When using the device, defective (dead) pixels may appear on the microbolometer. These are bright or dark points of a constant brightness that are visible on the image.
Defective pixels on the microbolometer can increase in size relative to the digital-zoom power.
Helion 2 XP thermal monoculars allow the user to remove any defective pixels on the display, as well as cancel removal, via the device’s firmware.
- Press and hold the M (9) button to enter the main menu.
- Use the UP (10) / DOWN (8) buttons to select the Defective Pixel Repair menu item.
- Press briefly the M (9) to open the submenu.
- Select the Defective Pixel Repair option by briefly pressing the M (9) button.
- A marker (H) appears on the left side of the display.
- On the right side of the display appears a "magnifying glass" (G) - a magnified image in the frame with a fixed cross , designed for easier detection of a defective pixel and to match the pixel with the marker, and horizontal and vertical arrows for X and Y axes (I) showing the marker's movement.
- With a short press of the UP (10) / DOWN (8) buttons move the marker to align it with a defective pixel.
- Switch the direction of the marker from horizontal to vertical and vice versa with a short press of the М (9) button.
- Align the defective pixel with the fixed cross in the frame - the pixel should disappear.
- Delete the defective pixel with a short press of the REC (7).
- Once the pixel has been successfully deleted an "OK" message will briefly appear on the screen.
- You can then delete another defective pixel by moving the marker across the display.
- Exit the Defective Pixel Repair submenu with a long press of the М (9).
Warning! The display of a thermal imager may have 1- 2 pixels represented as bright white or coloured (blue, red) dots which cannot be deleted and are not a defect.