2. Performance requirements

Security The X-ray equipment shall provide for the necessary detection, measured in terms of resolution, penetration and discrimination, to ensure that prohibited articles are not carried on board aircraft. Tests Performance shall be assessed using appropriate test procedures. 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.