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Sokkia SET 550, Setup And Operation, Page: 7 / 33

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Leveling the Total Station

Leveling the Total Station

„

„

Leveling the Total Station must be 

Leveling the Total Station must be 

accomplished to sufficient accuracy otherwise 

accomplished to sufficient accuracy otherwise 

the instrument will not report results

the instrument will not report results

„

„

Leveling the instrument takes 30 to 45 minutes 

Leveling the instrument takes 30 to 45 minutes 

–

–

make sure you can see all targets from the 

make sure you can see all targets from the 

instrument station before going through the 

instrument station before going through the 

process

process

Summary of Contents for SET 550

Page 1: ...Total Station Setup and Total Station Setup and Operation Operation Sokkia SET Total Station Sokkia SET Total Station ...

Page 2: ...Parts of the SET Total Station Parts of the SET Total Station ...

Page 3: ...Parts of the SET Total Station Parts of the SET Total Station ...

Page 4: ...Sokkia SET 550 Total Station Sokkia SET 550 Total Station Keys Screen Keys Screen ...

Page 5: ...SET 550 SET 550 Menu Pages Menu Pages ...

Page 6: ...SET 550 SET 550 Menu Menu Pages Pages ...

Page 7: ...fficient accuracy otherwise the instrument will not report results the instrument will not report results Leveling the instrument takes 30 to 45 minutes Leveling the instrument takes 30 to 45 minutes make sure you can see all targets from the make sure you can see all targets from the instrument station before going through the instrument station before going through the process process ...

Page 8: ...Tripod legs Tripod legs should be should be equally spaced equally spaced Tripod head Tripod head should be should be approximately approximately level level Head should Head should be directly be directly over survey over survey point point ...

Page 9: ...nt Place Instrument on Tripod on Tripod Secure with Secure with centering screw centering screw while bracing the while bracing the instrument with instrument with the other hand the other hand Insert battery in Insert battery in instrument before instrument before leveling leveling ...

Page 10: ...Step 3 Focus on Survey Point Step 3 Focus on Survey Point Focus the optical Focus the optical plummet on the plummet on the survey point survey point ...

Page 11: ...rews to center the Adjust the leveling foot screws to center the survey point in the optical plummet survey point in the optical plummet reticle reticle Center the bubble in the circular level by Center the bubble in the circular level by adjusting the tripod legs adjusting the tripod legs ...

Page 12: ...e level is parallel to 2 of the leveling foot screws Center the bubble using the leveling screws Center the bubble using the leveling screws the the bubble moves toward the screw that is turned bubble moves toward the screw that is turned clockwise clockwise Rotate the instrument 90 degrees and level using the Rotate the instrument 90 degrees and level using the 3 3rd rd leveling screw leveling sc...

Page 13: ...t and center the point by loosening the centering screw and sliding the entire centering screw and sliding the entire instrument instrument After re After re tightening the centering screw check tightening the centering screw check to make sure the plate level bubble is level in to make sure the plate level bubble is level in several directions several directions ...

Page 14: ...utton you should hear an audible beep audible beep The opening screen will be the The opening screen will be the MEAS MEAS screen Select the screen Select the Tilt function Tilt function Adjust the foot level screws to Adjust the foot level screws to exactly center the electronic exactly center the electronic bubble bubble Rotate the instrument 90 Rotate the instrument 90 degrees and repeat degree...

Page 15: ...age is sharply focused focused Point telescope to target and adjust the Point telescope to target and adjust the focus ring until target is focused focus ring until target is focused Move your head from side Move your head from side to to side to test side to test for image shift i e parallax Repeat the for image shift i e parallax Repeat the reticle reticle focus step if parallax is significant f...

Page 16: ...mirror target can be setup directly below the telescope and the mirror target can be setup directly below the target target After powering on the instrument select After powering on the instrument select REM REM from from MEAS MEAS Menu Menu Ht h1 h2 Ht h1 h2 h2 S sin h2 S sin θ θz1 z1 cot cot θ θz2 z2 S cos S cos θ θz1 z1 NOTE Instrument height does not affect this calculation NOTE Instrument hei...

Page 17: ... You do not have to fill out the other mirror target You do not have to fill out the other fields for a REM measurement fields for a REM measurement Press Press ESC ESC to return to the to return to the MEAS MEAS menu menu Select the Select the MEAS MEAS Menu Menu REM REM sight the sight the mirror target press OBS to measure mirror target press OBS to measure S S then then STOP STOP Sight the obj...

Page 18: ...REM Screen Results REM Screen Results To re To re shoot the shoot the mirror target use the mirror target use the OBS on the REM OBS on the REM screen screen ...

Page 19: ... coordinates and have a landmark target at a known azimuth have a landmark target at a known azimuth Backsight Backsight by coordinate must know instrument by coordinate must know instrument coordinates and have mirror target set on a position of coordinates and have mirror target set on a position of known coordinates known coordinates Resection triangulation must have 3 or more mirror Resection ...

Page 20: ...l instrument relative coordinates therefore the initial instrument X Y Z coordinates may be 5000 5000 100 X Y Z coordinates may be 5000 5000 100 Surveys that have to match a downloaded aerial photo Surveys that have to match a downloaded aerial photo from the USGS would have to match UTM NAD83 from the USGS would have to match UTM NAD83 coordinates so the starting point would have to be coordinate...

Page 21: ...st align the instrument with system you must align the instrument with your your working coordinate system working coordinate system Level the instrument on the desired starting Level the instrument on the desired starting survey marker Make sure that on the last survey marker Make sure that on the last leveling step the optical plummet is centered leveling step the optical plummet is centered on ...

Page 22: ...t Select Stn Stn Orientation Orientation and then and then Stn Stn Coordinate Coordinate Edit the Edit the N0 N0 E0 E0 and and Z0 Z0 fields to fields to appropriate values i e northing appropriate values i e northing easting elevation of instrument easting elevation of instrument Enter the instrument and target height if Enter the instrument and target height if necessary necessary Select OK when ...

Page 23: ...he menu displays the zenith angle ZA and current horizontal angle ZA and current horizontal angle HAR and is waiting for you angle HAR and is waiting for you to enter the known angle with to enter the known angle with EDIT EDIT Note if you enter an azimuth angle Note if you enter an azimuth angle as as 85 4514 85 4514 this will be interpreted this will be interpreted as 85 degrees 45 minutes 14 as...

Page 24: ...e mirror target is never mirror target is never shot shot by the beam If by the beam If you can accurately sight on an object or you can accurately sight on an object or landmark such as a building corner the mirror landmark such as a building corner the mirror target is not needed Make sure the instrument target is not needed Make sure the instrument is is locked locked and accurately sighted wit...

Page 25: ... Known point shoot the target at a position of Known point shoot the target at a position of known X Y Z such as a GPS point The result known X Y Z such as a GPS point The result should be within the resolution of the GPS should be within the resolution of the GPS Known angle shoot to a landmark at a known Known angle shoot to a landmark at a known azimuth from the instrument location azimuth from...

Page 26: ...oordinates with coordinates with Stn Stn Coordinate Coordinate and then select OK and return to and then select OK and return to Backsight Backsight Select Select Coord Coord and then enter the and then enter the backsight backsight target coordinates NBS target coordinates NBS EBS ZBS and select OK EBS ZBS and select OK Sight in the target and inspect the Sight in the target and inspect the Azmth...

Page 27: ...ight backsight The resulting X Y Z should be within the The resulting X Y Z should be within the several cm resolution typical for a TS several cm resolution typical for a TS instrument instrument It is a very good idea to shoot other It is a very good idea to shoot other benchmarks within range to make sure benchmarks within range to make sure accuracy is within acceptable limits accuracy is with...

Page 28: ...ment instrument This has the significant This has the significant advantage of not requiring advantage of not requiring the instrument to be leveled the instrument to be leveled exactly on a survey point exactly on a survey point any convenient location any convenient location where you can sight the where you can sight the targets is OK targets is OK The ideal geometry is The ideal geometry is di...

Page 29: ...the order that coordinates be defined first and in the order that they will be shot they will be shot In the top right screen the 1 In the top right screen the 1st st point has been point has been defined and the 2 defined and the 2nd nd point is being entered You point is being entered You can use READ to read in previously entered or can use READ to read in previously entered or measured points ...

Page 30: ...u are shooting to a mirror target shooting to a mirror target ANGLE if not ANGLE if not Select YES to accept Select YES to accept measurement NO to re measurement NO to re shoot shoot EDIT to change target height EDIT to change target height The CALC option will be The CALC option will be displayed when the standard displayed when the standard deviation of northing and easting deviation of northin...

Page 31: ...ght backsight azimuth to the 1 azimuth to the 1st st shot point shot point Press RESULT to display the residuals of Press RESULT to display the residuals of each shot point each shot point large deviations identify large deviations identify bad bad points points If there are no problems press Esc to If there are no problems press Esc to return to main resection screen return to main resection scre...

Page 32: ...eyed coordinate Once the instrument is calibrated the mirror targets Once the instrument is calibrated the mirror targets can be taken down and used elsewhere can be taken down and used elsewhere The instrument height should be entered before The instrument height should be entered before resection is calculated resection is calculated You can only begin shooting resection point 1 from You can onl...

Page 33: ...Resection Notes Resection Notes Certain Certain Geometries Geometries should be should be avoided avoided ...

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