CTF Digital Cameras Description and Operation
Contents
1. E 220 se 33 25 ges SF S 873 4 373 3 2 Et 7B 98 34 s e Master canero power ssiton Push to ectivete atch A L thng y enoble CTF Digital Camera Quick Reference Turning on the Cameras 1 2 3 4 Turn Camera Master Power switch on Set serial port switch to desired camera Push the push button switch for the selected camera briefly to turn on that camera Watch Camera Current meter Momentary spikes about 2 amps are normal but if the meter jumps above 2 amps for a moment and does not connect to the computer then the camera was not properly shut down when previously used Turn off camera by pushing the push button switch again for a second or more and then start from step 3 again Camera should connect to computer automatically A connecting to camera status bar should appear on the computer If you do not notice this try to start the Kodak software by double clicking on the DC290 Camera Properties icon The camera selected should appear in the Open Camera menu If it does not appear then the camera has not connected to the computer Make sure that the correct camera is selected on the serial port switch box and start again from step 3 Taking Pictures 1 2 After the computer has connected to the computer and the DC290 Camera Properties icon has been double clicked then an Open Camera menu will appear Select the camera to be opened and click Open The2. file size Downloading very large images can take several minutes This should be kept in mind when taking pictures The only thing that should ever be set in the Camera Setting tab is the Date and Time of the camera which can only be set to the computers time and date We cannot use the video out and time out settings do not need to be changed THE DEFAULT SETTINGS BUTTON MUST NEVER BE PUSHED This will reset the camera to its default settings Some of these settings have been changed on the camera and cannot be changed through the computer On the Picture Capture tab you can take a picture Set the zoom to the desired setting and click on take picture It will take a few moments for the camera to process the picture I do not suggest selecting Preview ON Since we are communicating with the camera through a serial line the date transfer is slow I have noticed a few problems when the preview is on I suggest taking low resolution low quality pictures if a preview is desired before taking a high resolution high quality large file size picture Taking a Picture When all the desired settings are set with the Kodak software you will then be ready to take a picture Push and hold the Push to Activate button on the manual interface box after the needed lights have been selected if lights are needed Then click on the Take Picture button on the Kodak software Release the button when the camera is finished taking the picture in other words
3. DC290 camera control software will now start Important Note NEVER CLICK THE DEFAULTS BUTTON UNDER THE CAMERA SETTINGS TAB Select Flash Off Select Manual Focus and the desired focal distance Select Long time Exposure and the desired exposure time Select the desired White Balance Select the Picture Type tab Select Still picture Select picture quality and resolution needed Click on the Picture Capture tab Select desired Zoom You are now ready to take a picture If lights are needed follow the steps below for Taking Pictures with Lights otherwise click Take Picture Taking Pictures with Lights 1 2 35 Follow steps 1 through 11 above Use key to enable the lights This should only be done if the PMT high voltage is off Select which camera cans you would like light to come from by switching on the desired lights with the toggle switches One should not turn on the lights in the same can as the camera that is taking the picture When ready to take a picture hold down the Push to Activate button while also clicking on the Take Picture button on the DC290 software Release the button when the picture has been taken This depends on the exposure time selected One does not need to wait for the picture to be finished processing Viewing Pictures 1 2 When the picture is finished processing it is ready to be handled Picture can be viewed by any Jpeg viewer I recommend Poly
4. it on again This will set the clock on the camera to 01 01 01 00 00 The clock on the camera can then be set to the computers time using the computer interface This will be described later Humidity Alarm The Humidity Alarm are just LEDs for now When an LED turns on the humidity is higher than the threshold set in the electronics Right now the threshold is set to be about 8596 relative humidity This can easily be changed by adjust the comparison voltage with the potentiometer connected to the voltage comparator The humidity sensor outputs a voltage that is a function of both the supply voltage and the relative humidity The function is in general Vout Vsupply 0 0062 relative humidity 0 16 The specification of each humidity sensor in each can is given at the end of the description and procedure The threshold is controlled using a voltage comparator LM311 Review the schematic of the manual interface box if you would like to change this If the humidity alarm does go off then nitrogen should be flushed through the can There are three valves near the feed through for the camera cables These valves control the gas to the camera cans As of April 5 2001 gas was not connected to these valves but there is a tube provided to do this It is labeled and also near the cable feed through The feed through is on the side of the water tank near the PMT cable feed throughs on to of the tank Computer Interface The computer interf
5. CTF Digital Cameras Description and Operation Henning Back Virginia Tech Blacksburg VA Introduction The cameras in CTF are regular consumer grade Kodak DC290 Digital Zoom camera equipped with an optional wide angle lens They can take still images at various resolutions and image compressions Lights humidity sensor and a gas tube are also part of the complete camera system Both a manual interface and a computer interface control them These are located in the first room of the cleanroom on top of the CTF water tank The interfaces will be described below as well as the camera features Each camera is mounted in a stainless steel can with a 1 inch 25 4 mm flat acrylic window Also in the can is a humidity sensor to measure when the humidity gets too high To expel this humidity there is a small plastic tube that runs in to the can Nitrogen can then be flushed through the can and expelled to Hall C There are two of these cans mounted on the vertical ribs of the open structure between rings 5 and 6 cameras 2 and 3 and one mounted high on the side of the water tank between ring 2 and 3 camera 1 Manual Interface The manual interface controls the power to the camera and lights and also has the switches for turning them on and off There are also LED indicators that signal when the humidity is too high The diagram below shows the lay out of the manual interface Humidity O e C Camera ON Camera Current Em M dii Cameral Came
6. View The picture is stored on the camera picture disk The camera is viewed by the computer as another drive so pictures can be opened directly from the camera If you want to keep the picture then transfer it to a disk or to the network Delete any unwanted pictures from the Camera picture disk
7. ace is a Windows PC equipped with Kodak software for controlling the camera and PolyView for viewing the picture Both have shortcuts on the desktop After the camera is turned on and the serial port switch box is turn to the correct camera the camera will automatically connect to the computer The camera will now be seen as another drive on the computer This make file transfer easy cut and paste The Kodak software is called DC290 Camera Properties When it is opened it will ask which camera to connect to Since the cameras are on a serial port switch box and not all connected to the computer there will only be one camera to choose When this is chosen the Camera Properties interface will open A list of what the Camera Properties controls is below but this is unfortunately not all the camera properties Some of them can only be changed on the camera These have been preset before installation and there is no reason to change them List of camera properties controlled by Kodak software Capture Settings tab Self timer Flash Advanced Focus Mode Advanced Exposure Mode White Balance Picture Type tab Picture Type Picture Quality Resolution Camera Settings tab Camera Date and Time Time Out Settings Video Out Format Default Settings Picture Capture tab Preview On Take Picture Zoom Some of these properties can only be set to a particular setting because the environment they a
8. as are not designed to be turned on and off remotely therefore we have hard wired the switch The Master Power switch supplies power to the camera but to turn them on or off one must push the push button switches The camera on off switch is push once briefly to turn it on and pushed again for a second or more to turn it off The Camera Current meter measures the current that all the cameras draw This tells you if the cameras are on or not It is suggested that only the camera being used be on In the future if all the cameras can be connected to the computer at the same time then they can all be on but there may be troubles connecting to the computer since a switch box is used at the moment The master power should not be turned off unless all the cameras are off Turning the master power off when a camera is on causes the cameras internal clock to be reset When this happens the next time the camera is turned on it will ask for the date and time It does this by turning on the LCD screen on back of the camera Since the camera is inaccessible one cannot set the clock this way If this does happen you will notice that on the current meter the camera draws more than 2 amps for about a second or so because the LCD screen draws much more current than the camera in normal operation A small spike above 2 amps is normal The camera also will not connect to the computer To fix this one must once again turn off the camera wait a few moments and then turn
9. as long as you have set the long time exposure to After the camera has processed the picture it will show in the preview screen in the Picture Capture tab The picture is now ready to be viewed or downloaded on the hard drive or on to the network if needed Please do not leave pictures on the camera The memory card on the camera has limit space If you find that the camera does not have any room on the memory card then delete some or all of the pictures on the camera The Kodak DC290 User s Manual should be kept with the control system in the CTF cleanroom on top of the water tank Review this manual to understand all the capabilities of the DC290 I have only described them briefly There is also more information available on the Web The address is http www kodak com global en service digCam dc290 dc290 shtml The DC290 computer software also has a help menu for further information I also suggest reviewing this You can also contact Henning Back for any questions or comments Henning Back Virginia Tech Physics Department 540 231 3078 hback vt edu Humidity sensor information The humidity sensors came with calibration data An exact duplicate of this calibration data is below Model IH 3605A Wafer thunderl HYCAL Sensing Products Honeywell Inc 24B Concord Street El Paso TX 79906 Calculated values at 5V Vout 9096 20 790 975 396 3 188 Model IH 3605A Wafer thunderl HYCAL Sensing Products Honeywell In
10. c 24B Concord Street El Paso TX 79906 Calculated values at 5V Vout 0 20 787 75 396 3 188 Model IH 3605A Wafer thunderl HYCAL Sensing Products Honeywell Inc 24B Concord Street El Paso TX 79906 Calculated values at 5V Vout 9096 20 786 975 396 3 188 Camera 1 Channel 117 MRP thunderl File 00090115 3 5 VOLTS PRECISION SUPPLY 2 E SIGNAL OUTPUT 1 NEGATIVE or POWER COMMON Linear output for 2 RH accy 25C Zero offset 2 0 790V Slope 31 852 mV RH RH Vout 0 790 0 0319 Ratiometric response for 0 to 100 RH Vout Vsupply 0 1579 to 0 7949 Camera 2 Channel 101 MRP thunderl File 00090115 3 5 VOLTS PRECISION SUPPLY 2 E SIGNAL OUTPUT 1 NEGATIVE or POWER COMMON Linear output for 2 RH accy 25C Zero offset 2 0 787V Slope 31 887 mV RH RH Vout 0 787 0 0319 Ratiometric response for 0 to 100 RH Vout Vsupply 0 1574 to 0 7952 Camera 3 Channel 100 MRP thunderl File 00090115 3 5 VOLTS PRECISION SUPPLY 2 E SIGNAL OUTPUT 1 NEGATIVE or POWER COMMON Linear output for 2 RH accy 25C Zero offset 2 0 786V Slope 31 906 mV RH RH Vout 0 786 0 0319 Ratiometric response for 0 to 100 RH Vout Vsupply 0 1571 to 0 7952 Manual Interface Schematic Camera from to from tO from to power Camera Computer Camera Computer Camera Computer ppg DB9 DBo DBM CDBY Light Output oc an A eee pr d
11. ra2 Camera 3 a C Power w Camera 1 ON ON ON dili dfi ie Cameral Camera2 Camera 3 C Push to Activate OC C O Camera 2 OFF ON Lighting Enable Push Button once to power up camera C Push Button once again to power down Camera 3 Lighting The Lighting Enable switch controls the power to the lights This switch is a key switch so that the lights cannot be turned on when the PMT high voltage is on This switch however does not turn the lights on It only provides the power to do so In other words it enables the lighting system for use The toggle switches above the Lighting Enable switch let you decide which cans you would like lights to turn on in To actually turn on the lights one must push and hold down the Push to Activate push button switch The lights get hot and to avoid damaging the acrylic by leaving the lights on the lights are only active while the Push to Activate button switch is depressed When this switch is pushed LEDs above the toggle switches will illuminate This tells you that the lights are on If this LED is not illuminated then either it is burned out or both lights in the can are burned out Taking pictures with the lights on in the same can as the camera taking the picture is not advised The lights reflect off the window and will not produce a good image You may try if you like but I suggest using the lights in the two other cans where you are not taking pictures from Cameras The camer
12. re being used in is not where they were intended to be used There is no reason to use the Self timer Leave the self timer off The Flash should always be off as well It is blacked out and blocked so it will not help take picture If the camera is being used for calibration purposes or for any purpose where the PMT high voltage is on then the flash should absolutely not be used Because the optics have changed and the infrared LED that is used to measure the distance is blocked Manual Focus should be chosen and a desired focal distance should be set The Long time exposure should also be chosen because the light levels are so low The exposure time should be set so to optimize the image PolyView is also capable of changing the Brightness of the picture and the RGB values The White Balance can also be set to a desired position to get desired affect Picture type should always be set to Still If a Burst or Time Lapse picture is what you would like I ask that you read the software help and the DC290 User s Guide to make should you understand what to do Picture Quality sets the type of Jpeg compression There are three Jpeg compressions and an uncompressed image type There are also four types of resolution 720x480 1440x960 1792x1200 and 2240x1500 The last one is called ultra resolution This is an interpolated resolution so an uncompressed picture quality cannot be used The Picture Quality and Resolution affect not only the image but also the
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