这种偏移电流的典型来源是绝缘子和电缆。
Typical sources of such offset currents are insulators and cables.
商业上有专门设计的开关卡，其偏移电流非常小。
Scanner CARDS designed to minimize offset current are commercially available.
偏移电流是开关卡产生的杂散电流(即使没有信号时)。
Offset current is a spurious current generated by a switching card even though no signals are applied.
对于切换小电流来说，开关卡的偏移电流指标应该尽可能小。
The offset current specification of the switch card should be as low as possible for switching low current.
如果偏移电流相对稳定，则可以从随后的测量值中减去该值。
If the offset current is relatively constant, this value can then be subtracted from subsequent measurements.
偏移电流是指在未施加信号时，被测电流在输出上产生的电流。
Offset current is the current generated by the circuit as measured at the output when no signal is applied.
通过高阻装置的任何偏移电流都会导致装置两端出现不希望的电压。
Any offset current flowing through a high impedance device will cause an unwanted voltage to appear across the device.
为了获得准确的结果，偏移电流技术指标必须小于被切换的信号电流。
To achieve accurate results, the offset current specification must be smaller than the signal current that is being switched.
在通过某个通道进行测量时，则可从测量读数中减去该通道的偏移电流。
This is done by subtracting the offset current for a given channel from subsequent measurements made via that channel.
若要测量开关卡的偏移电流，请将卡的输出连接到一台皮安计或静电计。
To measure the offset of a switch card, connect the output of the card to a pico ammeter or electrometer.
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。
Close each channel individually and measure the offset current after allowing the switching transients to decay and the current to stabilize.
和接触电势一样，由于偏移电流而引起的小电流信号测量不确定度亦可计算获得。
As with the contact potential, the uncertainty added to a small current signal by the offset current can be calculated.
在测量小电流时，如果偏移电流的幅值与被测小电流相当，偏移电流就尤其明显。
Offset current is especially significant when measuring low currents if the magnitude of the offset is comparable to the low current being measured.
然而，偏移电流和漏泄电流是最常见的干扰类型，并在这部分末尾进行了更详尽的说明。
However, offset current and leakage current are the types of interference most frequently encountered and are explained further at the end of this section.
切换和测量具有高内阻的电压源会受各种误差的影响，包括偏移电流、寄生漏泄通路，以及静电干扰。
Switching and measuring voltage sources with high internal impedance are subject to a number of errors, including offset currents, stray leakage paths, and electrostatic interference.
一旦将矩阵卡、源和测量装置组合连接在一起之后，就可能希望测量不同通路的偏移电流，从而来表征系统。
Once a given combination of matrix CARDS, sourcing, and measuring devices is put together, it may be desirable to measure the offset current for various pathways to characterize the system.
如果不同通道的偏移电流是比较稳定的，则可在控制计算机中保存一个修正因子，从而实现更准确地小电流测量。
If the offset currents for the different channels are reasonably stable, a correction factor can be stored in the control computer to allow more accurate low current measurements.
这种缺乏静态，直流偏移电流输出变压器的核心手段，可更小，因为它不需要空气间隙，以防止核心饱和从静态直流偏移电流。
This lack of static, DC offset current in the output transformer means that the core can be made smaller, because it requires no air gap to prevent core saturation from the static DC offset current.
仪器内部电路和内部的偏移电压会在仪器的输入端引起输入偏置电流。
The input bias current flows at the instrument input due to internal instrument circuitry and the internal bias voltage.
交流电流源或电压源。可指定直流偏移。
直流侧电流扰动反映到交流定子侧，也将发生频率偏移。
And the resulted AC current on the DC side will have the similar frequency shift when transfers to the stator of the generator.
偏移特性阻抗继电器常用于小电流或大电流接地系统中作为输电线路距离保护的测量元件。
LZ-22 partial impedance relay usually used as measuring element on distance protection of the line at small or big current power system.
切换电路提供在至少两个偏移采样时刻期间的第一相电流波形，且提供在参考采样时刻期间的第二相电流波 形。
The switching circuitry provides the first phase current waveform during at least two offset sampling instants, and provides the second phase current waveform during a reference sampling instant.
否则，传感器电容和放大器的输入偏置电流电阻，对仪表放大器的信号施加相位偏移。
Otherwise, the sensor's capacitance and the amplifier's input-bias-current resistors impose a phase shift on the signal you apply to the instrumentation amplifier.
否则，传感器电容和放大器的输入偏置电流电阻，对仪表放大器的信号施加相位偏移。
Otherwise, the sensor's capacitance and the amplifier's input-bias-current resistors impose a phase shift on the signal you apply to the instrumentation amplifier.
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