甚至现代的方法(用这种方法扫描时，被测人员要在一块玻璃板上转动手指)，往往需要对每根指头采集多次，才能获得一个可用的指纹。
Even the modern approach, in which the subject's finger is rolled over a glass plate for scanning, often requires several attempts per finger to get a usable print.
为了完成这项测试，你需要将一个金属板放置到被测电路的上面。
To perform this test, you need a fixture that positions a metal plate over the circuit under test.
前端采集插头接收测试数据，切换继电器电路传递被测电路板信号。
Testing data is received with data acquisition plug, signal from tested circuit board is transferred by circuit of switch relay.
前端采集插头接收测试数据，切换继电器电路传递被测电路板信号。
Testing data is received with data acquisition plug, signal from tested circuit board is transferred by circuit of switch relay.
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