Agilent Technologies n3306a User Manual

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USER’S GUIDE
Agilent Technologies
DC Electronic Loads
Models N3300A, N3301A, N3302A,
N3303A, N3304A, N3305A and N3306A
Part No. 5964-8196 Printed in Malaysia
Microfiche No. 5964-8197 October, 2001
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1 2 3 4 5 6 ... 101 102

Summary of Contents

Page 1 - USER’S GUIDE

USER’S GUIDEAgilent TechnologiesDC Electronic LoadsModels N3300A, N3301A, N3302A,N3303A, N3304A, N3305A and N3306A

Page 2 - Warranty Information

111Quick ReferenceThe Front Panel -At a Glance j15-character display showschannel, voltage and currentmeasurements. k Annunciators indicateoperating

Page 3 - Safety Summary

Index103Address, 57Error, 57Interface, 57Local, 57RCL, 57Save, 57Shift, 57Ttransient, 26continuous, 26pulse, 26toggled, 26transientscontinuous mode, 6

Page 4

104Agilent Sales and Support OfficeFor more information about Agilent Technologies test and measurement products, applications, services, and fora cur

Page 5 - Declaration Page

Manual UpdatesThe following updates have been made to this manual since its publication.6/1/01Table 2-1 has been updated with new option part numbers.

Page 6 - Printing History

1 - Quick Reference12The Rear Panel At a GlanceQ Control connector R Input binding post S GPIB connector T RS-232 interfaceconnector1 2 34567U Po

Page 7 - Table of Contents

Quick Reference - 113 Front Panel Number Entry Enter numbers from the front panel as follows: Use the Entry Scroll keys to adjust the input setting in

Page 8

1 - Quick Reference14 Front Panel Annunciators φφφφ1 A list is initiated or running. Prot Indicates that a channel protection feature is activeon any

Page 9

Quick Reference - 115Front Panel Menus - At a GlanceADDRESS 5Sets the GPIB AddressINTF GPIBSelects an interface (GPIB or RS232)BAUDRATE 300Selects bau

Page 10 - The Front Panel -At a Glance

1 - Quick Reference16Front Panel Menus - continuedVOLTSets the input voltageV:MODESets the voltage mode (FIXED, LIST)V:RANGSets the input voltage rang

Page 11 - W Sense switch

Quick Reference - 117SCPI Programming Commands - At a Glance NOTE Most [optional] commands have been omitted for clarity. Refer to the Programming Gu

Page 12 - Front Panel Number Entry

1 - Quick Reference18SCPI Commands - continued [SOURce:]LIST (continued) :VOLTage [:LEVel] <n> {,<n>} :POINts? :RANGe <n> {,<

Page 13 - Immediate Action Keys

192General InformationDocument OrientationThis manual describes the operation of the Agilent Model N3300A, N3301A, N3302A, N3303A N3304A,N3305A and N3

Page 14 - Quick Reference - 1

2 - General Information20Safety ConsiderationsThis electronic load is a Safety Class 1 instrument, which means it has a protective earth terminal. Th

Page 15 - Front Panel Menus - continued

2Warranty InformationCERTIFICATIONAgilent Technologies certifies that this product met its published specifications at time of shipment from the facto

Page 16

General Information - 221The N3301A is a DC Electronic Load Mainframe that is functionally identical to the N3300A, but is a half-rackwidth with only

Page 17 - SCPI Commands - continued

2 - General Information22Operating ModesThe three modes of operation are:♦ Constant current (CC).♦ Constant voltage (CV).♦ Constant resistance (CR)

Page 18 - General Information

General Information - 223Triggered Current LevelA current level can be preset (stored in the electronic load) allowing the input to be updated when a

Page 19 - Description

2 - General Information24Figure 2-2. Constant Resistance ModeImmediate Resistance LevelThe resistance level can be set at the front panel or via the

Page 20 - Remote Programming

General Information - 225(VOLT:RANG command). When you program a voltage value, the electronic load automatically selects therange that corresponds t

Page 21 - Operating Modes

2 - General Information26Transient OperationTransient operation enables the module to periodically switch between two load levels, as might be require

Page 22 - Constant Resistance (CR) Mode

General Information - 227List OperationList mode lets you generate complex sequences of input changes with rapid, precise timing, which may besynchron

Page 23 - Constant Voltage (CV) Mode

2 - General Information28If the ac line is selected via the GPIB as the trigger source, triggers will be generated once for each cycle of acinput powe

Page 24

General Information - 229Therefore, both minimum transition time and slew rate must be considered when determining the actualtransition time. This is

Page 25 - Transient Operation

2 - General Information30Input ControlShort On/OffA module can simulate a short circuit at its input by turning the load on with full-scale current.

Page 26 - Triggered Operation

3Safety SummaryThe following general safety precautions must be observed during all phases of operation of this instrument. Failure tocomply with thes

Page 27

General Information - 231Caution To protect the electronic load from possible damage, the input voltage must not exceed themaximum input voltage rati

Page 28

2 - General Information32remain set until they are reset. If the OT condition still exists when the reset is executed, the module's input willre

Page 29 - Protection Features

General Information - 233Saving and Recalling SettingsThe electronic load has internal registers in which settings (mode, current, voltage, resistance

Page 30

2 - General Information3420A Input (programmed via GPIB or front panel)± 1V (2 V peak-peak) 1 kHz external programming signalThe external programming

Page 31

General Information - 235As shipped from the factory, front panel measurements for input voltage and current are calculated from a totalof 1000 readin

Page 32 - External Control Signals

373InstallationInspectionDamageWhen you receive your electronic load, inspect it for any obvious damage that may have occurred duringshipment. If the

Page 33 - Input Measurements

3 - Installation38Installing the ModulesProcedure1. With the mainframe off, disconnect the power cord and remove the top cover by loosening the screw

Page 34 - Measurement Ranges

Installation - 3396. Connect the ribbon cable to the adjacent connector pins in the GPIB board (or adjacent module). Make surethe connectors are pro

Page 35 - Installation

3 - Installation40Figure 3-3A. N3300A Outline DiagramFigure 3-3B. N3301A Outline Diagrammmmm mm mm mmFigure 3-3C. N3300A Connector Diagram

Page 36 - Installing the Modules

Installation - 341Bench OperationA fan cools the electronic load by drawing air through the top and sides and exhausting it out the back.Minimum clear

Page 37 - Channel Number

4SAFETY SYMBOLSDirect currentAlternating currentBoth direct and alternating currentThree-phase alternating currentEarth (ground) terminalProtective ea

Page 38 - 3 - Installation

3 - Installation42Input ConnectionsPower Cord1. Connect the power cord to the IEC 320 connector on the rear of the unit. If the wrong power cord was

Page 39 - Rack Mounting

Installation - 343Figure 3-6a. Manual Connector1. Strip the back wire insulation as indicatedWire Size Strip backAWG 4 6 mm (0.65 in)AWG 6 or 8 13 mm

Page 40 - Input Connections

3 - Installation44spacerwires exiting at topwires exiting at bottomsafety cover securedspacerinsulatedwire lug(AMP 52266-3)4 AWGwire max.tightencovers

Page 41

Installation - 345Table 3-2. Stranded Copper Wire Ampere CapacityWire Size Ampacity Notes:AWG Cross SectionArea in mm222 5.020 8.330.75 1018 15.41 13

Page 42 - Wire Considerations

3 - Installation46Control ConnectorA 14-pin connector and a quick-disconnect mating plug are provided on each module for connecting remotesense leads,

Page 43

Installation - 347Sense SwitchA local/remote sense switch is provided on each module. Unless you are using remote sensing, make sure thatthe sense sw

Page 44 - Control Connector

3 - Installation48Computer ConnectionsThe electronic load can be controlled through a GPIB interface or through an RS-232 interface.GPIB InterfaceEach

Page 45 - Sense Switch

Installation - 349Application ConnectionsLocal Sense ConnectionsFigure 3-10 illustrates a typical setup with module number 1 connected for constant cu

Page 46 - 6 7 8 9

3 - Installation50Figure 3-11. Remote SensingFigure 3-12. Parallel OperationN3300AN3300A

Page 47 - Application Connections

Installation - 351In Figure 3-12, all lead connections are terminated at the source. Each module is connected to the source usingseparate wires. Usi

Page 48 - Figure 3-11. Remote Sensing

5Declaration PageDECLARATION OF CONFORMITYAccording to ISO/IEC Guide 22 and CEN/CENELEC EN 45014Manufacturer's NameAgilent Technologies, Inc.Manu

Page 49 - Low Voltage Operation

534Turn-On CheckoutIntroductionSuccessful tests in this chapter provide a high degree of confidence that the electronic load is operating properly.For

Page 50 - Turn-On Checkout

4 - Turn-On Checkout546.Depress the Meter key followed bythe scroll key. 1 50 W The display shows the computed inputpower for the selected channe

Page 51 - In Case of Trouble

555Front Panel OperationIntroductionHere is what you will find in this chapter:• A complete description of the front panel controls• Front panel pro

Page 52 - Front Panel Operation

5 - Front Panel Operation56jjjjDisplay15-character fluorescent display for showing measurements and programmed values.kkkkAnnunciatorsAnnunciators lig

Page 53

Front Panel Operation - 557System KeysRefer to the examples later in this chapter for more details on the use of these keys.SYSTEM Local Recall Ident

Page 54

5 - Front Panel Operation58Function keysRefer to the examples later in this chapter for more details on the use of these keys.FUNCTION Meter Protect S

Page 55 - Function keys

Front Panel Operation - 559Scrolling Keys Scrolling keys let you move through the commands in the presently selected functionmenu. Press ▼ to bring

Page 56 - Metering Keys

5 - Front Panel Operation60Input Control KeysInput control keys control the input functions of the electronic load.Press this key to select another ch

Page 57 - Input Control Keys

Front Panel Operation - 561Transient Control KeysTransient control keys control the transient functions of the electronic load.Press this key to acces

Page 58 - List Control Keys

5 - Front Panel Operation62Entry Keys Enter7894561230. Input Input E - Clear EntryFigure 5-4 Entry KeysThese keys perform two functions. In Meter mod

Page 59 - Entry Keys

6Acoustic Noise InformationHerstellerbescheinigungDiese Information steht im Zusammenhang mit den Anforderungen der Maschinenläminformationsverordnung

Page 60

Front Panel Operation - 563Examples of Front Panel ProgrammingYou will find these examples on the following pages:1. Using the front panel display.2.

Page 61 - 5 - Front Panel Operation

5 - Front Panel Operation6410. On the Function keypad, press Input On/Off to turn input on. Dis annunciator off11. To make minor changes to an existi

Page 62

Front Panel Operation - 5653 - Programming Transient OperationTransient operation can be used in the CC, CR or CV mode. It causes the selected channel

Page 63

5 - Front Panel Operation66Set transient operation for Pulse modeIn this example, assume that the CC mode is active, the slew rate is at the factory d

Page 64 - 4 - Programming Lists

Front Panel Operation - 567Figure 5-7. Toggled Transient OperationAction Display1. On the Function keypad, press Current. On the Entry keypad, press

Page 65 - List Count = 1 List Count = 2

5 - Front Panel Operation68Trigger01 2 3 4 5List Count = 1 List Count = 2Figure 5-8. List SequenceAction Display4. Access the List menu again and pres

Page 66

Front Panel Operation - 5695 - Querying and Clearing Output Protection and ErrorsWhen overvoltage, overcurrent, or overtemperature condition occurs, t

Page 67 - 7 - Setting the GPIB Address

5 - Front Panel Operation70Action Display1.Displays the minimum currentDisplays the rms voltageDisplays the input powerDisplays the maximum powerDispl

Page 68 - Specifications

71ASpecificationsTable A-1 lists the specifications for the different load models. Specifications indicate warranted performance inthe 25°C ±5°C regio

Page 69 - A - Specifications

A - Specifications72Table A-1. Specifications (continued)N3302A N3303A N3304A N3305A N3306AConstant Current Mode2Low Range/High Range 3A / 30A 1A / 1

Page 70 - Specifications - A

7Table of ContentsWarranty Information ...

Page 71

Specifications - A73Table A-2 lists the supplemental characteristics, which are not warranted but are descriptions of typicalperformance determined ei

Page 72 - Equipment Required

A - Specifications74Table A-2. Supplemental Characteristics (continued)N3302A N3303A N3304A N3305A N3306ARipple and Noise (20Hz-10MHz) Current (rms

Page 73 - Performance Tests

75BPerformance Test and Calibration ProceduresIntroductionThis appendix contains test procedures for checking the operation and calibration of the Agi

Page 74 - CV Mode Tests

B - Performance Test and Calibration76Performance TestsIMON Zero VerificationThis test verifies that IMON Zero is within calibration. IMON zero must b

Page 75 - CV Mode Regulation Test

Performance Test and Calibration - B776. Press [ CURR ] [ 1 ] ( except N3303A press [ CURR ] [ 0.1 ] ). Press [ CURR ]. Scroll until display reads C

Page 76 - CR Mode Tests

B - Performance Test and Calibration784. Turn on the power source. Set the power source voltage and current to the values listed in the following tab

Page 77

Performance Test and Calibration - B79CR Mode TestsThese tests verify that the module operates in CR mode and the resistance programming is within spe

Page 78

B - Performance Test and Calibration806. Set power source voltage and current values as listed in following table.N3302A N3303A N3304A N3305A N3306AP

Page 79 - Pulse Width Accuracy

Performance Test and Calibration - B816. Set power source voltage and current values as listed in following table.N3302A N3303A N3304A N3305A N3306AP

Page 80

B - Performance Test and Calibration82Pulse Width AccuracyThis test verifies that the transient generator pulse width accuracy is within specification

Page 81

8Cleaning ...

Page 82

Performance Test and Calibration - B83Agilent N3302A Verification Test RecordTest Description MinimumSpecificationResults MaximumSpecificationConstant

Page 83

B - Performance Test and Calibration84Agilent N3303A Verification Test RecordTest Description MinimumSpecificationResults MaximumSpecificationConstant

Page 84

Performance Test and Calibration - B85Agilent N3304A Verification Test RecordTest Description MinimumSpecificationResults MaximumSpecificationConstant

Page 85 - IMON_INV

B - Performance Test and Calibration86Agilent N3305A Verification Test RecordTest Description MinimumSpecificationResults MaximumSpecificationConstant

Page 86

Performance Test and Calibration - B87Agilent N3306A Verification Test RecordTest Description MinimumSpecificationResults MaximumSpecificationConstant

Page 87 - Calibration

B - Performance Test and Calibration88N330xA Module (top view)Figure B-1. I MON ZERO CALIBRATIONAgilent 3458 or34401 DVMINPUT TERMINALSMUST BE OPEN

Page 88

Performance Test and Calibration - B89+ _N330xA ModuleFigure B-3. VOLTAGE CALIBRATIONAgilent 3458 or34401 DVM + _N330xA ModuleFigure B-4. RESI

Page 89

B - Performance Test and Calibration90CalibrationParameters CalibratedThe following parameters may be calibrated.• External Current Monitor ( Imon )

Page 90

Performance Test and Calibration - B91IMON, IPROG and CURRENT Calibration Program10 ! This program will calibrate Imon, Iprog and Current20 ! for lo

Page 91

B - Performance Test and Calibration92540 INPUT "Enter value of high range current shunt in ohms",Rshunt550 DISP "You have entered &q

Page 92 - VOLTAGE Calibration Program

9PERFORMANCE TEST AND CALIBRATION PROCEDURES ... 75Introduction ...

Page 93

Performance Test and Calibration - B931110 !1120 OUTPUT @Ld;"CAL:IPR:LEV P4"1130 !1140 PRINT TABXY(20,20),"Calibrating IMON & IP

Page 94

B - Performance Test and Calibration941690 CLEAR SCREEN1700 !1710 OUTPUT @Ld;"INP:STAT ON"1720 OUTPUT @Ld;"CAL:LEV P1"1730 !1

Page 95

Performance Test and Calibration - B95VOLTAGE Calibration Program10 ! This program calibrates the voltage mode for load modules20 ! N3302A, N3303A,

Page 96

B - Performance Test and Calibration96540 !550 INPUT "Measure voltage at +/- sense terminals and enter value in volts",Vp1560 !570 OUTPUT

Page 97

Performance Test and Calibration - B97RESISTANCE Calibration Program10 ! This program calibrates the resistance mode20 ! for load modules N3302A, N3

Page 98

B - Performance Test and Calibration98550 PRINT TABXY(10,12);"Set power source to voltage and current settings fromTable B-2"560 PRINT TAB

Page 99

Performance Test and Calibration - B991080 Rp2=Vt2/Ip21090 OUTPUT @Ld;"CAL:DATA";Rp21100 OUTPUT @Ld;"INP:STAT OFF"1110 !1120 ! *

Page 100

B - Performance Test and Calibration1001620 CLEAR SCREEN1630 !1640 PRINT TABXY(10,12);"Set power source to voltage and current settings from&q

Page 101

101Index-- -- -- -- --, 6900 ... 9, 6288mm screw terminal connector, 43Aaccessories, 20airflow, 41annunciatorsAddr, 56Cal, 56CC, 56CR, 56CV, 56Dis, 56

Page 102 - Manual Updates

Index102GGPIB, 70address, 70connections, 48ground, earth, 20guide, user’s, 19Hhistory, 6Iinputcurrent setting, 63resistance setting, 63voltage setting

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