Agilent Technologies 66001A manual Remote Voltage Sensing, Voltage Readback

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Remote Voltage Sensing

Figure 2-4B shows the wiring for remote sensing. There is a switch on the output connector that selects either local or remote sensing of the output voltage. To configure the output for remote sensing, do the following:

Connect sense leads to the load

Make certain that the connector switch is set to REMOTE

Note

If you leave the connector switch in LOCAL, the power module will regulate the programmed voltage at

 

the connector, not at the load.

Because they do not carry load current, you may use smaller gauge wire for the remote sense leads.

Be careful to avoid open circuits in the sense leads, such as leaving the output connector sense switch in the Local position. If this happens, the power module will regulate at its output terminals instead of at the load.

Note

If the sense terminals are left open, the voltage at the output terminals will increase approximately 3 to 5%

 

over the programmed value. The readback voltage will not indicate this increase because readback is

 

measured at the sense terminals.

 

 

 

Figure 2-4. Load Connection

The dashed lines in the connection drawings illustrate remote sense connections. In this case, the remote sense terminals of the power module are connected to the load rather than the output terminals. This allows the power module to automatically compensate for the voltage drop in the load leads as well as to accurately read back the voltage at the load. In remote-sense applications, the voltage readback from across the load is not the output voltage of the power module. The actual output voltage is the sum of the load voltage and the voltage drop in the load lead. Keep this output voltage within the power module’s maximum voltage rating. Failure to do this may result in an unregulated condition, especially when the line voltage is low.

Voltage Readback

In remote sense applications, the voltage readback occurs directly at the load. This allows the power module to automatically compensate for the voltage drop in the load leads and to provide an accurate voltage readback directly across the load.

22 Installation

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Contents USER’S Guide Agilent Part No Microfiche Part No SeptemberCertification Safety Summary Herstellerbescheinigung Symbol DescriptionPrinting History Manufacturers DeclarationUSA Manufacturer’s Name and AddressModel Numbers a 66000A Page Table of Contents Basic Power Module Commands Using the Agilent 66001A MPS KeyboardOption Description Item DescriptionGeneral Information Accessories Output Ratings Specifications and Supplemental CharacteristicsProgramming Accuracy @ calibration temperature ± 5 C Readback AccuracySupplemental Characteristics Parameter Performance Specifications ParameterAgilent Model 66101A 66102A 66103A 66104A 66105A 66106A 66101A 66102A Agilent Model 66103A 66104A 66105A 66106A Remote Sensing CapabilityWeight Recommended Calibration Interval Safety ComplianceDimensions Downprogramming Monotonicity Gpib Interface CapabilitiesReplaceable Parts List Description Agilent Part No Supplemental CharacteristicsOutput Characteristic Curve Parameter Agilent Model Number and Parameter ValuePage Switches InstallationInspection Power Module Line Fuse and Switches Display Function Switch Remote Inhibit RI Function SwitchesSwitch Setting RI Action Calibration Function SwitchesConnecting The Load Installing The Module In The MainframeOutput Connector Resistance Ω/ft Selecting the Proper Wire SizeOutput Connections AWG No. *AmpacityRemote Voltage Sensing Voltage ReadbackOutput Noise Output RatingParallel Operation Voltprot Currlev Voltlev Outp OFFVoltlev Voltprot Currlev MAX Outp onMultiple Loads Capacitive LoadsInductive Loads Connecting The ControllerBattery Charging OVP ConsiderationsIntroduction Power Module Front Panel DisplayTurn-On Checkout Module Panel DisplayChecking Basic Module Functions Power Module Turn-On StateAddr Dis Prot Case Of Trouble Module Output ConnectorError Messages Mainframe FailureMessages Selftest Error MessagesRuntime Error Messages DisplayGpib Controller Basic Power Module CommandsSynopsis Of Commands MPS KeyboardPower Module Protection Commands Function CommandPower Module Output Commands Function Power Module Fixed-Mode Output CommandsControlling List-Mode Output Power Module List-Mode Output CommandsPower Module Trigger Commands Function Controlling TriggersDFI Discrete Fault Indicator Output Command Changing The Power On StateUsing the RI/DFI Functions RI Remote Inhibit Input DFI Output Commands FunctionEnabling Or Disabling The Calibration Function Changing The Calibration PasswordCalibration Performing a CalibrationCalibrating Voltage Table A-2. Voltage Calibration ProcedureEquipment Required Keyboard Entry Controller Entry † FunctionCalcurrlev MIN Table A-3. Current Calibration ProcedureDisable the output Calcurrlev MAXCalibration Error Messages Recovering The Factory Calibration ConstantsRecovering From a Lost Calibration Password Agilent Basic Calibration ProgramPassword is Optional only Assign Power Supply Gpib AddressInitialize Power Supply 10 ! Voltage Calibration ProgramElse END ifPrint Current Calibration not Saved Print Current Calibration CompleteConnecting The Keyboard Using The Agilent 66001A MPS KeyboardAgilent 66001A MPS Keyboard Annunciators Keyboard DescriptionMeter Area Agilent 60001A MPS Keyboard System Keys  Letter Keys Changing or Entering Values Using The DisplayDisplaying Status Sending Scpi Commands Command ExampleQuery Example Error Example Scpi Command Tree Agilent 60001A MPS Keyboard Prot Unr IndexAddr AmpsLsn Prot Shift SRQ TlkInit ScpiMeas VOLT?, 32 Outp Agilent Sales and Support Offices Agilent Sales and Support OfficeManual Updates