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en:ovi40build:displaybuild [25.04.2018 07:26]
df9ts
en:ovi40build:displaybuild [25.04.2018 07:28]
df9ts [Display Calibration - mandatory at first bring-up] included post of Slawek
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 <​bootnote important>​It is mandatory to do a display calibration at first bring-up / switch on of the touch screen display. Only after calibration will the touch screen work with UHSDR.</​bootnote>​. The calibration is required initially. No later calibration needed during operation. <​bootnote important>​It is mandatory to do a display calibration at first bring-up / switch on of the touch screen display. Only after calibration will the touch screen work with UHSDR.</​bootnote>​. The calibration is required initially. No later calibration needed during operation.
  
-Start the calibration by touching the touch screen with a finger **before** ​ switching on the UI board V1.8. Keep touching the touch screen until the service menu sis displayed. Now release the finger from the touch screen and follow instructions on the screen carefully. After calibration is finished please ​save the calibration ​by long-pressing the "​menu" ​button ​switch on the UI board, ​then long-press "​power" ​button.+Start the calibration by touching the touch screen with a finger **before** ​ switching on the UI board V1.8. Keep touching the touch screen until the service menu sis displayed. Now release the finger from the touch screen and follow instructions on the screen carefully. After calibration is finished please ​leave the test screen ​by pressing the POWER button ​and then, when firmware start to work, please ​long press MENU (F1) button ​to save the calibration settings (the MENU should be marked with * and different colour, which means you have not saved settings). 
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 +Sometimes calibration fails and there is need to repeat it. That's why there is a test screen with drawing dots (you can use also the blue test screen to check if it works). You have to play with it to be familiar. If the accuracy is not perfect (it should be less than 1mm) you have to change the calibration method or have issue with the panel itself. One preferred method for calibration is to use plastic stylus or soft pencil (gentle), but you can do it with nail with good results.
  
 ==== Mechanical fixing of the display board onto the UI board ==== ==== Mechanical fixing of the display board onto the UI board ====