

Page 45: ...can vary both the number of data points in a measurement sample as well as the time between samples This is illustrated in figure 5 2 SENS SW E PO IN of points SENS SW E TINT tim e Figure 5 2 Commands...

Page 46: ...on of the Rectangular window is to specify an integral number of power line cycles with SENSe SWEep NPLCycles before making a measurement Another way of dealing with ac line ripple is to use a Hanning...

Page 47: ...returns the trigger system to the idle state ABORt RST The INITiate commands move the trigger system from the idle state to the initiated state This enables the measurement system to receive triggers...

Page 48: ...priority mode is a zero ohm short circuit To change the source settling delay you must first change the source delay mode to MANual then set a value for the delay time Use the following commands SOUR...

Page 49: ...n in figure 5 4 you can move the block of data being read into the acquisition buffer with reference to the acquisition trigger This permits pre trigger or post trigger data sampling To offset the beg...

Page 50: ...L OR PON CME EXE DDE QYE OPC 0 2 3 4 5 7 1 4 8 16 32 128 1 4 8 16 32 128 EVENT ENABLE STANDARD EVENT STATUS OUTPUT QUEUE QUEUE NOT EMPTY DATA DATA DATA STATUS BYTE SERVICE REQUEST ENABLE LOGICAL OR SE...

Page 51: ...us Byte and Service Request Enable Registers The unit is waiting for a trigger Questionable status summary bit Message Available summary bit Event Status Summary bit Master Status Summary bit Request...

Page 52: ...le register functions similarly to the enable registers of the Operation and Questionable status groups Command Action ESE programs specific bits in the Standard Event enable register ESR reads and cl...

Page 53: ...nerate a service request RQS at the Status Byte register The required register programming is as follows Step 1 Program the Operation Status PTR register to allow a positive transition at bit 6 to be...

Page 54: ...will clarify or enhance your understanding of the original command or query Order of Presentation The dictionary is organized according to the following functions calibration display measurement outpu...

Page 55: ...r CURRent DC list Returns output current dc measurement VOLTage DC list Returns output voltage dc measurement MEASure ARRay CURRent DC max_val list Digitizes and returns the instantaneous output curre...

Page 56: ...ables disables overvoltage protection on the selected output STATus OPERation EVENt list Returns the value of the event register CONDition list Returns the value of the condition register ENABle n lis...

Page 57: ...ice request enable register STB Return status byte TRG Trigger TST Perform selftest then return result WAI Hold off bus until all device commands done Table 6 3 Output Programming Parameters Parameter...

Page 58: ...Rent LEVel channel Parameters None Examples CAL CURR 1 start current calibration Related Commands CAL CURR LIM CAL CURR MEAS CALibrate CURRent LIMit POSitive CALibrate CURRent LIMit NEGative This comm...

Page 59: ...TE Returned Parameters SRD CALibrate LEVel This command selects the next point in the calibration sequence P1 is the first calibration point P2 is the second calibration point Command Syntax CALibrate...

Page 60: ...de 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 n...

Page 61: ...ent measurement range the bandwidth detector of the dc source and the data acquisition sequence FETCh ARRay CURRent FETCh ARRay VOLTage These queries return an array containing either the digitized ou...

Page 62: ...easurement time is specified by SENSe SWEep NPLCycles NOTE You can specify an optional maximum value parameter This lets you use a different current range for a single measurement without having to ch...

Page 63: ...ues are chosen to sample the maximum number of points possible and to provide the best noise filtering Command Syntax SENSe SWEep NPLCycles NRf Parameters 1 through n RST Value 0 00912 for 60Hz line 0...

Page 64: ...ters NR3 Related Commands SENS SWE POIN SENS SWE OFFS MEAS ARR SENSe WINDow This command sets the window function that is used in dc measurement calculations The following functions can be selected HA...

Page 65: ...Query Syntax OUTPut STATe channel list Returned Parameters NR1 0 1 OUTPut OSCProtect This command enables or disables the oscillation protection on the selected output Command Syntax OUTPut OSCProtect...

Page 66: ...and negative current limits The pending triggered limit is a stored value that applies when a trigger occurs To respond to a trigger the SOUR CURR LIM MODE must be set to STEP and the trigger system...

Page 67: ...arameters CRD SOURce DELay This command sets the delay when SOUR DEL MODE is set to MANUAL If an output is changed and a subsequent measurement is requested the measurement will be delayed to allow th...

Page 68: ...OLTage ALC BWIDth Nrf channel list Parameters 10000 20000 30000 RST Value 30000 Examples VOLT ALC BWID 10000 1 Query Syntax SOURce VOLTage ALC BWIDth channel list Returned Parameters NR3 SOURce VOLTag...

Page 69: ...enables or disables the overvoltage protection OVP function The command only applies in voltage priority mode When enabled the output of the unit will shut down and the output relays will open when t...

Page 70: ...ected output is in positive voltage limit1 CC The selected output is in constant current1 CL The selected output is in negative current limit2 CL The selected output is in positive current limit2 CV T...

Page 71: ...ER NTR 32 1 STAT OPER PTR 1312 1 Query Syntax STAT OPER NTR channel list STAT OPER PTR channel list Returned Parameters NR1 register value STATus PRESet This command sets all defined bits in the Statu...

Page 72: ...These registers serve as polarity filters between the Questionable Enable and Questionable Event registers to cause the following actions K When a bit of the Questionable NTR register is set to 1 the...

Page 73: ...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 other error codes Query Syntax SYST...

Page 74: ...None Examples ABOR Related Commands INIT RST TRG TRIG INITiate NAME This command controls the enabling of both output and measurement triggers When a trigger is enabled an event on a selected trigger...

Page 75: ...Nsient This command generates an output trigger Output triggers affect the following functions voltage current and current limit To program an output trigger you must specify a trigger level for the s...

Page 76: ...Red 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 Table 6 6 Bit Configuration of...

Page 77: ...that affect output voltage current or state relays and trigger actions are overlapped with subsequent commands sent to the dc source The OPC command provides notification that all overlapped commands...

Page 78: ...responding Status Byte Register bit and all such enabled bits then are logically ORed to cause Bit 6 of the Status Byte Register to be set When the controller conducts a serial poll in response to SRQ...

Page 79: ...Execute Trigger GET command Command Syntax TRG Parameters None Related Commands ABOR INIT TRIG IMM GET TST This query causes the dc source to do a self test and report any errors 0 indicates that the...

Page 80: ...Limit Current 200 V 10 A 10 A N A N A N A N A 10nA Output Transient Response Voltage 10kHz 5 20kHz 30kHz Current6 60 s 45 s 35 s N A N A N A N A 90 s 1Voltage accuracy specification in voltage priorit...

Page 81: ...the output Voltage 0 5A Curr Range 15mA Curr Range 0 5mA Curr Range 1 3ms 5 points 1 3ms 5 points 1 3ms 5 points 1 3ms 5 points Peak Current Limit not programmable 1 3A typical 5mA typical CV to CL mo...

Page 82: ...Compliance Listing pending Certified to Conforms to Complies with UL 3111 1 CSA 22 2 No 1010 1 IEC 1010 1 EN 61010 1 EMC directive 89 336 EEC ISM group 1 Class A Calibration Interval 1 Year Dimensions...

Page 83: ...se M agnitude VOLTAGE PRIORITY bandwidth 20kHz 64 32 16 8 4 2 1 90 45 0 45 90 o o o o o 1k FREQUENCY Hz 10k 100k CURRENT LIMIT bandwidth 10kHz 1M PHASE degrees Phase Magnitude 8 4 2 1 0 5 0 25 0 125 9...

Page 84: ...iven for performing the procedures from a controller over the GPIB IMPORTANT Perform the Programming Accuracy and Readback Accuracy tests before calibrating your dc source If the dc source passes the...

Page 85: ...voltage transient response 3 3 3uF film type capacitors in parallel 3 0160 7308 or equivalent Capacitor for current transient response 0 47uF film type capacitor 1060 0970 or equivalent Performance V...

Page 86: ...ce from a GPIB controller when performing the tests The test procedures are written assuming that you know how to program the dc source remotely from an GPIB controller Also when performing the verifi...

Page 87: ...ramming Accuracy 10V The difference between the DVM reading and the measurement query result should be within the limits specified under Readback Accuracy 10V 6 Program the output voltage to full scal...

Page 88: ...current reading on the ammeter The difference between the ammeter reading and the measurement query result should be within the limits specified Readback Accuracy 0 5mA Current Limit Negative Current...

Page 89: ...e are not programmable Action Program Commands 1 Reset the dc source and connect an ammeter directly across the HI and LO terminals as shown in Figure B 1a RST resets the dc source to its default sett...

Page 90: ...the measurement perform steps e and f Voltage Priority Constant Voltage Load Effect This test measures the change in output voltage resulting from a change in output current from about zero amps to a...

Page 91: ...performance test record card under Voltage Priority Source Effect Current Voltage Priority Current Limit Load Effect Test This test measures the change in output current resulting from a change in out...

Page 92: ...he output current reading on the ammeter full load current value The difference between the two current readings is the Load Effect current and should be within the limits listed in the performance te...

Page 93: ...m the output voltage to the maximum positive value 10 25V and the current limit to 0 5A OUTP ON 1 VOLT 10 25 1 CURR LIM 0 5 1 3 Read back the N3280A status to be sure that it s in the CL mode This que...

Page 94: ...e to a variable voltage transformer or ac source Set the transformer to nominal line voltage Connect the output as shown in Figure B 1a with an ammeter directly across the Hi and Lo output terminals 2...

Page 95: ...e test record card under Voltage Priority PARD Voltage peak to peak 4 Disconnect the oscilloscope and connect an ac rms voltmeter in its place The rms voltage reading should be within the rms limit in...

Page 96: ...n the load current using an RC network of a 10 F capacitor and 0 2 ohm resistor across the output The test must be performed in all three bandwidths 10kHz 20kHz and 30kHz Action Program Commands 1 Tur...

Page 97: ...capacitor 0 47 F close to the function generator Keep all leads as short as possible OUTP OFF 1 2 Turn on the dc source and program the Current Priority mode Program the current to zero amps OUTP ON...

Page 98: ..._____ Relative Humidity ___________________ Options _____________________________ Nominal Line Frequency __________________ Firmware Revision ____________________ Special Notes Test Equipment Used Des...

Page 99: ..._________ _________ _________ _________ _________ _________ _________ _________ 2mV Vout 12mV Vout 12mV Iout 0 7mA Iout 0 7mA Iout 15 A Iout 15 A Iout 0 7 A Iout 0 7 A Load Effect Voltage Current limi...

Page 100: ...n of the other 4 As each subsystem s procedure is completed the instrument calculates new calibration constants and begins using them These constants are not saved in nonvolatile memory until the CAL...

Page 101: ...er directly to output 1 2 Select positive current limit calibration for output 1 CAL CURR LIM POS 1 3 Select the first calibration point OPC prevents processing of all subsequent commands to ensure th...

Page 102: ...input of the 3458A multimeter directly to output 1 2 Select current calibration for output 1 CAL CURR 1 3 Select the first calibration point OPC prevents processing of all subsequent commands to ensu...

Page 103: ...o operate without requiring any password change the password to 0 zero CAL PASS password 4 Save the password CAL SAVE 5 Exit Calibration mode RST also exits calibration mode CAL STAT OFF Calibration E...

Page 104: ...ble C 1 Error Numbers Error Number Error String Description Explanation Examples Command Errors 100 through 199 sets Standard Event Status Register bit 5 100 Command error generic 101 Invalid characte...

Page 105: ...large for this device 223 Too much data out of memory block string or expression too long 224 Illegal parameter value device specific 225 Out of memory 270 Macro error 272 Macro execution error 273 Il...

Page 106: ...L not enabled 404 Computed readback cal constants are incorrect 405 Computed programming cal constants are incorrect 406 Incorrect sequence of calibration commands 407 CV or CC status is incorrect for...

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Page 108: ...4 Rotate the cylinder so that the correct line voltage appears in the location under the window 5 Pull the fuse drawer out and check if the fuse is correct for the line voltage that you have selected...

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Page 110: ...connectors These mating parts were not shipped with the unit Mating Connector Part Numbers CHG 2010 J01010 KEP Output connectors for wires 10 terminal output plug for connecting load and sense wires...

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Page 112: ...command syntax 53 common commands 75 CLS 75 ESE 75 ESR 75 IDN 76 OPC 76 OPT 76 RST 77 SRE 77 STB 77 TRG 78 TST 78 WAI 78 constant voltage tests 84 controller connections 25 conventions used in this g...

Page 113: ...S VOLT 61 measurement delay 17 overview 17 measurement points 44 measurement samples 44 measurement trigger function 47 generating 47 initiating 46 output delay 47 source 46 measurement trigger system...

Page 114: ...62 SENS SWE POIN 63 SENS SWE TINT 63 SENS WIND 63 sense connections 22 servicing operation status 52 servicing questionable status events 52 source commands 64 SOUR CURR IMM 65 SOUR CURR LIM IMM 65 S...

Page 115: ...protection 40 voltage priority 15 voltage programming 86 W waiting for measurement results 48 warranty 2 wire current ratings 23 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOU...

Page 116: ...gies Canada Inc 5150 Spectrum Way Mississauga Ontario L4W 5G1 tel 1 877 894 4414 Australia New Zealand Agilent Technologies Australia Pty Ltd 347 Burwood Highway Forest Hill Victoria 3131 tel 1 800 62...

Page 117: ...mand SOURce CURRent LIMit BWIDth Appendix A has been updated to include the following information Programming accuracy temperature coefficients Readback accuracy temperature coefficients Output impeda...

Page 118: ...uipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentat...

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