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Attenuation measuring device esp. for reeled optical cable - stretches cable over widely spaced rollers while attenuation is measured in conjunction with tension and extension
Attenuation measuring device esp. for reeled optical cable - stretches cable over widely spaced rollers while attenuation is measured in conjunction with tension and extension
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机译:衰减测量装置,特别是用于绕制的光缆-将光缆延伸到宽间隔的滚子上,同时结合张力和伸长量测衰减
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摘要
The cable (20) is guided over freely rotatable rollers (10) whose radii are less thant he min. allowable at a 180 deg. bend. The arc of contact with each roller subtends less than 60 deg. while the spacing between the axes (11-19) of the rollers is at least 10 times as great. Tension applied by a motorised spindle (24) is measured (25) and recorded (27) together with the length (26) while the attenuation between the ends (21, 22) of the cable is measured (28). USE/ADVANTAGE - E.g. for air cables, esp. in conditions of varying temp. and longitudinal stretching, measurement errors w.r.t. actual operational behaviour are reduced.
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