Figure 2-3 - TEquipment.NET
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1. TON ol O I5 gt Model CA 322 1A 7 srr r il 00000000 ci O C 15 Terminal block 1 US DB 15 Model 854x Series Laser Diode Mount Quick Start Guide Getting Started 2 9 Laser diode package mounting Place the laser diode package in the connector see Figure 2 5 After securing it with the swing latches or ZIF socket lever fasten it to the block with hardware Figure 2 5 Laser diode package mounting NOTE Laser diode packages are not included with Model 854x mounts Hood 8544 TEC only S H C S Butterfl 2 56 x 1 4 Dual in line S H C S mount laser gf ga 4 places mount is 4 40x3 8 diode Ri laser diode u 2 places package package 6 Swing latches shown in unsecured position ZIF socket lever shown in unsecured position Model 8542 Model 8544 and Model 8544 TEC 8544 TEC only After the package is properly mounted install the aluminum 2x2x1 black hood This iso lates and stabilizes the laser diode package temperature from external ambient changes 2 10 Getting Started Model 854x Series Laser Diode Mount Quick Start Guide Connecting the Model 854x Using Figure 2 6 as a guide make electrical connections as desired Use the following procedure as a guide 1 Connect 8542 301 cable DB 9 e Connect the DB 9 end of the cable to the 854x s DB9 connector e Connect the banana plugs to the Input Output and 4 Wire Sense2. instrument They must be protected from electric shock and contact with hazardous live circuits Maintenance personnel perform routine procedures on the product to keep it operating properly for example setting the line voltage or replacing consumable materials Maintenance procedures are described in the manual The procedures explicitly state if the operator may perform them Otherwise they should be performed only by service personnel Service personnel are trained to work on live circuits and perform safe installations and repairs of products Only properly trained service personnel may perform installation and service procedures Keithley products are designed for use with electrical signals that are rated Installation Category I and Installation Category II as described in the International Electrotechnical Commission IEC Standard IEC 60664 Most measurement control and data I O signals are Installation Category I and must not be directly connected to mains voltage or to voltage sources with high tran sient over voltages Installation Category II connections require protection for high transient over voltages often associated with local AC mains connections Assume all measurement control and data I O connections are for connection to Category I sourc es unless otherwise marked or described in the Manual Exercise extreme caution when a shock hazard is present Lethal voltage may be present on cable connector jacks or test fixtures T
3. 2510 2510AT REFERENCED MOUNT SPECIFICATIONS Laser Diode Package Model 8542 8544 8544 TEC Socket DIL 14 pin Butterfly 14 pin Butterfly 14 pin Base Plate Position adjustable 0 1 centers 0 1 centers Laser Temperature Control TEMPERATURE RANGE 0 C to 80 C SENSOR TYPE Model 8544 TEC Only 10 kQ Thermistor AD592CN CONNECTOR CABLE ASSEMBLY SIGNALS Single Temperature Laser Diode Control Control Cable Dual Temp Control Cable 8542 301A CA 321 1A CA 322 1A Wire DB9 24x0 2500 Function DB15 Color 2510 Function 2 2510s Function 1 1 Yellow TEC Out TE HI A TEC Out 1 TE HI A 2 Triax Inner Shield 2 Green S Out TE HI A S Out 1 TE HI A Chassis 3 24x0 GND Screw GND 3 Red TEC Out TE LO A TEC Out 1 TE LO A Laser 4 4 Wire Sense LO Cathode 4 Black S Out TE LO A S Out 1 TE LO A Laser 5 In Out LO Cathode 5 6 Triax Outer Shield PD Cathode 6 White F In F In 7 Triax Signal PD Anode 7 Orange S In Sensor HI A S In 1 Sensor HI A Blue F In F In 8 4 Wire Sense HI Laser Anode 8 Brown S In Sensor LO A S In 1 Sensor LO A 9 In Out HI Laser Anode 9 Yellow TEC Out 2 TE HI B 10 Green S Out 2 TE HI B 11 Red TEC Out 2 TE LO B 12 Black S Out 2 TE LO B 13 White F In 14 Orange S In 2 Sensor HI B Blue F In 15 Brown S In 2 Sensor LO B HW 10 15 02
4. Fax 0183 630821 c o Regus Business Centre Frosundaviks All 15 4tr 169 70 Solna 08 509 04 679 Fax 08 655 26 10 13F 3 No 6 Lane 99 Pu Ding Road Hsinchu Taiwan R O C 886 3 572 9077 Fax 886 3 572 9031 Copyright 2002 Keithley Instruments Inc Printed in the U S A 10 02
5. The following are the A B and C coefficients for a 10K thermistor A 1 129241 x 1073 B 2 341077 x 107 C 0 877547 x 107 External and Internally cooled device connection NOTE This configuration uses dual Model 2510s This configuration uses two Model 2510s 2510 AT and a cable CA 322 to actively control the temperature of the DUT using its internal TEC as well as the fixture TEC This configuration will require additional wiring by the user See Figure 2 3 and Table 2 2 for details Autotuning The Keithley Model 2510 series of TEC controllers utilize a Proportional Integral and Derivative PID algorithm to optimize settling time and stability In the past the P I and D values had to be determined in a time consuming manual method of trial and error The Keithley Model 2510 AT Autotuning TEC Sourcemeter accelerates test setup and temper ature control optimization This is accomplished by automatically determining the PID coefficients for a particular thermal load The following two sets of coefficients are returned to the Model 2510 AT e coefficients optimized for minimum settling time e coefficients optimized minimum overshoot Use GPIB to control autotuning front panel control is not available Model 854x Series Laser Diode Mount Quick Start Guide Getting Started 2 15 For more details on the Keithley Model 2510 2510 AT and Autotuning refer to the Model 2510 2510 AT User s Manual and the Keithley Applicatio
6. new Revision includes a revised copy of this print history page Revision A Document Number 854x 903 01 ii August 2002 All Keithley product names are trademarks or registered trademarks of Keithley Instruments Inc Other brand names are trademarks or registered trademarks of their respective holders KEUS Safety Precautions The following safety precautions should be observed before using this product and any associated instrumentation Although some instruments and accessories would normally be used with non hazardous voltages there are situations where hazardous conditions may be present This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury Read and follow all installation operation and maintenance information carefully before using the product Refer to the manual for complete product specifications If the product is used in a manner not specified the protection provided by the product may be impaired The types of product users are Responsible body is the individual or group responsible for the use and maintenance of equipment for ensuring that the equip ment is operated within its specifications and operating limits and for ensuring that operators are adequately trained Operators use the product for its intended function They must be trained in electrical safety procedures and proper use of the
7. 2 Safety symbols and terms i 1 2 Inspection 1 id aoe ieee 1 3 Product overviewintia ati iala lina tote estenesseabeoseaces 1 3 Butterfly style mount ie 1 3 Dual in line mount c ina se 1 3 Available models iii nia iii 1 3 Configuration cinisello nani ir 1 4 2 Getting Started Laser safety precautions ii 2 2 Wiring the mount pinout configuration in 2 3 Laser diode package MOUNTING i 2 9 8544 TEC 011Y ur iosa anal 2 9 Connecting the Model 854x e 2 10 Photodiode connection ie 2 12 Unbiased internal diode connection procedure 2 12 Biased internal diode connection procedure 2 12 Unbiased low noise internal diode connection procedure 2 13 TEC cooled devices ucraina 2 13 Externally cooled device connection 2 14 External and Internally cooled device connection 2 14 Autotuning niro 2 14 Programming example Model 2510 TEC SourceMeter 2 16 List of Illustrations 2 Getting Started Figure 2 1 Removing the bottom plate i 2 4 Figure 2 2 Configuring pinouts 854x series not 8544 TEC 2 5 Figure 2 3 Configuring pinouts on 8544 TEC i 2 6 Figure 2 4 Cable pinouts i ua 2 8 Figure 2 5 Laser diode package MOUNTING i 2 9 Figure 2 6 Connect
8. 8544 TEC Model 8544 TEC Laser diode driver connection DB 9 Connector Function Chassis GND Laser Cathode PD Cathode PD Anode Laser Anode Input Screw Terminals O 8 S S 8 O 8 DA DDAODO D eeeeeee TE cooler O module O Laser diode Temperature controller driver connection connection DB 9 Connector DB 15 Connector NOTE The 8544 TEC Fixture also comes with an Analog devices AD592CN temperature sensor installed but not connected NOTE Refer to Tables 2 1 and 2 2 for wiring charts Model 854x Series Laser Diode Mount Quick Start Guide Getting Started 2 7 Table 2 1 Model 8544 TEC DB 15 wiring chart pre wired NOTE This table contains the default connections DB 15 Pin Number Function 1 2 Fixture TE 34 Fixture TE 7 Fixture sensor 10K Thermistor Default 8 Fixture sensor 10K Thermistor Default Table 2 2 Model 8544 TEC DB 15 wiring chart optional NOTE This table contains the connections required for fixture and internal DUT TEC control Cable CA 322 DB 15 pin number Function 9 and 10 DUT TE 11 and 12 DUT TE 14 DUT sensor 15 DUT sensor 2 8 Getting Started Model 854x Series Laser Diode Mount Quick Start Guide Figure 2 4 Cable pinouts Model 8542 301A Banana plug 2 GND Lug Outer shield 3 lug Triax Model CA 321 1A o
9. Bangalore 560 025 INDIA 080 212 8027 Fax 080 212 8005 ITALY Viale San Gimignano 38 20146 Milano 02 48 39 16 01 Fax 02 48 30 22 74 JAPAN New Pier Takeshiba North Tower 13F 11 1 Kaigan 1 chome Minato ku Tokyo 105 0022 81 3 5733 7555 Fax 81 3 5733 7556 KOREA 2FL URI Building 2 14 Yangjae Dong Seocho Gu Seoul 137 888 82 2 574 7778 Fax 82 2 574 7838 NETHERLANDS Postbus 559 4200 AN Gorinchem 0183 635333 Fax 0183 630821 SWEDEN c o Regus Business Centre Frosundaviks All 15 4tr 169 70 Solna 08 509 04 679 Fax 08 655 26 10 TAIWAN 13F 3 No 6 Lane 99 Pu Ding Road Hsinchu Taiwan R O C 886 3 572 9077 Fax 886 3 572 9031 10 02 Model 854x Laser Diode Mount Quick Start Guide 2002 Keithley Instruments Inc AII rights reserved Cleveland Ohio U S A First Printing September 2002 Document Number 854x 903 01 Rev A Manual Print History The print history shown below lists the printing dates of all Revisions and Addenda created for this manual The Revision Level letter increases alphabetically as the manual undergoes sub sequent updates Addenda which are released between Revisions contain important change in formation that the user should incorporate immediately into the manual Addenda are numbered sequentially When a new Revision is created all Addenda associated with the previous Revi sion of the manual are incorporated into the new Revision of the manual Each
10. E is present connect it to safety earth ground using the wire recommended in the user documentation The IN symbol on an instrument indicates that the user should refer to the operating instructions located in the manual The A symbol on an instrument shows that it can source or measure 1000 volts or more including the combined effect of normal and common mode voltages Use standard safety precautions to avoid personal contact with these voltages The WARNING heading in a manual explains dangers that might result in personal injury or death Always read the associated information very carefully before performing the indicated procedure The CAUTION heading in a manual explains hazards that could damage the instrument Such damage may invalidate the war ranty Instrumentation and accessories shall not be connected to humans Before performing any maintenance disconnect the line cord and all test cables To maintain protection from electric shock and fire replacement components in mains circuits including the power transformer test leads and input jacks must be purchased from Keithley Instruments Standard fuses with applicable national safety ap provals may be used if the rating and type are the same Other components that are not safety related may be purchased from other suppliers as long as they are equivalent to the original component Note that selected parts should be purchased only through Keithley Instruments to maintain accuracy an
11. ED INCLUD ING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE THE REMEDIES PROVIDED HEREIN ARE BUYER S SOLE AND EXCLUSIVE REMEDIES NEITHER KEITHLEY INSTRUMENTS INC NOR ANY OF ITS EMPLOYEES SHALL BE LIABLE FOR ANY DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF ITS INSTRUMENTS AND SOFTWARE EVEN IF KEITHLEY INSTRUMENTS INC HAS BEEN ADVISED IN ADVANCE OF THE POSSIBILITY OF SUCH DAMAGES SUCH EXCLUDED DAM AGES SHALL INCLUDE BUT ARE NOT LIMITED TO COSTS OF REMOVAL AND INSTALLATION LOSSES SUSTAINED AS THE RESULT OF INJURY TO ANY PERSON OR DAMAGE TO PROPERTY KEITHLEY Keithley Instruments Inc 28775 Aurora Road Cleveland Ohio 44139 440 248 0400 Fax 440 248 6168 1 888 KEITHLEY 534 8453 e www keithley com Sales Offices BELGIUM Bergensesteenweg 709 B 1600 Sint Pieters Leeuw 02 363 00 40 Fax 02 363 00 64 CHINA Yuan Chen Xin Building Room 705 12 Yumin Road Dewai Madian Beijing 100029 8610 8225 1886 Fax 8610 8225 1892 FINLAND Tiet j ntie 2 02130 Espoo Phone 09 54 75 08 10 Fax 09 25 10 51 00 FRANCE 3 all e des Garays 91127 Palaiseau C dex 01 64 53 20 20 Fax 01 60 11 77 26 GERMANY Landsberger Strasse 65 82110 Germering 089 84 93 07 40 Fax 089 84 93 07 34 GREAT BRITAIN Unit 2 Commerce Park Brunel Road Theale Berkshire RG7 4AB 0118 929 7500 Fax 0118 929 7519 INDIA 1 5 Eagles Street Langford Town
12. KEITHLEY Model 8 54x Laser Diode Mount Quick Start Guide TEquipment An Interworld Highway LLC NET A GREATER MEASURE OF CONFIDENCE WARRANTY Keithley Instruments Inc warrants this product to be free from defects in material and workmanship for a period of 1 year from date of shipment Keithley Instruments Inc warrants the following items for 90 days from the date of shipment probes cables rechargeable batteries diskettes and documentation During the warranty period we will at our option either repair or replace any product that proves to be defective To exercise this warranty write or call your local Keithley representative or contact Keithley headquarters in Cleveland Ohio You will be given prompt assistance and return instructions Send the product transportation prepaid to the indicated service facility Repairs will be made and the product returned transportation prepaid Repaired or replaced products are warranted for the balance of the original warranty period or at least 90 days LIMITATION OF WARRANTY This warranty does not apply to defects resulting from product modification without Keithley s express written consent or misuse of any product or part This warranty also does not apply to fuses software non rechargeable batteries damage from battery leakage or problems arising from normal wear or failure to follow instructions THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLI
13. Rev A Page of 2 854x Laser Diode Mount Series Specifications GENERAL SPECIFICATIONS RECOMMENDED MAXIMUM RATINGS Drive Current Amps 2 Measured Voltage Volts 3 WEIGHT 1 0 lbs 0 45 kg DIMENSIONS 1 25 32 x 3 75 95 x 5 5 140 Notes 1 BRD The other SourceMeter offerings from Keithley 2400 2410 2425 and 2430 are not recommended for use with the 8542 301 and Laser Diode Mounts unless proper interlock and safety precautions are observed esp voltage protection The 8544 TEC unit is shipped with the 10 kQ Thermistor wired This is the more common requested configuration The AD592CN sensor wires are available but not connected The Triax inner shield is available on pin 2 of 8542 301A This will allow flexibility for the customer to exchange the wire in the LDM from pin 6 to pin 2 To use the second 2510 DB 15 pins 9 15 the customer must internally wire the 8544 TEC Mount to the DUT thermocouple See Quick Start Guide for wiring configuration Applies Ratings based on use of Mount with provided Cables and average majority of laser diode characteristics The weight and dimension is the mounting unit without the cables HW 10 15 02 Rev A Page 2 of 2 Table of Contents 1 General Overview General Information eee eeceeseceeeeeceeeceeeeseeeeeseseeeeseesaees 1 2 Warranty information ii 1 2 Contact information sssini risiini eas 1 2 SpPEchhcations senin i aa aio 1
14. annel 2 3 Set the source voltage to desired bias value for detector Model 854x Series Laser Diode Mount Quick Start Guide Getting Started 2 13 Unbiased low noise internal diode connection procedure This technique will provide the lowest noise measurements by eliminating ground loops between the instrument and the fixture but disables the ability to bias the internal diode See the Keithley 2500 2502 User s Manual Section 3 on the Product Information CD included with your shipment for more details NOTE This procedure uses a specific wiring configuration of the 854x series Remove the bottom plate and change the wiring configuration as detailed in the procedure Open the bottom cover of the 854x fixture 2 De solder the wire connected to PIN 6 on the DB 9 input connector See Wiring the mount pinout configuration on page 2 3 for internal wiring connections of the 854x fixture 3 Re attach wire previously connected to PIN 6 to PIN 2 on the DB 9 input connec tor Replace and secure the bottom cover of the 854x fixture 5 Connect cable instruments and DUT to the 854x see Connecting the Model 854x on page 2 10 6 Disable ground connect on the Model 2500 2502 From the front panel press CONFIG gt SRC lt n gt where n is 1 or 2 gt DISABLE e Remotely send SOUR1 GCON ON for channel 1 SOUR2 GCON ON for channel 2 7 Set the source voltage to OV This connection scheme does not allow for detector bias NOTE Pho
15. d functionality of the product If you are unsure about the applicability of a replacement component call a Keithley Instruments office for information To clean an instrument use a damp cloth or mild water based cleaner Clean the exterior of the instrument only Do not apply cleaner directly to the instrument or allow liquids to enter or spill on the instrument Products that consist of a circuit board with no case or chassis e g data acquisition board for installation into a computer should never require cleaning if handled accord ing to instructions If the board becomes contaminated and operation is affected the board should be returned to the factory for proper cleaning servicing 854x Laser Diode Mount Series Specifications This series covers the offering of Laser Diode Mounts LDM for use with Continuous LIV Test Solutions The following products 2400 LV 2420 2440 2500 2502 and 2510 2510AT are recommended for use with these products PRODUCTS The following lists the current products in the 854x Laser Diode Mount Series 8542 8544 Dual In Line Laser Diode Mount Bundle includes one 8542 301A and CA 321 1A Butterfly Laser Diode Mount Bundle includes one 8542 301A and CA 321 1A 8544 TEC Butterfly Laser Diode Mount Bundle includes one 8542 301A and CA 322 1A ACCESSORIES 2400 LV 2420 2400 SourceMeter Instruments Dual Photodiode Meter TEC SourceMeter Instruments AT Auto Tune feature 2500 2502
16. every Model 854x Laser Mount order e Model 854x Laser Mount Product Information CD ROM that contains a PDF of this Quick Start Guide e LIV cable 8542 301 use with the 2400 LV 2420 2440 and 2500 all 854x series models e Temperature control cables models CA 321 and CA 322 use with the 2510 Use the single cable CA 321 with the 8542 and 8544 and the dual cable CA 322 with the 8544 TEC Product overview WARNING Itis not recommended that the cable and mount be used with the fol lowing Keithley source products Models 2400 2410 2425 and 2430 These products can output hazardous voltages Model 854x LDMSs are specifically designed to provide for temperature and LIV Light Intensity Current Voltage testing on a Laser Diode package DUT not included Both butterfly and dual in line style mounts are available Butterfly mount e 14 pin swing latch flatpack test socket and mounting baseplate e 0 1 pin centers Dual in line mount e 14 pin zero insertion force socket e adjustable baseplate Available models See the product specifications for product list and key characteristics 1 4 General Overview Model 854x Series Laser Diode Mount Quick Start Guide Configuration The DB 9 and DB 15 connections are manually configured by changing pigtail connec tions on the internal screw terminal strips Refer to Section 2 for detailed information 2 Getting Started 2 2 Getting Started Model 854x Series Lase
17. f laser diode fixtures utilize a connection for monitoring internal photo diodes rear facet with the Keithley Model 2500 2502 Dual Photodiode Meter The stan dard wiring configuration of the 854x series allows the user to operate the internal photodiode in a biased or unbiased state Unbiased internal diode connection procedure NOTE This procedure uses the default standard wiring configuration of the 854x series the bottom does not have to be removed and configuration changed unless it has been changed from the default configuration 1 Connect cable instruments and DUT to the Model 854x see Connecting the Model 854x on page page 2 10 2 Enable ground connect on the Model 2500 2502 From the front panel press CONFIG gt SRC lt n gt where n is 1 or 2 gt ENABLE e Remotely send SOUR1 GCON ON for channel 1 SOUR2 GCON ON for channel 2 3 Set the source voltage to OV Biased internal diode connection procedure NOTE This procedure uses the default standard wiring configuration of the 854x series The bottom does not have to be removed and configuration changed unless it has been changed from the default configuration 1 Connect cable instruments and DUT to the 854x see Connecting the Model 854x on page page 2 10 2 Enable ground connect on the Model 2500 2502 From the front panel press CONFIG gt SRC lt n gt where n is 1 or 2 gt ENABLE e Remotely send SOUR1 GCON ON for channel 1 SOUR2 GCON ON for ch
18. he American National Standards Institute ANSI states that a shock hazard exists when voltage levels greater than 30V RMS 42 4V peak or 60VDC are present A good safety practice is to expect that hazardous voltage is present in any unknown circuit before measuring Operators of this product must be protected from electric shock at all times The responsible body must ensure that operators are prevented access and or insulated from every connection point In some cases connections must be exposed to potential human contact Product operators in these circumstances must be trained to protect themselves from the risk of electric shock If the circuit is capable of operating at or above 1000 volts no conductive part of the circuit may be exposed Do not connect switching cards directly to unlimited power circuits They are intended to be used with impedance limited sourc es NEVER connect switching cards directly to AC mains When connecting sources to switching cards install protective de vices to limit fault current and voltage to the card Before operating an instrument make sure the line cord is connected to a properly grounded power receptacle Inspect the con necting cables test leads and jumpers for possible wear cracks or breaks before each use When installing equipment where access to the main power cord is restricted such as rack mounting a separate main input pow er disconnect device must be provided in close proximity to the equ
19. ice For the most recent specifications refer to the web site at www keithley com Safety symbols and terms The following symbols and terms may be found on an instrument or used in this guide If or A is present connect it to safety earth ground using the wire recommended in the user documentation The A symbol on an instrument indicates that the user should refer to the operating instructions located in the manual The A symbol on an instrument shows that it can source or measure 1000 volts or more including the combined effect of normal and common mode voltages Use standard safety precautions to avoid personal contact with these voltages The WARNING heading used in this guide explains dangers that might result in personal injury or death Always read the associated information very carefully before performing the indicated procedure The CAUTION heading used in this guide explains hazards that could damage the instru ment Such damage may invalidate the warranty Model 854x Series Laser Diode Mount Quick Start Guide General Overview 1 3 Inspection The Model 854x Series Laser Diode Mount LDM was carefully inspected before ship ment After unpacking all items from the shipping carton check for any obvious signs of physical damage that may have occurred during transit Report any damage to the shipping agent immediately Save the original packing carton for possible future shipment The fol lowing items are included with
20. il from a connector loosen the applicable screw terminal and remove the wire To attach a pigtail to a connector determine the terminal number loosen the applicable screw terminal if needed insert the wire and secure with the screw Make sure all connections are secure 4 Attach the bottom plate of the mount securing with the four screws removed in step 2 2 4 Getting Started Model 854x Series Laser Diode Mount Quick Start Guide Figure 2 1 Removing the bottom plate NOTE Laser diode packages are not included with Model 854x mounts Model 8542 Model 8544 8544 TEC Dual in line NV mount KS 14 14 laser diode Be 8 package dla 0 1 7 Butterfly 7 mount laser diode package 4 places 4 places Bottom plate ate a Bottom p Model 854x Series Laser Diode Mount Quick Start Guide Getting Started 2 5 Figure 2 2 Configuring pinouts 854x series not 8544 TEC Model 854X Laser diode Temperature controller driver connection connection DB 9 Connector DB 15 Connector Pigtail DB 15 Pigtail Color Function Pin amp Color Function Chassis GND Orange TE Laser Cathode Grey TE PD Cathode Violet Sensor PD Anode Blue Sensor Laser Anode Input Screw Terminals Laser diode Temperature controller driver connection connection DB 9 Connector DB 15 Connector 2 6 Getting Started Model 854x Series Laser Diode Mount Quick Start Guide Figure 2 3 Configuring pinouts on
21. ing the Model 854x ii 2 11 List of Tables 2 Table 2 1 Table 2 2 Table 2 3 Table 2 4 Getting Started Model 8544 TEC DB 15 Wiring Chart Pre wired 2 7 Model 8544 TEC DB 15 Wiring Chart Optional 2 7 Internal TEC Specifications 8544 TEC n 2 14 Programming example rn nr 2 15 General Overview 1 2 General Overview Model 854x Series Laser Diode Mount Quick Start Guide General Information Warranty information Warranty information is located at the front of this guide Should your Model 854x Series Laser Diode Mount require warranty service contact the Keithley representative or autho rized repair facility in your area for further information When returning the unit for repair be sure to fill out and include the service form at the back of this guide to provide the repair facility with the necessary information Contact information Worldwide phone numbers are listed at the back of this guide If you have any questions please contact your local Keithley representative or call one of our application engineers at 1 800 348 3735 U S and Canada only Check www keithley com for additional infor mation Specifications NOTE Specifications are subject to change without notice Model 854x Series Laser Diode Mount specifications shown at the front of this guide were current at the time of duplication but they are subject to change without not
22. ipment and within easy reach of the operator For maximum safety do not touch the product test cables or any other instruments while power is applied to the circuit under test ALWAYS remove power from the entire test system and discharge any capacitors before connecting or disconnecting ca 5 02 bles or jumpers installing or removing switching cards or making internal changes such as installing or removing jumpers Do not touch any object that could provide a current path to the common side of the circuit under test or power line earth ground Al ways make measurements with dry hands while standing on a dry insulated surface capable of withstanding the voltage being measured The instrument and accessories must be used in accordance with its specifications and operating instructions or the safety of the equipment may be impaired Do not exceed the maximum signal levels of the instruments and accessories as defined in the specifications and operating in formation and as shown on the instrument or test fixture panels or switching card When fuses are used in a product replace with same type and rating for continued protection against fire hazard Chassis connections must only be used as shield connections for measuring circuits NOT as safety earth ground connections If you are using a test fixture keep the lid closed while power is applied to the device under test Safe operation requires the use of a lid interlock If or N
23. names are the property of Keithley Instruments Inc All other trademarks and trade names are the property of their respective companies KEITHLEY Keithley Instruments Inc Sales Offices BELGIUM CHINA FINLAND FRANCE GERMANY GREAT BRITAIN INDIA ITALY JAPAN KOREA NETHERLANDS SWEDEN TAIWAN 28775 Aurora Road Cleveland Ohio 44139 e 440 248 0400 Fax 440 248 6168 1 888 KEITHLEY 534 8453 e www keithley com Bergensesteenweg 709 B 1600 Sint Pieters Leeuw 02 363 00 40 Fax 02 363 00 64 Yuan Chen Xin Building Room 705 12 Yumin Road Dewai Madian Beijing 100029 8610 8225 1886 Fax 8610 8225 1892 Tiet j ntie 2 e 02130 Espoo Phone 09 54 75 08 10 Fax 09 25 10 51 00 3 all e des Garays 91127 Palaiseau C dex 01 64 53 20 20 Fax 01 60 11 77 26 Landsberger Strasse 65 82110 Germering 089 84 93 07 40 Fax 089 84 93 07 34 Unit 2 Commerce Park Brunel Road Theale Berkshire RG7 4AB 0118 929 7500 Fax 0118 929 7519 1 5 Eagles Street e Langford Town Bangalore 560 025 INDIA 080 212 8027 Fax 080 212 8005 Viale San Gimignano 38 20146 Milano 02 48 39 16 O1 Fax 02 48 30 22 74 New Pier Takeshiba North Tower 13F 11 1 Kaigan 1 chome Minato ku Tokyo 105 0022 81 3 5733 7555 Fax 81 3 5733 7556 2FL URI Building 2 14 Yangjae Dong Seocho Gu Seoul 137 888 82 2 574 7778 Fax 82 2 574 7838 Postbus 559 4200 AN Gorinchem 0183 635333
24. ns Note Optimizing TEC PID Coefficients Automatically with the Model 2510 AT Autotuning TEC SourceMeter Instrument Both of these are PDFs on the product information CD ROM received with your shipment NOTE Additional information is also available on the web at www keithley com Programming example Model 2510 TEC SourceMeter The code fragment contained in Table 2 4 is a subroutine that conditionally sets up the fol lowing Model 2510 operating modes Current protection limit 1A e Sensor type thermistor Thermistor sensor current range auto Thermistor sensor measurement range 10 k e Temperature setpoint set during program execution Table 2 4 Programming example Model 2510 TEC SourceMeter Private Sub comboTempOnOff_Click If comboTempOnOff Text ON Then Call send intKth2510 rst intStatus Call send intKth2510 sens curr prot lev 1 0 intStatus LA current limit Call send intKth2510 sens temp tran ther intStatus Thermistor sensor type Call send intKth2510 sens temp curr auto on intStatus Auto sensor current range Call send intKth2510 sens temp ther range 1e4 intStatus 10k ohm sensor resistance range Call send intKth2510 sour temp spo amp comboTempSetPoint Text intStatus Program setpoint Call send intKth2510 outp on intStatus Turn on output Call send intKth2510 meas res ac intStatus Get TEC AC resistance Call enter strData 100 intLength intKth2510 i
25. ntStatus txtTECRes Text strData Call send intKth2510 outp on intStatus Else Call send intKth2510 rst intStatus End If End Sub Service Form Model No Serial No Date Company List all control settings describe problem and check boxes that apply to problem Q Intermittent Q Analog output follows display U Particular range or function bad specify L IEEE failure Q Obvious problem on power up L Batteries and fuses are OK L Front panel operational U All ranges or functions are bad Q Checked all cables Display or output check one Q Drifts Q Unable to zero Q Unstable Q Overload Q Will not read applied input Q Calibration only I Certificate of calibration required O Data required attach any additional sheets as necessary Show a block diagram of your measurement including all instruments connected whether power is turned on or not Also describe signal source Where is the measurement being performed factory controlled laboratory out of doors etc What power line voltage is used Ambient temperature F Relative humidity Other Any additional information If special modifications have been made by the user please describe Be sure to include your name and phone number on this service form BE USA TEquipment An Interworld Highway LLC Company Specifications are subject to change without notice All Keithley trademarks and trade
26. of the 24x0 e Connect the triax connector to either Input Channel of the 2500 e Connect the ground lug to the ground screw of the 24x0 back panel 2 Connect the CA 321 CA 322 cable DB 15 NOTE Use cables 8542 301 and CA 322 with the Model 8544 TEC mount Use cables 8542 301 and CA 321 with all other 854x series mounts e Connect the DB 15 connector end of the CA 321 cable to the 8542 or 8544 DB 15 connector Connect the DB 15 connector end of the CA 322 if using the 8544 TEC e Connect the 8 pin terminal block end of the CA 321 CA 322 cable to the 2510 Input Output Connector WARNING Itis not recommended that the Model 854x series mounts cables be used with the following Keithley source products Models 2400 2410 2425 and 2430 These products can output hazardous voltages Model 854x Series Laser Diode Mount Quick Start Guide Getting Started 2 11 Figure 2 6 Connecting the Model 854x Ground lug Model 8542 301A N plugs 2 5 Model 2400 LV 2420 2440 Note Model 8544 TEC shown SOHICEMEter others similar Triax I Connector Note Sn ground connect N EEE som CA rari C LTAGE SOURCE LTA URCE Dual Photodiode Meter Optional Model CA 321 1A Model 2510 2510 AT TEC SourceMeter Model CA 322 1A Model 2510 2510 AT TEC SourceMeter 2 12 Getting Started Model 854x Series Laser Diode Mount Quick Start Guide Photodiode connection The 854x series o
27. r Diode Mount Quick Start Guide Laser safety precautions WARNING Model 854x Laser Diode Mounts do not contain a laser but are designed to be used with laser diode devices Use the following safety practices to protect operators and other users of this product from potential exposure to laser radiation e Protect operators from radiation and electrical hazards at all times e Make sure the installer complies with all applicable laws and regu lations on laser safety including but not limited to warning signs and operator training e Use test fixtures with an interlock that disables the circuit source outputs inhibited when the operator can be exposed to radiation Do not defeat the interlock under any operating conditions e Provide service personnel proper protection equipment e g laser safety goggles when servicing the test system e Make sure the customer s laser safety officer LSO reviews and approves all installations before the installation is put into opera tion Report all safety issues to the customer s LSO immediately e Do not leave any connections exposed when making connections Be sure that all external circuits are properly insulated Operate instruments in a safe manner Follow all applicable safety regula tions for installing configuring and using the Keithley Models 2400 LV 2420 2440 2500 2502 2510 and 2510 AT Each model as installed should be approved by the appropriate safety personnel such a
28. s the responsible Laser Safety Officer or equivalent Suggested starting points for workplace regulations and standards ANSI Z136 1 IEC 825 OSHA 29 CFR 1910 Be aware of workplace hazards strive to minimize them and work safely TEquipment An Interworld Highway LLC NET Model 854x Series Laser Diode Mount Quick Start Guide Getting Started 2 3 Wiring the mount pinout configuration The wiring to the laser diode is user configurable This provides flexibility to accommo date various pinout configurations Use the following procedure to configure the wiring Also refer to Figures 2 1 2 2 2 4 and the associated tables contained in the specifications located at the beginning of this manual Remove power from the device 2 Unscrew the four screws on the bottom of the mount Figure 2 1 to remove the bottom plate and allow access to the wires and terminal strip Figures 2 2 and 2 3 3 Configure the mounts wiring as desired For identification of the specific laser mount pinouts refer to the specific type of laser diode package either dual inline or butterfly in Figure 2 1 For wire identification refer to the pinouts and pigtail color codes for the DB 9 and DB 15 connectors Figures 2 2 and 2 3 A guide is also contained on the printed circuit board Cable pinouts are shown in Figure 2 4 For wire color use and function infor mation refer to the specifications shown at the front of this guide To remove a pigta
29. todiodes can be damaged by excess bias voltages in both the positive and reverse direction This guide assumes that the diode was oriented such that a positive bias voltage from the Model 2500 2502 would reverse bias the diode Always double check your wiring and connections to avoid damaging the device TEC cooled devices Many packaged laser diodes have TEC Peltier temperature control During laser oper ation the TEC is used to maintain the diode at a user specified temperature The Keithley 854x series of laser diode fixtures and cables are designed to work in conjunction with the Keithley Model 2510 and 2510 AT TEC Sourcemeter Instruments to provide an accurate and stable temperature control unit for cooled devices The Keithley 8544 TEC has an additional TEC located internal to the fixture It can be used to control the environmental temperature of packaged devices with internal cooling or to temperature control uncooled devices 2 14 Getting Started Model 854x Series Laser Diode Mount Quick Start Guide Table 2 3 Internal TEC Specifications 8544 TEC Specification Value Range Temperature range 0 80 C TEC Power 16 Watts TEC Maximum Voltage Current 7 6V at 3 9A Externally cooled device connection NOTE This configuration uses a single Model 2510 This is the default wiring for the 8544 TEC Fixture It utilizes the TEC and temperature sensor of the 8544 TEC fixture See Figure 2 3 and Table 2 1 for details
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