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¿µ¹®Ç¥Áظí The Measurement of Induced Voltages onto Telecommunication Line
Çѱ۳»¿ë¿ä¾à º» Ç¥ÁØÀº Åë½Å ¼±·Î¿¡ Àü·Â¼±¿¡ ÀÇÇØ ¹ß»ýµÇ´Â À¯µµ Àü¾Ð À¯Çüº° ÃøÁ¤ ¹æ¹ýÀ» Á¦½ÃÇÑ´Ù. À¯µµ Àü¾ÐÀº ¼±-´ëÁö Àü¾Ð°ú ¼± °£ Àü¾ÐÀ¸·Î ´ëº°ÇÒ ¼ö À־ À̵鿡 ´ëÇÑ ÃøÁ¤ ¹æ¹ýÀÌ ±â¼úµÈ´Ù. ¿©±â¼­ ¼±-´ëÁö Àü¾ÐÀº »ó½Ã À¯µµ Á¾Àü¾ÐÀ̶ó°íµµ ÇÏ°í º¸Åë ÀâÀ½ Àü¾ÐÀº ¼± °£ ÀâÀ½ Àü¾ÐÀ» ÀǹÌÇÑ´Ù. ¶ÇÇÑ, ±âº»ÀûÀÎ ¿ø¸® ȸ·Î¿Í ÇÔ²² Á¾Àü¾Ð°ú ÀâÀ½ Àü¾ÐÀÇ Æ¯¼º¿¡ ¸Â´Â ÃøÁ¤ ȸ·Î¿¡ ´ëÇÏ¿© ±â¼úÇÑ´Ù. ±×¸®°í ¼±-´ëÁö Àü¾Ð°ú ¼± °£ Àü¾ÐÀÇ µ¿½ÃÀû ÃøÁ¤ ¿ø¸®¿¡ µû¶ó Àû¿ëµÇ´Â ÆòÇüµµ ÃøÁ¤ ¹æ¹ý¿¡ ´ëÇÏ¿© ±â¼úÇÏ°í ÀÖ´Ù.
¿µ¹®³»¿ë¿ä¾à Measurement methods by the type of induced voltages are provided. Measurement methods of common mode voltage and differential mode voltage are described as those voltages are representative in induced voltages. The common mode voltage is also called normal operation induced longitudinal voltage. A noise voltage usually means a voltage between core lines of a pair. Characteristic measurement circuits matched to the properties of longitudinal or noise voltage are presented with a basic principle circuit. The measurement method of longitudinal conversion loss is also described. It is applied according to the simultaneous measurement requirement for a common mode and a secondary line transferred voltage.
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