绝大多数的诊断故障码与计算机的输入电压或信号有关，并且作为一种永久性故障存在一段时间。
Most diagnostic trouble codes relate to the computer input voltages or signals and must exist for a specific period of time to be recognized as a hard fault.
输入模拟信号立即与所有的参考电压通过一串高速比较器进行比较，高速比较器用于产生二进制输出。
The analog signal is compared with all the reference voltages at once by a string of high-speed comparators whose outputs are used to generate the binary output.
放大器输入为电压信号，与光敏二极管产生的光电流信号成比例。调制光柱以断路器同样的频率照射光敏二极管。
The amplifier input is a voltage proportional to the photocurrent signal produced by a photodiode, which is irradiated by a modulated light beam at the same chopper frequency.
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