Sinn EZM 9 TESTAF, Руководство пользователя, Страница: 14 / 31

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the list of technical and functional specifications describe precisely and
unambiguously the time measurement requirements during flight in the
following categories.
1. Functionality
• required functions during flights operating under visual and/or
instrument flight rules
• readability in daylight and in darkness
• good operability
• accuracy and power reserve
2. Resistance to external stress
• absolute and cyclical ambient pressure changes
• operative temperature range and rapid temperature change
• shock and impact resistance, g-forces and vibration
• resistance to water and other aviation fluids
• effects of magnetic fields on the watch
3. Safety and compatibility with other instruments
• effects of the watch’s magnetic signature on avionics
• avoidance of reflections and dazzle
• appropriate form
• secure strap fastening
A description and photos of the tests can be found at www.testaf.org.