Test procedures Tensile performance Examines the behaviour of the attenuation and/or the fiber elonga- tion strain as a function of the load on a cable design which may occur during installation (short term load or maximum specified load for the cable) and operation (long term load). This method is intended to be non-destructive. Standards: IEC 60794-1-21 E1 (former IEC 60794-1-2 E1) Crush resistance Examines the ability of an optical fiber cable to withstand crushing (transverse compression load) for long term (operation) and for short term (installation) loads. The load is uniformly applied on the cable sample. Standards: IEC 60794-1-21 E3A (former IEC 60794-1-21 E3A) Impact Examines the ability of an optical fiber cable to withstand impacts such as dropping of tools or stones. Standards: IEC 60794-1-21 E4 (former IEC 60794-1-2 E4) Repeated bending Examines the ability of an optical fiber cable to withstand repeated bending. The stress occurs by repeated bending the cable back and forth by 90º. Standards: IEC 60794-1-21 E6 (former IEC 60794-1-2 E6) 26
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