OMH-6703B Silicon Power Head
Contents
1. AP HOLI GPIB C POWER WAVELENGTH CAL VEW REF BRIGHT mi auto ATTN AUTO gt USER RATE ZOOM OWER REMOTE STORED m LOCAL RANGE A3 T 33 ao E91 E Figure 21 OMM 6810B Front Panel 6 m OMH 6703B Lightwave OPERATION Front Panel Controls Unused Functions The Multimeter function that are not utilized disabled when the OMH 6703B Silicon Power n Head is attached are shown to the right If a disabled AA button is pushed the 6810B will display the error code E 715 The Multimeter function WAVELENGTH AUTO shown to the AUTO right will not work to measure wavelength However this button may still be used to store preselected wavelengths STORE A All other switch functions perform as described in the OMM 6810B Instruction Manual Error Display Execution errors are indicated on the right display Errors are shown as E xxx where xxx is a three digit number representing the unique error Errors are displayed for three seconds or until the error causing condition is remedied whichever is longer See Appendix A in the OMM 6810B Instruction Manual for a detailed list of error messages Rear Panel Connections The OMH 6703B interfaces with the rear panel of the multimeter as described in the following paragraphs Input Connector The OMH 6703B Silic2. 13 Wam UP 13 Manual Operation User Calibration 14 Remote GPIB Operation User Calibration Using the OMM 6810B 14 Resetting the User Calibration 15 Chapter 4 Troubleshooting Introduction 17 Troubleshooting Guide 17 11 El A ii OMH 6703B Lightwave LIST OF FIGURES Figure 2 1 OMM 6810B Front Panel 6 Figure 2 2 Rear Panel Input 7 Figure 2 3 Power Analog Out 8 Figure 2 4 OMH 6703B Optical Measurement Head 9 Figure 2 5 Wavelength Setting 10 02 11 OMH 6703B vw vi OMH 6703B Lightwave SAFETY AND WARRANTY INFORMATION The Safety and Warranty Information section provides details about cautionary symbols used in the manual safety markings used on the instrument and information about the Warranty including Customer Service contact information Safety Information and the Manual Throughout this manual you will see the words Caution and Warning indicating potentially dangerous or hazardous situations which if not avoided could result in death serious or minor injury or damage to the product Specifically A CAUTION Caution indicates a potentially hazardous situation
3. User s Guide in Silicon Power Head N OMH 6703 MN Enc ove A Newport Corporation Brand ILX Lightwave Corporation 31950 Frontage Road Bozeman MT U S A 59715 U S amp Canada 1 800 459 9459 International Inquiries 406 556 2481 Fax 406 586 9405 ilx custhelp com www ilxlightwave com 70023802 February 2011 TABLE OF CONTENTS E a El El El E a Ei Table of Contents i List of Safety and Warranty vii Safety Information and the Manual vii General Safety Considerations vii Safety 5 viii Safety Marking Symbols ken ka a nen kanna viii ix Comments Suggestions and Problems xi Chapter 1 Introduction and Specifications Product Overview 1 Safety Considerations eese 1 Available Options and Accessories 2 Specifications 2 3 Chapter 2 Operation Installation x eoe ee 5 ADR A
4. Or mail to ILX Lightwave Corporation P O Box 6310 Bozeman Montana U S A 59771 www ilxlightwave com When you contact us please have the following information Model Number Serial Number End user Name Company Phone Fax Description of what is connected to the ILX Lightwave instrument Description of the problem 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 ILX recommends you insure the shipment If the original shipping container is not available place your instrument OMH 6727B xi 55 DOT 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 xii OMH 6727B Lightwave CHAPTER 1 INTRODUCTION AND SPECIFICA TIONS El a El mH E El LI E3 This manual contains operation and maintenance information for the OMH 6703B Silicon Power Head The OMH 6703B must be used in conjunction with the OMM 6810B Optical Multimeter or the LPA 9080 Laser Diode Parameter Analyzer To get started immediately read Appendix B of the OMM 6810B Instruction Manual first Product Overv
5. Program the wavelength of the calibrator laser source into the OMM 6810B using the procedure described in Chapter 2 Identify ambient conditions and zero the instrument as described in Chapter 2 Launch a laser of known power at the detector of the OMH 6703B Start the calibration by pressing the CAL USER button to place the unit in User Calibration Mode The LED above the CAL USER button will light Press the CAL SET button to initiate the User Calibration Procedure The left display will show CAL P The measured power is shown on the left display Adjust the displayed power to match the laser s known power using the POWER UP and DOWN arrow buttons If large adjustments are necessary hold down the UP or DOWN button to accelerate the change Press the CAL SET button to complete the calibration The unit returns to real time power measurements Remote GPIB Operation User Calibration Using the OMM 6810B Remote controlled User Calibration is described in the following procedure It may help to be familiar with the manual calibration procedure listed above before attempting it remotely Identify ambient conditions Block the laser beam from striking the detector of the OMH 6703B Start the calibration by clearing the status registers then programming the wavelength of the calibrator laser source into the OMM 6810B Execute and following GPIB commands CLS RANGE AUTO ON ZERO where xxx x is the wavelengt
6. uW mW W AP dBm dB Range Linear Power Log Power 0 000 nW to 999 999 W 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 OMH 6703B 3 4 OMH 6703B Specifications INTRODUCTION AND SPECIFICATIONS Right Display Wavelength Calibration Display Units nm cm AA Range 400 to 1100 nm 25000 to 9091 Resolution 1 nm 1 Bargraph Represents the percent of full scale power within the selected gain range Brightness 5 settings incrementally spaced from dark to brightest General Specifications Operating Temperature 10 C to 40 C Storage Temperature 40 C to 70 C Humidity non condensing Overall Dimensions lt 70 RH non condensing input power 1mW lt 85 RH non condensing input power gt 1 mW 68 6 mm diameter x 30 1 mm Weight lt 0 5 kg Input Port Diameter 6 mm Optical Stand Accommodations 8 32 tapped hole centered Fiber Optic Adapter FC SC ST Connector to Main Unit 26 pin high density sub D 3 An antistatic cover is included on the connector to the Multimeter To prevent damage from electro static discharge this cover should remain in place when the Optical Measurement Head is not connected to the Multimeter Our goal is to design and produce
7. la a El El mH Ej B BH E EJ This chapter describes how to calibrate the OMH 6703B Silicon Power Head The OMH 6703B Silicon Power Head has been sealed to protect internal components from damage and to maintain the factory calibration Do not attempt to disassemble the head Calibration Overview It is possible to calibrate the OMH 6703B using a source of known power and wavelength Calibrate the 6703B whenever performance verification indicates that calibration is necessary The power calibration consists of one point which changes future power measurements by the percentage calculated during the calibration Recommended Equipment It is recommended that gas line sources not laser diodes be used for calibration Ideal sources include gas lasers such as HeNe at 632 8 nm and spectral lamps with the proper line isolation filters such as a Cesium Lamp and a 845 nm 855 nm interference filter to isolate the 852 1 nm Cesium emission line An extremely stable laser diode may be used if it is lasing in a single mode and the wavelength is first measured with a calibrated optical spectrum analyzer Warm Up The OMM 6810B OMH 6703B should be allowed to warm up for at least 1 hour before calibration OMH 6703B m 13 II LX Lightwave CALIBRATION Manual Operation User Calibration Manual Operation User Calibration Front Panel execution of the User Calibration using the OMM 6810B is described in the procedure below
8. 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 Lightwave CHAPTER 2 OPERATION This chapter describes how to install and operate the OMH 6703B Silicon Power Head in conjunction with the OMM 6810B Optical Multimeter It is divided into sections covering installation power up front panel controls rear panel and general operation A detailed familiarization of the Multimeter s features is presented in Chapter 2 of the OMM 6810B Instruction Manual Installation The OMH 6703B must be connected to the 6810B Make sure the power to the main unit is turned off and connect the cable from the 6703B to the INPUT connector on the rear panel of the 6810B warnine Do not attach or remove the power head while power is applied to the Multimeter Please turn the power switch off when changing heads AN wan To avoid electrical shock hazard connect the meter to a properly earth grounded three prong receptacle only Failure to observe this precaution can result in severe injury or death Lightwave OMH 6703B 5 OPERATION Power Up Power Up Connect the multimeter to an AC power source Press the POWER switch to supply power to the device and start the power up sequence The power up sequence takes about six seconds Initially all LEDs and enunciators a
9. which can result in minor or moderate injury or damage to the product or equipment AN warnine Warning indicates a potentially dangerous situation which can result in serious injury or death Fe WARNING Visible and or invisible laser radiation Avoid direct exposure to the beam General Safety Considerations If any of the following conditions exist or are even suspected do not use the instrument until safe operation can be verified by trained service personnel Visible damage Severe transport stress 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 All instruments returned to ILX Lightwave are required to have a Return Authorization Number assigned by an official representative of ILX Lightwave Corporation See Returning an Instrument on page ix for more information Lightwave OMH 6727B vii SAFETY SYMBOLS This section describes the safety symbols and classifications Technical specifications including electrical ratings and weight are included within the manual See the Table of Contents to locate the specifications and other product information The following classifications are standard across all ILX Lightwave products
10. Indoor use only Ordinary Protection This product is NOT protected against the harmful ingress of moisture Class Equipment grounded type Mains supply voltage fluctuations are not to exceed 10 of the nominal supply voltage Pollution Degree II Installation overvoltage Category for transient overvoltages Maximum Relative Humidity lt 80 RH non condensing Operating temperature range of 0 C to 40 C Storage and transportation temperature of 40 C to 70 C Maximum altitude 3000 m 9843 ft This equipment is suitable for continuous operation Safety Marking Symbols This section provides a description of the safety marking symbols that appear on the instrument These symbols provide information about potentially dangerous situations which can result in death injury or damage to the instrument and other On In position of a bistable push control The slash only denotes that mains are on Off Out position of a bistable push control The circle O only denotes that mains are off components Caution Earth Alternating Visible and or refer to ground current invisible laser manual Terminal NU radiation Caution risk Protective Caution hot Frame or of electric Conductor surface chassis shock Terminal Terminal or 1 0 viii 6727 Lightwave WARRANTY ILX LIGHTWAVE CORPORATION warrants this instrument to be free from defects in
11. ations 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 Fiber Optic Cable A fiber optic adapter options AO271 AO272 273 and AO276 can be mounted onto the face of the OMH 6703B Measurement Head This threaded ring adapter cap option accepts a variety of fiber optic connector styles for direct coupling of a fiber optic cable to the head Setting the Wavelength It is important to program the 6810B with the wavelength of the laser being measured so the correct calibration factors are used to compute power The wavelength may be entered via the front panel or GPIB The 6810B will always be in Manual Wavelength Mode when using the 6703B Use the following procedure to set the wavelength via the front panel WAVELENGTH avi 2 STORE A A A2 OO Figure 2 5 Wavelength Setting 10 OMH 6703B Lightwave OPERATION General Operating Procedures Use the LEFT and RIGHT arrow buttons to select digit on the WAVELENGTH display that will be controlled by the WAVELENGTH UP and DOWN arrow buttons The selected digit will flash Use the WAVELENGTH UP and DOWN arrow buttons to increment or decrement the selected digit If no buttons are pressed in three seconds the displayed wavelength will be locked in and the digit will stop flashing Commonly used wavelengths may be stored or r
12. e Center for Devices and Radiological Health or ILX Lightwave WARNING Refer Servicing only to qualified authorized personnel Available Options and Accessories The OMH 6703B must be coupled to the OMM 6810B Optical Multimeter or the LPA 9080 Laser Diode Parameter Analyzer Other options and accessories available with the LPA 9080 and the OMM 6810B are listed in the 6810B and 9080 manuals 2 m OMH 6703B Lightwave 02 11 INTRODUCTION AND SPECIFICATIONS Specifications Specifications CHAPTER 1 The electrical performance specifications for the Optical Multimeter are found in the OMM 6810B Instruction Manual The Electro Optic performance specs for the OMH 6703B when coupled to the OMM 6810B Optical Multimeter are described below All parameters are measured at 25 C Input Specifications Power Accuracy 5 400 to 1100 nm Power Range 100 nW to 1 W 40 dBm 30 dBm Wavelength Range 400 to 1100 nm Sampling Rate Slow 16 samples 60 ms sample Medium 4 samples 9 60 ms sample Fast 1 sample 60 ms sample Input Bandwidth Slow 1 Hz Medium 10 Hz Fast 60 Hz Analog Output Specifications Analog output representing the power measurement is available at the rear panel of the multimeter Refer to the OMM 6810B Instruction Manual for details Display Left Display Power Display Units Linear Power Log Power pW nW
13. ed 6 Front Panel Controls 6 Unused Functions 7 02_11 OMH 6703B i ko m a Error Display eraras tee anes eed oad edad eee honed ka 7 Rear Panel Connections 7 Input Connector 7 Analog Output deze 8 General Operating Procedures 9 Warm up and Environmental Considerations 9 Beam Alignment Considerations 9 Diverging Beams Laser 10 Collimated Beams 10 Beains 10 Fiber Optic Cable 10 Setting the Wavelength 10 Zeroing bees ee Ed eee E 11 User Calibration sorde ex aa iin ea wer i PPP 12 Installing Fiber Optic Adapters 12 Care and Maintenance 12 Cleanirig 3 12 Chapter 3 Calibration Calibration Overview 13 Recommended Equipment
14. etrieved by using the WAVELENGTH BLUE SHIFT STORE A A1 A2 A3 and A4 buttons as described in Chapter 2 of the OMM 6810B manual Zeroing The DISPLAY ZERO function is used to remove the effects that ambient light has on the power measurement It is important to zero the multimeter with the OMH 6703B attached before taking measurements This is especially true ZERO for low input power applications or in cases of high ambient light intensity When measuring lower power levels avoid letting background radiation into the measurement head Pressing the DISPLAY ZERO button when the LED above the DISPLAY ZERO button is not lit starts the zeroing process While zeroing the 0 digit walks across both displays the LED above the DISPLAY ZERO indicator flashes Pressing the DISPLAY ZERO button when the DISPLAY ZERO indicator is illuminated disables the effects of the zero The procedure for zeroing the instrument is described below The beam from the optical source should be blocked at the source or turned off Note If a beam stop is used it should be positioned as close to the source as possible to allow the maximum collection of background noise If the entry aperture to the OMH 6703B 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 Ifthe LED above the DISPLAY ZERO indicator is illuminated press the DISPLAY ZERO button once
15. h of the calibrator laser source e Zero the instrument by issuing the following GPIB command ZERO e Wait for the zero to finish The controlling software can monitor the status of zeroing by sending the following query in a loop Exit the loop when the response is 1 ZERO Launch a laser of known wavelength and power at the detector of the 67038 Start the calibration by sending the following commands CAL USER ON 14 OMH 6703B Lightwave CALIBRATION Resetting the User Calibration CAL USER START The right display shows CAL P and the left display indicated the measured power Enter the known power using the following command CAL WAVESET xxxx xx 55 where is the known wavelength and ss is the units um nm or cm Enter the known power using the command CAL POWERSET xxxx xx ss where is the known power and sss is the suffix units see CAL POWERSET command in Chapter 4 of the OMM 6810B Manual The calibration is complete and the 6810B is performing real time power measurements Resetting the User Calibration The User Calibration is preset at the factory The factory preset calibration can be restored by pressing the CAL USER button when the CAL USER indicator is on 02_11 OMH 6703B 15 CALIBRATION Resetting the User Calibration 16 OMH 6703B Lightwave CHAPTER TROUBLES la El El mH El LI HOOTING El g
16. his manual to enter a new user calibration Installing Fiber Optic Adapters Use the following procedure to install Fiber Optic Adapters onto the OMH 6703B Measurement Head Locate the model AO270 threaded ring adapter and the two 42 56 X 3 16 cap screws that secure it to the Measurement Head Place the adapter onto the face of the Measurement Head and secure it using the two cap Screws The adapter is now ready to receive any AOXXX series screw on fiber optic adapter cap e g AO271 FC Screw the cap on until it bottoms out on the face of the Measurement Head Care and Maintenance The design of the Measurement Head is fairly robust however it should be handled with care Stress from dropping the Head or other mishandling could dislodge critical alignments within the Head effectively changing its response and nullifying its calibration It is also sensitive to electrostatic discharge When not in use replace the ESD protective cap that came with the Head on the D connector and store the Head in the ESD safe bag Cleaning In general avoid cleaning the interior of the Measurement Head especially by blowing into it or by using compressed air If minor dust or other particulates have entered the input aperture remove the contaminant using canned air or dry nitrogen Use short bursts while holding the head such that the aperture is directed downward 12 OMH 6703B Lightwave CHAPTER 3 CALIBRATION
17. iew The OMH 6703B Silicon Power Head when coupled to the OMM 6810B Optical Multimeter or the LPA 9080 Laser Diode Parameter Analyzer provides the capability to measure optical power from a laser source over a 70 dB dynamic range The uniform silicon detector used in the OMM 6703B is calibrated to an NIST traceable standard in 10 nm increments ensuring highly accurate measurements Easy mounting quick setup a two meter cable and low profile design makes the OMH 6703B Silicon Power Head easy to integrate into an experiment The multimeter can be integrated with other equipment via the optional GPIB IEEE 488 2 interface The 6703B can also be used for fiber optic measurement applications via an optional fiber optic adapter Safety Considerations The high brightness sometimes invisible light output of laser diodes and other laser sources poses a definite eye hazard Direct viewing of the laser output can produce retinal or corneal damage Absorption of the laser light by the eye causes localized heating and denaturing of tissue proteins The ANSI publication Z 136 1 The Safe Use of Lasers lists Maximum Permissible Exposure MPE levels for direct or intrabeam viewing of laser beams From the MPE levels a hazard zone may be computed for a particular laser and exposure time Lightwave OMH 6703B 1 INTRODUCTION AND SPECIFICATIONS Product Overview For more information concerning laser and laser diode safety contact th
18. ing tape or metal bands 6 Send the instrument transportation pre paid to ILX Lightwave Clearly write the return authorization number on the outside of the box and on the shipping paperwork ILX Lightwave recommends you insure the shipment If the original shipping container is not available place your instrument in a container with at least 3 inches 7 5 cm of compressible packaging material on all sides Repairs are made and the instrument returned transportation pre paid Repairs are warranted for the remainder of the original warranty or for 90 days whichever is greater 02 11 OMH 6727B ix 55 Claims for Shipping Damage When you receive the instrument inspect it immediately for any damage or shortages on the packing list 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 x NM OMH 6727B uix Lightwave 02 11 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 You may contact us in whatever way is most convenient PRONG aciei eee es 800 459 9459 406 586 1244 Le bee a brak ee eee 406 586 9405 On the ilx custhelp com
19. ity let both devices warm up for at least one hour Beam Alignment Considerations The 67038 is designed to provide a simple operating format The beam from the source should be directed perpendicular to the face of the 6703B and directly into its aperture Be sure the entrance angle does not exceed the specified 10 from perpendicular Be aware that certain lasers emit a significant amount of non lasing radiation This radiation can cause erroneous measurements if the source is placed too close to the measurement head The innovative ILX Optical Measurement Head offers easy access for many different source types Fiber Optic Adapter Mounting Holes iL uns 8 32 Post Mount Centered Aperture Figure 2 4 OMH 6703B Optical Measurement Head 02_11 OMH 6703B 9 OPERATION General Operating Procedures Diverging Beams Laser Diodes The OMH 6703B can measure the power of laser diodes without the need for complicated coupling optics For diverging lasers and laser diodes position the package as close as possible to the 6703B Collimated Beams The 67038 is capable of measuring the power of narrow beam lasers As with other lasers collimated beams should enter the aperture perpendicular to the face of the 6703B To maintain accuracy do not allow the beam to strike the edge of the entrance aperture Focused Beams The OMH 6703B also accepts converging beams In high power applic
20. libration Lightwave OMH 6703B 17 TROUBLESHOOTING Troubleshooting Guide 18 OMH 6703B Lightwave
21. material and workmanship for a period of one year from date of shipment During the warranty period ILX will repair or replace the unit at our option without charge Limitations This warranty does not apply to fuses lamps defects caused by abuse modifications or to use of the product for which it was not intended This warranty is in lieu of all other warranties expressed or implied including any implied warranty of merchantability or fitness for any particular purpose ILX Lightwave Corporation shall not be liable for any incidental special or consequential damages If a problem occurs please contact ILX Lightwave Corporation with the instrument s serial number and thoroughly describe the nature of the problem Returning an Instrument If an instrument is to be shipped to ILX Lightwave for repair or service be sure to 1 Obtain a Return Authorization number RA from ILX Customer Service 2 Attach a tag to the instrument identifying the owner and indicating the required service or repair Include the instrument serial number from the rear panel of the instrument 3 Attach the anti static protective caps that were shipped with the instrument and place the instrument in a protective anti static bag 4 Place the instrument in the original packing container with at least inches 7 5 cm of compressible packaging material Shipping damage is not covered by this warranty 5 Secure the packing box with fiber reinforced strapp
22. on Power Head interfaces the main unit via the 26 pin high density connector located on the lower left side of the rear panel Do not attach or remove the head while power is applied to the Optical Multimeter Please turn the power switch off when changing optical measurement heads Match the serial number on the BNC to 26 pin D adapter to the serial number on the head INPUT Figure 2 2 Rear Panel Input 02_11 OMH 6703B 7 OPERATION Front Panel Controls Analog Output Analog output representing the power measurement is located in the upper left corner of the 6810B rear panel The POWER ANALOG OUT is a non calibrated value between 0 and 10 volts representing the measured power as a percent of full scale power within the selected gain range For example if the full scale power for gain range three is 10 uW and the displayed power is 5 000 uW then 5 0 volts is present on the POWER ANALOG OUT connector ANALOG Figure 2 3 Power Analog Out 8 OMH 6703B Lightwave OPERATION General Operating Procedures General Operating Procedures The following sections present some guidelines for operating the OMM 6810B with the OMH 6703B Warm up and Environmental Considerations The Multimeter and Measurement Head should operate at an ambient temperature between 10 and 40 C and a relative humidity less than 85 Storage temperatures should be between 40 and 70 C To achieve rated stabil
23. re illuminated and the seven segment displays denote 8 Then all LEDs and the displays are turned off while the microprocessor executes a device self test Should the self test fail error message E 720 is displayed The multimeter then loads personality and calibration data from the measurement head The left display indicates 6703 and the firmware version is shown on the right display If an error occurs while loading data message E 711 is displayed If an incompatible head is connected E 713 is displayed If a measurement head is not connected both displays show until a head is attached Appendix A in the OMM 6810B Instruction Manual describes the error messages At power up the multimeter is configured to the same state that was present when the power was last turned off Front Panel Controls The OMM 6810B OMH 6703B 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 6703B are outlined later in this chapter Refer to the OMM 6810B Instruction Manual for descriptions of each front panel switch function OMH 6703B AEH C c Lichtteveme 68108 OPTICAL MULTIMETER DISPLAY IBI 73 F3 Hi mm m LOG LIN nm om Adad w w HILL
24. t Introduction This chapter is intended to be used as a guide when the OMM 6810B and OMH 6703B 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 Troubleshooting Guide If you have difficulty using the 67038 refer to the symptoms listed here Common causes and corrective actions are listed here If problems persist contact your ILX Lightwave representative at 406 586 1244 Symptom Causes and Corrective Actions Measurement seems e Check for tight connections between the 6810B and the 67038 unstable and ensure other noisy electronic devices are not located near the head In cases of low input power and or high background light try working in a dark environment and be sure to zero the instrument as described in Chapter 2 Display shows The 67038 is not connected to the Multimeter Display shows OL This condition occurs when the laser s input power exceeds the maximum allowed for the selected gain range If in manual mode press the DOWN switch to select the next lower gain range Measurements are not Be certain the zeroing procedure has been performed correctly as accurate at a known power described in Chapter 2 standard It may be necessary to perform the User Ca
25. to disable the existing compensation factors e Press the DISPLAY ZERO button While zeroing the digit walks across the display and the DISPLAY ZERO indicator above the button flashes When zeroing is complete the DISPLAY ZERO button is lighted The process takes about 10 seconds Couple the optical source to the power head Accurate power measurements are displayed Note If the ambient environmental conditions change e g the room lights are turned on or off or the attenuator is added or removed the instrument must be re zeroed to maintain its accuracy Pressing the DISPLAY ZERO button again disables the compensating factors and the LED above the DISPLAY ZERO button is turned off 02_11 OMH 6703B 8 11 OPERATION Installing Fiber Optic Adapters User Calibration It is possible to calibrate the OMM 6810B OMH 6703B using a CAL laser source of known power and wavelength Pressing the CAL USER button to toggles the instrument in and out of the User Calibration Mode When the LED above the CAL USER button is lighted the unit employs the user defined calibration which has been stored in the Optical Measurement Head Pressing the E CAL USER button when the CAL USER LED is lit causes the instrument to revert to factory calibration and the LED to go out Pressing the CAL SET button while the LED above the CAL USER button is lighted initiates the user calibration procedure Refer to Chapter 4 of t
Download Pdf Manuals
Related Search