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ILX Lightwave LDX-3500 Series User Manual

Precision current sources
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ILX Lightwave LDX-3500 Series User Manual

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Summary of Contents for ILX Lightwave LDX-3500 Series

  • Page 1 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
  • Page 2 User’s Guide Precision Current Sources LDX-3500 Series ILX Lightwave Corporation P. O. Box 6310 Bozeman, MT, U.S.A. 59771 · · · U.S. & Canada 1-800-459-9459 · International Inquiries: 406-586-1244 Fax 406-586-9405 · E-mail: support@ilxlightwave.com www.ilxlightwave.com 70016907_R00_03/03 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 3 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 4: Table Of Contents

    Power-Up Sequence ......... . . 12 Introduction to the LDX-3500 Series Front Panel ......13 Adjustments .
  • Page 5 Monitor Current (Power Mode) Calibration ......27 Appendix A Troubleshooting LDX-3500 Series Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 6 Figure 2.1 LDX-3525 Front Panel ....... . 13 Figure 2.2 LDX-3500 Series Back Panel ......16 Figure 2.3 Back Panel LD Controller .
  • Page 7 L I S T O F F I G U R E S LDX-3500 Series Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 8 Table 3.1 Recommended Test Equipment ......24 3_03 LDX-3500 Series Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 9 L I S T O F TA B L E S LDX-3500 Series Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 10: Safety Information And The Manual

    • Prolonged storage under adverse conditions • Failure to perform intended measurements or functions If necessary, return the instrument to ILX Lightwave, or authorized local ILX Lightwave distributor, for service or repair to ensure that safety features are maintained (see the contact information on page x).

  • Page 11: Safety Marking Symbols

    Off: Out position of a bistable push control. The slash (I) only denotes that mains are on. The circle (O) only denotes that mains are off. viii LDX-3500 Series Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 12 Returning an Instrument If an instrument is to be shipped to ILX Lightwave for repair or service, be sure to: Obtain a Return Authorization number (RA) from ILX Customer Service.

  • Page 13: Comments, Suggestions, And Problems

    You must negotiate and settle with the carrier for the amount of damage. Comments, Suggestions, and Problems To ensure that you get the most out of your ILX Lightwave product, we ask that you direct any product operation or service related questions or comments to ILX Lightwave Customer Support.
  • Page 14 W A R R A N T Y If ILX Lightwave determines that a return to the factory is necessary, you are issued a Return Authorization (RA) number. Please mark this number on the outside of the shipping box. You or your shipping service are responsible for any shipping damage when returning the instrument to ILX Lightwave;...
  • Page 15 W A R R A N T Y LDX-3500 Series Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 16: Product Overview

    Series Precision Current Sources. If you want to get started right away, read Chapter 2, which covers Operation, first. Product Overview The LDX-3500 Series Precision Current Sources provide a high stability output with a fully redundant current limit and multiple laser protection features. Available Options and Accessories...

  • Page 17: Specifications: Ldx-3525

    0 - 5 V reverse bias (+ 10%) Power Modulation Bandwidth 1 kHz 6. Specified values are a percent of nominal. Constant-power mode stability specification assumes zero drift in detector responsivity. LDX-3500 Series Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 18 7. Fifty percent modulation at half-scale output. Analog Output Output Voltage 0 - 10 V 0 - 10 V Transfer Function 20 mA/V 50 mA/V Transfer Function Accuracy 3_03 LDX-3500 Series Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 19 Humidity < 85% relative humidity, non-condensing Laser Safety Feature Key switch, interlock and output delay (meets CDRH US21 CFR 1040.10) Display type 4-digit, green LED LDX-3500 Series Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 20: Specifications: Ldx-3545

    0 - 5 V reverse bias (+ 10%); adjustable on back panel Power Modulation Bandwidth 1 kHz 6. Specified values are a percent of nominal. Constant-power mode stability specification assumes zero drift in detector responsivity. 3_03 LDX-3500 Series Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 21 7. Fifty percent modulation at half-scale output. Analog Output Output Voltage 0 - 10 V 0 - 10 V Transfer Function 100 mA/V 300 mA/V Transfer Function Accuracy LDX-3500 Series Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 22 < 85% relative humidity, non-condensing Laser Safety Feature Key switch, interlock and output delay (meets CDRH US21 CFR 1040.10) Display type 4-digit, green LED 3_03 LDX-3500 Series Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 23: Specifications: Ldx-3565

    0 - 5 V reverse bias (+ 10%); adjustable on back panel Power Modulation Bandwidth 1 kHz 6. Specified values are a percent of nominal. Constant-power mode stability specification assumes zero drift in detector responsivity. LDX-3500 Series Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 24 7. Fifty percent modulation at half-scale output. Analog Output Output Voltage 0 - 10 V 0 - 10 V Transfer Function 200 mA/V 600 mA/V Transfer Function Accuracy 3_03 LDX-3500 Series Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 25 We invite you to contact us at any time with your suggestions. LDX-3500 Series Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 26: Installation

    Precision Current Sources. It is divided into sections covering installation, familiarization and adjustment, and normal operating procedures. Later in this chapter, there is an overview of the LDX-3500 Series' front panel features, and it presents a guide to quickly familiarize the user with the front panel operations.

  • Page 27: Rack Mounting

    Refer to Section 1.3 for applicable rack mount accessory part numbers. Power-Up Sequence With the LDX-3500 Series Precision Current Source connected to an AC power source, pressing the POWER switch will supply power to the instrument and start the power-up sequence.

  • Page 28: Introduction To The Ldx-3500 Series Front Panel

    Each of the labeled areas on the front panel (e.g. DISPLAY, MODE) is described in this chapter. Refer to Figure 2.1 for the following discussions of the LDX-3500 Series Precision Current Sources front panel sections. The key words are in capital letters for quick identification.

  • Page 29: Parameters

    I N S T A L L A T I O N A N D O P E R A T I O N C H A P T E R Introduction to the LDX-3500 Series Front Panel power, and the display switch will toggle between laser power measurement, laser power set point, and output current measurement.

  • Page 30: Control Mode And Current Range

    I N S T A L L A T I O N A N D O P E R A T I O N C H A P T E R Introduction to the LDX-3500 Series Front Panel Conditions Which Will Automatically Shut Off the OUTPUT •...

  • Page 31: Back Panel Controls And Connections

    I N S T A L L A T I O N A N D O P E R A T I O N C H A P T E R Introduction to the LDX-3500 Series Front Panel compliance limit. If this occurs, the impedance of the output load is too high and may cause the output to shut off if the output current is increased.

  • Page 32: The Laser Connectors

    Laser Anode Figure 2.3 Back Panel LD Controller The Interlock pins must be shorted in order to turn the LDX-3500 Series Precision Current Source output on. The Photodiode BNC connector may also be used instead of pins 6 and 7 of the D-sub connector.

  • Page 33: Laser Diode Connections And Shielding

    Introduction to the LDX-3500 Series Front Panel Laser Diode Connections and Shielding Before connecting the laser diode to the LDX-3500 Series Precision Current Source, be sure that the front panel (OUTPUT) ON switch is in the OFF position (ON LED unlit).

  • Page 34: Figure 2.6 Common Laser Anode - Photodiode Cathode

    Experience indicates that should an open circuit occur during laser operation (while the LASER is on, the lasr may be damaged by a momentary circuit break-and-remake before the final circuit break. Therefore, although the LDX-3500 Series Precision Current Source provides a proprietary debounce protection circuit for LASER output, secure cabling is important.

  • Page 35: Photodiode Feedback Connections

    6 and 7 (see Figure 2.3). The LDX-3500 Series Precision Current Source provides an adjustable reverse bias of 0 - 5 V for the photodiode. To set the photodiode bias to 5 volts reverse bias, turn the back panel PHOTODIODE BIAS ADJUST fully clockwise.

  • Page 36: General Operating Procedures

    (refer to the back panel for the correct ratings). • Turn on the LDX-3500 Series Precision Current Source. The OUTPUT stage will be off at power-up and the unit will automatically configure its parameters to the state which existed when the power was last shut off.

  • Page 37: Power Mode Operation

    AC power source supplying the correct voltage and frequency for your unit (refer to the back panel for the correct ratings). • Turn on the LDX-3500 Series Precision Current Source. The OUTPUT stage will be off at power-up and the unit will automatically configure its parameters to the state which existed when the power was last shut off.

  • Page 38: Chapter 3 Maintenance

    There are no user serviceable parts including the fuses in the power entry module. Potentially lethal voltages exist within the LDX-3500 Series Precision Current Source. To avoid electric shock, do not perform any of the procedures described in this chapter unless you are qualified to do so.

  • Page 39: Calibration Overview

    C H A P T E R Calibration Overview Calibration Overview The LDX-3500 Series Precision Current Source should be calibrated every 12 months or whenever performance verification indicates that calibration is necessary. All calibrations can be done with the case closed. The instrument is calibrated by changing the internally stored digital calibration constants.

  • Page 40: Warm-Up

    M A I N T E N A N C E C H A P T E R Calibration Adjustments Warm-Up The LDT-5525 should be allowed to warm up for at least 1 hour before calibration. Calibration Adjustments There are two calibration adjustments that need to be made for the LDX-3500 Series Precision Current Source.
  • Page 41 During this calibration the output will be driven to about 80% and then 20% of full scale. No user input is required for the limit calibration. After the limit is calibrated, the LDX-3500 Series Precision Current Source will store all the calibration constants into non-volatile memory and then return to its former (before calibration) state.

  • Page 42: Monitor Current (Power Mode) Calibration

    (A 4-point probe resistance measurement is recommended.) • Set the LDX-3500 Series Laser Diode Current Source’s mode to P. Set the current range to the lower output range. Set the current limit (I LIMIT) to 80% of full scale. Set the P LIMIT to 100% of full scale (Power limit may be ignored during calibration).
  • Page 43 (or the calculated monitor current value from Step a). • Release the ADJUST ENBL switch to store the first calibration value. The LDX-3500 Series Precision Current Source will then set the second calibration current (power), approximately one-fourth of the original current.

  • Page 44: Appendix A Troubleshooting

    A P P E N D I X ROUBLESHOOTING This appendix is a guide to troubleshooting the LDX-3500 Series Precision Current Source. Some of the more common symptoms are listed here, and the appropriate troubleshooting actions are given. We recommend that the user start at the beginning of this guide.
  • Page 45 Calibration modes will be aborted if an open circuit is detected unintentionally OPEN/V LIM indicator blinks This indicates a voltage limit error; check laser connections; a higher impedance may cause this condition LDX-3500 Series Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 46 Application of Council Directive(s) 89/336/EEC EMC Directive 73/23/EEC Low Voltage Directive 73/23/EEC Low Voltage Directive Manufacturer’s Name ILX Lightwave Corporation Manufacturer’s Name ILX Lightwave Corporation Manufacturer’s Address P.O. Box 6310 31950 E. Frontage Road Manufacturer’s Address P.O. Box 6310 31950 E. Frontage Road...
  • Page 47 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...

This manual is also suitable for:

Ldx-3525Ldx-3545Ldx-3565

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