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Страница 1: ...IP250 BV 250 mA Blue Laser Diode Controller User Guide ...
Страница 2: ...ntrol ACC 3 2 2 2 Automatic Constant Power Control APC 5 2 2 3 Analog Modulation 6 2 2 4 Remote Control Inputs 7 2 3 Alarms and Troubleshooting 7 2 4 Remote Monitoring 8 2 5 Accessories 8 Chapter 3 Specifications 9 Chapter 4 Output Derating Curves 11 Chapter 5 Regulatory 12 5 1 Waste Treatment is Your Own Responsibility 12 5 2 Ecological Background 12 Chapter 6 Thorlabs Worldwide Contacts 13 ...
Страница 3: ... complying with the various laser safety requirements as well as protection circuitry for the laser diode The primary application for this product is to provide a method of precisely controlling a blue or blue violet laser diode at the PCB board level or within the confines of a higher level assembly In all cases the end user must provide DC power and the proper connections between the unit and th...
Страница 4: ...onnect the laser diode as follows Laser Diode Connections Connector Wire Color Designation J2 1 Blue Laser Anode J2 2 Black Laser Cathode Ground J2 3 Black Monitor Photodiode Cathode J2 4 Orange Monitor Photodiode Anode Note Either the monitor photodiode cathode or monitor photodiode anode MUST be connected to ground somewhere in this system Typically this is done at the laser diode package itself...
Страница 5: ...omatic Constant Current Control ACC 1 This board will only work with laser diodes with grounded cathodes 2 Set JMP2 to ACC for Constant Current operation JMP2 is located on the left side of the unit Always disable the laser driver prior to changing modes 3 Refer to output current derating curves in Appendix A before proceeding 4 Apply power to the unit ...
Страница 6: ...LIM set point or 250 mA max When turning on a laser for the first time it is suggested that this pot be set fully counterclockwise 8 Press and release the ENABLE switch 9 The green LD ON indicator will turn on NOTE There will always be a delay until full power of approximately 2 to 3 seconds before any current can flow to the laser diode 10 Adjust the P I ADJ potentiometer clockwise to increase th...
Страница 7: ...t for the maximum MPD current expected The transfer function is 1 V 1 mA with a maximum adjustment of 2 5 V or 2 5 mA 5 The P I ADJ Pot will allow adjustment of the monitor photodiode current from 5 uA to the PLIM set point or 2 mA max When turning on a laser for the first time it is suggested that this pot be set fully counterclockwise 6 Press and release the ENABLE switch 7 The green LD ON indic...
Страница 8: ...nt from 0 to 250 mA by applying a 0 to 10 VDC signal The transfer function being 25 mA per 1 V The P I ADJ pot must be set fully counterclockwise prior to using this input For 100 depth of modulation set the P I ADJ pot fully counterclockwise and apply a sine wave input to J3 The peak to peak amplitude must equal ILIM 0 025 and a DC offset equal to 0 5 of the amplitude must be applied the signal s...
Страница 9: ...und A closed connection across J4 3 to J4 4 will prevent the unit from being ENABLED Leave unconnected when not using Pin Description J4 5 Remote Interlock Input J4 6 Remote Interlock Return common to ground An open connection across J4 5 to J4 6 will prevent the unit from being ENABLED These two points must be connected for unit to operate All connections to J4 must be made using isolated or dry ...
Страница 10: ...y a negative level at the IPD Test point The photodiode is not connected in PMODE operation Identified by 0 V at the IPD Test point The photodiode is short circuited in PMODE operation Identified by 0 V at the IPD Test point The ILIM pot is set full CCW minimal 2 4 Remote Monitoring J5 has been reserved as an I O port for specialized applications incorporating the IP250 BV Refer to the attached en...
Страница 11: ...e Current 5 μA to 2 mA Setting Accuracy 2 μA Drift 30 min 10 Hz 1 μA Limit Adjust Range 0 to 2 5 mA Limit Accuracy 2 μA Analog Modulation Control Voltage Input Resistance 10 kΩ Bandwidth DC to 50 kHz Transfer Function ACC Mode 25 mA V Input Range 0 to 10 V Analog Monitor Outputs Note All outputs are single ended with respect to ground Ilim 0 to 250 mV 0 to 250 mA ILD 0 to 250 mV 0 to 250 mA IPD 0 ...
Страница 12: ...DA J5 5 PLIM Test Point TP J2 3 PD Cathode J5 6 PLIM Adjust J2 4 PD Anode J5 7 Alarm J3 0 10 VDC Modulate In J5 8 PMON Test Point TP J4 1 Enable J5 9 P I Adjust J4 2 Ground J5 10 Enable J4 3 Keylock J5 11 IMON Test Point TP J4 4 Ground J5 12 2 5 Vref J4 5 Inhibit JMP3 1 Ground J4 6 Ground JMP3 2 PD Cathode 0 150 3 81 mm 0 150 3 81 mm 0 150 3 81 mm 0 150 3 81 mm 2 500 63 50 mm 5 000 127 0 mm 1 125 ...
Страница 13: ... powering the unit from a 12 V power supply It is possible to operate with lasers with less than 5 V VOP but the output current must be derated to maintain a safe operating area for the drive transistor To determine the power dissipation of the drive transistor use the following formula ܲ ൌ ܫ ௨௧ ௨௧ሺܸ െ ܸை ሻ Where Vin is the positive input voltage to the driver typically 10 to 12 V VOP is the opera...
Страница 14: ...horlabs products such as Pure OEM products that means assemblies to be built into a unit by the user e g OEM laser driver cards Components Mechanics and optics Left over parts of units disassembled by the user PCB s housings etc If you wish to return a Thorlabs unit for waste recovery please contact Thorlabs or your nearest dealer for further information 5 1 Waste Treatment is Your Own Responsibil...
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Страница 16: ...www thorlabs com ...