(c)

Operational requirements The X-ray equipment shall display a complete image of any item fitting into the tunnel. There shall be no corner cut-off. Distortion of the item displayed shall be kept to a minimum. The belt of the machine shall be marked to indicate where bags are to be placed on the belt to obtain optimum images. Contrast sketching: the X-ray equipment shall have the ability to display groups of grey levels (scan a smaller range). The image of any part of the item being screened shall be displayed on the screen for at least 5 seconds. In addition, the operator shall have the ability to stop the belt and, if necessary, reverse the belt when further examination is required. Screen size: the monitor's screen shall be sufficient in size for the operator's comfort (typically 14 inches and above). Screen characteristics: the screen shall be flicker-free and have at least 800 lines (typically 1024 × 1024 pixels, i.e. high-resolution monitors). Where dual monitors are used, one shall be monochrome only. The X-ray equipment shall indicate visually materials it cannot penetrate. The X-ray equipment shall provide organic and inorganic stripping. The systems shall provide automatic threat recognition to facilitate the operator's search.

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Source: EUR-Lex (Cellar) · retrieved 2026-11-10 · Text as adopted (Official Journal); later amendments are not incorporated in this text.