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Summary of Contents for PICOLAS LDP-V 03-100 V4.0
- Page 1 User Manual LDP-V 03-100 V4.0 PicoLAS GmbH Burgstr. 2 52146 Würselen Germany Phone: +49 (0) 2405-64594-60 Fax: +49 (0) 2405-64594-61 E-mail: info@picolas.de Web: www.picolas.de Rev. 1910...
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Page 2: Table Of Contents
Table of Contents Product Overview ............Fehler! Textmarke nicht definiert. Important Information ......................4 How to get started........................5 How to connect the LDP-V 03-100..................6 Operating Range Diagram ..................... 7 Maximum Duty Cycle vs. Output Current ................8 Current Droop vs. Pulse Duration ..................8 Typical Performance of the LDP-V.................. -
Page 4: Important Information
Important Information With respect to version 4.0, we performed the following changes compared with the versions 3.3 or older: 1) There is no option to provide an external HV-DC voltage to the board. Pin 2 of the main pin header is out of function. Please use the internal HV; it is powerful enough for all parameters. -
Page 5: How To Get Started
How to get started Step What to do Check Unpack your device. Make a short at the output. Turn the high voltage to the lowest value (turn poti fully counterclockwise). Connect a pulse source with the desired E.g. 100 ns, 100 Hz reprate. pulse width to the selected triggering input. -
Page 6: How To Connect The Ldp-V 03-100
How to connect the LDP-V 03-100 Rogowski coil Poti to adjust value of HV-DC Pin 10 Laser diode Pin header connection Pin 2 Trigger input SMC Current monitor output into 50 Ohm Connections via Pin header: Name Description Ground return Currently not Do not use used... -
Page 7: Operating Range Diagram
Laser Diode Connection: The laser diode can either be connected via the mounting holes on the top side of the pulser (inner hole: anode, outer hole: cathode) or at the rectangular pads on top (anode) and bottom (cathode) of the pulser. Security Advice: Do not touch any leads of the output or the output capacitors as they are connected to a high voltage of up to 100 V. -
Page 8: Maximum Duty Cycle Vs. Output Current
Maximum Duty Cycle vs. Output Current The following tables show the maximum allowable duty cycle depending on a given output current. With active cooling of the baseplate: Output current Typical high External displayed Max. duty cycle in A voltage in V HV in V with int. -
Page 9: Internal Structure Of The Ldp-V
Internal Structure of the LDP-V The LDP-V series generates the pulses by a simple but efficient principle. First, the storage capacitors (C ) are charged, whether through the internal HV-DC supply or an external high voltage source. When a pulse is applied at the trigger input, the high speed mosfet opens and the current flows from the capacitor through the laser diode, mosfet and current sense resistors. -
Page 10: How To Use The Internal Hv-Dc Supply
Direct connection without any kind of wires to the module is absolutely necessary for best results. For detailed information about the effect of the laser diode connection on the pulse shape please refer to PicoLAS Application Notes “Impedance of Diodes” and “LD-Connections”. -
Page 11: Trigger Output Monitor
1 ns .. 10 µs puls 4,5 .. 5,2 V 0 .. 0,2 V Time Τ Τ < 200 ps Trigger signal demands Notes : Exceeding 0.2 V during pulse pause will cause a non proper turning off and thermal damage. If the trigger altitude is below 4.5 V the device will not turn on properly and can not carry the full current. -
Page 12: Absolute Maximum Ratings
Absolute maximum Ratings Supply voltage range: 12 .. 26 V Max. output current U-monitor, NTC: 1 mA Input voltage range Disable_Poti: 0 .. 5 V Input voltage range trigger input, disable: 0 .. 15 V Security Advice : Do not touch any leads of the output or the output capacitors as they are connected to a high voltage of up to 80 V.
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