Topcon OS Series Backsight Setup Quick Manual

Total station and magnet field

TOPCON OS SERIES TOTAL STATION AND MAGNET FIELD

OS Series Backsight Setup Quick Guide

This Quick Guide is to show you how to setup and orientate the Topcon OS Series Total

Station using the Backsight Method.

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 and Centring the Instrument with the Optical Plummet

1) Make sure the Tripod legs are spaced at equal intervals and the

Tripod head is roughly level.

Set the Tripod so the head is positioned over the Survey Point.

Make sure the Tripod feet are firmly fixed in the ground.

Tip: Set the height of the Tripod head at mid chest height to

ensure the telescope of the instrument is at eyelevel.

2) Place the Instrument on the Tripod head.

Supporting it with one hand, tighten the centring screw on the

bottom of the unit to make sure it is secured to the Tripod.

3) Looking through the optical plummet eyepiece, turn the optical

plummet eyepiece to focus on the reticule.

Turn the optical plummet focussing ring to focus on the survey

point.

Step Two: Levelling

1) Adjust the levelling foot screws to centre the

survey point in the optical plummet reticule.

2) 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.

Table of Contents

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Page 1 TOPCON OS SERIES TOTAL STATION AND MAGNET FIELD OS Series Backsight Setup Quick Guide This Quick Guide is to show you how to setup and orientate the Topcon OS Series Total Station using the Backsight Method. 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.
Page 2 3) Turn on the OS Series using the Power Button. The “Virtual Bubble” is shown on the screen. “” indicates the bubble in the circular level. 4) Centre “” in the Circular level. (When the bubble is in the centre proceed to step 7) 5) Turn the Instrument until the telescope is parallel To a line between levelling foot screws A and B.
Page 3 Azimuth Backsight Setup using MAGNET Field on the Topcon OS 1) From the MAGNET Field home screen, select [Setup] Option. 2) From the Setup options select the [Backsight] icon. 3) This will take us to the screen to enter the data for the point(s) being used to complete the “Occupation...
Page 4 4) Because entered unknown point name (CP1) in the “Occupation Point” in step 3 which was not in the Database, we have been given an error message. Tap the [Close] icon and MAGNET Field will take you to the “Add Point” screen. 5) On the “Add Point”...
Page 5 End.