Back to learning SurvCE (breather from Magnet).
I'm practicing Set Collection.
In the "Configure", "Sets" screen, I have "Backsight (Read D&R)" checked.
I also have the set order as BD-FD/FR-BR.
But upon reading the Backsight, it immediately asks me to point to the BS in the Reverse face. If I do, it then gives me:
"Warning: Vertical angles to Pt-BS-1A differ by 179-58-45. Tolerance set to 0-00-30. Continue?"
Is this a zenith angle setting I've missed, either in the gun or in the software? It smells suspiciously like something similar I ran into using Magnet.
You need to set the vertical index in your total station. You can continue and survCE will average the pointings but you will likely find yourself answerin this question often until you set the vertical index. The 30 seconds is a user defined tolerance that was exceeded by the 1'15" difference you had in face 1 compared to face 2.
> You need to set the vertical index in your total station.
That might be the case, but I'm not sure it's the whole problem. As I recall, whenever I get a message like this it means my robot got confused about which face it was in; SurvCE (v1.67) is expecting a direct zenith and the inverted zenith makes it look like the angle was out by almost 180°.
If you uncheck the D/R backsight box, does it behave correctly?
> > You need to set the vertical index in your total station.
>
> That might be the case, but I'm not sure it's the whole problem. As I recall, whenever I get a message like this it means my robot got confused about which face it was in; SurvCE (v1.67) is expecting a direct zenith and the inverted zenith makes it look like the angle was out by almost 180°.
>
> If you uncheck the D/R backsight box, does it behave correctly?
That sounds very close to what's happening. When plunging as directed, the reading is off by 180 degrees (plus or minus small change). If I uncheck the D/R backsight box, it behaves correctly (in that it does not ask me to measure the BS in the opposite face), but it doesn't appear to prompt to take sets at all. It just prompts to measure the next point.
The version I'm using is v2.07. If this is a quirk of the software that has no fix, as long as I can manually run sets (and keep track of what I'm doing), I guess I'm good with that.
The set order affects Set Collection. The backsight setting is for regular store points. These settings affect two separate routines. If you only want one set, under sets, check the backsight and sideshot. It will require a d and r for backsight and a d and r for sideshot and mean them. If you want to accumulate several sets use set collection. The set order will affect this.
> The set order affects Set Collection. The backsight setting is for regular store points. These settings affect two separate routines. If you only want one set, under sets, check the backsight and sideshot. It will require a d and r for backsight and a d and r for sideshot and mean them. If you want to accumulate several sets use set collection. The set order will affect this.
I see that. The options are slightly different: Backsight, Traverse, Topography, Resection and Stakeout.
I checked Backsight, Traverse and Topography.
Shot the Backsight in Direct; prompts for Reverse. Shot in Reverse; error message; continue. Results:
[pre]
Type Setup Point Horz. Vertical
BD 1 1A 0-00-00 5-05-00
BR 1 1A 180-17-25 174-55-30
Backsight Means OC1-BS1A
Zenith High Low Zen Diff
95-04-45 185-04-30 5-05-00 179-55-30
[/pre]
It looks like what it's doing what Jim Frame recalls. Or was I supposed to reset zero after plunging but before taking the measurement? More confused than ever now, lol.
I might be confusing myself even more
> Type Setup Point Horz. Vertical
> BD 1 1A 0-00-00 5-05-00
> BR 1 1A 180-17-25 174-55-30
>
I decided to look back at some of my field notes I took doing things manually (no DC), and now I'm really confused. I zero the instrument on the BS, swing and measure the FS, plunge and measure the BS in reverse face...but sometimes I just recorded whatever it was (like 180-00-25, for example); other times I re-zeroed the Backlight in reverse face...ARG! I'm looking for the thread where I asked what folks typically do, and can't find that yet, but...
In the context of SurveCE, when doing BD-FD, FR-BR (a single set),is it correct that the instrument does not zero itself ever on the reverse face measurements, nor should I tell it too. Ditto for multiple sets of measurements? Zero it once on the BS, and record away until done.
If that's the case, then I don't know what the warnings are all about here, because the backlight in reverse face would obviously be near 180-00-00.
I might be confusing myself even more
It's really very simple:
Aim at the BS direct; record the reading
Aim at the FS direct; record the reading
Aim at the FS reverse; record the reading
Aim at the BS reverse; record the reading
One set
It really doesn't matter what you start with; just what the difference comes out.
I thought you said you've used a T2?
I might be confusing myself even more
> It's really very simple:
>
> Aim at the BS direct; record the reading
> Aim at the FS direct; record the reading
> Aim at the FS reverse; record the reading
> Aim at the BS reverse; record the reading
>
> One set
>
> It really doesn't matter what you start with; just what the difference comes out.
>
> I thought you said you've used a T2?
Thanks. No, now I'm using a GTS-255; DC TBD (still trying to decide between SurvCE, xyz fieldworks, and Magnet. Now, I'm really just trying to figure out what the software is doing. It's slightly more opaque than my field book, lol.
