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TIDA-00554 光谱开发模块Digital resolution参数设置和scan configurations选择

Other Parts Discussed in Thread: TIDA-00554

你好,请问TIDA-00554 光谱开发模块在测量固体粉末时,Digital resolution参数设置如何选择最合适的值?用户手册中提到,Digital resolution的值至少采用大于2倍的过采样率进行计算:

【In general, set this resolution to oversample at least twice of the desired full width half maximum (FWHM) desired. For example, for a 15 nm FWHM between 900 and 1700 nm, use 2 * (1700 - 900) / 15 ≥ 107 wavelength points】

但是指导手册上给的参数配置示例的过采样率为2,实际中是否可以采用更高的过采样率值,比如3或是4?若采用3/4倍过采样率进行采样检测,是否会造成数据过拟合或是导致数据失真?

另,在选择scan configurations 时,有两种模式 Hadamard & Column,同样的波长范围(比如900-1700),同样的检测条件,为什么 Column 的响应强度高于 Hadamard?