Agilent Technologies 6814B, 6834B manual Setting the Output Frequency, Setting a Protection Feature

Page 43

Front Panel Operation - 4

2 - Setting the Output Frequency

When you turn on the ac source, the default output frequency is a 60 Hz. Assuming the voltage output from example 1 is in effect (120 Vrms sinewave), change the frequency to 50 Hz as follows:

 

Action

Display

You can set the frequency in the same way that you set the voltage:

 

 

1.

On the Function keypad, press Freq. On the Entry keypad, press 5 0 Enter.

FREQ

50

2.

On the Function keypad, press Freq. On the Entry keypad, press ↓ or ° to

FREQ

50

 

increment or decrement the existing value.

 

 

3.Rotate the front panel Frequency knob to obtain 50 Hz.

To verify the output, you can measure it as follows:

4.On single-phase ac sources, the φ1 annunciator is lit. On three-phase ac sources, the phase annunciator of the last selected phase will be lit. The Meter menu is presently displaying the measured voltage and frequency of the selected output phase.

You can scroll through all of the measurement functions in the Meter Menu by pressing the ￿ and keys.

FREQ 50

120 V 50 Hz

3 - Setting a Protection Feature

You can set the ac source to disable its output if it detects an overvoltage or overcurrent fault condition. Other automatic fault conditions (such as overtemperature) also will disable the output. Set the

overcurrent protection feature as follows:

 

Action

Display

1.

On the Function keypad, press Protect.

PROT:CLEAR

2.

Press ° to obtain the overcurrent command.

CURR:PROT OFF

3.

On the Entry keypad, press once to scroll to the ON parameter and press Enter. The

CURR:PROT ON

 

OCP annunciator will light, indicating that the overcurrent protection circuit is on.

 

 

CURR:PROT ON

 

 

If you wish to set a time delay between the detection of the fault and the disabling of

DELAY .1

 

the output, scroll to the delay command on the protection menu. The default delay is

 

 

100 milliseconds.

 

 

Enter the delay from the Entry keypad, such as . 2 5 0 Enter.

DELAY .250

4.

When you want to restore normal operation after the cause of the overcurrent

PROT:CLEAR

 

condition has been removed, scroll to the protection clear command and press

 

 

Enter. The OCP annunciator then will go off.

 

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Contents User’s Guide AC Power Solutions Agilent Models 6814B, 6834B, and 6843ACertification Warranty InformationGeneral Safety SummarySafety Symbols EMC DeclarationPrinting History Acoustic Noise InformationTable of Contents Entry Keys Examples of Front Panel Programming Specifications Supplemental CharacteristicsPerforming the Calibration Procedure Error Number ListTopic Document OrientationLocation Agilent Part Number Safety ConsiderationsOptions, Accessories, and User Replaceable Parts Option DescriptionCapabilities DescriptionModel Description Front Panel/Remote Operation Output CharacteristicRanges Output VA Capability AC Source Output Characteristic in real-time modePage Items Supplied CleaningInspection Damage Packaging MaterialNot block the fan exhaust at the rear of the unit LocationBench Operation Rack MountingInput Connections Installing the Power CordInput Source and Line Fuse Output Connections Output ConnectionsAmpacity and Resistance of Stranded Copper Conductors Wire ConsiderationsVoltage Drops Current RatingsRemote Sense Connections Remote Sense ConnectionsOutput Rating Trigger ConnectionsDigital Connections OVP ConsiderationsController Connections Gpib ConnectorRS-232 Data Format Interface CommandsRS-232 Connector RS-232 InterfaceNull Modem Interface Lines Response Data Terminator Hardware HandshakePreliminary Checkout IntroductionCheckout Procedure Using the KeypadVolt Procedure Display ExplanationProtclear Currprot OFF VoltprotCurrlev CurrprotCase of Trouble Error MessagesLine Fuse Page Front Panel, Overall View Front Panel DescriptionAC+DC System Keys Display Command FunctionFunction Keys Annunciator On Phase SelectedImmediate Action Keys KBESSEL, Rect Scrolling KeysMeter Display Keys Display MeasurementDisplay Output Control KeysRST CLS Protection and Status Control KeysAbort Trigger and List Control KeysInitimmed IMMThrough Are used for entering numeric values Is the decimal Entry KeysSet the output to 120 V rms as follows Setting the Output Voltage AmplitudeProcedure for Single-Phase AC Sources Examples of Front Panel ProgrammingTo verify the output, you can measure it as follows Procedure for Three-Phase AC SourcesPhase 3 to 235 Vrms Action DisplaySetting a Protection Feature Setting the Output FrequencyOvercurrent protection feature as follows Voltm Step Using Transient Voltage ModesStep Transient VolttDcycle Pulse TransientVoltm Pulse WidthAction List TransientVoltm Fixed Voltm List Count Volt EOL Step Auto Trigger Delays and Phase SynchronizationExample Display Syncsour PhaseSyncphas Initimmed Example Voltm Step Syncsour Phase Syncphas InitimmedProgramming Slew Rates Using Slew Rates to Generate WaveformsSlewt Voltm FixedSlew Step SlewmCurrpeak Syncsour Phase SyncphasMeasuring Peak Inrush Current RangeAction Display To set the Gpib address, proceed as follows Setting the Gpib Address and RS-232 ParametersTo configure the RS-232 interface, proceed as follows Saving and Recalling Operating StatesAddress Noutputs Table A-1. Performance Specifications1 SpecificationsAgilent 6814B Agilent 6834B Agilent 6843A Table A-2. Supplemental Characteristics Supplemental CharacteristicsSpecifications a Page Equipment Required CharacteristicsRecommended Model Turn-On Checkout Procedure Test SetupPerforming the Verification Tests RMS Current Readback Accuracy Voltage Programming and Measurement AccuracyAction Normal Result Agilent 6843A Current Measurement Accuracy Performing the Calibration ProcedureAgilent 6814B Current Measurement Accuracy Agilent 6834B Current Measurement AccuracyFront Panel Calibration Enable Calibration ModeFront Panel Calibration Menu Calibrating the OVP trip point Calibrating and Entering Voltage Calibration ValuesCalibrating and Entering Current Calibration Values Calpass Changing the Calibration PasswordCalibrating the Output Impedance Agilent 6843A only Saving the Calibration ConstantsAgilent Calibration Program Listing Calibration Error MessagesTable B-3. Gpib Calibration Error Messages Calibration Over the GpibFigure B-2. Calibration Program Listing Sheet 1 Figure B-2. Calibration Program Listing Sheet 2 Page Table C-1. Error Numbers Error Number ListError Messages Error Messages C Page Index Index Index Japan United States Latin AmericaCanada Australia/New Zealand Europe Asia PacificManual Updates
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