Lightwave Communications LDT-5525 manual Specifications, Output1

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INTR ODUCTI ON AND SP ECIF ICATIONS

Specifications

C H A P T E R 1

Specifications

Output1

Output Type

Bipolar constant current source

 

 

Control Algorithm

Smart Integrator, Hybrid PI

 

 

Compliance Voltage

6 Volts at 4 Amps

 

 

Maximum Current Output

4 Amps

 

 

Maximum Output Power2

24 Watts, typical

Current Limit Control Range

0 to 4.4 Amps

 

 

Current Limit Accuracy

+50 mA

 

 

Ripple / Noise3

<1 mA

Temperature Control

 

 

 

Temperature Range4

-99 to 199.9oC

 

-20 to +70oC with typical (NTC) 10K thermistor

Sensor Type

2-wire thermistor, LM335 voltage type or AD590

 

currenty type

Thermistor Sensing Current

10 µA or 100 µA

 

 

Temperature Set Point Resolution

0.1oC

Short Therm Stability5

+0.005oC

Long Term Stability

+0.01oC

1Output current and power are rated into a 1 ohm load

2Higher output powers can be accommodated by using an external booster. Contact ILX Lightwave for further information

3Broadband noise (10 Hz to 10 MHz) is measured at 1 Amp output current

4Temperature control range depends primarily on the type of thermistor and TE module used. The range can be extended higher or lower by selecting appropriate components; see Appendix B for more details

5Short term temperature stability is a strong function of the thermal environment of the thermistor and TE module; room air currents in particular can easily cause fluctuations of 0.1oC in an exposed mounting configuration

06_07

LDT-5525

3

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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 General Safety Considerations Safety Information and the ManualSafety Marking Symbols Safety SymbolsWarranty Claims for Shipping Damage When you contact us, please have the following information Comments, Suggestions, and ProblemsXii LDT-5525 Product Overview Introduction and SpecificationsDescription Model Number Available Options and AccessoriesOutput1 SpecificationsUser Calibration General Specifications LDT-5525 Rack Mounting AC Power ConsiderationsOperation Introduction to the LDT-5525 Front Panel Power-Up SequenceAdjustments Sensor CAL Output Back Panel Controls and Connections Sensor Select SwitchBack Panel TEC Connector TEC ConnectorTEC Grounding Considerations Warm-Up and Environmental Considerations General Operating ProceduresTemperature Mode Operation External Safety Switch Operation Resistance Mode OperationBooster Operation General Operating Procedures LDT-5525 Calibration Overview Maintenance and TroubleshootingWarm Up Recommended EquipmentEnvironmental Conditions Thermistor Calibration Calibration AdjustmentsAD590 Sensor Calibration LM335 Sensor Calibration ITE Current Calibration Symptom Causes and Corrective Actions TroubleshootingTemperature, based on C1 and C2 Table A.1 Comparison of Curve Fitting Equations STEINHART-HART EquationThermistor R/T Curves Computer Program REM Print Using H$ I, TI, RI LDT-5525 Thermistor Range Sensing Current Thermistor SelectionTable B.2 10K Thermistor Temperature Range Selecting the Sensing Current Temperature ResolutionSelecting and Using Thermistors Thermistor Range AD590 Sensor AD590 and LM335 Sensor CalibrationFigure C.1 AD590 Nonlinearity LM335 Sensor0607 Two Point Calibration Method One Point Calibration MethodC1n = U + V * C1 and C2n = V * C2 LDT-5525