测量绝缘电阻的例子包括测量印制板上走线之间的通路，或多芯电缆中导线之间的电阻。
Examples of insulation resistance measurements include measuring the path be tween traces on a printed circuit board or the resistance between conductors in a multi-conductor cable.
由于IR测量往往涉及到多芯导线，所以通常需要一套切换系统来将皮安计和源切换至测试电路中的所有导线。
Ir measurements often involve multiple conductors, so a switching system is often required to switch the picoammeter and the source to all the conductors in the test circuit.
补偿导线的线芯绝缘厚度，护套厚度及最大外径。
Insulation thickness, sheath thickness and maximum overall diameter.
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