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THORLABS ITC5000, Руководство по эксплуатации

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3.2 Menu items 

 

 

ITC5000

 / page 37 

 

3.2.3.1  LD Current Control Setup 

 
 

 

Figure 11  Laser Diode Setup Menu 

Select the laser diode polarity between AG (Anode Grounded) or CG (cathode 
Grounded). 
Select the photo diode polarity between AG (Anode Grounded) or CG (cathode 
Grounded). 
Select the operating mode between Constant Power and Constant Current mode. 
 
To get a precisely calibrated display of the laser power in the main screen, you must 
set the corresponding photo diode responsivity (A/W) in the corresponding field. You 
can use the up- and down-arrows or enter the value numerically. 
 
If you want to run your photo diode with a bias voltage, enter the corresponding bias 
voltage and enable the bias by marking the checkbox ‘Enable PD bias’. 
 
Clicking ‘Apply’ sends the new settings to the TXP. 
 

NOTE 

You can not make these changes if the laser current or the TEC current 

are switched on. All entry fields are inactive then. 

Содержание ITC5000

Страница 1: ...Operation Manual Thorlabs TXP Series Laser Current and Temperature Controller ITC5000 2004...

Страница 2: ...Version 2 10 Date 11 Oct 04 Copyright 2004 Thorlabs GmbH...

Страница 3: ...diode 15 1 7 3 Connecting the Monitor diode 16 1 7 4 Connecting interlock and status LED 17 1 7 5 Connecting the thermistor 18 1 7 6 Connecting the TEC element 19 2 Getting Started 20 2 1 Precondition...

Страница 4: ...35 3 2 3 The Setup menu 36 3 2 4 The cards menu 40 3 2 5 The Preferences menu 40 4 Service and Maintenance 43 4 1 Troubleshooting 43 4 2 Service 44 5 Listings 45 5 1 List of Acronyms 45 5 2 List of f...

Страница 5: ...cism or ideas We and our international partners are looking forward to hearing from you Thorlabs GmbH This part of the instruction manual contains every specific information on how to handle and use a...

Страница 6: ......

Страница 7: ...o discharge your body before changing cards or lasers and apply the general rules for handling MOS devices This precision device is only dispatchable if duly packed into the complete original packagin...

Страница 8: ...warrants the hard and software determined by Thorlabs GmbH for this unit to operate fault free provided that they are handled according to our requirements However Thorlabs GmbH does not warrant a fau...

Страница 9: ...ption control of the connection cable to the laser diode interlock Protection against accidental operation Contact protection of the laser diode open circuit Protection against cable damage or bad con...

Страница 10: ...still working faultlessly Action check After power up the combi modules are in LASER OFF mode LabVIEW and LabWindows CVI driver For the TXP series cards Thorlabs supplies LabVIEW and LabWindows CVI d...

Страница 11: ...he modules ITC5xxx the laser diode current in constant current mode the monitor diode current in constant power mode and temperature or thermistor resistance are set with a resolution of 16 bit The li...

Страница 12: ...e window operation Safety functions TEC Compliance voltage warning TEC Current limit Switch off with no sensor Laser Voltage Measurement Measurement Principle 4 Wire Measurement Range 0 4 V Resolution...

Страница 13: ...tion 0 8 Accuracy 10 Stability 60 min 1 Control Loop Digitally controlled analog PID setting resolution 12 Bit Temperature Window Adjustment range 0 01 2 k Internal Modulation Waveform Sine Square Tri...

Страница 14: ...Range 0 200 mA Compliance Voltage 2 5 V Setting Resolution 4 A Accuracy 0 05 100 A Noise 2 A Ripple 0 5 A Transients P 15 A Transients other 200 A Drift 15 sec 1 A Drift 60 min 1 5 A Drift 24 h 2 A T...

Страница 15: ...Range 0 500 mA Compliance Voltage 2 5 V Setting Resolution 8 A Accuracy 0 05 0 25 mA Noise 5 A Ripple 0 5 A Transients P 30 A Transients other 500 A Drift 15 sec 1 A Drift 60 min 2 A Drift 24 h 4 A Te...

Страница 16: ...rrent Range 0 1 A Compliance Voltage 2 5 V Setting Resolution 20 A Accuracy 0 1 1 mA Noise 10 A Ripple 0 5 A Transients P 50 A Transients other 1 mA Drift 15 sec 2 A Drift 60 min 4 A Drift 24 h 8 A Te...

Страница 17: ...he red button of the ejector handle and flip down the black ejector handle This pulls out the card from its internal plug You can now remove the card If you do not insert another card please close the...

Страница 18: ...the TEC element are always sourced relative to ground by the combi module This is of considerable advantage regarding the safety of devices and stability of currents The monitor diode input is a tran...

Страница 19: ...UTEC TEC Voltage measurement 14 TH Thermistor ground 15 TH Thermistor 11 LDA Laser diode anode 3 LGND Laser diode ground 10 LDK Laser diode cathode 2 PD_GND Monitor diode ground Bias ground 4 PD_BIAS...

Страница 20: ...or diode current TEC voltage and laser voltage measurement The shield has to be connected to ground pin 3 If an external monitor diode is used it must be connected by a coaxial cable with the outer co...

Страница 21: ...be connected to the ground conductor of the laser diode pin 3 If this is necessary e g with laser diodes with integrated monitor diode and shared ground connector the ground conductors should be conn...

Страница 22: ...hode Grounded CG Anode grounded AG Anode grounded AG Cathode Grounded CG Monitor Diode without Bias Monitor Diode with Bias 0 4V 0 4V 0 V 0 V Figure 3 Connecting the Monitor Diode Attention Check the...

Страница 23: ...resistance too high the current module cannot be switched on Should the interlock contact open during operation the output will be switched off immediately Status display It is also possible to use a...

Страница 24: ...1 7 Connecting components ITC5000 page 18 1 7 5 Connecting the thermistor The thermistor is connected between pin 14 and pin 15 no polarity is given Figure 4 Connecting the thermistor 15 14...

Страница 25: ...7 6 Connecting the TEC element Connect the TEC element to pins 7 and 6 and the pins 8 and 13 for Figure 5 Connecting the TEC Attention An reverse poled TEC element may lead to thermal runaway and dest...

Страница 26: ...e autorun function is active on your PC the installation program should start automati cally If not start the program TXP Suite exe on the CD The installation wizard leads you through the installation...

Страница 27: ...ick on 1 Start the TXP Explorer and connect to the desired mainframe You will get a system overview of the selected TXP mainframe all TXP Explorer details are explained in the mainframe manual Figure...

Страница 28: ...r the mainframe IP address see Figure 8 If necessary ask your system administrator also enter the port number and a timeout value in the advanced section see Figure 9 Click OK and the program will yie...

Страница 29: ...2 2 The Graphics User Interface GUI ITC5000 page 23 Figure 8 Select the IP Address Figure 9 Select Port number and Timeout...

Страница 30: ...ents you must properly configure your settings Current Limit values Laser diode polarity Operating mode Photodi ode polarity and a possible bias Wrong settings can destroy your Laser Diode 2 2 2 Set l...

Страница 31: ...Do not forget to lock these fields again 2 2 3 Set the Laser and Photodiode polarities and the operating mode In the drop down menu Setup select LD Current Control Select the correct polarity of your...

Страница 32: ...tant Power CP or constant Current CC 2 2 4 Change the temperature control Settings In the drop down menu Setup select Temperature Control Depending on the thermistor used the calibration coefficients...

Страница 33: ...User Interface GUI ITC5000 page 27 Now you are ready to operate your laser diode Enter the desired values for laser current or power and for the operating temperature Then you can switch on the TEC an...

Страница 34: ...ent Limit Lock Display fields for two selectable LD variables Switch Laser Current ON and OFF Switch Modulation ON and OFF Select modulation type Select the monitor current Display and set the desired...

Страница 35: ...s resistance The thermistor resistance The measured TEC current The measured TEC voltage For the Laser Diode The measured Laser Diode current The measured monitor Diode current The calculated optical...

Страница 36: ...real variable the resistance of the thermistor in k 3 1 2 Set the limit values Unlock the two padlocks and enter your absolute limit values for the laser diode current and the TEC current Enter the v...

Страница 37: ...a PID adjustment Pre conditions All limit values have been set correctly all polarities are correct all relevant calibration values are entered Set the display refresh time see 3 2 5 The Preferences m...

Страница 38: ...re after a minimum of overshoots I share Turn on the I share again Again change repeatedly between set temperatures of 18 C and 22 C Increase the I share gradually Higher values will accelerate the se...

Страница 39: ...han 0 1 3 1 5 Switching ON and OFF Pressing the corresponding button will switch ON or OFF either the laser diode current the TEC current or the modulation The writing on the buttons always shows the...

Страница 40: ...st be acknowledged by clicking OK Together with the error message an error number is given Please refer to this error number when consulting the Thorlabs technical hotline Messages in red are more imp...

Страница 41: ...was stored from you will get a warning message or even an error message if the settings are physically impossible for this card Save Setup Save new settings under the filename you have opened before S...

Страница 42: ...the port number and a timeout value under Advanced The timeout value is the wait time after which the program card yields a connection error if the ITC does not respond 3 2 3 The Setup menu LD Curren...

Страница 43: ...ecisely calibrated display of the laser power in the main screen you must set the corresponding photo diode responsivity A W in the corresponding field You can use the up and down arrows or enter the...

Страница 44: ...calibration coefficients are given in exponential form or as Steinhart Hart Parameters Select the corresponding form and enter the calibration coefficients given in the data sheet of the thermistor L...

Страница 45: ...urrent if the temperature leaves this predefined window To enter new settings and activate the window function both laser current and TEC current must be switched off If your temperature setting field...

Страница 46: ...item in this menu is to give you some more detailed information about the corresponding card 3 2 5 The Preferences menu The preferences menu contains one item Communication which allows to define the...

Страница 47: ...3 2 Menu items ITC5000 page 41 Depending on the bandwidth and reliability of your connection between TXP and PC you can select update rates from 10 seconds down to 0 3 s...

Страница 48: ......

Страница 49: ...output power Is the local interlock closed Control the resistance between the interlock pins of the connector jack not to be more than 430 Is the global interlock closed If you do not use the global i...

Страница 50: ...ITC5000 card does not need any service If highest precision of the measurements is vital for you you should have recalibrated the ITC5000 every two years You can see the due date of calibration in the...

Страница 51: ...igital to Analog Converter D Share Differential share IEEE Institute for Electrical and Electronic Engineering I Share Integral share LDC Laser Diode Controller LED Light Emitting Diode PC Personal Co...

Страница 52: ...15 Figure 3 Connecting the Monitor Diode 16 Figure 4 Connecting the thermistor 18 Figure 5 Connecting the TEC 19 Figure 6 The TXP Explorer Window 21 Figure 7 The ITC5000 GUI Surface 22 Figure 8 Selec...

Страница 53: ...oltage Failed Internal error please contact Thorlabs GmbH Global Interlock Open Close the global interlock line or put the short circuit plug on the D SUB jack at the rear panel Local Interlock Open T...

Страница 54: ...nc sales thorlabs com techsupport thorlabs com Europe Thorlabs GmbH europe thorlabs com France Thorlabs SAS sales fr thorlabs com Japan Thorlabs Japan Inc sales thorlabs jp UK and Ireland Thorlabs Ltd...

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