Sokkia SET 550 Manual instruction

Total Station Setup and
Total Station Setup and
Operation
Operation
Sokkia SET Total Station
Sokkia SET Total Station

Parts of the SET Total Station
Parts of the SET Total Station

Parts of the SET Total Station
Parts of the SET Total Station

Sokkia SET 550 Total Station
Sokkia SET 550 Total Station
Keys/Screen
Keys/Screen

SET 550
SET 550
Menu Pages
Menu Pages

SET 550
SET 550
Menu
Menu
Pages
Pages

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

Step 1: Tripod Setup
Step 1: Tripod Setup

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

Step 2: Mount Instrument on Tripod
Step 2: Mount Instrument on Tripod

Place Instrument
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

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

Step 4: Leveling the Instrument
Step 4: Leveling the Instrument

Adjust the leveling foot screws 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

Step 4: Leveling
Step 4: Leveling … …

Loosen the horizontal clamp and turn instrument until
Loosen the horizontal clamp and turn instrument until
plate level is parallel to 2 of the leveling foot screws
plate 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 screw

Step 4: Leveling
Step 4: Leveling … …

Observe the survey point in the optical
Observe the survey point in the optical
plummet and center the point by loosening the
plummet 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

Step 5: Electronically Verify
Step 5: Electronically Verify
Leveling
Leveling

Turn on the instrument by
Turn on the instrument by
pressing and holding the
pressing and holding the “ “on on” ”
button (you should hear an
button (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
degrees and repeat

Step 5: Adjust Image &
Step 5: Adjust Image & Reticle Reticle
Focus
Focus

Release the horizontal & vertical clamps
Release the horizontal & vertical clamps
and point telescope to a featureless light
and point telescope to a featureless light
background
background

Adjust the
Adjust the reticle reticle (i.e. cross (i.e. cross- -hair) focus hair) focus
adjustment until
adjustment until reticle reticle image is sharply image 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 focus step if parallax is significant

NOTE: When the instrument operator
NOTE: When the instrument operator
changes the
changes the reticle reticle focus may need to be focus may need to be
adjusted
adjusted

Measuring the Height of An Object
Measuring the Height of An Object

Level the instrument at a site where the target can be viewed th
Level the instrument at a site where the target can be viewed through the rough the
telescope and the 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 height does not affect this calculation

Measurement of Target Height
Measurement of Target Height

Set the Target Height from
Set the Target Height from “ “MEAS MEAS” ”> > “ “Menu Menu” ”> >
“
“Coordinate Coordinate” ”> > “ “Station Orientation Station Orientation” ”> > “ “Station Station
Coordinate
Coordinate” ”

Set the target height to the measured height of the
Set the target height to the measured height of the
mirror target. 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 object above the target for height
Sight the object above the target for height
measurement
measurement

Select [REM] and then [STOP]
Select [REM] and then [STOP]

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

Calibrating the Instrument
Calibrating the Instrument

Calibration must be completed before coordinates can
Calibration must be completed before coordinates can
be obtained
be obtained

3 possible calibrations:
3 possible calibrations:

Backsight
Backsight by angle: must know instrument coordinates and by angle: must know instrument 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 (triangulation): must have 3 or more mirror
targets established at known 3D coordinates
targets established at known 3D coordinates

3D Coordinates
3D Coordinates

Coordinates may be absolute or relative depending on
Coordinates may be absolute or relative depending on
survey requirements
survey requirements

Surveying the area of a mining site would require
Surveying the area of a mining site would require
relative coordinates, therefore, the initial 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
coordinates so the starting point would have to be
determined by an accurate GPS receiver
determined by an accurate GPS receiver