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ILX Lightwave OMH-6727B User Manual

Ingaas power/wavehead
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User's Guide
InGaAs Power/Wavehead
OMH-6727B
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
70023404_R01_09/04

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Summary of Contents for ILX Lightwave OMH-6727B

  • Page 1 User’s Guide InGaAs Power/Wavehead OMH-6727B 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 70023404_R01_09/04...

  • Page 3: Table Of Contents

    Figure 2.5 Wavelength Setting ......10 Figure 3.1 Command Path Structure ......18 4_03 OMH-6727B...
  • Page 4 L I S T O F F I G U R E S OMH-6727B...
  • Page 5 L I S T O F TA B L E S IST OF ABLES Table 3.1 Device-Dependent Commands valid with the OMH-6722B 17 Table 3.2 Device-Dependent Commands which are not usable with the OMH-6722B 4_03 OMH-6727B...
  • Page 6 L I S T O F TA B L E S OMH-6727B...

  • Page 7: 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 xi).

  • Page 8: Safety Marking Symbols

    Terminal Terminal On: In position of a bistable push control. 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 OMH-6727B...
  • Page 9 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 10 If the instrument is damaged, file a claim with the carrier. The factory will supply you with a quotation for estimated costs of repair. You must negotiate and settle with the carrier for the amount of damage. OMH-6727B...

  • Page 11: Comments, Suggestions, And Problems

    WA R R A N T Y 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 12 WA R R A N T Y in a container with at least 3 inches (7.5 cm) of compressible packaging material on all sides. We look forward to serving you even better in the future! OMH-6727B...
  • Page 13 Beam Alignment Considerations ........9 4_03 OMH-6727B...
  • Page 14 Troubleshooting Guide ......... . . 23 OMH-6727B...

  • Page 15: Introduction And Specifications

    PECIFICATIONS This manual contains operation and maintenance information for the OMH-6727B InGaAs Power / Wave Head. The OMH-6727B may be used in conjunction with either the OMM-6810B Optical Multimeter or the LWM-6500B Laser Wavelength Meter. To get started immediately, first read Appendix B of the OMM-6810B Instruction Manual.

  • Page 16: Available Options And Accessories

    Devices and Radiological Health or ILX Lightwave. Refer Servicing only to qualified, authorized personnel. Available Options and Accessories The OMH-6727B must be coupled to the OMM-6810B Optical Multimeter. Other options and accessories available with the OMM-6810B are listed in the OMM-6810B manual.

  • Page 17: Specifications

    0.000 nW to 999.999 W Log Power -99.999 to 99.999 dBm / dB Resolution (Slow Update Rate) Linear Power 0.001 pW Log Power 0.001 dB Resolution (Medium / Fast Update Rate) Linear Power 0.01 pW Log Power 0.01 dB 4_03 OMH-6727B...
  • Page 18 Our goal is to design and produce the best optical test equipment available anywhere. To achieve this, we need your ideas and comments on ways we can improve out products. We invite you to contact us at any time with your suggestions. OMH-6727B...

  • Page 19: Operation

    Chapter 2 of the OMM-6810B Instruction Manual. Installation The OMH-6727B must be connected to the 6810B. Make sure the power to the main unit is turned off and connect the cable from the 6727B to the INPUT connector on the rear panel of the 6810B.

  • Page 20: Figure 2.1 Omm-6810B Front Panel

    The OMM-6810B/OMH-6727B is intuitively operated from the front panel keypad, indicator LEDs and dual displays. A drawing of the front panel is shown in Figure 2.1. Front panel functions which are not available with the OMH-6727B are outlined later in this Chapter.

  • Page 21: Figure 2.2 Rear Panel Input

    See Appendix A in the OMM-6810B Instruction Manual for a detailed list of error messages. Rear Panel Connections The OMH-6727B interfaces with the rear panel of the multimeter as described in the following paragraphs. Input Connector The OMH-6727B interfaces the main unit via the 26-pin high density “D”...

  • Page 22: Figure 2.3 Power Analog Out

    For example, if the full scale power for gain range three is 10 µ W and the displayed power is 5.000 µ W, then 5.0 volts is present on the POWER ANALOG OUT connector. Figure 2.3 Power Analog Out OMH-6727B...

  • Page 23: Figure 2.4 Omh-6722B Optical Measurement Head

    Beam Alignment Considerations The OMH-6727B is designed to provide a simple operating format. The beam from the source should be directed perpendicular to the face of the 6727B and directly into its aperture.

  • Page 24: Figure 2.5 Wavelength Setting

    Focused Beams The OMH-6727B also accepts converging beams. In high power applications be sure that the focus of the beam does not occur at the rear of the integrating sphere. Again, perpendicular beam entry to the Head is required.

  • Page 25: Zeroing

    "noise". If the entry aperture to the allow the OMH-6727B is blocked instead, the zeroing function will not work properly. This is especially true for low power applications or in areas of high background light. • If the DISPLAY ZERO indicator is illuminated, press the DISPLAY ZERO button once to disable the existing compensation factors.

  • Page 26: User Calibration

    C H A P T E R General Operating Procedures User Calibration It is possible to calibrate the OMH-6727B using a laser source of known power and wavelength. The calibration procedure is described in Chapter 6 of this manual. Press the CAL USER button to toggle the instrument in and out of the User Calibration Mode.

  • Page 27: Installing Fiber Optic Adapters

    C H A P T E R Installing Fiber Optic Adapters Installing Fiber Optic Adapters Use the following procedure to install Fiber Optic Adapters onto the OMH-6727B Measurement Head. • Locate the model AO270 threaded ring adapter and the two #2-56 X 3/16” cap screws that secure it to the Measurement Head.
  • Page 28 O P E R A T I O N C H A P T E R Care and Maintenance OMH-6727B...

  • Page 29: Command Reference

    A complete reference describing the syntax and usage of each device- dependent command is provided in Chapter 4 of the OMM-6810B Instruction Manual. Refer to the LWM-6500B Instruction Manual if the OMH-6727B is being used in conjunction withe the Laser Wavelength Meter.

  • Page 30: Error Messages

    Sets the power autoranging mode on or off POWer:AUTO? None Returns the status of power autoranging POWer:MODE Sets the power display units POWer:MODE? None Returns the power display units POWer:OFFSET Sets the power offset multiplier POWer:OFFSET? None Returns the power offset multiplier OMH-6727B...
  • Page 31 Returns the wavelength offset ∆λ WAVE:REFerence Sets the reference for WAVE:REFerence? None Returns the wavelength reference point ZERO None Starts the zeroing function ZERO? None Returns the status of the zeroing. Table 3.1 Device-Dependent Commands valid with the OMH-6727B 4_03 OMH-6727B...

  • Page 32: Figure 3.1 Command Path Structure

    Error Messages Command Name # Parameters Description Expected ATTen Enables/disables the attenuation function ATTen? None Returns the status of the attenuator Table 3.2 Device-Dependent Commands which are not usable with the OMH-6727B (root) :WAVE *CAL? BRIGHT :CAL :ENAB :HEAD :POWER :PRESELECT...

  • Page 33: Chapter 4 Calibration

    Do not attempt to disassemble the Optical Measurement Head. Calibration Overview It is possible to calibrate the OMH-6727B using a source of known wavelength and power. Calibrate the 6727B whenever performance verification indicates that calibration is necessary. The wavelength calibration consists of one point which shifts future measurements by the amount of the calibration.

  • Page 34: Manual Operation User Calibration

    • Identify ambient conditions and zero the instrument as described in Chapter 2. • Launch a laser of known wavelength and power into the OMH-6727B. • Start the calibration by pressing the CAL USER button to place the unit in User Calibration Mode.

  • Page 35: Programming A Fixed Offset To Wavelength And Power Measurements

    The User Calibration is preset at the factory. The factory preset calibration can be restored by pressing the CAL USER button on the 6810B so that the CAL USER indicator is off or by sending the GPIB command CAL:USER OFF. 4_03 OMH-6727B...
  • Page 36 C A L I B R A T I O N C H A P T E R Resetting the User Calibration OMH-6727B...

  • Page 37: Chapter 5 Troubleshooting

    This chapter is intended to be used as a guide when the OMM-6810B and OMH-6727B do not perform as expected. It is not a service manual, rather a guide to alleviate basic problems which may arise during operation. A more complete guide, including a GPIB troubleshooting guide, is provided in Chapter 7 of the OMM-6810B Instruction Manual.
  • Page 38 Troubleshooting Guide Symptom Causes and Corrective Actions • The OMH-6727B is designed to accurately measure the Measurement will not wavelength of a CW source with an amplitude instability of up to stabilize 40% depth of modulation. Ensure the laser source’s wavelength is stable and that any modulation is minimized.

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