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Image Engineering 

 

Seite 

4

 von 

45

 

9.1

 

Trademarks .............................................................................................................. 45

 

9.2

 

Software by third parties .......................................................................................... 45

 

9.3

 

Copyright information ............................................................................................... 45

 

1  INTRODUCTION 

LED-Panel is the ideal measurement device to determine shutter and shooting time lag, 
autofocus time, burst frame rate, exposure times, and the rolling shutter speed of a digital 
imaging device.  

Exact measurements with accuracy better than one millisecond are possible with this device. It 
meets all the requirements of the ISO 15781 standard, which describes the measurement of 
shooting time lag, shutter release time lag, shooting rate, and start-up time. 

The LED-Panel has an interface that can be controlled from a computer. Use a standard USB 
port to select the different operation modes of the LED-Panel. Shutter and shooting time lag can 
be activated by adjusting the LED frequency, the display refresh mode, and the continuous 
mode for exposure time and frame rate measurements. 

Of course, the rolling shutter mode with its 10 LED rows that move simultaneously can also be 
selected through the command-line interface. Via USB, each mode can be triggered 
individually, and the LED sequence's direction can be changed.

 

 

IMPORTANT INFORMATION  

Read the manual carefully before using the device.  

Inappropriate utilization may cause damage to the device, to the DUT (device under 
test), or other components of your setup.  

Keep these instructions in a safe place and pass them to any future user.  

1.1  Intended use 

LED-Panel V5 is designed to perform timing measurements on digital cameras. Measurements 
according to ISO 15739 are possible with LED-Panel V5.  

•

 

Only suitable for indoor use. 

•

 

Place your system in a dry and constant tempered environment without interfering light. 

•

 

The optimal ambient temperature range is 22 to 26 degrees Celsius. The maximum 

ambient temperature range is 18 to 28 degrees Celsius.  

•

 

The device has a maximum error of < 0.06%.  

•

 

An accuracy of better than one millisecond enables extremely precise measurements.  

•

 

A software-based analysis is included in the LED-Panel software.  

Содержание LED-Panel V5

Страница 1: ...Image Engineering GmbH Co KG Im Gleisdreieck 5 50169 Kerpen Horrem Germany T 49 2273 99991 0 F 49 2273 99991 10 www image engineering com LED Panel V5 User Manual 10 May 2022 ...

Страница 2: ...g the LEDs running direction 8 Display brightness 8 4 MEASUREMENT METHODS 9 4 1 Shutter lag without autofocus time 9 4 2 Shutter lag with autofocus time 10 4 3 Exposure time 11 4 4 Video recording rate Frame rate 12 4 5 Speed of multi shot mode 13 4 6 Rolling shutter speed 14 5 OPERATING INSTRUCTIONS SOFTWARE 17 5 1 Requirements 17 5 2 Software installation 17 5 3 Set up hardware and software for ...

Страница 3: ...p Trigger 35 6 2 18 Get the enabled disabled state of the external input Stop Trigger 36 6 2 19 Set the intensity of the display backlight 36 6 2 20 Get the intensity of the display backlight 37 6 2 21 Set the direction of the LEDs for Response Time and Exposure Time modes 37 6 2 22 Get the direction of the LEDs for Response Time and Exposure Time modes 38 6 2 23 Set the direction of the LEDs for ...

Страница 4: ...ments Of course the rolling shutter mode with its 10 LED rows that move simultaneously can also be selected through the command line interface Via USB each mode can be triggered individually and the LED sequence s direction can be changed IMPORTANT INFORMATION Read the manual carefully before using the device Inappropriate utilization may cause damage to the device to the DUT device under test or ...

Страница 5: ...ut any instructions from the Image Engineering support or when connected to the power supply 1 4 Eye safety If you use the LED Panel infrared version please wear the supplied safety googles according to IEC 62471 2009 Do not look directly into the emitted light or look through the optical LED system this can cause irreversible eye damage 2 GETTING STARTED 2 1 Scope of delivery LED Panel V5 power s...

Страница 6: ...nob for changing the frequency and dimming of the LED array and the display USB Mini port connection to PC Stop trigger 3 5 mm TRS connector signal input Camera trigger 3 5 mm TRS connector signal input iQ Trigger before Digitus 6 3 mm TRS connector signal output Defocus 6 3 mm TRS connector signal output Power switch Power connection The square array of 100 LEDs is separated into ten rows each co...

Страница 7: ...igger The trigger is indicated on the LCD display in the top row Cont Trigger Continuous Sngl Trigger Single A remote release is connected to the LED Panel for the external operating mode When connecting to the CAMERA TRIGGER input the LED Panel starts by pressing and stops by releasing the remote release button and returns to the start position The period between two triggered events can be calcu...

Страница 8: ...ft top edge of the LED matrix and run to the right top edge It then jumps to the left of the second top line runs from left to right and continues to the bottom of the LED matrix The indication 12 12 means that a column of 10 LEDs starts from the left and runs to the right Display and LED array brightness The brightness of the display can be modified by using the rotary knob Press and hold the rot...

Страница 9: ...GER EXT operating mode and the time is set The LED Panel is connected to and is started with a remote release A micro switch button must be connected to the release button on the camera and the camera must be focused with both buttons pressed to measure the shutter lag After the shutter lag has passed the camera takes a picture of the running LED Panel The time passed since the microswitch was pre...

Страница 10: ...cribed in Shutter lag without autofocus time The shutter lag without autofocus time is calculated The camera focus is set to infinity and afterward a picture of the LED Panel is taken with the microswitch s help After the time for the autofocus and shutter lag has passed the camera takes a picture of the running LED Panel The time passed since the microswitch and release button was pressed and aut...

Страница 11: ...time LED No 32 lights up 3 2 s Autofocus time 3 2 s 0 2 s 3 s 4 3 Exposure Time Exposure times of cameras can be measured with the aid of the LED Panel When setting the LED Panel to CONTINUOUS trigger mode and adjusting the time a picture of the LED Panel is taken The exposure time can be read by analyzing the lit LEDs Figure 3 Shutter lag without autofocus time Figure 4 Shutter lag with autofocus...

Страница 12: ...g devices possible The LED Panel is set to the frame rate mode Frame rate and is being recorded on the camera The frequency of the LED Panel must now be counterbalanced with the rotary knob until the lower row of LEDs stops blinking on the camera display The LED Panel has now matched the frame rate of the camera The manual frequency scan should be started at the lowest level because the frame rate...

Страница 13: ...nd the time must be defined Afterward pictures of the LED Panel are taken in multi shot mode The speed of multi shot mode can be calculated from a distance between the live LEDs in two consecutive images Figure 6 The frequency of the LED Panel does not match the frame rate of the camera flickering LEDs Figure 5 The frequency of the LED Panel matches the frame rate of the camera LEDs glow permanent...

Страница 14: ...between starting the LED Panel and camera release We have developed a device that is guaranteed to push both buttons micro switch and camera release button in less than five milliseconds The so called iQ Trigger activates the camera release mechanically The iQ Trigger is available as a separate product All ten rows of LEDs are operated simultaneously in the rolling shutter operating mode This mean...

Страница 15: ...ite 15 von 45 Image Engineering Figure 11 In the rolling shutter mode all ten rows of LEDs are operated simultaneously Figure 11a In case of a rolling shutter effect an off set of the LED rows is visible ...

Страница 16: ...tware based rolling shutter analysis one in the top left corner and one in the bottom right corner For detailed information on setting up two LED Panels with your device under test please see the following two infographics Figure 12 internal wiring Figure 13 setting up for timing measurement ...

Страница 17: ...ohn_Doe AppData Roaming Image Engineering to store application settings 5 3 Set up hardware and software for software control Connect the power cord to the power supply on the side of the LED Panel Connect the power supply to electricity Connect the USB cable to the LED Panel and your PC Switch on LED Panel by setting the power switch to I The power switch is located beside the power supply 5 4 So...

Страница 18: ... and stopping the LED Panel adjusting the LED array and displaying brightness You can also release an iQ Trigger attached to the LED Panel once or set an interval to release it periodically to take a series of images For the analysis of images the LED Panel software provides a convenient way to evaluate camera timing such as shooting release time lag with the assistance of the LED Panel device acc...

Страница 19: ...and dropping them onto the file list Figure 16 or using the file browser by clicking the add button below the list The images are arranged in a Measurement tree structure sorted in ascending order So each image belongs to a measurement You can create a new measurement by dropping images on the empty area or using the plus sign button To add an image to an existing measurement drag and drop it over...

Страница 20: ...the general settings LED Panel and iQ Trigger tabs are used to control connected devices Figure 17 In the Analysis tab Figure 17 you can choose the measurement method and the frequency The set frequency is used to calculate the time shown by the LED Panel in your images For further details on measuring different camera timings please refer to chapter 5 and ISO 15781 Note Ensure that the frequency ...

Страница 21: ...rightness and Display brightness adjust the LED array and display brightness This adjustment might be helpful when changing the camera s exposure time correctly for specific testing conditions For example if you perform a test under low light conditions and use the automatic exposure mode of your camera Without dimming the LED array and display of LED Panel the bright LED and display light can inf...

Страница 22: ...particularly useful for cameras that buffer images even before the user releases the camera trigger The difference between it and the actual glowing LED in the image represents the negative shooting or shutter release time lag Defocus time Time between triggering the defocus and start of LED Panel and iQ Trigger Sequence Time between iterations Iterations Defining the amount of release iterations ...

Страница 23: ...ED Panels there will be four LED Panel entries for this particular image with the measured time for each one of them The resulting tree can be collapsed or expanded by clicking the arrow button in the top right corner 5 5 6 Menu bar The menu bar Figure 15 provides some quick accessible options File Open opens the Open file dialog Quit closes the application Options Export opens the export setting ...

Страница 24: ... Panel The status bar Figure 15 at the bottom of the application shows the serial number s of the connected LED Panel By clicking a serial number the specific LED Panel display will start flashing 5 6 Measurement Before analyzing images with the LED Panel software you should keep a few things in mind to ensure proper functioning Make sure that the images are correctly exposed Under or overexposed ...

Страница 25: ...Please click the Start button under the control panel to start the analysis A progress bar above the image view will display the analysis progress and it will disappear immediately when the analysis is finished Now you can see the detected LEDs in the image view Figure 15 On the right side the results will appear and they will be written into result files in the selected folder ...

Страница 26: ... 1 Introduction This document provides help on the implemented command line functions of the LED Panel and is intended to assist in the scripting of the control software on Microsoft Windows These instructions generally apply to LED Panels V3 V4 and V5 which must be connected to a PC via USB The commands are command line based and the command line consists of an executable file along with the func...

Страница 27: ...formation LED Panel h or LED Panel help Examples LED Panel exe setTrigger Cont LED Panel setTrigger Cont When using more than one LED Panel connected to your PC the desired LED Panel must be set as active Examples addressing an LED Panel with the serial number LP40001 LED Panel exe serial LP40001 LED Panel serial LP40001 6 2 Operation Functions 6 2 1 Set Operation Mode Function setMode mode Descri...

Страница 28: ...xample LED Panel exe setMode 2 After the execution of this command the LED Panel will change into the exposure time measurement mode 6 2 2 Get Operation Mode Function getMode Description LED Panel exe getMode returns the current operation mode Return parameters Return value Description 1 Response time measurement 2 Exposure time measurement 3 Frame rate measurement 4 Rolling shutter mode 5 All LED...

Страница 29: ...gger Description LED Panel exe setTriggerMode trigger sets the trigger mode Parameters trigger Description 1 internal continuous trigger 2 external single trigger Example LED Panel exe setTriggerMode 1 After the execution of this command the LED Panel will change into the internal continuous trigger mode 6 2 4 Get Trigger Mode Function getTriggerMode Description LED Panel exe getTriggerMode return...

Страница 30: ...ption With the function LED Panel exe setTime time it is possible to set the switching time cycle duration of the LED Panel Parameters Value range LED Panel V5 from 0 00002 9 9 s Value range LED Panel V4 from 0 0002 9 9 s Value precision 0 00002 0 0001 steps of 0 000001 s 0 0001 0 001 steps of 0 00001 s 0 001 0 01 steps of 0 0001 s 0 01 0 1 steps of 0 001 s 0 1 1 0 steps of 0 01 s 1 0 9 9 steps of...

Страница 31: ...uting the command LED Panel exe getTime the device will return the cycle duration in seconds or the index of the set time in case of exposure mode 6 2 7 Start Measurement Function start Description LED Panel exe start starts the measurement ignoring the camera trigger input from the camera microswitch 6 2 8 Stop Measurement Function stop Description LED Panel exe stop stops the measurement without...

Страница 32: ...he device is stopped 1 a measurement is running Table 1 Example LED Panel exe isRunning After the execution of the command the device will return the value 0 or 1 representing the current measurement state 6 2 10 Reset Measurement Function reset Description LED Panel exe reset clears all the lighting LEDs and prepares the device for a new measurement 6 2 11 Get Camera Trigger Input State Function ...

Страница 33: ...nction getStopTrigger Description LED Panel exe getStopTrigger returns the state of the digital input Stop Trigger Return parameters Return value Description 0 digital input Stop Trigger is not activated 1 digital input Stop Trigger is activated Table 3 6 2 13 Get the Number of Currently Activated LED Function getCurrentLED Description With the function LED Panel exe getCurrentLED it is possible t...

Страница 34: ...ld There have been 65 switching periods in total Return value 623 means that the LED number 6 is illuminated in the lower LED row and the number 23 is illuminated in the square field There have been 623 switching periods in total 6 2 14 Put the LED Panel in sleep mode wake from sleep mode Function setSleepMode mode Description LED Panel exe setSleepMode 1 puts the device in sleep mode LED Panel ex...

Страница 35: ...the Enabled Disabled State of the external input Camera Trigger Function getCameraTrigger Description After executing the command LED Panel exe getCameraTrigger the device returns to the current activation state of the external input Camera Trigger Return parameters Return value Description 0 digital input Camera Trigger disabled 1 digital input Camera Trigger enabled Table 5 6 2 17 Enable Disable...

Страница 36: ... Enabled Disabled State of the external input Stop Trigger Function getStopTrigger Description After executing the command LED Panel exe getStopTrigger the device returns the current activation state of the external input Stop Trigger Return values Return value Description 0 digital input Stop Trigger disabled 1 digital input Stop Trigger enabled Table 7 6 2 19 Set the Intensity of the Display Bac...

Страница 37: ...Brightness the device will return a one two or three digits value of the backlight intensity in For instance Return value 27 means that the intensity of the backlight is 27 Return value 0 means that the backlight is turned OFF Return value 100 means that the intensity of the backlight is 100 6 2 21 Set the Direction of the LEDs for Response Time and Exposure Time Modes Function setDirectionSingle ...

Страница 38: ...nSingle Description The function LED Panel exe getDirectionSingle returns the current moving direction of the LEDs in the Response Time and Exposure Time modes Return values After executing this function the device will return a one digit value of the current LED direction For the possible return values list please refer to Table 1 6 2 23 Set the Direction of the LEDs for Rolling Shutter Mode Func...

Страница 39: ...re Time mode Function setTime XX Description With the function LED Panel exe setTime XX it is possible to set the switching time of the LEDs in the Exposure Time mode Parameters Please refer to the following table to set the desired switching time between 1 50000s and 10s PLEASE NOTE Parameters 01 to 03 are currently not applicable They are reserved for future design XX switching time s XX switchi...

Страница 40: ...e to 1 5000s call LED Panel exe setTime 15 To set the LED switching time to 1 125s call LED Panel exe setTime 38 6 2 26 Get LEDs Switching Time for the Exposure Time Mode Function getTime Description With the function LED Panel exe getTime it is possible to read the LED switching time of the device in the Exposure Time mode Return parameters After executing the command LED Panel exe getTime the de...

Страница 41: ...lue range is 1 250 1 0 1s 2 0 2s 10 1s Example Trigger the iQ Trigger in standard mode for 1 5s LED Panel setTrigger 1 setTrigger 15 6 2 28 Trigger iQ Defocus LED Panel V5 and V4 only Function setDefocus Description If an iQ Defocus is connected to the LED Panel it can be triggered by using LED Panel setDefocus mode setDefocus duration For the parameters please see the iQ Defocus user manual 6 2 2...

Страница 42: ...ode Description 0 Off 1 On 6 2 30 Set post roll time LED Panel V5 and V4 only Function setPostRollTime Description The LED Panel keeps running for a certain time after triggering the iQ Trigger using LED Panel setPostRollTime duration Value 0 to 30000ms Example LED Panel setPostRollTime 2000 6 2 31 Set the Intensity of the LED array LED Panel V5 only Function setLedBrightness XXX Description With ...

Страница 43: ...Brightness it is possible to read the intensity of the LED array Return Parameters After executing the function LED Panel exe getLedBrightness the device will return a one two or three digits value of the LED array brightness in counts For instance Return value 0 means that the LED array is turned OFF Return value 100 indicates that the intensity of the LED array is 100 ...

Страница 44: ...echanical components are included in the LED Panel Observe your national regulations and ensure that third parties cannot use the LED Panel after disposing of it Contact Image Engineering if assistance for disposal is required 8 TECHNICAL DATA SHEET See annex for the technical data sheet It can also be downloaded from the website of Image Engineering at www image engineering com ...

Страница 45: ...OLELY THE RESPONSIBILITY OF THE CONSUMER TO DETERMINE THE SOFTWARE SUITABILITY FOR A PARTICULAR PURPOSE OR USE IMAGE ENGINEERING GMBH CO KG AND ANYONE ELSE WHO HAS BEEN INVOLVED IN THE CREATION PRODUCTION DELIVERY OR SUPPORT OF THIS SOFTWARE WILL IN NO EVENT BE LIABLE FOR DIRECT INDIRECT SPECIAL CONSEQUENTIAL OR INCIDENTAL DAMAGES RESULTING FROM ANY DEFECT ERROR OR OMISSION IN THE DISKETTE OR SOFT...

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