Defective Pixel Repair

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 thermal image.

Defective pixels on the microbolometer can increase in size relative to the digital-zoom power.

The Thermion Duo thermal riflescope allows the user to remove any defective pixels on the display, as well as cancel removal, via the device’s firmware.

Step 1. Enter the menu to fix the defective pixels

1. Select the thermal imaging mode for the main window by briefly pressing the MODE button (3).
2. Press and hold the controller button (6) to enter the main menu.
3. Rotate the controller ring (6) to select the Defective Pixel Repair  menu item.
4. Press the controller button (6) to open the submenu.
5. Press the controller button (6) briefly to select the icon .

Step 2. Select the defective pixel

1. A marker  will appear on the centre of the display. A “magnifying glass” will appear on the right side of the display — a rectangle with an enlarged view of the marker for precise pixel selection — and marker coordinates under the “magnifying glass” .
2. Rotate the controller ring (6) to move the marker to align its center with the defective pixel.
3. Press the controller button (6) shortly to switch the marker direction from the horizontal to the vertical and vice versa.
4. Rotate the controller ring (6) to align the defective pixel with the fixed cross in the frame – the pixel should disappear.

Step 3. Remove the defective pixel

1. Delete the defective pixel with a short press of the ON/OFF (14) button.
2. Where the pixel has been successfully deleted, the OK message will appear on the screen for a short time.
3. Then, by moving the marker across the display, you can delete the next defective pixel.
4. Press and hold the controller button (6) to exit the Defective Pixel Repair function.