User Manual for Digital Colour Analyzer
Contents
1. of the LED Analyzer Board e Start Test Button Software performs a measurement with the actual configuration Allows the selection of the connected boards e Select Board Allows the selection of a determined sensor on the LED Analyzer Board Depending on the application different test modes are available The Manual Capture mode allows to select predefined exposure times and sensor surfaces through the sensor range menu The right choice of the exposure time depends on the light intensity of the test object The User Capture mode enables the user to specify exposure time and sensor surface through the sensor configuration individual The software allows exposure times from 1 ms 1000 ms The PVM Capture mode is predestinated to define the colour values of pulsed LEDs In this procedure this mode transfers the settings of the sensor regarding exposure time and sensor surface of the last performed measurement By selecting the average factor which appears after choosing the PVM mode the user defines the number of measurements which have to be done As soon as the LED Analyzer captures the LED in the ON state during the automatically performed measurements the colour parameters are stored and are shown to the user after the complete measurement process is done The yellow marked information window informs about the used LED Analyzer Board firmware and the number of the connected boards It also informs about eventually appe2. in The PopUp menu Communication In the next step you open Measurement settings under the PopUp Menu Test After opening all sensors which are on the board and their setting parameters are shown Now chose through double click on the line the wanted sensor to change the settings Then the menu display Settings for sensor appears see figure below To set an offset for the chromaticity coordinates xandy it has to be guaranteed that the ticker in the control box Don t change x y offset is removed After setting the wanted offsets close the Settings for sensor display through the OK button GPS LED Analyser X File View Communication Test Stability Analysis Terminal Mode Help GPS Digital Color Analyser GPS Pr ftechnik GmbH Tel 08141 52747 0 Communication p Test A EE XY Chart List of settings Settings for sensor Test Modes Measure Time Range Usertime ms Gain X Offset Y Offset Distance Deviation for intensity Deviation forCIE XY value lv o 100 absolute Iv o 100 Iw Don t change XY offset Change all settings Change settings Save settings Load settings OK Figure 13 Settings 22 04 2015 12 Gr PRUFTECHNIK 3 3 Manual for the GPS LED Analyzer Software 3 3 1 The main screen of the LED Analyzer Software with PopUp menus After starting the LED Analyzer Software the main screen appears see figure below Through this main scree
3. 495 0 6461 0 3436 Output format 22 04 2015 23 Gr PRUFTECHNIK 4 10 Get stored Colour Temperature Value in Kelvin getctemp b get Colour Temperature Value XXXXX X Getctemp 1 00000 0 no calculation in Kelvin possible channel no 05678 9 1 5 b b value see getrgbi or 1 495 4 11 Get the Value for Intensity getintensity b Get value for intensity getintensity1 00000 under range 99999 over range channel no 1 5 b b Values see getrgb or 1 495 Output format 4 12 Get the Intensity Gain Factor getintgain b Get intensity gain factor getintgain1 Norm 100 channel no b Values see getrgb 1 55 or 1 495 Output format 4 13 Get ranges of the intensity for all fibers getranges b Get ranges of the intensity for all m f m f m f m f m f getranges 2 See capturexyz b fibers of one board from board 2 m capture time 0 8 f sensor range 0 1 0 3x3 or 1 9x9 2 0 2 0 3 1 1 0 6 1 b board 4 14 Get the User Time getusertime b Get usertime XXXXX getusertime time ms b board from board 1 if specified otherwise board1 01000 22 04 2015 24 Gr PRUFTECHNIK 4 15 Set the X Chromaticity Offset setxoffset 0 xxx set x chromaticity offset setxoffset1 0 050 fiber 1 x offset to fiberno 1 5 b OK 0 050 or 1 495 sensor xxx value b board 4 16 Set the Y Chromaticity Offset setyoffset 0 xxx set Y chroma
4. each hole only once in order to guarantee a clean cut of the fiber 22 04 2015 gt Gr PRUFTECHNIK 2 Interface and Power Wiring 2 1 Mounting a stand alone unit for USB Interface The Digital Colour Analyzer can be operated by RS 232 as well as by an USB Interface During RS 232 operating a voltage of 7 15V 80mA has to be applied additionally end Tx 2 RX 2 Figure 9 Physical Layout RS 232 Connect Female 2 Pin 23 Rx 2 RS 232 Kabel Pin 2 Tx2 yellow mark Pin 24 Tx 2 Pin 3 Rx 2 Pin 25 26 GND Pin 5 GND Female 2 Pin 23 24 Jumper if using several boards the jumper has to be set only at the last board Supply Voltage Setting Jumper Female 2 Pin 1 2 U In 7 15V Pin 5 6 GND BR1 Pin 2 3 Jumper RS 232 cable can be ordered from GPS 22 04 2015 DEA PR FTECHNIK 2 Interface and Power Wiring 2 2 Mounting a stand alone unit for RS 232 Interface The Digital Colour Analyzer can be operated by RS 232 as well as by an USB Interface During USB operating the power supply for the board takes place through the USB Interface cng HM Data Data GND Figure 9 Physical Layout USB Connect USB Cable Connector BU2 Pin 29 5V USB Female Pin1 yellow mark USB Connector Pin 1 5V Pin 30 Pin2 Pin 31 Data Pin3 Data Pin 2 Data Pin 32 Data Pin4 Data Pin 3 Data Pin 33 GND Pin5 GND Pin 4 GND Pin 34 Pin6 BR1 Pin 1 2 Jumper USB cable can be or
5. file Test Moc Storage CONNECTED Dansar B Se d e file ETSI z Path ant e of test r t fle ae ath and name of test repor C LEDAnalyser 2001 Result Result txt Change Select path and name of test report file Path of sensor settings file C LEDAnalyser 2001 Settings Change CIE Chromaticty diagrams CIE 1931 2 HAT 2Z degree Cheever Deviation for intensity w 0 100 absolute Sensorvalues Test Results Red Im D 200 Hue RED Deviation for XY value jw 0 100 absolute Green turation 10 0 02 GREEN W Don t allow any changes to the XY offset values BLUE cna INTENSITY Blue i ensity Color temperature Figure 11 Settings The Digital Colour Analyzer Test Program is a graphical tool that can be used to send commands and receive results from the Analyzer One LED can be tested at a time The results are stored in a data e g TestReport txt This program allows to determine the correct setting for the LED which has to be tested For further details please refer to chapter 3 3 3 Alternately a customised program may be generated that sends commands and receives data through the virtual USB Com Port or RS 232 interface 22 04 2015 10 Gr PRUFTECHNIK 3 1 The Digital Colour Sensor To enable a measurement over a wide range of illuminance the photodiode sensitivity can be selected by modes high sensitivity mode and low sensitivity mode The photodiode active area whi
6. IG yvlu08 Inoge ndui amod AG 0 AZ palelado sq ues pue pun Ajddns amod UMO UE sey pIEOQq Use a eyon Ajddns iedunr O0z6LUld ZSIEWS Jedwnr Dumes pleoq se interconnected units for RS 232 O oO 58 O o CO c _ O O Q Oc AO o co GOL ul IE ZX pz Uld SZ CIND 92 SZ Uld Z X EZ Uld ix PL OZ Uld A 552 ANDZZ LZ Uld p XY GL ud z jew 4 B z 2 3 gt E eng ejeg O ma nS w c O e Sza ONS GUld GND 9Z SZ Uld E s 232 ZXY EU ZX pz Uld Al 08 yewmolei ZXL ZUld age ZEZ SU z XY EC ud zelewed al ELD JOOUUOD ZEZ SU Figure 10b Connecting Diagram 22 04 2015 Gr PRUFTECHNIK 3 Setting the Digital Colour Analyzer After the software has been installed and the Digital Colour Analyzer has been attached the following settings have to be respected Configuration Interface The USB Port is configured as a virtual Com Port and will be designated a name such as Com5 Comp etc The Baud Rate can be changed to any between 9600 and 115200 Set the serial port to Auto and the baud rate to 115200 GPS LED Analyser es pile View Communication Test Lonfiguration GPS Digital Cold mert bH Tel 08141 52747 0 Serial port COM Baudrate 1115200 Select Bo Logfile CJE 1937 E gt romalcity Wiagram Communication Test Config lame of LOG file Analyser Evel of LOG file DISCONNECT Select LE Name of LOG file Analyser log Level of LOG file p Create serial debug
7. User Manual for Digital Colour Analyzer GP add osha GPS Prueftechnik GmbH www gps prueftechnik de E Mail info gps prueftechnik de 22 04 2015 1 E PR FTECHNIK Table of contents 1 LED Digital Colour Analyzer 1 1 Mounting the Digital Colour Analyzer 1 2 Mounting the fiber optic 1 3 Cutting the fiber 2 Interface and Power Wiring 2 1 Mounting a stand alone unit 2 2 Mounting connected units 2 3 Mounting interconnected units for USB 2 4 Mounting interconnected units for RS 232 3 Setting the Digital Colour Analyzer 3 1 The Digital Colour Sensor 3 2 Setting an offset to calculate the components of the standard colour values x and y 3 3 Manual for the GPS LED Analyzer Software 3 3 1 The main screen of the LED Analyzer Software with PopUp menus 3 3 2 Configuration of the LED Analyzer 3 3 3 To perform a measurement by using the functional elements of the main screen 3 3 4 To perform a measurement and compare several LEDs by using Measurement Window and Settings Window 3 3 5 How to use Terminal Modes 4 List of Commands for the LED Analyzer 22 04 2015 Grd PRUFTECHNIK 1 LED Digital Colour Analyzer The construction of the fixture is one of the most critical aspects of a successful implementation of the Digital Colour Analyzer If this step is implemented properly the resulting tests will be more stable and repeatable with low risk of false failures Figure 1 GPS Digit
8. al Colour Analyzer 1 1 Mounting the Digital Colour Analyzer The LED Analyzer can be mounted on the top as well as on the bottom side of the fixture When mounting the LED Analyzer be careful that the fibers can move freely and are not exposed to sharp bends The minimum bend radius is 15 mm Sharper bends can cause a loss of light which can affect the measurements In order to get a clean measurement it must be guaranteed that all light from the LEDs can travel through the fiber to the sensor on the board E Sens4 E Sens5 i 0 no fa 57 ABS DI IGR oo Ano _ 000 pn lo Figure 2 Mounting measurements The mounting holes will accept M3 screws Take care that the mounting holes are connected to the unit ground 22 04 2015 PR FTECHNIK 1 2 Mounting the fiber optic Construction of the fixture is one of the most critical aspects of a successful implementation of a LED Colour Analyzer If this step is implemented properly the resulting tests will be more stable and repeatable with a low risk of false measurements Some important characteristics of the fiber are Minimum bend radius 10mm Operating temperature range 40 to 70 C Numerical aperture 0 5 Angle of incidence ca 60 degrees Attenuation at 650 nm 0 18 dB m ca 2 m Figure 3 Plastic Fiber Fiber LED Figure 4 Positioning the Fiber The fiber must be located over optical centre of the LED For further
9. are has to be rebooted to take over the delivery status 3 3 5 Using the Terminal mode The GPS LED Analyzer Software offers the user a terminal mode in addition With the help of this terminal mode the user can familiarize with the commands in chapter 4 to integrate the LED Analyzer in an existing system see figure Terminal Mode Commands to send getcolor5 LED Analyser response 013031056 050 050 000 COM port COM7 with 115200 baud is activ Clear list Figure 14 9 Terminal Mode 22 04 2015 19 Gr PRUFTECHNIK 4 Capture Commands for the LED Analyzer 4 1 Connection Test Connection test OK oder xOK testcon 2 OK x number of boards Description This command tests the connection between the test system PC and the Analyzer If only one board is connected to the tester and the connection works the Analyzer will transmit the character OK If several boards are connected the number of the boards is transmitted like 2 OK Important This command has to be sent as first command so that all connected boards will be recogniced 4 2 Standard Capture Captures and stores the colour and Intensity of the LEDs capture Start Capture Colour Saturation Intensity capture OK Capture all boards and sensors with the current set up Description This command instructs the LED Analyzer to capture and store the colour and intensity of all LEDs simultaneously With the command setcaptimexyz b
10. aring errors In the window Test results see figure below all light parameters which have been captured and calculated by the LED Analyzer are shown to the user The captured colour values are shown to user in three different colour spaces In the window on the left you see the RGB values followed by the HIS Hue Saturation lntensity up to the chromaticity coordinates x and y from the CIE 1931 Colour space In the lower right part the Corelated Colour Temperature CCT is shown additionally Test Results GREEN in BLUE c D Zb Hue 0 255 Saturation 0 255 Intensity Color temperature 0 100 w HSI w CIE XY 22 04 2015 Bild 14 3 Test Results main screen 14 Gr PRUFTECHNIK 3 3 2 Configuration of the LED Analyzer Configuration Interface Serial port Icom7 v Baudrate 115200 Logfile Name of LOG file Analyser log Level of LOG file je Create serial debug file Storage Path and name of test report file C LEDAnalyser 2001 Result Result txt Change Select path and name of test report file Path of sensor settings file C LEDAnalyser 200 1 Settings Change CIE Chromaticity diagrams ES 1931 2 Deviation for intensity V 0 100 absolute 0 200 Deviation for XY value V 0 100 absolute 10 0 02 Iw Don t allow any changes to the XY offset values a 0 Figure 14 3 Configuration window e D
11. asurement through the Perform measurement button the programme compares the capture with the reference values see figure If there is a deviation this is shown red The test result can be archived with the Save test report button List of measurements Reference file sensor ref Measurement completed 8 Perform measurement Save as reference Load reference Save Test Report o Figure 14 7 Comparing measurement 3 3 4 2 Changing of tolerances sensor settings and an offset To define an offset or a tolerance field refering the capture values during a comparing measurement the following possibility is available For that double click with the mouse in the Measurement settings window on the wanted sensor line The window Settings for sensor appears see figure Through this window tolerances referring to the intensity and the chromaticity coordinates XY can be entered These tolerances are provided by comparing the capture values with the reference values Furthermore any sensor settings referring to the test mode the exposure time and the range can be modified during Operation To enter an offset for the chromaticity coordinates XY you first have to deactivate the control box Don t allow any changes to XY values in the Configuration window and confirm it by clicking the OK button Here too modifications are taken over only at the nest measurement through the Measurements window Se
12. berno 1 5 b OK 0 050 or 1 495 sensor xxx value b board 4 24 Set distance between LED and Board setdistance xxx x b Set distance to light source in mm Setdistance4003 5 Fiber 4 set distance to fibernr 1 5 Default 2mm 3 5mm or 1 495 Range 000 0 999 9 mm sensor xxx x value b board 4 25 Set LED Analyzer Board to default values setdefault b Set default values OK Setdefault Set default values b board if specified otherwise board1 OK 22 04 2015 26 Gr PRUFTECHNIK 4 26 Get the Serial Number of the Analyzer getserial Get serial number of the Analyser getserial 4 digit T5A6 4 27 Get the Version of the Firmware getversion Get the version of the firmware getversion 4 digit 1034 4 28 Get the Version of the Hardware Get the version of the hardware XXXXXXXXX gethw 7 digit GPS 5 1 4 29 Set the Baud rate setbaudratexxxxxx set baud rate setbaudrate0 19200 9600 19200 38400 57600 Default 57600 OK 115200 230400 Attention Between the command and the board number a space character has to be sent For example capture215 3 capture Start Capture 2 Capture time gt 200ms MED 1 Sensibility gt High 9x9 Sensor matrix 5 Sensor gt 5 Sensor Space character 3 Board number gt 3 board in series After each command a Carriage Return CR 0x0d has to be sent Each received character string is closed with CR The baud rate between the boards amounts t
13. capture several LEDs per measurement it is recommended to find the optimal setting for each sensor over the main screen and then switch through the PopUp menu Test to the windows Measurement settings and Measurements see chapter 3 3 4 At this the sensor settings referring the exposure time and the sensor range were taken over For an application with several LEDs which have the same light intensity it is sufficient to determine the sensor setting for one LED in this way In the following this setting can be transferred through the Measurements window to the other sensors see chapter 3 3 4 Sensorvalues Test Results Red 2 Green Blue 1283 0 100 v RGB INTENSITY LL 31 w HSI v CIE XY Figure 14 4 Sensor values left und Intensity in below 22 04 2015 16 Gr PRUFTECHNIK 3 3 4 To perform a measurement and compare several LEDs by using Measurement Window and Settings Window 3 3 4 1 Measuring and comparing LEDs with differnet light intensities In order to compare LEDs use the Measurement window in connection with the Measurement settings window see figure As described in chapter 3 3 3 it is recommended to find out the optimal sensor settings through the main screen first These were taken over by opening the Measurement settings window During the take over of the exposure time and sensor range it is shown if a sensor is occupied by an offset In the below mentioned e
14. ch is used to measure the light depends on which sensitivity mode has been selected high sensitivity mode 9x9 elements low sensitivity mode 3x3 elements in center Details of active area unit um Pin No 1 side Pin No 6 side ry m 3 x 3 elements in low sensitivity mode Pin No 3 side Pin No 4 side Figure12 Digital Colour Sensor Beneath the modes High Sensitivity Mode and Low Sensitivity Mode the light intensity also can be affected by a measure time of 1ms to 10000 ms Under Test Modes Fast Capture the most important settings which allow to measure very dim and very bright LEDs without operating with additional mechanical filter are listed The Digital Sensor measures the colours and the intensity of the LED that has to be tested in RGB size The results can be shown as RGBI HUE and Saturation or CIE Chromaticity Diagram 22 04 2015 11 Gr PRUFTECHNIK 3 2 Setting an offset to calculate the tristimulus values x and There are three possibilities to store an offset for the calculation of the tristimulus values x and y These are explained in the following 1 GPS Pruftechnik offers a service for the calibration of the LED Analyzer Board In this process customers LEDs to be tested are measured with a proven calibrated spectrometer under a standardized process in our company In the next step tristimulus values which have been measured with the LED Analyzer are adjusted to the values of the spectro
15. depend on the previous settings for this sensor such as by setcaptime see below 22 04 2015 22 Gr PRUFTECHNIK 4 6 Get stored RGB Value and Intensit The get data commands are used to read out the Colour Saturation and Intensity data stored by the capture commands getrgbi b Get stored RGB Value and Intensity getrgbi3 5 1 5 if b board channel no getrgbi23 1 495 at max 99 1 5 b boards or b not specified 1 495 006 230 018 06383 Output format Description In the described example the data of LED 3 of the board 5 are numbered all the way through or read out LED 23 The values are for Red 006 for Green 230 for Blue 013 and for intensity 06383 4 7 Get stored RGB colour components by persent getcolor b Get stored RGB colour components rrr ggg bbb getcolor3 1 5 if b board in percent fibernr 1 5 or getcolor13 1 495 at max 99 1 495 boards getcolor3 2 b not specified 010 068 022 4 8 Get stored HUE Value Saturation and Intensity gethsi b get stored HUE Value Saturation and gethsi3 5 1 5 If b board Intensity channel no gethsi23 1 495 at max 99 1 85 boards or b not specified 1 495 123 47 089 04383 Output format 4 9 Get stored XY Chromaticity Value getxy b get XY Chromaticity Value 0 xxxx O yyyy getxy1 4 1 5 if b board Channel no getxy16 1 495 at max 99 1 5b boards or b not specified 1
16. dered from GPS 22 04 2015 e cf EA 10 Oo A LI ooo Of a DOUD I Lim z pz O H b E mo anon wong Toon pop go 00 I Lim D 7111604 U D nos Gi 3 d 20 900 20 00H 00 900 0 4 4 A 5 amp W E E E EB 3 a U0J8UU0J uoqoeuuoo Sng 104 aad unp JaZAJEUY JSP ay uo Buas aaduunf Buneisdo gen 104 Jedwnf Z Uld Lyd Figure 10a Connection Dia pJEOq sej y uo Jediunf OZ 6 Uld e jew y interconnected units for USB ONT Ud ON VEEE Uld A EJEQE uld E EQ ce Uld EYE uld PIC Le uld A yew MOJJSA AG L Uld 8I480 JSN AG 0 GC Uld zelewej 398uu05 JSN PRUFTECHNIK G up to 5 boards can be operated through the USB Interface In this case the LED Colour Analyzer can Complete supply voltage about 400mA be tested 25 LEDs If the power input is 80 mA per board See the physical layout below 2 2 Mountin 22 04 2015 CT x OQ A Se PSE O oY ono pop a g8 ud j bai Va 3 o EB A 20 900 08 S 20 900 0 J amp ee R FI FI FF z AST UN AND Ed ER LL GNS sna s UONDBUU0H 4sz jeuy JSE 84 ee ee uo Burgas seduing naaa u01358UU05 sna zczsu Ges 40 18dwunf Sd9D WO4 poloplo oq UBD JqLI Z SH PUE JSN Jedwunp Erz Uld Lug ON OC Uld AGL Z Un c L Uld G
17. e is reduced depending on the brightness till an overload of the segments can be avoided 22 04 2015 21 Gr PRUFTECHNIK 4 4 General Capture of Pulse Width Modulated LEDs Captures and stores the colour and intensity of Pulse Width Modulated PWM LEDs Start PWM Capture Colour Intensity capturepwm OK pm Description Puls Width Modulated PWM LEDs This command instructs the LED Analyzer to read and store the colour and intensity of all LEDs In this case a default value which is sufficient for most of the LEDs is used In order to get better results of different LEDs it is recommended to specify the exposure range manual see the next command 4 5 Manuel Capture of Pulse Width Modulated LEDs Captures and stores the colour and intensity of Pulse Width Modulated PWM LEDs with specified exposure range capturepwm z b HH Averaging Factor capturepwm103 2 10 55 Capture operations 0 5 Capture operations 1 10 Capture operations z Channel 3 2 15 Capture operations Capture operations b Board 2 Capture operations z Channal b Board Description Puls Width Modulated PWM LEDs This command allows an optimal setting for each Puls Width Modulated PWM LED The first two factors refer to the averaging factor z applies to the channel and b marks the board which is used The averaging factor is divided into 15 ranges factor 2 are 15 capture operations The settings of the capture time and the sensor area
18. eviation for intensity e Deviation for XY values Don t allow any changes 22 04 2015 e Before a measurement can be carried out with the LED Analyzer the following configuration settings have to be selected Serial port Through this PopUp menu you select the Com port which Windows assigns the LED Analyzer Through The selection of Auto the programme searches the assigned Com port automatically If you want to determine the assigned Com port manually than go to the connections COM amp LPT via the control panel and the device manager Baud rate Here you can adjust the baud rate Recent devices have a baud rate of 115200 Logfile window In this window the Logfile is defined This box do not really matter for the usual application It is only needed for an error analysis for the GPS Analyzer programme Storage window Defines the locations for the Test Report File and the Sensor Settings File CIE C diagrams If the CIE colour space was selected through the View PopUp menu different CIE colour spaces can be selected through this window These are shown on the main screen This options define a tolerance window which is respected at comparative measurements of LEDs If the measurement value is within the tolerance window regarding the reference value the LED is considered to be good The tolerances for the individual LEDs can be changed in the Measurement settings window additionally see chapter 3 3 4 Cond
19. g t he Change all settings button the parameters are transferred to the other sensor lines After a measure through the Measurement window the modifications will become effective e If you want to take over the offsets of one sensor for the other sensors only partially or totally you have to deactivate the control box in the Configuration window At the same time the control box in the Settings for sensor window has to be deactivated fo reach sensor for which you want to take the offset over At sensors where the old offset setting should remain the control box in the Settings for sensor window has to stay activated Following that select the sensor whose parameters should be transferred by clicking and check Whether the control box in the Settings for sensor window is also deactivated Then press the Change all settings button after selecting the sensor At least carry out a measurement through the Measurement window in order to take over the parameters in the measurement Modifications referring to the offset and sensor settings are taken over basically only after another measurement through the List of measurement window 3 3 4 3 Reset the offset settings to the delivery status To restore the delivery status of the LED Analyzer boards use the command Reset Board in the PopUp menu Test After carrying out this command the LED Analyzer has to be logged out through the Disconnect button and the softw
20. information please look up the producers datasheet The gap between the LED and the fiber should be 1 3 mm This must be find out empirical in individual cases Gap Wu Offset Figure 5 Offset and Gap The intensity of ameasurement depends strongly on the gap and the offset from the LED to the fiber 22 04 2015 PRUFTECHNIK There are different possibilities to position a fiber above the LED which has to be tested 1 Mounting with a 75 mil socket The recommended method of mounting the fiber is using the supplied 1mm ID with a 75 mil socket Another advantage of the socket is the internal indentation which fixes the fiber effectively in position during the debugging After the debugging the fiber can be held in position using a small dot of silicon adhesive 2 Attachment for thin fibers Additional to the 75mil sockets you can also use the attachment E39 F9 In that case the fixing with silicon is not necessary O 1 1 PET Figure 7 Attachment E39 F9 The advantage the fiber is fixed permanently and can be changed easily if required 1 3 Cutting the Fiber Figure 8 Cutting tool for the fibers The fibers of the LED Analyser are delivered standardly with a length of about 600 mm To avoid damages it is recomended to shorten the fibers to the correct length While cutting take care that the fiber is in a 90 to the razor otherwise a loss of light has to be expected It is recommended to use
21. informs you about the used GPS LED Analyzer version GPS LED Analyser File View Communication Test Stability Analysis Terminal Mode Help GPS Digital Color Analyser GPS Pr ftechnik GmbH Tel 08141 527470 Communication m Test Configuration XY Chart Select Board Board v a CONNECT Select LED LED 1 Test Modes Manual Capture ou Sensor Range MED 3x3 200ms CONNECTED MED 3x3 200ms e 931 2 deqree Observer Test Results Sensorvalues Red 0 255 Hue X Green 0 255 Saturation Y Blue 0 255 Intensity Color temperature uer Tj 22 04 2015 13 0 100 Iv HSI lv CIE XY Figure 14 1 Main screen Gr PRUFTECHNIK GPS Digital Color Analyser The graphic beside shows a detail of the main screen of the LED Analyzer The following steps explain the functions of the individual Communication r Test Configuration controls Select Board Board m S n e Connect Button After pressing the Connect Button the CONNECT Select LED LED 1 LED Analyzer is connected with the ers Cope E software In doing SO the button label 3 turns into Disconnect After pressing NOT l ae Sensor Range MED 3x3 200ms once again the LED Analyzer Board is CONNECTED logged off e Not Connected Label Shows the particular connection status Figure 14 2 Detail main screen e Select LED Test Modes e Information Screen
22. meter This takes place during uploading the firmware using a non volatile stored offset 2 In addition to that there is a possibility to integrate the LED Analyzer in an existing test system through an initialisation of the com port and a command listed in chapter 4 At this application an offset for each LED that has to be measured can be stored using the commands setxoffset 0 xxxxb or setyoffset 0 xxxxb However this is a volatile stored offset which get lost after switching off the board from the current source or after using the command setdefaultb 3 Furthermore an offset can be stored using the included software GPS LED Analyzer This is as described in point 2 a volatile storage space and get lost after switched off from the current source or the command Reset board The following steps explain how an offset can be stored at the board using the software Regarding to the LED Analyzer Software it has to be mentioned that stored offsets and modifications were taken over and are shown in the menu displays Measurement settings or Setting for sensor only during the measurement See details for setting and adjusting an offset in chapter 3 3 4 Below you will find a brief explanation of an offset setting To set an offset through the LED Analyzer Software the ticker in the control box at Don t allow any changes to the xy offset values has to be removed You find this control box under Configuration
23. n you reach all required functions and control elements The upper line shows several PopUp menus which are explained shortly below and are described in details in the follow ing chapters e File Through this menu you close the software e View Through this you can change between the colour spaces which are shown in the right half For that the HSI colour wheel the RGB colour palette and the CIE colour space is available Using the CIE colour space you can chose between three representations through the menu Communication Configuration You find the particular measurement values of the several colour spaces in the right half of the Test result display Communication Through this the LED Analyzer Board is connected or disconnected Furthermore the configuration settings of the LED Analyzer can be opened through the Communication menu see chapter 3 3 2 e Test Through the Test PopUp menu the manual for measuring and comparing several LEDs is opened see chapter 3 3 4 In addition test reports can be stored an opened The function Reset board is used if offsets were set during the operating and the initial state has to be re established Basically the software has to be restarted after a Reset board see also chapter 3 3 4 e Terminal Mode After opening one terminal you can communicate directly with the LED Analyzer Board with the aid ofthe command list from chapter 4 e Help The help function
24. o 115200 and is not changeable 22 04 2015 27 E PR FTECHNIK GPS Group Office South GPS Pr ftechnik GmbH Waldstr 4 D 82239 Alling Telefon 49 8141 52 747 0 Telefax 49 8141 52 747 47 Office Rhein Main GPS Pr ftechnik Rhein Main GmbH Ferdinand Porsche Str 17 D 63500 Seligenstadt Telefon 49 6182 89 37 0 Telefax 49 6182 89 37 37 Office Nord GPS Pr ftechnik GmbH Steigerring 25 D 59075 Hamm Telefon 49 2381 99 110 0 Telefax 49 2381 99 110 99 Internet gps prueftechnik de Hungary GPS Pr ftechnik Kft Zrinyi M u 105 HU 8900 Zalaegerszeg Telefon 36 92 510 740 Telefax 36 92 510 741 Switzerland GPS Pr ftechnik AG T fernstr 2a CH 5405 Baden D ttwil Telefon 41 56 483 25 80 Telefax 41 56 483 25 89 Office East Dieter Boldt Olwenstra e 26 D 13465 Berlin Telefon 49 30 401 19 03 Telefax 49 30 401 00 816 E Mail info gps prueftechnik de Copyright 2005 2009 by GPS Pr ftechnik GmbH All rights reserved No parts of this manual may be reproduced or retransmitted in any form or means electronic or mechanical including photocopying recording or any other storage and retrieval system without prior permission in writing from GPS Pr ftechnik GmbH 22 04 2015 28
25. the capture time and sensor area can be set before the real capture 22 04 2015 20 Gr PRUFTECHNIK 4 3 Manual Capture Captures and stores the colour and intensity of each LED with specified exposure range OK capturexyz b x Exposure range capture time capture 215 3 x Messzeit 200ms 1 600 ms 2 200 ms y Sensor High 9x9 3 120ms 4 60 ms z Kanal 5 5 20 ms 6 10 ms b Board 3 7 2 ms 8 user programmierbar 9 aktuelle Einstellung wird iibernommen capture 31 x Messzeit 120ms Sensor aus y Sensor High 9x9 y 0 Vorwahl Sensor Low 3x3 f r alle Kan le und y 1 Vorwahl Sensor High 9x9 Boards capture 3117 z Vorwahl Kanal 1 5 oder 1 n capture 312 4 x Messzeit 120ms b Vorwahl Board 1 n y Sensor High 9x9 Kanal 17 oder Kanal 2 auf Board 4 Description This command allows an optimal setting for each LED which is to be tested Dim LEDs are captured with a longer capture time e g 600 or 200ms and the setting Sensor High is used thereby all 9x9 segments of the sensor are used For very bright LEDs the setting Sensor Low has to be chosen only 3x3 segments of the sensor are used And the capture time has to be reduced e g 10 or 2 ms Figure 13 Digital Sensor The Digital Sensor consists of 9x9 81 segments for the colours red green and blue For dim LEDs all segments are used and a longer exposure time is chosen For very bright LEDs only the 3x3 9 segments in the medium range are used and the exposure tim
26. ticity Off setyoffset1 0 050 set fiber 1 Y offset to fiberno 1 5 b OK 0 050 or 1 495 sensor xxx value b board 4 17 Get distance between LED and Board getdistance b Get stored distance value in mm getdistance4 1 5 wenn b board fibernr Se 1 495 bei max 99 1 5 oder boards 1 495 b b not specified board 4 18 Set the Capture time without Capture setcaptimexyz b x set capture time setcaptime2115 x 2 200ms 1 600 ms 2 200ms 3 120ms OK y 1 sensor low 9x9 4 60ms 5 20ms 6 10ms z 1 sensor 1 5 or 1 495 7 2ms 8 user programmable O off without capture only set b board if z 1 5 4 19 Set the Average Factor without Capture setaverage b average factor OK setaverage10 0 5 15 80 average without capture only set 22 04 2015 25 Gr PRUFTECHNIK 4 20 Set amplification for Intensit setintgain xxx set amplification for intensity setintgain 1095 fiber 1 set to 95 setintgain 23095 fiber 23 set to 95 H sensor xxx value b board 4 21 Set user capture time setusertime b set user capture time setusertime0 1000 10000ms b board 4 22 Set the X Chromaticity Offset setxoffset 0 xxx set x chromaticity offset setxoffset1 0 050 set fiber 1 x offset to Fiberno 1 5 b OK 0 050 or 1 495 sensor xxx value b board 4 23 Set the Y Chromaticity Offset setyoffset 0 xxx set Y chromaticity Off setyoffset1 0 050 set fiber 1 Y offset to Fi
27. ttings for sensor im Test Modes Measure Time Usertime ms Gain XOffset YOffset Distance 5 800 100 0 0000 0 0000 20 Deviation for intensity Yo 100 absolute Yo 100 absolute Don t change XY offset Im a m Im w pa _ Abbrechen Figure 14 8 Settings for sensor 22 04 2015 18 Gr PRUFTECHNIK 3 3 4 3 Measuring and comparing several LEDs of the same light intensit To compare LEDs of the same light intensity it is sufficient to determine the optimal sensor settings through the main screen Enter the Measurement settings window By clicking the sensor line then select the sensor of which You want to take over the parameters Now press the Change all settings button to take over the sensor settings Following that carry out a measure through the Measurement window in order to determine the reference values During the take over of the sensor settings particular care should be paid whether you want to take the offset over or not For this there are control boxes in the Configuration window and in the Settings for Sensor window whose Functions are described in the following e If you want to transfer sensor parameters without an offset from one sensor to all the other sensors then you have to activate the control box Don t allow any in the Configuration window and confirm it with OK Select the sensor of which the parameters should be taken over By clickin
28. ucts analogously with Deviation for Intensity This control box is like a safety query if a XY offset should be changed by the user through the List of settings window As long as the ticker is set there is no possibility to change the offsets of a sensor The status of the control box is stored when closing the software and is recaptured when opened again 15 Gr PRUFTECHNIK 3 3 3 To perform a measurement by using the functional elements of the main screen After having done all required settings through the configuration window it is now to find out the right test mode and the settings for your application Basically it is recommended to capture with a greatest possible light intensity The intensity refers to the by the sensor initially measured RGB values see figure 14 4 The value for the light intensity should be between 30 and 80 This avoids that the sensor is operated outside the linear sensor sensitivity function referring to the colour parameters So an optimal test result can be reached In the first step select the wanted sensor After that start measuring with a sensor range of 9x9 and a large exposure time In the next steps reduce the exposure time so long until you are in a light intensity range of 30 80 In case that the reduction of the exposure time is not enough set the sensor range from 9x9 to 3x3 and repeat the determination of the optimal exposure time as just described If you have to
29. xample five sensors were set via the main screen Thereby sensor three with a non volatile stored offset is occupied by fixed calibration List of settings xs Manual Capture Manual Capture Manual Capture Manual Capture Manual Capture Save settings Load settings L a Figure 14 5 List of settings By opening the Measurement window the colour values for the five set sensors which have been find out over the main screen appear see figure List of measurements A 0 1567 MAN ULT 0 3179 5869 5774 MAN ULT 0 2142 215 MAN ULT 0 6887 ar MAN ULT 0 6434 MAN ULT Save as reference Load reference Save Test Report Figure 14 6 List of measurement 22 04 2015 17 Gr PRUFTECHNIK Let us assume that the five read in LEDs are considered as reference LEDs by which the following LEDs of the same type are compared To this the determined values have to be stored with the Save reference button and uploaded with the Load reference button Now perform a re measurement with the Perform measurement button without changing the test environment The colour values appear green That means that the software has recognized the values as reference It is recommended to store the setting over Save settings otherwise the settings have to be entered again when the software is rebooted When you exchange the reference LEDs with the LEDs which have to be proofed and perform a re me
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