FLIR Alpha Nir User Manual
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FLIR Alpha Nir User Manual

FLIR Alpha Nir User Manual

Digital image acquisition system
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User's Guide
Version 150
412-0007-10
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INDIGO OPERATIONS
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Summary of Contents for FLIR Alpha Nir

  • Page 1 INDIGO OPERATIONS ™ ™ User’s Guide Version 150 412-0007-10...

  • Page 2: Alpha Nir User's Guide 412-0007-10 Ver

    INDIGO OPERATIONS If You Need Help – Technical Support If you need help at any time with the installation or use of the Alpha NIR camera or the IRvista software, please call Technical Support at Indigo Systems Corp. in Goleta, CA.

  • Page 3: Table Of Contents

    Alpha NIR User’s Guide 412-0007-10 Ver 150 INDIGO OPERATIONS Table of Contents INTRODUCTION ................5 VISTA NSTALLATION NSTRUCTIONS NIR H ................8 NSTALLING LPHA ARDWARE NIR S .................10 LPHA YSTEM ARDWARE ETUP ALPHA NIR EXTERNAL SYNC OPERATION ........12 ROCEDURE FOR CTIVATING XTERNAL...

  • Page 4: Cautions And Warnings

    Alpha NIR User’s Guide 412-0007-10 Ver 150 INDIGO OPERATIONS Cautions and Warnings: • The camera is not sealed, so avoid dust and moisture exposure, and replace lens cap when not in use. • Do not exceed 7 volts DC input power, or reverse the polarity of input power.

  • Page 5: Introduction

    • Alpha NIR is not a conventional video camera in and of itself – it does not produce analog video, nor does it have external switches or controls – it is really just a sensor head.

  • Page 6: Irvista Installation Instructions

    30-Hz frame rate that the sensor head is capable of delivering. • Advanced users can design their own interface to Alpha NIR using their own digital frame grabber and camera control software. They need only purchase the sensor head from Indigo Systems Corporation.
  • Page 7 5. Power up the computer. It should show you a message that the IMAQ hardware is initializing. 6. Run the Upgrade to IMAQ 2.5.3 executable on the Alpha NIR Setup CD. The computer will reboot again. 7. Open the folder Disk 2 on the CD and run setup.exe. Use of default settings for installation locations is strongly recommended.
  • Page 8 Alpha NIR User’s Guide 412-0007-10 Ver 150 INDIGO OPERATIONS shine a flashlight or an incandescent (fluorescent lights have low intensity in this waveband) light into the opening. This should result in a change in intensity in the displayed window. You should see something on the screen, albeit a low contrast image.

  • Page 9: Installing Alpha Nir Hardware

    5) NIR Calibration Light Box 6) Internal Filter Holder (see figure 1 on p.14) The Alpha NIR Imaging Kit has been tested and can be expected to work properly on a computer that is configured as follows: • Windows NT 4.0 w/ Service Pack 6 or Windows 2000 Service Pack 2 •...
  • Page 10 NI frame grabber software. (The NI CD included in your shipment is not required) 5) Run the Upgrade to IMAQ 2.5.3 executable on the Alpha NIR Setup CD. The computer will reboot again. 6) Shut down the computer completely.

  • Page 11: Alpha Nir System Hardware Setup

    3. Connect the other end of the interface cable to the Digital Interface Connector on the side of the Alpha NIR sensor head. 4. Insert the power jack of the 6-volt Alpha NIR power supply into the Alpha NIR sensor head’s DC Power Input on the back.
  • Page 12 Alpha NIR User’s Guide 412-0007-10 Ver 150 INDIGO OPERATIONS 6. The sensor head should immediately being streaming images to the computer. 7. Launch the IRvista application by double clicking on the IRvista icon on the host computer’s Desktop. 8. The IRvista window will appear with a corrected live digital video image displayed at about 10 frames per second.

  • Page 13: Alpha Nir External Sync Operation

    2.1 Procedure for Activating External Sync with IRvista 1) Connect the interface cable between the Alpha NIR and the host computer. 2) Connect the Alpha NIR external sync cable to the back of the Alpha NIR sensor head. 3) Connect a pulse generator or other trigger source to the external sync cable. The signal level should be a CMOS level (3.3 volts), with a zero-volt ground level.
  • Page 14 Alpha NIR User’s Guide 412-0007-10 Ver 150 INDIGO OPERATIONS The ext_sync period (time between rising edges) must be greater than 33.47ms (29.87 Hz frame rate max), in both Normal and Short modes. There is no maximum period. Periods less than the specified limit will result in the camera ignoring ext_sync inputs.
  • Page 15 Alpha NIR User’s Guide 412-0007-10 Ver 150 INDIGO OPERATIONS...
  • Page 16 Alpha NIR User’s Guide 412-0007-10 Ver 150 INDIGO OPERATIONS ™ ™...

  • Page 17: Alpha™ Nir Calibration Light Source Nuc Procedure

    3 Alpha™ NIR Calibration Light Source NUC Procedure 3.1 RECOMMENDED EQUIPMENT & SOFTWARE 3.1.1. National Instrument Framer Grabber (P/N 216-0001-03) 3.1.2. IRvista software (321-0028-00) and Indigo Alpha NIR Camera Interface software (110-0064) 3.1.3. 0 to 12V Adjustable DC Power Supply for Light Source. 3.1.4.
  • Page 18 Alpha NIR User’s Guide 412-0007-10 Ver 150 INDIGO OPERATIONS 3.2.9. Open “IRvista” on PC desktop. Go to “Setup” menu, then pull down to “Preferences”. Name the file in the “File path for camera settings” box. Select “Apply and Save Preferences”. Select “Change”.
  • Page 19 Alpha NIR User’s Guide 412-0007-10 Ver 150 INDIGO OPERATIONS 3.2.21. Push the “Select Cur Dir button”. 3.2.22. Note the IRvista histogram mean count value of the pixels in the array with the light off. This “light off” mean count value will typically be around 350- 450 counts at 16 msec, low gain mode with skim enabled.
  • Page 20 Alpha NIR User’s Guide 412-0007-10 Ver 150 INDIGO OPERATIONS 3.2.32. Save in the camera’s folder. “Save”. 3.2.33. Apply now, but don’t change default settings. Push the “GO” button. 3.2.34. Look at the camera’s image with lens on. If the image is good, continue if another NUC is to be made.

  • Page 21: Short Integration Times

    Alpha NIR User’s Guide 412-0007-10 Ver 150 INDIGO OPERATIONS 3.3 Short Integration Times 3.3.1. 25 usec integration times and shorter. *Note: Integration times shorter than 25 usec may need a brighter source. 3.3.2. Set VDetCom to 5.0 VDC for 25 usec Turn skimming on.

  • Page 22: Application Note On Time Stamps In Irvista

    Alpha NIR User’s Guide 412-0007-10 Ver 150 INDIGO OPERATIONS 4 Application Note on Time Stamps in IRvista 2.51 Austin Richards FLIR Systems, Indigo Operations 8-2-04 LabView writes a date/time stamp as a double precision number representing the number of seconds elapsed since 12AM, 1 Jan 1904 (not 1994). This number is in IEEE-754...

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