Agilent Technologies Comprehensive Manual for Portable Generators: N3300A, N3302A, N3303A, N3304A
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2 - General Information

Input Control

Short On/Off

A module can simulate a short circuit at its input by turning the load on with full-scale current. The short circuit can be toggled on/off at the front panel using the SHORT command in the Func menu, or via the GPIB (INPUT:SHORT ONOFF command). The short on/off change uses the slew rate setting of the active mode and range.

The actual value of the electronic short is dependent on the mode and range that are active when the short is turned on. In CV mode it is equivalent to programming zero volts. In CC mode it is equivalent to programming full-scale current for the present current range. In CR mode it is equivalent to programming the minimum resistance for the present resistance range.

Note that turning the short on in CV mode may cause the load to draw so much current that the software current limit operates, which may turn the input off.

Turning the short circuit on does not affect the programmed settings, and the load input will return to the previously programmed values when the short is turned off.

Input On/Off

A module's input can be toggled on/off at the front panel, or via the GPIB (INPUT ONOFF command). The input on/off change does not use the slew rate setting so the input will change at the maximum slew rate.

Turning the input off (zero current) does not affect the programmed settings. The input will return to the previously programmed values when the input is turned on again. Note that the Input On/Off command supersedes the mode commands and Short On/Off command.

Protection Features

Each load module includes the following protection features:

•Overvoltage.

•Overcurrent (hardware and software).

•Overpower.

•Overtemperature.

•Reverse Voltage.

The appropriate bit(s) in the mainframe's status registers are set when any of the above protection features are active. Also, the Prot annunciator comes on and the front-panel alphanumeric display indicates which condition(s) have been detected. For example, if an overtemperature (OT) condition has been detected causing a module's input to be turned off (protection shutdown, PS), the display will indicate "PS OT".

Resetting Latched Protection

All of the protection features latch (remain set) when they are tripped, except for the hardware overcurrent and reverse voltage. The latched protection features can be reset via the GPIB (*RST or INP:PROT:CLE commands) or at the front panel. Of course, the condition that caused the protection feature to trip must be removed or it will trip again as soon as it is reset.

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Contents USER’S Guide Certification Warranty InformationGeneral Safety SummarySafety Symbols Declaration of Conformity DeclarationPrinting History Acoustic Noise InformationTable of Contents TURN-ON Checkout 101 Front Panel -At a Glance Quick ReferenceQuick Reference Instrument ConfigurationRear Panel At a Glance Use the Function keys and Entry keys to enter a new value Front Panel Number EntryImmediate Action Keys Front Panel AnnunciatorsFront Panel Menus At a Glance Voltage Quick Reference Front Panel MenusComplete description of all programming commands Scpi Programming Commands At a GlanceQuick Reference Scpi Commands Getting Started Map Task Where to find informationDocument Orientation Description Safety ConsiderationsOptions and Accessories Remote Programming Features and CapabilitiesFront Panel Controls Immediate Current Level Constant Current CC ModeOperating Modes General Information Triggered Current Level Constant Resistance CR ModeTransient Current Level Software Current LimitTransient Resistance Level Constant Voltage CV ModeTriggered Resistance Level Transient Voltage Level Triggered Voltage LevelContinuous Transient Operation Transient OperationPulsed Transient Operation Toggled Transient OperationList Operation Triggering a preset levelTriggered Operation Triggering a transient pulseRisetime Transition Limitation Slew Rate and Minimum Transition TimeTransition Time Slew Rate Examples Resetting Latched Protection Protection FeaturesInput Control Short On/OffOvertemperature OverpowerGeneral Information Overvoltage OvercurrentStatus Reporting Reading Remote Programming ErrorsReverse Voltage External Control Signals Saving and Recalling SettingsRemote Sensing Monitor OutputsPort On/Off FaultInput Measurements DC Measurements Power MeasurementsRMS Measurements Minimum and Maximum MeasurementsInspection CleaningDamage Packaging Material Items SuppliedInstallation Installing the ModulesProcedure Channel Number Location3A. N3300A Outline Diagram Do not block the fan exhaust at the rear of the unit Bench OperationRack Mounting Input Connections Power CordManually-Tightened Connectors 6a. Manual Connector 8mm Screw Terminal Connector option UJ1Wire Considerations Maximum Wire Lengths to Limit Voltage Drops Stranded Copper Wire Ampere CapacityWire Size Ampacity A1-A3 Control ConnectorA11 and A10 +S and -STrigger and Digital Connections Sense SwitchRS-232 Interface Computer ConnectionsGpib Interface Local Sense Connections Application ConnectionsRemote Sense Connections Parallel Connections11. Remote Sensing 13. Zero Volt Loading Low Voltage OperationCheckout Programming Values Checkout ProcedureIntroduction Selftest Errors Error MessagesSelftest Error Codes Case of TroubleFront Panel, Overall View Front Panel DescriptionFront Panel Operation System Keys Display Command FunctionImmediate Action Keys Function keysDisplay Measurement Scrolling KeysMetering Keys Inpshor Input Control KeysList Control Keys Transient Control KeysTrigger Control Keys Entry Keys Entry KeysSet the constant current mode input Using the Front Panel DisplayExamples of Front Panel Programming Programming Constant Current, Voltage and Resistance ModesSet the constant voltage mode input Set the constant resistance mode inputProgramming Transient Operation Set transient operation for Continuous modeSet transient operation for Toggled mode Set transient operation for Pulse modeTmode Togg Programming ListsList Sequence Query and Clear Errors as follows Querying and Clearing Output Protection and ErrorsMaking Basic Front Panel Measurements Use the Meter menu for making front panel measurementsStoring and Recalling Instrument States Setting the Gpib AddressSet the Gpib address as follows Save an instrument state in location 0 as followsSpecifications Specifications Table A-2. Supplemental Characteristics Specifications aN3302A N3303A N3304A N3305A N3306A SpecificationsEquipment Required Performance Test and Calibration ProceduresPerformance Tests CC Mode TestsImon Zero Verification Performance Test and CalibrationCC Mode Regulation Test CV Mode TestsPerformance Test and Calibration B Voltage Programming and Measurement Accuracy TestCV Mode Regulation Test Resistance Range 2 Programming Accuracy CR Mode TestsResistance Range 1 Programming Accuracy Resistance Range 4 Programming Accuracy Resistance Range 3 Programming AccuracyFrequency and Duty Cycle Accuracy Transient Generator Mode TestsOutput 705TRAN on Output 705TRIGIMM Performance Test and Calibration Pulse Width AccuracyAgilent N3302A Verification Test Record Agilent N3303A Verification Test Record Agilent N3304A Verification Test Record Agilent N3305A Verification Test Record Agilent N3306A Verification Test Record Calibration Figure B-3. Voltage Calibration Parameters Calibrated Table B-2 Variables and Power Source SettingsCalibration IMON, Iprog and Current Calibration Program Performance Test and Calibration Wait Performance Test and Calibration Print TABXY9,15CALIBRATING High Voltage Range Voltage Calibration ProgramPerformance Test and Calibration Resistance Calibration Program Calibrating Range Performance Test and Calibration B 100 101 Index102 Index103 Canada Australia/New Zealand United States Latin AmericaEurope Asia Pacific JapanManual Updates
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