Hi guys just seeing if anybody can help me with this. I'm setting up and backsighting with S6 robot and Doug check shot after station set-up is complete. Vertical is great. Then when I check into an existing hub it is consistently .05 off vertically. What would cause this since check shots are very tight on DiNi leveled adjusted control.
Well its a hub, how long is the hub? Is it in gravel or just the ground? When the ground gets wet or dries out, I can see a hub moving 0.05. Also maybe they pushed down on the hub when they set the rod on it or the point went in deeper one of the times.
Scott Ellis, post: 442727, member: 7154 wrote: Well its a hub, how long is the hub? Is it in gravel or just the ground? When the ground gets wet or dries out, I can see a hub moving 0.05. Also maybe they pushed down on the hub when they set the rod on it or the point went in deeper one of the times.
These elevations on hubs were set for stringline and are all consistently off .05' vertically from elevation checks using same control and an automatic level
JoelH, post: 442729, member: 12960 wrote: These elevations on hubs were set for stringline and are all consistently off .05' vertically from elevation checks using same control and an automatic level
How far are you taking a shot on the hubs? Also do you have the correct rod height for backside and side shots?
Have you tried collimating the S6?
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Curiously the shop I'm working in now is also constantly chasing a half tenth on control networks. Myself, I'm thinking it has something to do with the machines being painted yellow instead of green.
Shits
Scott Ellis, post: 442731, member: 7154 wrote: How far are you taking a shot on the hubs? Also do you have the correct rod height for backside and side shots?
Shots on hubs are all under 350'. I'm using target 1 in DC with target height of 2M and tracking prism
sirveyr, post: 442732, member: 6680 wrote: Have you tried collimating the S6?
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I have not tried collimation yet
JoelH, post: 442736, member: 12960 wrote: I have not tried collimation yet
That should fix it for now. Obviously, I would suggest taking it to your local dealer if this problem persists, which it sounds like it has.
What prism are you using? A standard -30 mm is more accurate than a 360 prism.
Are you capturing these elevations in tracking mode or standard mode?
You can also try capturing the data direct and reversed. See if the vertical error persists.
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JoelH, post: 442734, member: 12960 wrote: I'm using target 1 in DC with target height of 2M and tracking prism
2M measured to what? The target height with a multitrack prism is only correct if you're using a Trimble pole.
Turn the active tracking off and just use passive.
Lee D, post: 442745, member: 7971 wrote: 2M measured to what? The target height with a multitrack prism is only correct if you're using a Trimble pole.
Yes it is a Trimble pole
eddycreek, post: 442746, member: 501 wrote: Turn the active tracking off and just use passive.
And use like a traditional total station?
sirveyr, post: 442737, member: 6680 wrote: That should fix it for now. Obviously, I would suggest taking it to your local dealer if this problem persists, which it sounds like it has.
What prism are you using? A standard -30 mm is more accurate than a 360 prism.
Are you capturing these elevations in tracking mode or standard mode?
You can also try capturing the data direct and reversed. See if the vertical error persists.
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Elevations are captured in tracking mode. Just to refresh my memory, what is the typical procedure for a collimation?
Check the help file on the controller in Access, the software will guide you!
Chr
christ lambrecht, post: 442758, member: 284 wrote: Check the help file on the controller in Access, the software will guide you!
Chr
Cannot find help file in access
eddycreek, post: 442746, member: 501 wrote: Turn the active tracking off and just use passive.
I'd definitely do that as a check, might tell you where the problem lies. Also if you sight the prism passively and then turn the tracking on the vertical angle shouldn't change.
Instrument button on the lower right of the screen.
Check & Adjust.
It has a series of adjustment routines, the first is the compensator which is the easiest and should be done often. Then there are collimation routines. Do it at least ten times direct and ten times reversed to a remote target (at least 100 meters away). The trunion tilt requires a high target at least 50' away, you can use something definite on a power pole. It can be done on the little screen on the instrument but it's a lot easier to use Access.
Handle must be on, TCU off the instrument.
From the initial countdown screen that you get when you turn on the instrument, go into the electronic level screen, then select the button that takes you to adjustments. Look for vertical collimation and follow the prompts. Googling "Trimble S6 vertical collimation will also give several good results.
I bet it's something simpler than collimation. It could be as simple as, are you sure your pole is 2 meters? I mean have you taken a pocket tape and actually measured it? Maybe the tip is shorter or the prism isn't standard height.
