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校准电流,,必须在一个大于0的电流下吗?

Other Parts Discussed in Thread: BQSTUDIO

第一、

充放电MOS 打开后,,,,PACK 端电压正常,,,没有接负载的情况下,,,有个很小的电流存在,  之前未做过电流校准

想通过校准的方法,把它改成0,,,,但是出现了上面的错误。。请问,校准电流,,需要一个大于0 的值吗?

第二、

我看了slua734a_bq40zxx Manufacture, Production, and Calibration.pdf 

中,,电流校准包含三部分,,,

1、CC offset        ------Apply a known current of 0 mA, and ensure no current is flowing through 采样电阻

2、Board offset------------------Apply a known current of 0 mA, and ensure no current is flowing through 采样电阻

这两项都提到了,,由于硬件的提升,这两项不需要校准了?能说一下,这两项校准的是什么东西吗,在bqStudio中没找到对应项

Due to hardware improvements in this device, CC Offset calibration is not necessary. Only
run the CC Offset Calibration procedure if current is observed when no current should be
p

3、CC Gain/Capacity Gain Calibration    --------------Apply a known current (typically 1 A to 2 A)

请问上图中,,,bqStudio 中的电流校准对应的是,,,手册中提到的三种电流校准的哪一项呢?

谢谢!