端点精度由片内失调与增益校准来保证，此校准程序可使器件的零电平与满量程误差降至最小。
Endpoint accuracy is ensured by on-chip calibration of offset and gain. This calibration procedure minimizes the part's zero-scale and full-scale errors.
所以，为了尽量降低误差，最好使用尽可能低的电压源量程。
Therefore, it's best to use the lowest possible voltage source range in order to minimize error.
研究了应变仪在使用过程中需要扩大量程时常用的几种方法，同时分析了几种方法的误差。
Some methods are developed to extend the measure bound of the strait gauges in use. And the errors of these methods are analyzed.
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