The current should be measured after a sufficient settling time to allow the switching transients to decay and the current to stabilize.
应该等待足够的时间，使开关瞬态信号衰减，电流达到稳定，然后再进行测量。
Selectivity: The relay must not respond to abnormal, but harmless, system conditions such as switching transients or sudden changes in load.
选择性：继电器对诸如系统瞬间切换或负载突变之类的无害的异常情况不作反应。
Close each channel individually and measure the offset current after allowing the switching transients to decay and the current to stabilize.
分别关闭每个通道，并等待切换瞬态小时且电流稳定后，测量偏移电流。
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