DC Signal IN的意思|示意

MSP430F449 has abundant internal resource, but itself 12 b A/DC negative pole reference voltage can′t be lower than 0V. It has brought the difficulty in measuring alternating current signal.

MSP430F449单片机内部资源丰富，但是他本身自带的12位A/DC参考电压中的负极最低不能小于0 V电压，对于交流信号的测量带来了困难。

For the problem of signal current bypass with track circuit of rolling stock depot in DC electric traction sections, the paper provides measures to prevent it.

针对直流电力牵引区段车辆段轨道电路中的信号电流存在的迂回问题，提出了在工程设计中的防范措施。

Some manufacturers, while using the 5-Pin XLR, decided to use fourth and fifth pins for DC power, not signal data as specified in the standard.

有些厂家虽然使用了5针XLR，但是他们却利用引脚4和引脚5来传输直流电，而本标准并没有这样规定。

For example, in a system for measuring small DC voltages, the contact potential of the switch will be added to the signal.

例如，在测量小直流电压的系统中，开关的接触电势将会被叠加到信号上。

The decaying DC component in the sampling signal will bring errors to the full-wave Fourier algorithm, which is derived with periodic signal.

全波傅氏算法是基于周期信号推导出来的，当采样信号中含有衰减直流分量时，将会产生误差。

The real-time signal acquisition with AC-sampling technology overcomes the short comings of bad stability and big error in DC-sampling.

由于采用交流采样技术，实现了信号的实时采集，克服了直流采样误差大和稳定性差的缺点。