Agilent Technologies n3301a, n3305a, n3304a Constant Voltage CV Mode, Triggered Resistance Level

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2 - General Information

Figure 2-2. Constant Resistance Mode

Immediate Resistance Level

The resistance level can be set at the front panel or via the GPIB (RES command). If the CR mode is active, the new setting immediately changes the input at a rate determined by the voltage or current slew setting (see description below). If the module is not in the CR mode, the new setting is saved for use when the mode is changed to CR.

Triggered Resistance Level

A resistance level can be preset (stored in the electronic load) allowing the input to be updated when a trigger is received instead of immediately as described above.

If the CR mode is active, the preset resistance level will become the actual value and the input will be updated when a trigger occurs. If the CR mode is not the active mode, the preset resistance level will become the actual value when a trigger occurs but there will be no effect on the input until the CR mode becomes active. Once a level is triggered, subsequent triggers will have no effect on the input unless another RES:TRIG command is sent.

Transient Resistance Level

The transient resistance level can be set at the front panel or via the GPIB (RES:TLEV command). The transient level and the main level are used in transient operation, which is described later in this chapter.

Slew Rate

The resistance slew rate determines the rate at which the input resistance to a module changes to a new programmed value. Resistance slew rates are programmed in ohms per second. Slew rates can be set at the front panel or via the GPIB (RES:SLEW command). The programmed slew rate remains in effect for the immediate, triggered, and transient level changes previously described.

Constant Voltage (CV) Mode

In this mode, the module will attempt to sink enough current to control the source voltage to the programmed value (see Figure 2-3). The module acts as a shunt voltage regulator when operating in the CV mode. The CV mode can be set at the front panel or via the GPIB (MODE:VOLT command). The CV mode parameters are described in the following paragraphs.

Ranges

Voltage may be programmed in either of two overlapping ranges, a low range and a high range. The low range provides better resolution at low voltage settings. The range can be set at the front panel or via the GPIB

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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 Software Current Limit Constant Resistance CR ModeGeneral Information Triggered Current Level Transient Current LevelTransient Resistance Level Constant Voltage CV ModeTriggered Resistance Level Transient Voltage Level Triggered Voltage LevelToggled Transient Operation Transient OperationContinuous Transient Operation Pulsed Transient OperationTriggering a transient pulse Triggering a preset levelList Operation Triggered OperationRisetime Transition Limitation Slew Rate and Minimum Transition TimeTransition Time Slew Rate Examples Short On/Off Protection FeaturesResetting Latched Protection Input ControlOvercurrent OverpowerOvertemperature General Information OvervoltageStatus Reporting Reading Remote Programming ErrorsReverse Voltage Monitor Outputs Saving and Recalling SettingsExternal Control Signals Remote SensingPort On/Off FaultInput Measurements Minimum and Maximum Measurements Power MeasurementsDC Measurements RMS MeasurementsItems Supplied CleaningInspection Damage Packaging MaterialInstallation 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 +S and -S Control ConnectorA1-A3 A11 and A10Trigger and Digital Connections Sense SwitchRS-232 Interface Computer ConnectionsGpib Interface Parallel Connections Application ConnectionsLocal Sense Connections Remote Sense Connections11. Remote Sensing 13. Zero Volt Loading Low Voltage OperationCheckout Programming Values Checkout ProcedureIntroduction Case of Trouble Error MessagesSelftest Errors Selftest Error CodesFront 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 KeysProgramming Constant Current, Voltage and Resistance Modes Using the Front Panel DisplaySet the constant current mode input Examples of Front Panel ProgrammingSet 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 Use the Meter menu for making front panel measurements Querying and Clearing Output Protection and ErrorsQuery and Clear Errors as follows Making Basic Front Panel MeasurementsSave an instrument state in location 0 as follows Setting the Gpib AddressStoring and Recalling Instrument States Set the Gpib address as followsSpecifications Specifications Table A-2. Supplemental Characteristics Specifications aN3302A N3303A N3304A N3305A N3306A SpecificationsEquipment Required Performance Test and Calibration ProceduresPerformance Test and Calibration CC Mode TestsPerformance Tests Imon Zero VerificationVoltage Programming and Measurement Accuracy Test CV Mode TestsCC Mode Regulation Test Performance Test and Calibration BCV 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 Japan United States Latin AmericaCanada Australia/New Zealand Europe Asia PacificManual Updates