81624B规格是850还是81623B是正确的选择？

我是光波领域的新手。
我看到81624B用于850 nm。
当我查看规格时，我发现波长范围覆盖850 nm，但规格似乎不支持这一点。
81624B规格是850还是81623B是正确的选择？
谢谢



     以下为原文

  I am new to the lightwave area. I have seen the 81624B being used at 850 nm. When I look at the specifications, I see that the wavelength range covers 850 nm, but the specs don't appear to support this. Is the 81624B spec'd for 850 or would the 81623B be the right choice? Thanks