Agilent Technologies 66001A manual Changing The Power On State, Outp DFI Sour Link

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Using the RI/DFI Functions

RI (Remote Inhibit) Input

The signal applied to the mainframe digital connector INH input (see "Chapter 3 Connections" of the mainframe Installation Guide) is the RI (remote inhibit). The module function switch described in "Chapter 2 - Installation" allows you to enable or disable the RI input and, when enabled, to specify RI as either latching or nonlatching. If the module function switch is set to enable RI, then the input signal will disable the power module output. If the function switch is also set to RI nonlatching, then removing the signal from the INH input restores the power module output. If the function switch is set to RI latching, an RI status bit is latched and the power module remains disabled after the input signal is removed. The RI status bit is removed either by reading the Status Questionable Event register (STAT: QUES?) or by clearing it (*CLS). See the Programming Guide for specifics.

The detected RI bit can be used to generate a DFI signal that appears at the mainframe FLT output. This signal, in turn, can be wired to the RI inputs of other power modules to also disable their outputs (see the wiring diagram in Chapter 3 of the mainframe Installation Guide).

DFI (Discrete Fault Indicator) Output

When the DFI function is enabled (OUTP:DFI ON), you can program the Status Subsystem to cause any status condition (including RI) to generate a DFI output, which appears as a TTL low-true signal at the mainframe digital connector FLT output. See "Chapter 4 - Status Reporting" in the Programming Guide for details of programming the Status Subsystem.

Command

OUTP:DFI ON

OUTP:DFI OFF

OUTP: DFI: SOUR LINK

OUTP: DFI: LINK <parameter>

Table 4-6. DFI Output Commands

Function

Enables the DFI function. Disables the DFI function.

Specifies the source for DFI events. The only source is LINK.

Specifies what power module status events are linked to the DFI function. Table 3-1 in the Programming Guide identifies all the DFI link parameters.

Only one parameter may be specified for OUTP: DFI: LINK, such as OUTP: DFI: LINK CC. However, you can specify

entire status groups by specifying a summary bit. For example, OUTP: DFI: LINK QUES specifies the Questionable Status summary bit, which is the logical OR of OV, OC, OT, RI, and UNR. The default link parameter SUM3 is the logical OR of the QUES, OPER, and ESB summary bits. This gives DFI access to all three status register groups (see "Chapter 4 - Status Reporting" in the Programming Guide for more information).

Changing The Power On State

Switch 6 of the module function switches (see "Chapter 2 - Installation") determines the state of the power module when you turn it on. With the switch in the factory-default position (1), the module turns on in the reset (*RST) state. You will find the parameters for this state listed under the *RST command in "Chapter 3 - Language Dictionary" of the Programming Guide. If you store your own parameters in location 0 (*SAV 0), and set the switch to 0, then the module will assume that state when you turn it on.

Note

The *RST state is a safe turn-on state that should not be replaced without careful consideration.

34 Basic Power Module Commands

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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
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