AF_LINE_TESTER

Published:2009/7/11 2:04:00 Author:May | From:SeekIC

Gives complete check of shielded twisted-pair cablein one operation, indicating short-circuits between conductors and providing positive continuity check of each conductor. Tester using polarity-sensitive bicolor LEDs is connected to one end of cable under test, and two-diode plug is patched in at other end. If cable is good, only green LEDs come on. If a conductor in cable is open, oneor both green LEDs will be off. One or both red LEDs will light for short between any combination of conductors or if cable is wired incorrectly. Signal diode types are not criticaL-W. L. Mahood, Testerfor Balanced Audio Lines, EDN Magazine, April 5, 1974, p 80 and 82.



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