Firstduck Posted August 16, 2014 Report Share Posted August 16, 2014 Hi, my english ist noch the best, so I hope you unterstand my question. I use the variable "03OC" in a Excel-VBA- project to get the vertical speed at touchdown. In an other thread I read that the correct value for 59999 is -12,4 ft./min. No problem, because 59999/256 x3,2 / 60 is 12,4 ft./min. In another flight I get the value 4294967036 and FSInterrogate converts it to -199,92 ft./min. Now I am not able to calculate this result. Can anyone give me an advice how to convert the values? Thanks a lot Andre Link to comment Share on other sites More sharing options...
Pete Dowson Posted August 17, 2014 Report Share Posted August 17, 2014 I read that the correct value for 59999 is -12,4 ft./min. No problem, because 59999/256 x3,2 / 60 is 12,4 ft./min. Actually 59999 is +12.4 not -12.4, meaning it was on the bounce up off the runway at the time it was recorded. In another flight I get the value 4294967036 and FSInterrogate converts it to -199,92 ft./min. Now I am not able to calculate this result. You must read that offset as a SIGNED value. 4294967036 is actually hexadecimal FFFFFEFC which is the 32-bit representation of decimal -260. Using that will give you the -199.92 value. Pete Link to comment Share on other sites More sharing options...
Firstduck Posted August 17, 2014 Author Report Share Posted August 17, 2014 Thanks Pete, now it works fine. :razz: Link to comment Share on other sites More sharing options...
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