Posted By Georges Cornelissen on 3/18/2010 at 8:39 PM

Hello,

I am working right now with a rental, a Trimble S3 robot and TSC2 version 12.45. Construction job, piles layout. Day after day, the job is the same, the procedure is the same.

Here's what happened Yesterday, and we don't understand what could have caused it:

Set up the station/backsight (150m), good.
Do a check shot on another control (130m), good.
Do a check on a previously placed nail (80m) on a left side of a drill, good.
Walk to the right side of the drill, start layout.
Layout ~10 points over a 40m distance, check backsight, out by 10 centimetres!(out by 2' 27") 

No warning from the instrument about going off level. The instrument did get off-level by 30".

What could have caused this? I do not have a lot of experience with robots, maybe it's a user error. 

Could the drill have something to do with this? 
Did the servo of the robot simply "skip a beat"?

Georges

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