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Centauri User Manual 1

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Centauri User Manual 1 CentauriCentauri High End Laser Power/Energy Meter User Manual Centauri Ophir Optronics Solutions Ltd. Table of Contents 1 Introduction ................................................................................................................... 5 1.1 This Document ............................................................................................................... 5 1.2 Related Documentation ................................................................................................ 5 1.3 Support .......................................................................................................................... 5 2 Quick Reference ............................................................................................................. 6 2.1 Getting Started .............................................................................................................. 6 2.2 Thermal Sensors ............................................................................................................ 7 2.2.1 Using Centauri with Thermal Sensors ................................................................ 7 2.2.2 Using Centauri to Measure Laser Power ........................................................... 7 2.2.3 Using Centauri to Measure Single Shot Energy ................................................. 7 2.3 Photodiode Sensors ....................................................................................................... 8 2.3.1 Using Centauri with Photodiode Sensors .......................................................... 8 2.3.2 Setting the Measurement Parameters .............................................................. 8 2.3.3 Measuring Average Power or Exposure ............................................................ 8 2.3.5 Measuring with Low Frequency Power ............................................................. 9 2.4 Pyroelectric or Photodiode Energy Sensors .................................................................. 9 2.4.1 Using Centauri with Energy Sensors .................................................................. 9 2.4.2 Zeroing the Meter with the Sensor ................................................................... 9 2.4.3 Setting the Measurement Parameters .............................................................. 9 2.4.4 Measuring Energy, Average Power, or Exposure ............................................ 10 2.5 Graphical Displays ....................................................................................................... 11 2.6 Functions ..................................................................................................................... 13 2.7 Logging Measurement Data ........................................................................................ 13 3 Using the Centauri Meter ............................................................................................. 14 3.1 Centauri Meter ............................................................................................................ 14 3.2 Centauri Hardware Components and Interfaces ......................................................... 15 3.2.1 Sensor Input ..................................................................................................... 15 3.2.2 On-Off Switch................................................................................................... 16 3.2.3 Centauri Touchscreen User Interface .............................................................. 18 3.2.4 Charger Input ................................................................................................... 18 3.2.5 Analog Output ................................................................................................. 19 3.2.6 RS232 ............................................................................................................... 21 3.2.7 TTL Output ....................................................................................................... 21 3.2.8 External Trigger ................................................................................................ 23 3.2.9 USB ................................................................................................................... 27 3.2.10 OTG USB ........................................................................................................... 27 3.2.11 USB Flash Drive ................................................................................................ 28 3.2.12 WiFi Antenna Socket ........................................................................................ 28 3.2.13 Ethernet Socket ............................................................................................... 28 3.2.14 Loudspeaker .................................................................................................... 28 3.2.15 Field Upgrade of the Centauri Firmware ......................................................... 29 3.2.16 Calibration Reminders ..................................................................................... 29 3.3 Zero Adjustment .......................................................................................................... 30 3.4 Offset ........................................................................................................................... 31 Centauri User Manual 1 3.4.1 For Thermal and Photodiode Sensors Measuring Power ................................ 31 3.4.2 For Photodiode Sensors Measuring Exposure ................................................. 31 3.4.3 For Thermal Sensors Measuring Single-Shot Energy and for Energy Sensors .......................................................................................................... 32 3.4.4 Measuring Loss Using the dB Offset Function ................................................. 32 3.5 Using the Settings Menu ............................................................................................. 32 3.5.1 Instrument Settings ......................................................................................... 34 3.5.2 User Interface Settings .................................................................................... 36 3.5.3 Instrument I/O Settings ................................................................................... 40 3.5.4 Log Settings ...................................................................................................... 41 3.5.5 Log History ....................................................................................................... 41 3.6 Configuring Measurements ......................................................................................... 42 3.6.1 Configuration Menus within the Measurement Screens ................................ 43 3.7 Using StarLab ............................................................................................................... 45 4 Points to Consider ........................................................................................................ 46 5 Thermal Sensors ........................................................................................................... 47 5.1 Operation of Centauri with Thermal Absorber Sensors .............................................. 48 5.2 Measuring Laser Power with Thermal Sensors ........................................................... 48 5.3 Measuring Laser Energy with Thermal Sensors........................................................... 50 5.3.1 Measuring Pulses of Very Low Energy ............................................................. 52 5.3.2 Measuring Energy of Rapidly Repeating Pulses ............................................... 52 5.4 Measuring Laser Pulsed Power with Thermal Sensors ................................................ 52 5.4.1 Pulsed Power Limitations ................................................................................ 53 6 BeamTrack Sensors ...................................................................................................... 54 6.1 Setting Measurement Parameters .............................................................................. 54 6.2 Tracking Laser Beam Position and Size ........................................................................ 56 6.3 Tracking Stability - Laser Beam Position Over Time .................................................... 57 7 Photodiode Sensors...................................................................................................... 58 7.1 Operation of Centauri with Photodiode Sensors ........................................................ 60 7.2 Measuring Laser Power with Photodiode Sensors ...................................................... 60 7.3 Averaging and Measuring Very Low Power Measurements ....................................... 61 7.4 Measuring Total Exposure ........................................................................................... 62 7.4.1 Exposure Limitations ....................................................................................... 63 7.5 Measuring Average Power of Low Frequency Pulsed Lasers -Low Freq Power Mode 63 7.6 Measuring Laser Modulation – “Fast Power Mode”: .................................................. 65 8 Pyroelectric and Photodiode Energy Sensors ................................................................. 66 8.1 Pyroelectric Sensors – Method of Operation .............................................................. 66 8.2 Photodiode Energy
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