[time-nuts] Lea-6T Math error?

Bob Stewart bob at evoria.net
Fri Apr 15 04:27:52 UTC 2016


I hope I haven't posted about this before, but it's something that's bugged me for awhile.  When I run a survey-in on an LEA-6T, the CFG-TMODE2->fixedPosAcc value seems to be wrong.  For instance, I ran a survey today and told it to run for 32,400 seconds and reach at least 350mm accuracy.  When it finished, TIM-SVIM reported it had run 38,126 seconds with a mean 3D std deviation of 350mm.  OK, so far.  So, I go look in the CFG-TMODE2 structure and it reports 122mm.  That seems a bit odd, but OK.  And then I squared 350, and came up with 122500.  It appears that instead of just moving the 350mm value over to the TMODE structure, they've squared it and divided it by 1000.  I've noticed this happening on at least 2 versions of the 6T.  I suppose I should do the same test on the M8T.

Bob



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