Agilent Technologies 66001A Case Of Trouble, Mainframe Failure, Module Line Fuse, Error Messages

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In Case Of Trouble

Mainframe Failure

You can assume there is a problem with the mainframe if there is more than one module in the mainframe and none of the module fans are on. The trouble also is probably in the mainframe if the module fans are on and the their displays are enabled (see "Configuration Switch" in "Chapter 2 - Installation") but their VOLTS and AMPS displays do not light. If a module does not appear to be operating but its VOLTS and AMPS display light, move the module to another address slot. If the above condition still occurs, then the problem probably is in the module.

Module Line Fuse

If a power module’s fan is on but its front panel does not light, the module line fuse may be blown. Proceed as follows:

1.Remove the power module from the mainframe.

Note

You can remove and insert the power module without turning off the mainframe power provided the

 

module output is either disabled or is programmed to zero and there is no GPIB bus, trigger bus, or

 

RI/DFI activity. If you are in doubt, turn off the mainframe power.

 

 

2.Check the line fuse (see Figure 2-1). If it is defective, replace it with one of the same type and rating (for the Agilent part number, see Table 1-3).

Do not use a slow-blow fuse as a replacement.

3. Replace the power module in the mainframe.

Module Output Connector

If the module panel indicates a normal voltage but there is no output at the load, the problem may be in the output connector. This is even more probable if the connector has relays. The following tests may isolate the problem:

∙If another module is working normally, use its mainframe slot for the suspected module (be careful to guard against any difference in module output voltage). If there is still no output, the problem is in the module. If the module has an output in the new slot, the problem is with its original output connector.

∙To check a suspected connector with a good module, proceed as follows (see DC Module Connectors Installation Guide for details of the connector and its jumpers):

1.Disable the power module output (Dis annunciator on).

2.Remove the output connector from mainframe.

3.Examine the connector plug for bent pins.

4.Remove the cover from the output connector.

5.If there is no relay board, go to step 6. Otherwise, proceed as follows:

a.Remove the relay board by pulling it straight up.

b.Examine relay board connector for bent pins.

c.Examine the connector board to ensure that the required jumpers have been cut to enable relay operation.

6.Examine the jumpers on the connector board. If any jumpers have been cut, they must be replaced.

Error Messages

A power module may fail either during selftest or while operating (runtime). In either case, the module display may show an error message indicating the reason for the failure.

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Contents Agilent Part No Microfiche Part No September USER’S GuideCertification Safety Summary Printing History Symbol DescriptionHerstellerbescheinigung Manufacturers DeclarationModel Numbers a 66000A Manufacturer’s Name and AddressUSA Page Table of Contents Using the Agilent 66001A MPS Keyboard Basic Power Module CommandsGeneral Information Item DescriptionOption Description Accessories Programming Accuracy @ calibration temperature ± 5 C Specifications and Supplemental CharacteristicsOutput Ratings Readback AccuracyAgilent Model 66101A 66102A 66103A 66104A 66105A 66106A Performance Specifications ParameterSupplemental Characteristics Parameter Remote Sensing Capability 66101A 66102A Agilent Model 66103A 66104A 66105A 66106ADimensions Recommended Calibration Interval Safety ComplianceWeight Downprogramming Monotonicity Gpib Interface CapabilitiesOutput Characteristic Curve Supplemental CharacteristicsReplaceable Parts List Description Agilent Part No Parameter Agilent Model Number and Parameter ValuePage Inspection InstallationSwitches Power Module Line Fuse and Switches Switch Setting RI Action Remote Inhibit RI Function SwitchesDisplay Function Switch Calibration Function SwitchesOutput Connector Installing The Module In The MainframeConnecting The Load Output Connections Selecting the Proper Wire SizeResistance Ω/ft AWG No. *AmpacityVoltage Readback Remote Voltage SensingParallel Operation Output RatingOutput Noise Voltlev Outp OFFVoltprot Currlev Voltlev Voltprot Currlev MAX Outp onCapacitive Loads Multiple Loads Battery Charging Connecting The Controller Inductive Loads OVP ConsiderationsTurn-On Checkout Power Module Front Panel DisplayIntroduction Module Panel DisplayAddr Dis Prot Power Module Turn-On StateChecking Basic Module Functions Error Messages Module Output ConnectorCase Of Trouble Mainframe FailureRuntime Error Messages Selftest Error MessagesMessages DisplaySynopsis Of Commands Basic Power Module CommandsGpib Controller MPS KeyboardPower Module Output Commands Function CommandPower Module Protection Commands Function Power Module Fixed-Mode Output CommandsPower Module Trigger Commands Function Power Module List-Mode Output CommandsControlling List-Mode Output Controlling TriggersUsing the RI/DFI Functions RI Remote Inhibit Input Changing The Power On StateDFI Discrete Fault Indicator Output Command DFI Output Commands FunctionCalibration Changing The Calibration PasswordEnabling Or Disabling The Calibration Function Performing a CalibrationEquipment Required Table A-2. Voltage Calibration ProcedureCalibrating Voltage Keyboard Entry Controller Entry † FunctionDisable the output Table A-3. Current Calibration ProcedureCalcurrlev MIN Calcurrlev MAXRecovering From a Lost Calibration Password Recovering The Factory Calibration ConstantsCalibration Error Messages Agilent Basic Calibration ProgramInitialize Power Supply Assign Power Supply Gpib AddressPassword is Optional only 10 ! Voltage Calibration ProgramPrint Current Calibration not Saved END ifElse Print Current Calibration CompleteAgilent 66001A MPS Keyboard Using The Agilent 66001A MPS KeyboardConnecting The Keyboard Meter Area Keyboard DescriptionAnnunciators Agilent 60001A MPS Keyboard System Keys  Letter Keys Displaying Status Using The DisplayChanging or Entering Values Command Example Sending Scpi CommandsQuery Example Error Example Scpi Command Tree Agilent 60001A MPS Keyboard Addr IndexProt Unr AmpsShift SRQ Tlk Lsn ProtMeas VOLT?, 32 Outp ScpiInit Agilent Sales and Support Office Agilent Sales and Support OfficesManual Updates
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