| 摘要 |
<p>PROBLEM TO BE SOLVED: To make performable measurement without affecting an on-line state even during communications concerning a resistance measuring device capable of specifying both the cause of oxide film wire breakage which has been conventionally difficult to find and a causal section when an on-line stop and error occur. SOLUTION: By inserting a choke coil 3 in a conventional resistance measuring device 1, it is possible to measure a synthetic resistance without the need for breaking the wire of a communication line 7 and specify a section of oxide film wire breakage in this high-impedance measuring device.</p> |
