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Step Two: Levelling 

 

1)  Centre the bubble in the circular level by either shortening the 

Tripod leg closest to the off-centre direction of the bubble or by 
lengthening  the  Tripod  leg  farthest  away  from  the  off-centre 
direction of the bubble.  Adjust one more Tripod leg to centre 
the bubble. 
 
Turn the levelling foot screws while checking the circular level 
until the bubble is centred in the centre circle. 

 

2)  Turn on the OS Series using the Power Button. 

The “Virtual Bubble” is shown on the screen. 

” indicates the bubble in the circular level. 

 

3) 

Centre “

” in the Circular level. 

 

 

4)  Turn the Instrument until the telescope is parallel 

To a line between levelling foot screws A and B. 
 

 

5) 

Set the tilt angle to 0˚ using foot screws A and B for the X direction and levelling screw 
C for the y direction 

Remember Fingers and Thumbs! Always turn A and B in opposite 

directions to half the error on each foot screw.

 

 

6)  Press {ESC} on the instrument keypad to return to observation mode. 

 

7)  If  the  instrument  does  not  automatically  open  the  MAGNET  Field  software,  press 

{PRG} on the instrument keypad. 
 
Select “MAGNET Field” from the listed programs 

The remainder of the Resection setup procedure is completed using MAGNET Field. 

 

 

 

Содержание OS Series

Страница 1: ... can see the Instrument is setup at P0 and we have known points at positions P1 to P4 We are going to use P1 P2 and P3 for our resection It is important to make sure that the battery is seated in the instrument prior to setting the Total Station up as the weight of the battery will affect the level of the instrument Step One Positioning the Instrument 1 Locate a position where you can observe at l...

Страница 2: ...icates the bubble in the circular level 3 Centre in the Circular level 4 Turn the Instrument until the telescope is parallel To a line between levelling foot screws A and B 5 Set the tilt angle to 0 using foot screws A and B for the X direction and levelling screw C for the y direction Remember Fingers and Thumbs Always turn A and B in opposite directions to half the error on each foot screw 6 Pre...

Страница 3: ...tion is setup on In this case P0 There is no need to enter the Height of the Instrument HI Tap the Next Icon 4 MAGNET Field now asks you to specify your first control point in this case P1 You can select the point from the map or list icons or manually enter the ID If the point is not in the Database you will be taken to the Add Point Screen Enter your Prism Height 0m in this example Sight the Ins...

Страница 4: ...ou to the same screen we saw in step 5 we have selected known point P3 Don t forget pole height and tapped the Measure icon 8 MAGNET Field returns us to our results screen and we can now check our residuals in this case EN and Z values are all zero which is a perfect result In the field an error of a few mm is perfectly normal We can check the individual results in the table and if needed we can r...

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