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英语翻译The SCAV?query returns the value of point j of the mean

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英语翻译
The SCAV?query returns the value of point j of the mean graph or scan point j.J has the range of
1 to 250.This query returns the illegal value 9E20 if the stripchart is blank,has not reached point j,or
the scan has not reached point j.One way to read back every point of a scan is to continually send
the command SCAV?j until a legal value results and then move on to the next point.The number
returned is a floating point number with up to 16 digits of precision.
运行命令 SCAV?,查询返回图表平均值J哦或扫描点的J值,J 的取值范围是1-250,如果带状图示空白,没有达到J点值或没有扫描到J点,查询将返回错误值 9E20.读回每一个扫描点值的方法是不断地发送 SCAV?j命令,直到获得一个正确结果,然后在移到下一点.返回的数值是16位精度的的浮点数.