LightWave Systems Thermostat TCM-39032 User's Manual
Contents
1. 10 Warm diated a as n aa asad 10 TEC Calibration Procedures 10 Local Operation Thermistor Calibration 10 TCM 39032 i ii TCM 39032 TABLE OF CONTENTS Remote Operation Thermistor Calibration 11 Local Operation AD590 Sensor Calibration 12 Remote Operation AD590 Sensor Calibration 12 Local Operation LM335 Sensor 13 Remote Operation LM335 Sensor 14 Local Operation RTD Sensor Calibration with TSC 595 Option 15 Remote Operation RTD Sensor Calibration with TSC 595 Option 16 Local Operation ITE Current 17 Remote Operation ITE Current Calibration 18 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 Spec2. A User s Guide att Temperature Control Module TCM 39032 LX Lig Mwene Photonic Test amp Measurement Instrumentation ILX Lightwave Corporation P O Box 6310 Bozeman MT U S A 59771 U S amp Canada 1 800 459 9459 International Inquiries 406 586 1244 Fax 406 586 9405 E mail support ilxlightwave com www ilxlightwave com 10011703 ROO 06 03 Chapter 1 Chapter 2 Chapter 3 TABLE OF CONTENTS TABLE OF CONTENTS Safety Information and the iii General Safety Considerations iii Safety Marking Symbols iv Comments Suggestions and Problems vii Introduction and Specifications Product Overview 1 Specifications cru ed etat ao RIP tan ae 2 Installation 4 Operation SENSOR SELECT Switches 6 TEC Connector ken knn a en kan kenn onon 7 TEC Grounding Considerations 7 TEC Interlock 2 hate eaa Petes oc 7 Booster Operation 8 Calibration Recommended Equipment 9 Environmental Conditions
3. RTD 1 T C1 10 3 C2 10 In 10 In R 5 T in Kelvin T C1 C27 V 10 mV K 273 15 T C1 C2 I 1 pA 9K 273 15 T C1 C2 R 100 2 5 5 Temperature control range depends primarily on the type of thermistor and TE module used The range can be extended higher and lower by selecting the appropriate components See Appendix B for more details 6 Accuracy figures quoted are typical for a 10 Kohm thermistor accuracy figures are relative to calibration standard Both resolution and accuracy are dependent on the user defined configuration of the instrument 7 Accuracy depends on the sensor model selected both resolution and accuracy are dependent on the user defined configuration of the instrument RTD operation requires TSC 595 option 8 Over any 1 hour period half scale output short term temperature stability is a strong function of the thermal environment of the thermistor and TE module Room air currents in particular can easily cause fluctuations of 0 1 C in an exposed mounting configuration 9 Over any 24 hour period half scale output Our goal is to make the best laser diode instrumentation 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 TCM 39032 3 INTRODUCTION AND SPECIFICATIONS CHAPTER 1 Installation Installation This section describes the procedur
4. ILX LIGHTWAVE CORPORATION warrants this instrument to be free from defects in 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
5. Release the PARAMETER SET switch to store the first calibration value After the SET switch is release the LDC 3900 will beep and be ready for the next calibration value Remove the 120 Q resistor from the LDC 3900 Measure and record the resistance of a precision 80 Q metal film resistor Connect the precision 100 Q metal film resistor at the sensor input of the TCM 39032 pins 7 and 8 Press and hold in the PARAMETER SET switch and turn the ADJUST knob until the TEC display indicates the same resistance as recorded in Step 3 Release the PARAMETER SET switch to store the new value into non volatile memory on the TCM 39032 After the SET switch is released the LDC 3900 will beep and return to its former state before calibration TCM 39032 CHAPTER 3 15 3 CALIBRATION CHAPTER TEC Calibration Procedures Remote Operation RTD Sensor Calibration with TSC 595 Option The following procedure is for calibrating the RTD sensor so that the measured temperature will be as accurate as possible This procedure is for remote operation 1 Set the SENSOR SELECT switch back panel to the RTD position 2 Measure and record the exact resistance of a 120 Q metal film resistor A 4 point probe resistance measurement is recommended Connect the 120 Q metal film resistor to the sensor input of the TCM 39032 pins 7 and 8 3 Enter the TEC CHAN x command over the GPIB to select the channel of the TCM 39032 to be calibrated
6. the LDC 3900 will beep and return to its former state before calibration 7 Switch the THERM RANGE switch back panel to the 10uA position and repeat this procedure with the other resistor Remote Operation Thermistor Calibration The following procedure is for calibrating the 100 uA and 10 uA constant current sources so that the thermistor resistances for these ranges will be as accurate as possible This procedure is for remote GPIB operation 1 Set the SENSOR SELECT switch bank panel to the THERM position and set the THERM RANGE switch to the 100 LA position 2 Measure and record the exact resistance of the metal film resistors A 4 point probe resistance measurement is recommended 3 Connect the correct metal film resistor to the TCM 39032 thermistor input pins 7 and 8 Use nominal values of 10 for the 100 uA setting and 100 for the 10 uA setting 4 Enter the TEC CHAN x command over the GPIB to select the channel of the TCM 39032 to be calibrated where x the channel number Enter the TEC CAL SENsor command The TEC display will show the resistance value The LDC 3900 will beep when it is ready to accept a new calibration value If this value is to be measured and entered remotely via a GPIB controlled DMM for example the measured value of the resistance should not be entered until the LDC 3900 is ready to receive it The LDC 3900 will be ready to receive the resistance value when after a TEC
7. where x the channel number Enter the TEC CAL SENsor command over the GPIB The TEC display will show the voltage in mV The LDC 3900 will beep when it is ready to accept a new calibration value 4 Input the actual resistance in KO measured by the external DMM as an lt nrf value via the TEC R lt nrf value gt command If this value is to be measured and entered remotely via a GPIB controlled DMM for example the measured value of the current should not be entered until the LDC 3900 is ready to receive it The LDC 3900 will be ready to receive the actual resistance value when after a TEC CAL SENsor query is sent the response from the LDC 3900 is 1 Remove the 1200 resistor from the LDC 3900 Measure and record the resistance of a precision 80Q metal film resistor Connect the precision 100Q metal film resistor at the sensor input of the TCM 39032 pins 7 and 8 Input the actual resistance for the second resistor in measured by the external DMM as an lt nrf value gt via the TEC R lt nrf value gt command 5 Once the second TEC R value is sent the LDC 3900 will beep and return to its former state before calibration The OPC query may be used after the TEC R value is sent to determine when the calibration is completed The operation complete flag bit O of the Standard Event Status Register may be used to trigger a service request This type of interrupt is enab
8. CAL SENsor query is sent the response from the LDC 3900 is 1 5 Inputthe actual resistance in measured by the external DMM as an nrf value via the TEC R nrf value gt command After the TEC R value is entered the query may be used to determine when the calibration sequence is done However the WAI command or query should not be issued until after the expected TEC R value is entered or the system will hang This happens because the LDC 3900 will wait indefinitely for an input yet not allow any input until the calibration is finished 6 Once the TEC R value is sent the LDC 3900 will beep and return to its former state before calibration The OPC query may be used after the TEC R value is sent to determine when the calibration is completed The operation complete flag bit O of the Standard Event Status Register may be used to trigger a service request This type of interrupt is enabled by setting bit 0 of the Service Request Enable Register via the ESE command and bit 5 of the Service Request Enable Register via the SRE command Service request SRQ handling depends on 06 03 TCM 39032 11 12 CHAPTER 3 TCM 39032 CALIBRATION TEC Calibration Procedures the GPIB hardware Refer to the GPIB manual for details 7 Switch the THERM RANGE switch back panel to the 10 LA position and repeat this pro
9. ESE command and bit 5 of the Service Request Enable Register via the SRE command Service request SRQ handling depends on the GPIB hardware Refer to the GPIB manual for details 14 TCM 39032 Lightwave 06_03 Local Operation RTD Sensor Calibration with TSC 595 Option The following procedure is for calibrating the RTD sensor so that the temperature CALIBRATION TEC Calibration Procedures measurement will be as accurate as possible This is a two point calibration procedure This procedure is for local front panel operation The next section will cover remote calibration 1 Set the SENSOR SELECT switch back panel to the RTD position position 05 Select the TCM 39032 for calibration by pressing the appropriate ADJUST LAS TEC switch so that the TEC indicator is orange Measure and record the resistance of a precision 120Q metal film resistor Connect the resistor at the sensor input of the TCM 39032 pins 7 and 8 Enter the TEC sensor calibration mode by pushing the GPIB LOCAL and TEC DISPLAY R switches at the same time The sensor code SENSOR SELECT switch position value will be displayed for 2 seconds After this the TEC display will indicate sensor reference resistance in KQ The LDC 3900 will beep when it is ready to accept a new calibration value Press and hold in the PARAMETER SET switch and turn the ADJUST knob until the TEC display indicates the same resistance as shown in Step 2
10. covered by this warranty 5 Secure the packing box with fiber reinforced strapping 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 TCM 39032 v WARRANTY 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 vi TCM 39032 Ii ILX Lightwave 06_03 WARRANTY 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 PRONS issus Oia dee 800 459 9459 or 406 586 1244 E2X M Ott oto tate bape
11. of the TCM 39032 include Service free modularity calibration information is stored on the TCM 39032 Closed case calibration Operational with most thermistors and IC and RTD temperature sensors e Flexible setup with LDC 3900 Save Recall front panel functions e High temperature stability better than 0 01 C over 24 hours RTD sensor capability when ordered with TSC 595 Lightwave TCM 39032 1 CHAPTER 1 1 INTRODUCTION AND SPECIFICATIONS Specifications Specifications TEC Output Output Type Bipolar constant current source Compliance Voltage 8 Volts Maximum Current Output 4 Amps Maximum Output Power 32 Watts typical Current Limit Control Range 0 4A Current Limit Accuracy 50 Ripple Noise lt 1mArms TEC Display Display Type 5 digit green LED display Maximum Current Reading 4 000 Amps Maximum Temp Reading 199 9 C Current Resolution 0 001 Amps Current Display Accuracy 0 04 Amps Temperature Resolution 0 1 C Temperature Display Accuracy 0 5 C 1 All values relate to a one hour warm up period 2 Output current and power are rated into a one ohm load 3 Higher output powers can be accommodated by using a booster Contact ILX Lightwave for further information 4 Broadband noise is measured at 1 A output current over a bandwidth of 10 Hz 10 MHz Thermistor Resistance Resolution 0 01 KQ at 10 uA setting 0 001 at 100 uA s
12. place the TCM 39032 in its TEC Current Calibration mode The TEC output must be off to enter the TEC calibration mode The TEC display will show a value of about zero amps as the TCM 39032 calibrates itself for a zero current level After about 20 seconds the LDC 3900 will beep and the TEC display will begin to change to show about 1 amp the limit calibration value After the value on the TEC display is stable has not changed by more than one digit for several seconds the LDC 3900 is ready for the actual value to be entered Press and hold in the TEC DISPLAY SET switch and turn the ADJUST knob until the TEC display shows the correct value as calculated in Step 1 Release the TEC DISPLAY SET switch to store the new calibration value into non volatile memory on the TCM 39032 The LDC 3900 will then beep to indicate that it is ready for the user to enter the limit calibration value for its negative polarity output Repeat Steps 3 and 4 for negative polarity of the TEC output current After the value for the negative polarity of the TEC output is entered the TCM 39032 will automatically calibrate its current limits and set points After a few seconds the LDC 3900 will return to its former state before calibration The LDC 3900 will beep when it has finished storing all of the new calibration values TCM 39032 17 3 CALIBRATION CHAPTER TEC Calibration Procedures Remote Operation ITE Current Calibration The following procedu
13. LDC 3900 back panel 3 Grasp the TCM 39032 module by the handle which extends from the bottom of the back panel Gently but firmly pull the module out of the LDC 3900 4 If the TCM 39032 module is replaced in the LDC 3900 before the LDC 3900 is powered up again the LDC 3900 will retain its memory of all parameter settings and SAVE RECALL values However if the LDC 3900 is powered up and detects a change in its system configuration all parameters and SAVE RECALL information will be lost Calibration data is stored in the TCM 39032 module itself and is never lost due to reconfiguration of the LDC 3900 TCM 39032 Lightwave CHAPTER OPERATION This section describes the procedures for connecting and running a temperature controlled laser diode with the TCM 39032 module an on Ed Module Locking Screw 39032 432 WATT TE CONTROLLER Sensor Select C SENSOR SELECT 1005 ae Switch M a t LM335 RTD IT THERM THERM RANGE a 100 A R EE Thermistor Range Select Switch Module Locking Screw Figure 2 1 TCM 39032 Back Panel iit iLX Lightwave TCM 39032 5 2 OPERATION aS IS SENSOR SELECT Switches SENSOR SELECT Switches The SENSOR SELECT and THERM RANGE switches are used to select sensor type and in the case of thermistor sensor the source current level Table 2 1 shows the SENSOR SELECT THERM RANGE positions and correspon
14. alibration 6 8 KO for LM335 sensor calibration 16 8 KO for AD590 sensor calibration 118 Q and 1000 for RTD sensor calibration Resistors High Power 1 10 W low TCR for current calibration Table 3 1 Recommended Test Equipment Lightwave TCM 39032 9 10 CHAPTER 3 CALIBRATION Environmental Conditions Environmental Conditions Calibrate this instrument under laboratory conditions ILX recommends calibration at 23 C 1 0 C When necessary however the LDC 3900 Modular Laser Diode Controller may be calibrated at its intended use temperature if this is within the specified operating temperature range of 0 to 50 C Warm Up The LDC 3900 should be allowed to warm up for at least 1 hour before calibration TEC Calibration Procedures TCM 39032 There are only three calibration procedures required for the TCM 39032 when using thermistors Calibration of the resistance at the 10 microamp source current setting e Calibration of the resistance at the 100 microamp source current setting Calibration of the ITE current limits If linear temperature sensors are used they should be calibrated as outlined in the following sections If the user has the optional Model 1231 GPIB IEEE 488 2 interface remote calibration procedures are also listed Local Operation Thermistor Calibration The following procedure is for calibrating the 100 uA and 10 uA constant current sources so that the th
15. aller GAIN values in order to settle to the set temperatures in a desirable fashion See the LDC 3900 Instruction Manual for setting the GAIN value During operation if the status of the connection between the BOOSTER PRESENT and DIGITAL GROUND changes this event will be reported in the TEC Event Status Register When the GPIB option is implemented this event may be used to trigger a service request TCM 39032 Lightwave OPERATION Booster Operation CA TSE 2 06_03 TCM 39032 9 OPERATION CHAPTER 2 Booster Operation 10 TCM 39032 Lightwave CHAPTER 3 CALIBRATION The TCM 39032 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 shored digital calibration constants Recommended Equipment Recommended test equipment for calibrating the TCM 39032 is listed in the table below Equipment other than that shown in the table may be used if the specifications meet or exceed those listed If the LDC 3900 is equipped with the Model 1231 GPIB IEEE 488 2 interface the user may refer to the calibration procedures using the GPIB later in this chapter Description Mfg Model Specification DMM HP 3457A DC Amps 1 0 A 1 Resistance 10 0 02 Resistors Metal Film 10 KO for 100 LA calibration 100 KO for 10 c
16. cedure with the other resistor Local Operation AD590 Sensor Calibration The following procedure is for calibrating the AD590 sensor so that the temperature measurement will be as accurate as possible This procedure is for local front panel operation The next section will cover remote calibration of the AD590 sensor 1 Set the SENSOR SELECT switch back panel to the AD590 position position 04 Select the TCM 39032 for calibration by pressing the appropriate ADJUST LAS TEC switch so that the TEC indicator is orange Connect a precision 16 8 KQ metal film resistor and a precision ammeter in series at the sensor input of the TCM 39032 pins 7 and 8 Enter the TEC sensor calibration mode by pushing the GPIB LOCAL and TEC DISPLAY R switches at the same time The sensor code SENSOR SELECT switch position value will be displayed for 2 seconds After this the TEC display will indicate sensor reference current in LA The LDC 3900 will beep when it is ready to accept a new calibration value Press and hold in the PARAMETER SET switch and turn the ADJUST knob until the TEC display indicates the same current as shown on the precision ammeter Release the PARAMETER SET switch to store the new value into non volatile memory on the TCM 39032 After the SET switch is released the LDC 3900 will beep and return to its former state before calibration Remote Operation AD590 Sensor Calibration The following procedure is f
17. dic he te 406 586 9405 On the Web at 2 een Phe whole oa ees ae ilx custhelp com 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 TCM 39032 vii WARRANTY 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 viii TCM 39032 Lightwave CHAPTER 1 INTRODUCTION AND SPECIFICATIONS Product Overview The TCM 39032 32 Watt Temperature Control Module is a precision TEC control module for use in the LDC 3900 Modular Laser Diode Controller It may be installed in any of the four channel slots on the rear of the LDC 3900 and may readily be interchanged with any other LDC 3900 module Features
18. ding position code When the sensor switch is changed during TEC mode operation the new sensor position code will be indicated on the TEC display for three seconds SWITCH Position Code 100 pA 01 10 pA 02 LM335 03 AD590 04 RTD with TSC 595 05 Table 2 1 SENSOR SELECT Switch Positions The 10 uA and 100 uA designations are for the current source level thermistor sensor type is implied When using a thermistor the supply current depends on the thermistor operating temperature range and the required temperature resolution The AD590 sensor operates as a current source which is proportional to the sensed temperature The LM335 sensor operates as a voltage source which is proportional to the sensed temperature Both of these sensors are approximately linear over their operating ranges When they are used the constants C1 and C2 are used for a two point conversion TCM 39032 Lightwave 06_03 OPERATION TEC Connector GHETE R 2 TEC Connector At the right of center on the TCM 39032 back panel the user will find the 15 pin D connector for the TEC MODULE This connector is used for the input and output connections as shown by the pin out diagram below 1 2 Module 3 4 TE Module 5 TE Module Shield Sensor Shield 7 Sensor 8 Sensor 9 Analog Ground 10 Control Signal 11 Voltage Limit 12 Current Limit 13 Temp Limit 14 Booster Present 15 Digital Gr
19. econds Then it will set the output to 1 Amp for calibration 3 When the LDC 3900 is ready for the actual TEC current value to be entered a remote query of TEC CAL ITE will return a response of 1 When the measured value actual ITE is stable and the LDC 3900 is ready to proceed enter the value by issuing the TEC ITE nrf value gt command where the absolute value of the actual ITE measurement is the nrf value gt To ensure measurement stability of the actual value when the measurement is taken as a part of an automated test the DMM measurement should be polled in a loop When the measured value is consistent within one digit for 5 seconds for example the actual I value could be considered stable 4 Once the actual ITE value is entered via the TEC ITE command the new calibration value is stored into non volatile memorey on the TCM 39032 The LDC 3900 will then be ready for the User to enter the limit calibration value for its negative polarity output 5 Repeat steps 3 and 4 for the negative polarity of the TEC output current entering the absolute value of the measurement After the value for the negative polarity of the TEC output is entered the TCM 39032 will automatically calibrate its current limits and set points After a few seconds the LDC 3900 will return to it s former state before calibration The LDC 3900 will beep when it has finished storing all of the new calibration values 18 TCM 39032 L
20. ermistor resistances for these ranges will be as accurate as possible This procedure is for local front panel operation 1 Setthe SENSOR SELECT switch back panel to the THERM position and set the THERM RANGE switch to the 100 uA position Select the TCM 39032 for calibration by pressing the appropriate ADJUST LAS TEC switch so that the TEC indicator is orange 2 Measure and record the exact resistance of the metal film resistors A 4 point probe resistance measurement is recommended 3 Connect the correct metal film resistor to the thermistor input of the TCM 39032 pins 7 and 8 Use nominal values of 10 for the 100 uA setting and 100 for the 10 LA setting 4 Enter the TEC sensor calibration mode by pushing the GPIB LOCAL and TEC DISPLAY R switches at the same time The TEC display will become blank for 2 seconds then the sensor code SENSOR SELECT switch position value will be displayed for 2 seconds After this the TEC display will indicate sensor resistance in KO The LDC 3900 will beep when it is ready to accept a new calibration value Lightwave CALIBRATION TEC Calibration Procedures CHG TSE 3 5 Press and hold the PARAMETER SET switch and turn the ADJUST knob until the TEC display indicated the same resistance recorded for the metal film resistor 6 Release the PARAMETER SET switch to store the new value into non volatile memory on the TCM 39032 After the PARAMETER SET switch is released
21. es for installing and removing a TCM 39032 module from the LDC 3900 Note The LDC 3900 will power up in a default state upon detecting any change in the LDC 3900 system configuration such as installing a new module All parameters except SAVE RECALL settings will be set to default values based on the new configuration Calibration data is stored in the TCM 39032 module itself and is never lost due to reconfiguration of the LDC 3900 To install the TCM 39032 module into the LDC 3900 follow these steps 1 Turn the LDC 3900 power OFF 2 Place the TCM 39032 module into an open bay on the back of the LDC 3900 and slide the module into place There are tracks at the top and bottom of the bay which guide the module into place Push the module into place until the board edge clicks into place with an audible pop This indicates that the module is locked into place Screw the Module Locking Screws into the back panel to secure the module It is then ready to be used in the LDC 3900 3 Power up the LDC 3900 4 After the LDC 3900 has completed its power up sequence the ADJUST LAS indicator which corresponds to the newly installed TCM 39032 module should be lit in green indicating that the module has been recognized as a LASER current source in its respective bay To remove the TCM 39032 module from the LDC 3900 follow these steps 1 Turn the LDC 3900 power OFF 2 Unscrew the Module Locking Screws which secure the module to the
22. etting Thermistor Resistance Display Accuracy 0 23 at 10 uA setting 0 023 at 100 uA setting Temperature Control Temperature Range 99 C to 199 C 20 C to 70 C with typical 10K thermistor Thermistor Control e 20 C to 20 C e 50 C LM335 AD590 and RTD Control Resolution 0 1 C Accuracy 0 2 C Resolution 0 2 C Accuracy 0 2 C e Resolution 0 01 C Accuracy 0 1 C Short Term Stability 0 004 C or better over 1 hour Long Term Stability 0 01 C or better over 24 hours Sensor Type 2 wire thermistor AD590 current type LM335 voltage type Pt100 or other 100 Ohm RTD TCM 39032 Lightwave 06_03 INTRODUCTION AND SPECIFICATIONS Specifica tions CHAPTER 1 Usable Thermistor Range 25 to 450 typical LM335 Voltage V 25 C 2980 mW V4 10 mV K over rated sensor range LM335 Bias 1 AD590 Current 25 C 298 2 uA ly 1 pA 9K over rated sensor range AD590 Bias 8 VDC RTD PT100 Resistance R 25 C 109 73 ohms typical Thermistor Sensing Current 10 LA or 100 pA user selectable Temperature Calculation Methods AD590 or LM335 calibrated with two point method thermistors are calibrated by storing three constants of the Steinhart Hart equation in internal non volatile memory Thermistor LM335 AD590
23. he current value in LA The LDC 3900 will beep when it is ready to accept a new calibration value 4 Input the actual voltage in mV measured by the external voltmeter as an nrf value via the TEC R nrf value gt command If this value is to be measured and entered remotely via a GPIB controlled DMM for example the measured value of the current should not be entered until the LDC 3900 is ready to receive it The LDC 3900 will be ready to receive the voltage value when after a TEC CAL SENsor query is sent the response from the LDC 3900 is 1 After the TEC R value is entered the OPC query may be used to determine when the calibration sequence is done However the or WAI command or query should not be issued until after the expected TEC R value is entered or the system will hand This happens because the LDC 3900 will wait indefinitely for an input yet not allow any input until the calibration is finished 5 Once the TEC R value is sent the LDC 3900 will beep and return to its former state before calibration The OPC query may be used after the TEC R value is sent to determine when the calibration is completed The operation complete flag bit O of the Standard Event Status Register may be used to trigger a service request This type of interrupt is enabled by setting bit 0 of the Service Request Enable Register via the
24. ifically A CAUTION Caution indicates a potentially hazardous situation which can result in minor or moderate injury or damage to the product or equipment warnine Warning indicates a potentially dangerous situation which can result in serious injury or death Be Zk 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 e 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 vii 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 v for more information Lightwave TCM 39032 iii SAFETY SYMBOLS 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 follo
25. ightwave CALIBRATION TEC Calibration Procedures CHG TSE 3 After the last TEC ITE value is entered the OPC query may be used to determine when the calibration sequence is done However the OPC WAI command or OPC query should not be issued until after the last TEC ITE value is entered or the system will hang This happens because the LDC 3900 will wait indefinitely for an input yet not allow any input until the calibration is finished If the OPC query is issued during ITE calibration the time out period of the GPIB driver should be at least 1 minute to prevent the GPIB driver from timing out and hanging the system Refer to the GPIB driver instruction manual for information on setting the GPIB driver time out period The operation complete flag bit 0 of the Standard Event Status Register may be used to trigger a service request This type of interrupt is enabled by setting bit 0 of the Service Request Enable Register via the ESE command and bit 5 of the Service Request Enable Register via the SRE command Service request SRQ handling depends on your GPIB hardware Refer to the GPIB manual for details 06_03 TCM 39032 19 3 CALIBRATION CHAPTER TEC Calibration Procedures 20 TCM 39032 Lightwave
26. led by setting bit 0 of the Service Request Enable Register via the ESE command and bit 5 of the Service Request Enable Register via the SRE command Service request SRQ handling depending on the GPIB hardware Refer to the GPIB manual for details 16 TCM 39032 Lightwave CALIBRATION TEC Calibration Procedures CHG TSE 3 Local Operation ITE Current Calibration The following procedure is for calibrating the ITE constant current source for both polarities of current This procedure calibrates the zero current set point automatically then it automatically drives the TE current output to internally set limits of 1 amp When each of these values is reached and is stable the user enters the actual value of the current as measured by an external DMM The LDC 3900 then automatically calibrates the TEC current source and limits This procedure is for local front panel operation Remote calibration of the ITE current is covered in the next section 1 06 03 With the output off connect a 1 Q 10 W resistor across the TEC output terminals and use a calibrated DMM to measure the voltage across the resistor Calculate the current in the following steps by using Ohm s Law E R where E is the accurately measured voltage across the resistor and R is the accurately measured load resistance A 4 point probe resistance measurement is recommended Press the GPIB LOCAL and TEC DISPLAY ITE switches at the same time to
27. of the TCM 39032 pins 7 and 8 Enter the TEC sensor calibration mode by pushing the GPIB LOCAL and TEC DISPLAY R switches at the same time The sensor code SENSOR SELECT switch position value will be displayed for 2 seconds After this the TEC display will indicate sensor reference voltage in mV The LDC 3900 will beep when it is ready to accept a new calibration value Press and hold in the PARAMETER SET switch and turn the ADJUST knob until the TEC display indicates the same voltage as shown on the precision voltmeter Release the PARAMETER SET switch to store the new value into non volatile memory on the TCM 39032 After the SET switch is released the LDC 3900 will beep and return to its former state before calibration TCM 39032 13 3 CALIBRATION CHAPTER TEC Calibration Procedures Remote Operation LM335 Sensor The following procedure is for calibrating the LM335 sensor so that the temperature measurement will be as accurate as possible This procedure is for remote operation 1 Set the SENSOR SELECT switch back panel to the LM335 position position 03 2 Connect a precision 6 8 KO metal film resistor and a precision voltmeter in parallel at the sensor input of the TCM 39032 pins 7 and 8 3 Enter the TEC CHAN x command over the GPIB to select the channel of the TCM 39032 to be calibrated where x the channel number Enter the TEC CAL SENsor command over the GPIB The TEC display will show t
28. or calibrating the AD590 sensor so that the temperature measurement will be as accurate as possible This procedure is for remote GPIB operation 1 2 Set the SENSOR SELECT switch back panel to the AD590 position position 04 Connect a precision 16 8 KQ metal film resistor and a precision ammeter in series at the sensor input of the TCM 39032 pins 7 and 8 Enter the TEC CHAN x command over the GPIB to select the channel of the TCM 39032 to be calibrated where x the channel number Enter the TEC CAL SENsor command over the GPIB The TEC display will show the current value in LA The LDC 3900 will beep when it is ready to accept a new calibration value Input the actual current in LA measured by the external ammeter as an lt nrf value gt via the TEC R nrf value gt command Lightwave CALIBRATION TEC Calibration Procedures CHG TSE 3 If this value is to be measured and entered remotely via a GPIB controlled DMM for example the measured value of the current should not be entered until the LDC 3900 is ready to receive it The LDC 3900 will be ready to receive the current value when after a TEC CAL SENsor query is sent the response from the LDC 3900 is 1 After the TEC R value is entered the OPC query may be used to determine when the calibration sequence is done However the or WAI command or query should not be is
29. oster current source may be required if the TCM 39032 s 4 A 32 W output is not adequate to control a thermal load Whenever a connection is present between the BOOSTER PRESENT pin 14 and DIGITAL GROUND pin 15 of the back panel TEC Input Output connector the BOOST CONTROL signal voltage will be available for controlling a booster TEC current source The Booster Enabled condition is reported in the TEC Condition Status register When the GPIB option is implemented this condition may be used to trigger a service request The booster current source should use the control voltage which is available between the BOOST CONTROL pin 10 and AGND pin 9 of the back panel TEC connector When the BOOSTER PRESENT signal is connected to DIGITAL GROUND the LIM I value may be increased above the normal operation maximum of 4 0 Amps to a maximum of 10 0 Amps This is permitted for operation with a booster current source so that the CONTROL SIGNAL voltage may be 10 0 volts The CONTROL SIGNAL voltage is linearly proportional to the control current which is limited by the LIM parameter Whether or not a booster current source is used the TCM 39032 uses a sensor for controlling the temperature The feedback loop GAIN may require adjustment when a booster current source is used This is because a booster current source may be used with different thermal loads than those found with normal TCM 39032 operation and those loads may require larger or sm
30. ound Figure 2 2 Back Panel TEC Connector TEC Grounding Considerations DO NOT allow Sensor to connect to TEC Module or TEC Module directly or through a common ground Even a momentary connection when the output is off will cause damage to the instrument and or device For the TEC connector if any one terminal pin is grounded then no other terminal pin should be grounded Instrument damange caused by shorting these pins is not covered under warranty TEC Interlock On the back panel TEC connector pins 13 TEMP LIMIT and 15 DIGITAL GND form a type of interlock These two pins are normally not connected open circuit and must remain open for the TEC output to be on If there is a short circuit between these pins the TEC output will be disabled When this short circuit is TCM 39032 7 OPERATION CHAPTER 2 Booster Operation present the TEC Interlock Error condition event will be reported in the TEC Event Status REgister and the TEC Condition Status Register This circuit is useful for remote monitoring of temperature and therefore is labeled TEMP LIMIT on the back panel connector This interlock is intended for use with an external current booster A switch or control circuit of the user s own design is required It is left as an option which the user may or may not employ Booster Operation The TCM 39032 may be used to control a booster current source which accepts a control signal of up to 10 0 volts A bo
31. re is for calibrating the ITE constant current source for both polarities of current This procedure calibrates the zero current set point automatically then it automatically drives the TE current output to internally set limits of 1 amp When each of these values is reached and is stable the user enters the actual value of the current as measured by an external DMM The LDC 3900 then automatically calibrates the TEC current source and limits This procedure is for remote GPIB operation 1 With the output off connect a 1 10 W resistor across the TEC output terminals and use a calibrated DMM to measure the voltage across the resistor Calculate the current in the following steps by using Ohm s Law E R where E is the accurately measured voltage across the resistor and R is the accurately measured load resistance A 4 point probe resistance measurement is recommended 2 Enter the TEC CHAN x command over the GPIB to select the channel of the TCM 39032 to be calibrated where x the channel number Enter the TEC OUTPUT OFF command to force the output off Enter the TEC CAL ITE command over the GPIB to place the TCM 39032 in is TEC Current Calibration mode The LDC 3900 will automatically calibrate its zero output current and beep when it is ready to continue If the TEC output is not off the TEC current calibration mode cannot be entered The TCM 39032 will first perform a zero point calibration This takes about 20 s
32. sued until after the expected TEC R value is entered or the system will hand This happens because the LDC 3900 will wait indefinitely for an input yet not allow any input until the calibration is finished Once the TEC R value is sent the LDC 3900 will beep and return to its former state before calibration The OPC query may be used after the TEC R value is sent to determine when the calibration is completed The operation complete flag bit O of the Standard Event Status Register may be used to trigger a service request This type of interrupt is enabled by setting bit 0 of the Service Request Enable Register via the ESE command and bit 5 of the Service Request Enable Register via the SRE command Service request SRQ handling depends the GPIB hardware Refer to the GPIB manual for details Local Operation LM335 Sensor The following procedure is for calibrating the LM335 sensor so that the temperature measurement will be as accurate as possible This procedure is for local front panel operation The next section will cover remote calibration of the LM335 sensor 1 06_03 Set the SENSOR SELECT switch back panel to the LM335 position position 03 Select the TCM 39032 for calibration by pressing the appropriate ADJUST LAS TEC switch so that the TEC indicator is orange Connect a precision 6 8 KQ metal film resistor and a precision voltmeter in parallel at the sensor input
33. wing classifications are standard across all ILX Lightwave products 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 II 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 components Caution Earth Alternating Visible and or refer to ground current invisible laser A manual Terminal radiation Caution risk Protective Caution hot Frame or On In position of a bistable push control The slash l only denotes that mains are on Off Out position of a bistable push control The circle O only denotes that mains are off of electric Conductor surface chassis shock Terminal Terminal or or 1 0 39032 Lightwave 06_03 WARRANTY WARRANTY
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