另一方面，为了兼容其他那些工作输入信号电压不为0的器件，如模数-数模转换器，信号电平也许要做平移。
On the other hand, the signal may require level shifting in order to be compatible with the input of other devices (such as ADCs) that are not designed to operate at 0v input.
任一变化在励磁电压的结果是由模数转换器在模拟输入电压。
Any change in the excitation voltage results is a change in the analog input voltage seen by the ADC.
就模拟输入而言，使模数转换器不能区别其变化的超范围的绝对电压值。超载值对于正输入和负输入可能不同。
For analog inputs, any absolute voltage value above which the analog-to - digital converter cannot distinguish a change. The overload value can be different for plus and minus inputs.
信号采集板有四路信号输入，完成信号调理以及模数转换功能；
There is a four-way signal input on the signal acquisition circuit board, which implements signal conditioning and analog-digital conversion.
图1示意性地示出基于开关电容器的模数转换器的输入级。
FIG. 1 schematically illustrates the input stage of a switched capacitor analog to digital converter.
当输入信号动态范围比较大时，系统性能通常被高精度模数转换器(adc)所限制。
When the input signal has a wide dynamic range, the system throughput is limited by the conversion rate of the high-resolution analog-to-digital converters (ADC).
系统主要以89c5 1单片机为核心，采用模数转换、驱动显示、位置开关输入、控制键盘输入等硬件电路模块组成。
The system is mainly composed of hardware circuit module such as 89c51 single-chip computer, modulus conversion, driving display, positional switch inputting, controlling key etc.
本例展示了如何采集单个通道的模拟输入，通过模数转换器(adc)将模拟量转化为数据，并通过DMA把数据转移到内存中。
This example shows how to capture a single channel analog inputs, analog (ADC) will be converted to analog data and the data transferred by DMA to memory.
为使流量计输出信号与模数转换器输入信号相匹配，在输入通道中设计了I／V转换电路，A／D转换采用串口转换器TLC0834。
In input channel, I/V transfer circuit was designed to match the output signal of flow-meter and the input signal of A/D chip-TLC0834.
为使流量计输出信号与模数转换器输入信号相匹配，在输入通道中设计了I／V转换电路，A／D转换采用串口转换器TLC0834。
In input channel, I/V transfer circuit was designed to match the output signal of flow-meter and the input signal of A/D chip-TLC0834.
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