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Pyrocam III

HR

 User Guide 

Document No. 50361-001 

Rev E 

7/18/2017 

Page 13 

Software Bad Pixel Correction  

Enable/Disable  the  bad  pixel  correction  simulation  built  into  the  BeamGage  software. 
This allows the operator to preview the effect of the current BP 

List

 before writing it into 

the Pyrocam’s EEPROM. 

Bad Pixel Correction Map  

Toggle control to show/hide the marked pixels currently entered in the correction 

List

.  

Pixel Selection Type  

Select  either  a  single  pixel,  row  of  pixels,  or  column  of  pixels  when  adding/removing 
pixels from the correction 

List

. 

 

Pixel List 

You  can  view  and  select  a  pixel  to  edit  in  the  pixel 

List

  using  this 

dropdown control. It contains all pixel coordinates currently entered in the 

List. 

 Gain Correction 

Click  this  control  to  enable/disable  gain  correction  in  the  Pyrocam.  Gain  Correction  (GC)  will 
default  to  the  ON  state  whenever  a  GC  table  is  loaded  into  the  Pyrocam.  If  this  control  is 
deactivated, it indicates that the Pyrocam does not have a gain correction table programmed in 
its EEPROM. The procedure for creating a Gain Table is described in APPENDIX D. 

Note:

 The Pyrocam has separate gain correction tables programmable for pulsed and chopped 

operation.  Many  of  the  Pyrocams  will  ship  with  a  valid  50Hz  chopped  gain  correction 
table  installed  at  the  factory.  Pyrocams  will  almost  never  ship  with  a  pulsed  gain 
correction table. Factory generated GC files are supplied with the Pyrocam in case the 
programmed table is accidentally deleted or corrupted. 

Click on the expansion button to enter the Gain Correction Dialog. In order to use the automatic 
GC creation method, a uniform collimated illumination must be applied over the entire imager. 
Clicking on the 

Create

 

Gain

 

Table

 button will then compute a normalization factor for each 

pixel. To GC a single pixel, a manual method is provided for setting the correction factor of only 
one pixel at a time. 

 

Содержание Pyrocam IIIHR

Страница 1: ...Page 1 Pyrocam IIIHR User Guide For Sales Service or Technical Support Phone 435 753 3729 Fax 435 753 5231 Service Email service us ophiropt com Sales Email sales us ophiropt com Ophir Spiricon LLC 3...

Страница 2: ...cel Visual Studio and XPS are registered trademarks of Microsoft Corporation LabVIEW and NI IMAQdx are registered trademarks of National Instruments Corporation 2015 2017 Ophir Spiricon LLC All Rights...

Страница 3: ...System Installation 8 2 1 1 BeamGage Setup 8 2 1 2 Connections 8 2 1 3 Driver Installation 9 CHAPTER 3 SETUP AND OPERATION 10 3 1 Introduction 10 3 2 Overview of Pyrocam Controls 10 3 3 Pulsed Operati...

Страница 4: ...ocam IIIHR Specifications 27 Pyrocam Dimensions 29 APPENDIX B PROTECTIVE BEZEL REMOVAL AND WINDOW INSTALLATION 31 APPENDIX C BAD PIXEL CORRECTION 34 Bad Pixel Correction Overview 34 Bad Pixel Correcti...

Страница 5: ...is also compatible with National Instruments Vision Image Acquisition Software and any GenICam standard client CHAPTER 4 1 2 Models Spiricon offers the Pyrocam IIIHR in the following models all of whi...

Страница 6: ...the optional bad pixel correction procedure Appendix D explains the optional gain correction procedure Appendix E contains a complete list of all Pyrocam models and accessories and Appendix F contain...

Страница 7: ...r source that applies less than 240 Volts AC 50 60Hz between the supply terminals The supply output is a regulated 12Vdc that presents no electrical shock hazard The power supply has no user serviceab...

Страница 8: ...with an electronic User Guide in multiple languages BeamGage also has a What s This help feature that can be used to quickly discover what the various controls do and how to manage the display featur...

Страница 9: ...nnect the trigger source to this SMA connector An SMA to BNC adapter cable is supplied A TTL trigger pulse can trigger the Pyrocam The trigger is rising edge sensitive 2 1 3 Driver Installation The eB...

Страница 10: ...only be used in combination with higher gain and frame averaging to extract the very weakest of images When operating in pulsed mode the Pyrocam must be externally triggered The Delay setting should...

Страница 11: ...programmed for pulsed and chopped operation Two BP maps are created at the factory and are flashed into the Pyrocam s EEPROM memory The factory BP maps are also supplied as two files that can be reloa...

Страница 12: ...icate the pixel coordinate of the currently selected pixel location The Manual mode is used to select dark dim or bright pixels one at a time The Peak mode is used to find pixels that indicate too bri...

Страница 13: ...state whenever a GC table is loaded into the Pyrocam If this control is deactivated it indicates that the Pyrocam does not have a gain correction table programmed in its EEPROM The procedure for crea...

Страница 14: ...pplies to both manually entered and automatically calculated factors Since bad pixels cannot normally be corrected within this range it is necessary to map the bad pixels before attempting to run the...

Страница 15: ...he laser fires at a stable periodic rate of 3Hz to 125Hz Mode 2 can also be used to split out a single pulse from a periodic burst of laser pulses When the trigger frequency exceeds 125Hz the Pyrocam...

Страница 16: ...riptions 3 3 2 1 Trigger Rate Stability Trigger rate stability is required for pulsed modes 2 and 3 For best results the trigger pulse repetition rate should be stable to within 200 s The Pyrocam will...

Страница 17: ...If the trigger source is unstable or turns on and off some loss of uniformity shot to shot will likely result For best operation calibrate the Pyrocam at the trigger rate being used and recalibrate i...

Страница 18: ...so be patient Figure 3 2 Mode 2 Periodic 8 705 1 20 for 100 1 15 for 100 3 3 5 Mode 2 Periodic Burst Operation The Delay timer can be used to capture split out a single laser pulse from a burst of pu...

Страница 19: ...WARNING Special care should be exercised when operating at high speed pulsed rates to avoid damage to the Pyrocam s detector High pulse rates with large ON time duty cycles can cause a significant amo...

Страница 20: ...e rate output from the Pyrocam is limited by equipment bandwidths that are not accurately predictable Figure 3 4 Mode 3 High Speed 8 705 1 Use Mode 2 Periodic timing Example Laser pulse rate is 350Hz...

Страница 21: ...of the camera s movement This deflection can bring the rotating blade into contact with the position encoder and or the imager s protective bezel risking costly damage to the chopper and the imager s...

Страница 22: ...f time the detector will sustain damage in and around the region of peak power density Pyrocam detectors are very costly to replace but if treated with care they can last nearly as long as most other...

Страница 23: ...o wait approximately 30 minutes after powering up the Pyrocam so that it reaches thermal equilibrium If a warm up period is not possible the Ultracal cycle should be rerun every 5 minutes or so during...

Страница 24: ...id calibration cycle has been performed and is in effect the status indicator will appear GREEN As long as you do not disturb the Pyrocam set up or trigger timing the indicator will remain GREEN A RED...

Страница 25: ...cquisition Software National Instruments Vision Acquisition Software 778413 35 can be used alone or with LabVIEW to control and capture images from the Pyrocam Follow these steps to capture images and...

Страница 26: ...vi Grab vi Sequence vi Snap vi Low Level Grab Async vi Low Level Grab Raw Data vi Low Level Grab vi Low Level SDequence vi Low Level Snap vi The following examples do not work as is with the Pyrocam...

Страница 27: ...T Pyrocam w o power supply 0 85kg 1 88 lbs DIMENSIONS See page 30 GENERAL Wavelength range 157nm to 355nm 1 06 m to 1000 m Detector Array Details Elements 25 600 160 x 160 Active Area 12 8mm x 12 8mm...

Страница 28: ...d averaging 25 frames to 1Hz Saturation Power 3 0 W cm2 25Hz 4 5 W cm2 50Hz Damage Threshold Power Over entire array 2 W Peak Power Density 8 W cm2 Chopped mode 4 W cm CW in Pulsed mode PULSED OPERATI...

Страница 29: ...Pyrocam IIIHR User Guide Document No 50361 001 Rev E 7 18 2017 Page 29 Pyrocam Dimensions w o chopper or cables...

Страница 30: ...Pyrocam IIIHR User Guide Document No 50361 001 Rev E 7 18 2017 Page 30 Figure A 1 Trigger Input Circuit...

Страница 31: ...or particles getting inside the package or by ESD Installation of a window can cause its own problems if not properly done The clearance between the chopper blade and the window is very small If the r...

Страница 32: ...t CAUTION Do not bend or twist the chopper blade A bent or twisted blade can cause significant damage to the window the array the blade itself and various other components Figure B 2 Remove Chopper Bl...

Страница 33: ...Use great care to ensure that the bezel does not slip or detach prematurely If it contacts the detector damage is very likely to occur STEP 4 Carefully lift off the window bezel assembly Be extremely...

Страница 34: ...pixels can occur singly or they can occur in groups often referred to as clusters Bad pixels are most successfully repaired when they have a number of good neighbors where a neighbor is any adjacent...

Страница 35: ...l appear in the 2D BeamGage display window Note that a description of the Bad Pixel Correction tools is described in section 3 2 Step by Step STEP 1 Click Start in BeamGage to collect live frames of d...

Страница 36: ...bad pixel map to the Pyrocam Flash memory click on the Write Pixel List button The mouse pointer will become an hourglass while the new map is programmed into the Pyrocam When it returns to an arrow...

Страница 37: ...OTE The relationship between bad pixel correction and gain correction is important to understand Bad pixel correction is usually turned on Bad pixel correction has a lesser impact on overall camera th...

Страница 38: ...e with the gain set to a low setting Don t forget to Calibrate Ultracal the Pyrocam Open Utilities With the Pyrocam operating as described above click on the Gain Correction expansion button to access...

Страница 39: ...completed STEP 5 To save the new gain correction table to a file highly recommended enter a file name in the Save and Load section and click the Save button A standard file naming window will appear M...

Страница 40: ...Y III HR W GE 3 5 5 Pyrocam IIIHR window assembly Ge A R coated for 3 to 5 5 m SP90369 PY III HR W GE 10 6 Pyrocam IIIHR window assembly Ge A R coated for 10 6 m SP90370 PY III HR W GE 8 12 Pyrocam II...

Страница 41: ...ID RO Device identifier serial number string 16 DeviceScanType RO Scan type of the sensor enum Linescan DeviceReset WO Resets the device to its power up state command ImageFormatControl Width RO Width...

Страница 42: ...PreTrigger RW Start array scan PreTrigger microseconds before negative or after positive the incoming trigger uint 3000 to 3000 ChopperSpeed RW Selects the internal chopper speed enum ChopperSpeed50 B...

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