Probe check | Agilent Technologies E4374A, E4370A, E4371A manual

Programming Overview - 5

Probe check

Probe check includes three separate functions: a continuity check, a power probe resistance check, and a sense probe resistance check. All probe check functions require a cell to be connected to the channel outputs.

The continuity check is a low-current stimulus test that should be performed prior to the power probe test, or the sense probe test. Its primary function is to identify misaligned or bad probes. If the probes pass this initial test, you can safely begin a test sequence and apply power to the cells. To perform the probe continuity test use:

cfMeasProbeContinuity();

Probe resistance checks are internal procedures that use the plus and minus output terminals in conjunction with the remote sense capability of the product to check that the resistance of both the power and sense probes are within the allowable limits. When enabled, these checks occur continuously while a sequence is running.

For the power probe resistance check, a user defined resistance limit must be specified. The power probe resistance includes the probe, fixture wiring, and connection resistance. If the defined resistance limit is ever exceeded on an individual channel, that channel fails and is removed from the forming sequence. To specify the resistance limit and enable power probe checking, use:

cfSetOutputProbeTest();

For the sense probe resistance check, an internal measurement is made and compared against the maximum allowable resistance that can be tolerated within the readback accuracy of the remote voltage sense circuits. The maximum allowable resistance includes the probe, fixture wiring, connection resistance, and an internal scanner resistance, which is typically 1000 ohms. If the maximum allowable resistance is ever exceeded on an individual channel, that channel fails and is removed from the forming sequence. To enable sense probe checking, use:

cfSetSenseProbeTest();

To measure the actual power probe resistance and sense probe resistance, use the following commands:

cfMeasOutputProbeResistance();

cfMeasSenseProbeResistance();

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Agilent Technologies E4374A, E4370A, E4371A manual Probe check

Contents

Multi-Cell Charger/Discharger USER’S Guide Certification Warranty Information General Safety Summary Document Scope Safety Symbols Table of Contents Configuration Page Program Examples Agilent Mccd System Capabilities General Information Hardware Description Additional FeaturesBasic Functions Agilent E4370A/E4374A Mccd Line System Agilent E4370A/E4374A Mccd Rear Panel Connections Agilent E4371A Powerbus Load Agilent E4371A Powerbus Load Front Panel External Power Source Maximum System Block Diagram Multiple Agilent Mccd Configuration Current Measurements Measurement CapabilityVoltage Measurements Cell Resistance Capacity Measurements Probe Resistance Data Logging Internal Protection Functions Protection Features External Digital I/O Protection Functions If AC Power FailsRemote Programming Interface Application Programming Interface API Web Accessible Agilent Mccd User InterfaceExample of a Cell Forming Process General Information Page Parts and Accessories InstallationAccessories Inspection Manufacturer’s Addresses Manufacturer’s Part Description Number Agilent E4370A Mccd Mainframe LocationChannel Connections Connector Number Voltage Drops and Wire ResistanceChannel Configuration Card Number Resistance of Stranded Copper Conductors Remote Sense Connections Power Bus Wiring Information Power Bus ConnectionsDiscrete terminated wires Bus bars Ampacity and Resistance of Stranded Copper Conductors Typical Power Bus Configurations Discharging Mode Guidelines Charging Mode Guidelines General Purpose I/O Digital Connections Special Functions Wiring Guidelines Equivalent Digital I/O Circuits RS-232 Connections ConfigurationInitial Calibration Auxiliary Output Connection RS-232 a and B Connectors Visual C++ Configuration Installing the API Library and Measurement Log Utility Configure the HyperTerminal program ConfigurationConfiguring the LAN Connect the Agilent E4370A Mccd to the COM port on the PC Fill Out the Agilent Mccd Configuration Screens Network Configuration Identification Configuration Miscellaneous Configuration Configuring the Digital I/O Digital I/O Configuration Pin Function General Purpose I/O Pin Digital I/O Configuration Change to External Fault Input Mixed Configuration Example Accessing Calibration Agilent Mccd User Interface Browser SettingsDescription PC Requirements Localization Using the InterfaceAccess Using the Agilent Mccd Measurement Log Utility Through Cell Forming Overview Programming Overview Cell Forming Example Test Outcome Flowchart Step Simple Cell Forming Example Cell Grouping Function Call Overview Step/Test Functions Grouping Functions Instrument Run State Sequence Control Output Configuration Instrument Protect States Instrument Protection Instrument State Storage Power Fail Operation Status Power-on and cfReset instrument settings are Measurement Log Output Measurements Time Stamp Function General Server functions Direct output control Calibration Selftest Digital port Serial port Probe check Page API Usage Guidelines Language Dictionary API Function Summary Password Protection CfMeasDCResistance CfAbort API Function DefinitionsCfCal CfCalStandard CfDeleteGroup CfCalTransferCfClose CfGetCurrent CfGetCellStatusCfGetCellStatusString CfGetGroups CfGetDigitalConfigCfGetDigitalPort CfGetInstStatus CfGetInstIdentify CfGetOutputProbeTest CfGetMeasLogIntervalCfGetOutputConfig CfGetSense CfGetOutputStateCfGetRunState CfGetSeqTest CfGetSenseProbeTestCfGetSeqStep CfGetSeqTestAnd CfGetSerialConfigCfGetSeqTime CfGetSerialStatus CfGetShutdownMode CfGetShutdownDelayCfGetStepNumber CfGetTrigSource CfInitiate CfGetVoltageCfMeasACResistance CfMeasCapacityAS CfMeasCurrent CfMeasCapacityWSCfMeasDCResistance CfMeasOutputProbeResistance CfMeasSenseProbeResistance CfMeasProbeContinuity CfOpenGroup CfMeasVoltageCfOpen CfReadMeasLog CfProtectCfProtectClear Step number Status CfReadSerial CfReadTestLog CfResetCfResetSeq CfSelftest CfSaveOutputConfigCfRestart CfSetCurrent CfSetAutoConnect Cfgrounded Operation CfSetDigitalConfig Cfisolated Operation CfSetDigitalPort CfSetErrorFunction CfSetGroup CfSetMeasLogIntervalCfSetOutputConfig CfSetOutputState CfSetOutputProbeTest CfSetSeqStep CfSetSenseCfSetSenseProbeTest CfReset, cfSetSeqTest, cfGetSeqStep Meastesttype is one CfSetSeqTest Timetesttype is one CfSetSeqTestAnd CfSetSerialConfigCfSetServerTimeout CfSetTimeout CfSetShutdownDelayCfSetShutdownMode CfSetTrigSource CfShutdown CfSetVoltageCfStateDelete 101 CfStateRecall CfStateListCfStateSave CfTrigger 103 CfWriteSerialPage 105 Program ExamplesExample 106 Program Examples Digtestlight 107 108 Cffail 109 110 111 Threadinfo 112 113 114 Hardware Specifications SpecificationsTable A-1. Agilent E4370A/E4374A Mccd Specifications 115 116 Table A-2. Agilent E4370A/E4374A Mccd Characteristics 117 Table A-3. Agilent E4371A Powerbus Load CharacteristicsTable A-4. Requirements for External Power Bus Source Page Calibration Types CalibrationFull Calibration Calibration Interval Mainframe Reference Calibration Transfer CalibrationCalibration Connections Table B-1. Calibration Equipment Required Figure B-1. Calibration Connections 121 122 Agilent Mccd Configuration Screens Rear panel transfer calibration switch Calibration Error MessagesAPI Calls over the LAN Web-based Graphical User InterfacePage 125 Dimension Drawings 126 Dimension Drawings 127 Sense and Power Connector PinoutsCard Number Sense and Power Connector Pinouts Sense and Power Connector Pinouts D 130 Table D-1. Card 1 Sense and Power Pinout Assignments 131 Table D-2. Card 2 Sense and Power Pinout Assignments 132 Table D-3. Card 3 Sense and Power Pinout Assignments 133 Table D-4. Card 4 Sense and Power Pinout AssignmentsPage Case of Trouble Table E-1. Fault IndicatorsIntroduction 135 136 Selftest Error Messages 137 Index 138 Index 139 140 141 Agilent Sales and Support Office