Xantrex Technology GPIB-XPD manual Troubleshooting, LEDs

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Operation

Troubleshooting

Troubleshooting

WARNING

Exercise caution when using and servicing power supplies. High energy levels can be stored at the output voltage terminals on all power supplies in normal operation. In addition, potentially lethal voltages exist in the power circuit and the output connector of power supplies which are rated at 40V and over. Filter capacitors store potentially dangerous energy for some time after power is removed.

Diagnostic This section describes the diagnostic LEDs found on the GPIB interface.

LEDs

Computer Operating Properly (COP) LEDs The GPIB interface provides three diagnostic LEDs, located at D5, D4, and D1 on its PCB. Refer to Figure 2.3, ‘GPIB Interface PCB” on page 18, for their locations. At present, these LEDs turn on to signal COP events for the interface's microprocessors. Issue a RST (reset) command to turn off the diagnostic LEDs.

The green COP LED at circuit designation D5 indicates that the GPIB interface microprocessor successfully recovered from an illegal operating code. The event is transparent to the GPIB communications bus and the GPIB interface continues to function normally.

The red COP LED at D4 indicates that a transparent restart caused by noise in the master processor circuitry has occurred.

The red COP LED at D1 indicates that a transparent restart caused by noise in the slave processor circuitry has occurred.

48	Operating Manual for GPIB for XPD Series Power Supply

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Contents GPIB-XPD Page Internal Gpib Interface for XPD 500 Watt Series How do you get service? Phone 604 422 Toll Free North America 800 667 Fax 604 421What does this warranty not cover? Disclaimer Product Information About Your Power Supply Model Number Serial Number Purchased From Purchase DateSafety SupplyManual Revisions Installation and ConfigurationMain Sections About This Manual Contents Contents Features and Specifications DescriptionFunctions Features and FunctionsFeatures and Specifications ReadbackOVP SpecificationsModels 18-30 33-16 60-9 120-4.5 Features and Specifications Introduction Initial InspectionPower Supply Front Panel with Gpib Interface Installed Gpib Interface Subplate Located on Power Supply Rear Panel Gpib Interface PCB PON SRQ Basic Setup ProcedureStep # Description Action Reference IEEE-488 Primary Address Selection AddressSwitch Position Power on results Power On Service Request PON SRQRear Panel SRQ Switch Position PON SRQ State Condition Default Settings Model Example IsetIEEE-488 Controller Connection Internal PCB Jumper SelectionsOVP Control Mode Selection High LOW OFF User SignalsHigh OFF LOW User Signals J21 Connector J21 User Signal Connector Circuit Block Diagram J21 User Cable with Ferrite Block Operation Gpib OperationExample Command directed to entire bus, or Power On PON Set when unit Bit Decimal Description Reset By Position WeightRequest Service SRQ Set when LSBFormat Command SyntaxComputer Entry Description Form Floating Number Definition ExampleIset 2.0A Vset Command Summary CMODE? AUXA?AUXB? DLY?Idata FAULT?Cmode IHIAuxa 1 on Command ReferenceCommand Description Auxb 1 onChanging an output setting Response Fold mode where mode is Snsp Mask None = Unmask ALLStatus, and Fault Registers on Accumulated Status, Status, and Fault Registers on SNSP, ALL, NoneResponse Vmax voltage Accumulated Status, Status, and Fault Registers Condition Mnemonic Bit Position Bit WeightError Codes 11 Error CodesTroubleshooting LEDsCalibration Voltage Program Calibration Procedure Readback Voltage Mode CalibrationSetup VoltageCalibration Current Program Calibration Procedure Current Mode CalibrationCurrent Calibration Setup Current Readback Calibration Procedure Over Voltage Protection OVP Calibration Page Xantrex Technology Inc