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GPS Prueftechnik Digital Colour Analyzer User Manual Download Page 17

 

02.11.2018 

 

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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 example five sensors were set via 
the main screen. Thereby sensor three with a non-volatile stored offset is occupied by fixed calibration. 

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). 

Figure 14.5: List of settings 

Figure 14.6:  
List of measurement 

Summary of Contents for Digital Colour Analyzer

Page 1: ...02 11 2018 1 User Manual for Digital Colour Analyzer GPS Prueftechnik GmbH www gps prueftechnik de E Mail info gps prueftechnik de ...

Page 2: ...r 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 s...

Page 3: ...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 th...

Page 4: ...intensity of a measurement depends strongly on the gap and the offset from the LED to the fiber 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 Minimu...

Page 5: ...e attachment E39 F9 In that case the fixing with silicon is not necessary The advantage the fiber is fixed permanently and can be changed easily if required 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 ...

Page 6: ...of 7 15V 80mA has to be applied additionally RS 232 Connect Female 2 Pin 23 Rx 2 RS 232 Kabel Pin 2 Tx 2 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 Figure 9 Phy...

Page 7: ...uring USB operating the power supply for the board takes place through the USB Interface 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 ordered from GPS Figure 9 Physical Layout ...

Page 8: ...port up to 5 devices max 400 mA Data bus Board 1 up to N 1 Pin 19 Rx4 Board N Pin 24 Tx2 Pin 20 Tx4 Pin 23 Rx2 Pin 6 GND Pin 5 GND Pin 4 5V Pin 3 5V Pin 19 20 Jumper Figure 10a Connection Dia 2 2 Mounting interconnected units for USB If the power input is 80 mA per board up to 5 boards can be operated through the USB Interface Complete supply voltage about 400mA In this case the LED Colour Analyze...

Page 9: ...ow mark Pin 24 Tx 2 Pin 3 Rx 2 Pin 25 26 GND Pin 5 GND Data Bus Female2 Pin 19 Rx 4 Pin 21 22 GND Pin 20 Tx 4 Pin 23 Rx 2 Pin 25 26 GND Pin 24 Tx 2 Last board setting Jumper Female 2 Pin 19 20 Jumper Supply Voltage Each board has an own power supply unit and can be operated 7V to 15V power input about 80mA Female 2 Pin 1 2 U In 7 15V Pin 5 6 GND BR1 Pin 2 3 Jumper USB and RS 232 cable can be order...

Page 10: ...Set the serial port to Auto and the baud rate to 115200 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 cha...

Page 11: ...ity mode 3x3 elements in center 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 m...

Page 12: ...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 Measurem...

Page 13: ...surement 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 Test Through the Test PopUp menu the manual for measuring and comparing several LEDs is opened see chapter 3 ...

Page 14: ...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 do...

Page 15: ...eport 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 Figure 14 3 Configuration window Deviation for intensity This options define a tolerance window which is respected at comparative measurements of LEDs If the measurement value is wi...

Page 16: ...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 capture several LEDs per measurement it ...

Page 17: ...sor 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 example five sensors were set via the main screen Thereby sensor three with a non volatile stored offset is occupied by fixed calibration By opening the Measurem...

Page 18: ... be archived with the Save test report button 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 Throug...

Page 19: ...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 ...

Page 20: ...d 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 Transmit Description Receive Example Comment capture Start Capture Colour Saturation Intensity OK capture OK Capture all boards and sensors with the current set up Des...

Page 21: ...esszeit 120ms 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 u...

Page 22: ...Ds Captures and stores the colour and intensity of Pulse Width Modulated PWM LEDs with specified exposure range Transmit Description Receive Example Comment capturepwm z b Averaging Factor 0 5 Capture operations 1 10 Capture operations 2 15 Capture operations 3 20 Capture operations 15 80 Capture operations z Channal b Board OK capturepwm103 2 10 55 Capture operations z Channel 3 b Board 2 Descrip...

Page 23: ...escription Receive Example Comment gethsi b channel no 1 5 b or 1 495 get stored HUE Value Saturation and Intensity hhh hh sss iiiii gethsi3 5 gethsi23 123 47 089 04383 1 5 if b board 1 495 at max 99 boards b not specified Output format 4 9 Get stored XY Chromaticity Value Transmit Description Receive Example Comment getxy b Channel no 1 5 b or 1 495 get XY Chromaticity Value 0 xxxx 0 yyyy getxy1 ...

Page 24: ...r all fibers Transmit Description Receive Example Comment getranges b Get ranges of the intensity for all fibers of one board m f m f m f m f m f getranges 2 from board 2 2 0 2 0 3 1 1 0 6 1 See capturexyz b m capture time 0 8 f sensor range 0 1 0 3x3 or 1 9x9 b board 4 14 Get the User Time Transmit Description Receive Example Comment getusertime b Get usertime xxxxx getusertime from board 1 01000...

Page 25: ...fiber 1 x offset to 0 050 sensor xxx value b board 4 16 Set the Y Chromaticity Offset Transmit Description Receive Example Comment setyoffset 0 xxx fiberno 1 5 b or 1 495 set Y chromaticity Off OK setyoffset1 0 050 OK set fiber 1 Y offset to 0 050 sensor xxx value b board 4 17 Get distance between LED and Board Transmit Description Receive Example Comment getdistance b fibernr 1 5 oder 1 495 b boa...

Page 26: ...tance xxx x b fibernr 1 5 or 1 495 Set distance to light source in mm Default 2mm Range 000 0 999 9 mm OK Setdistance4003 5 OK Fiber 4 set distance to 3 5mm sensor xxx x value b board 4 25 Set LED Analyzer Board to default values Transmit Description Receive Example Comment setdefault b Set default values OK Setdefault OK Set default values b board if specified otherwise board1 Transmit Descriptio...

Page 27: ... xxxxxxxxx gethw GPS 5 1 7 digit 4 29 Set the Baud rate Transmit Description Receive Example Comment setbaudratexxxxxx set baud rate Default 57600 OK setbaudrate019200 OK 9600 19200 38400 57600 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 200ms MED 1 Sensibility High 9x9 Sensor matrix...

Page 28: ...alaegerszeg Telefon 49 8141 52 747 0 Telefon 36 92 510 740 Telefax 49 8141 52 747 47 Telefax 36 92 510 741 Office Rhein Main Switzerland GPS Prüftechnik Rhein Main GmbH GPS Prüftechnik AG Ferdinand Porsche Str 17 Täfernstr 2a D 63500 Seligenstadt CH 5405 Baden Dättwil Telefon 49 6182 89 37 0 Telefon 41 56 483 25 80 Telefax 49 6182 89 37 37 Telefax 41 56 483 25 89 Office Nord Office East GPS Prüfte...

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