Anyone come across this? It seems to only happen periodically. When taking a shot on a 360 prism(not sure if we have tried standard prisms as well) the data gets stored with 0 distance from the station and so the point is stored as being directly over the top of the control point we are set on. Once it occurs a reset of all equipment(including the DC) sometimes fixes the issue.
Thanks for the help!
-Scott
Must be a Sokkia thing. I remember a Set 2C doing the same thing in 1990 or so. We never figured out what caused it or how to avoid it.
Could be a phase thing as well.
Phase shift EDM's work with multiple waves to calculate the distance by comparing the shifts between the waves.
However, if you are at the end of the longest wave, then it starts at 0 again.
The EDM ALC setting could have some minor influence as well I think in a rare occasion/combination.
If it happens again, make sure to check at around which distance this anomaly occurs..
Greetings,
Floris.
Ditto
Same mystery problem cropped up with a Set 4CII I used to know. Could never figure out why it happened or when it was going to do it.
> However, if you are at the end of the longest wave, then it starts at 0 again.
I don't think this is the cause for two reasons:
1. In order to get a zero distance recorded, you'd have to be exactly at the end of the wave, which is unlikely to happen at all, let alone multiple times during a topo survey.
2. We encountered the problem at random distances, usually less than 1000 feet. As I recall the old Japanese EDMs used a 2km wavelength.
(I remember shooting a few hundred feet over 13,000 once with a Lietz Red 1. At first I thought it was a bad reading, because it only showed the fraction left after subtracting a couple of 2km wavelengths, but once we corrected for that the traverse closed nicely.)
Have you contacted your local dealer for support?