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Cedar Rapids, Iowa | The convergence number is just the threshold between the primary solution (XP/HP/G2) and the backup solution (usually VBS). When the receiver boots up, the high accuracy solution will not have much confidence in the accuracy it reports, so it say something like plus or minus 5 feet. As it runs and accuracy increases, the convergence number will go down. Being able to set this number gives you some feedback about if the accuracy is acceptable for your use or not.
Setting a higher convergence number will put you on the higher accuracy solution sooner, even though it won't be all the way to its optimum accuracy. This will let you engage auto-steer sooner, but you probably shouldn't set the A-B line for a few more minutes. There will be more position drift while it is converging than when it is up to optimum.
If your interest is in section control, set the convergence number as high as you can go. I use 39 inches on the Trimble 262. OmniStar XP/HP/G2 that is only converged to 39 inches will still mesh better with a fully converged solution (the rest of the field) than OmniStar VBS will. Ideally you would wait for accurate data, but if the ground is good, our planter is rolling whether the technology is working or not.
-Lance
Edited by mx270a 7/7/2011 23:32
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Omnistar ?
