> This may have been settled before, but it seems that the implication is a deliberate action taken to lower the quality of angular measure. Is th...
> Does another instrument of the same model produce essentially the same pattern?Hello Bill,We have another instrument from exactly the same instru...
> > It's highly unlikely that you could access that software (although I'm not sure I've ever seen ANY discussion, here or elsewhere, on what OS...
> I am surprised at the regular pattern you are finding. Comments from instrument manufacturers would be interesting - and appreciated. Hello Dave...
> An instrument that is well cared for and well adjusted can pull that off, as you say, under ideal conditions.Hello A Harris,I'm not sure I agree ...
Pictures for you.This page suggests a size of the CCD of 3.2mm. That's why I was expecting something smaller.Digital angular measurementClearly it's n...
I might have a look tonight after I add the second sine term. I may have run in to the end of what precision is achievable, and what effects are detec...
Pictures for you.> Which raises the question of what, if any, effects there are from the two circle readers not being exactly diametrically opposit...
Pictures for you.Hello rfc,The 15 minutes included reassembly actually; I didn't have it open for long.Probably of interest, as the diode and CCD are ...
Pictures for you.The diode is (in the photo) below the CCD array in the second picture. It is a red diode (to minimise scattering?) according to anoth...
Pictures for you.Hello Kent,Here is a picture of the system in a TCA1105. I checked it. Light gets to first mirror clear of the circle, then off the s...
I'll be quite surprised if the light passes through the circle twice. I think the diagram isn't clear enough. I'm guessing it's a packaging thing, and...
Hello Charlie,If you can't export RINEX from a VIVA controller, you certainly can export RINEX from Leica Geo Office. Alternatively I think that TEQC ...
Hello Bill,Here is the residuals from 0-360* with a function of sin(8*A+40)*3.1" removed. The standard deviation of residuals after applying the funct...
> > The paper doesn't mention using the net light level for measurement. > > How do you interpret this bit?> > "Light falling throug...
Hello Bill,If you read the description of the angle reading mechanism, you'll find it doesn't use the net value of light on the whole of the CCD array...
> If, as would appear, the Leica circle varies in its net masking properties as the sectors with binary numbers that have more zeros than ones code...
> > Did you by any chance find a better description of the circle design and reading method than the one given in the following paper by some Cr...