Lightwave Communications LDT-5525 manual TEC Grounding Considerations

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C H A P T E R 2

O P E R A T I O N

Back Panel Controls and Connections

TEC Grounding Considerations

The TEC outputs of the LDT-5525 are isolated from chassis ground, allowing either output terminal to be grounded at the user's option.

Note: For the TEC connector, if any one terminal pin is grounded, then no other terminal pin should be grounded. Damage to external unit or temperature controller will occur.

14 LDT-5525

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Contents User’s Guide Page Table of Contents Appendix a Steinhart-Hart Equation Appendix C AD590 and LM335 Sensor Calibration Iv LDT-5525 List of Figures Vi LDT-5525 Safety Information and the Manual General Safety ConsiderationsSafety Symbols Safety Marking SymbolsWarranty Claims for Shipping Damage Comments, Suggestions, and Problems When you contact us, please have the following informationXii LDT-5525 Introduction and Specifications Product OverviewAvailable Options and Accessories Description Model NumberSpecifications Output1User Calibration General Specifications LDT-5525 Operation AC Power ConsiderationsRack Mounting Power-Up Sequence Introduction to the LDT-5525 Front PanelAdjustments Sensor CAL Output Sensor Select Switch Back Panel Controls and ConnectionsTEC Connector Back Panel TEC ConnectorTEC Grounding Considerations Temperature Mode Operation General Operating ProceduresWarm-Up and Environmental Considerations Resistance Mode Operation External Safety Switch OperationBooster Operation General Operating Procedures LDT-5525 Maintenance and Troubleshooting Calibration OverviewEnvironmental Conditions Recommended EquipmentWarm Up Calibration Adjustments Thermistor CalibrationAD590 Sensor Calibration LM335 Sensor Calibration ITE Current Calibration Troubleshooting Symptom Causes and Corrective ActionsTemperature, based on C1 and C2 STEINHART-HART Equation Table A.1 Comparison of Curve Fitting EquationsThermistor R/T Curves Computer Program REM Print Using H$ I, TI, RI LDT-5525 Sensing Current Thermistor Selection Thermistor RangeTable B.2 10K Thermistor Temperature Range Selecting and Using Thermistors Temperature ResolutionSelecting the Sensing Current Thermistor Range AD590 and LM335 Sensor Calibration AD590 SensorLM335 Sensor Figure C.1 AD590 Nonlinearity0607 One Point Calibration Method Two Point Calibration MethodC1n = U + V * C1 and C2n = V * C2 LDT-5525