Topcon ATP1 360 User Manual

NOTE: Prism Constant/Offset refers to a value that compensates for the extra distance the
laser beam travels through the prism in order to reach the plumb line once it initially hits
the glass. It changes with differing construction and therefore changes with each prism
type. Using the wrong Prism Constant will lead to Systematic Errors in a survey.
NOTE: Vertical Height is always measured from the base of the pole to the centre line of
the prism. If unsure of the value, always take a manual measurement using a hand tape.
Before working on site it is important that all equipment has been set-up correctly and
you are aware of the sources of error that can be introduced at this time.
Correct Prism and Instrument settings
(1)
Ensure the ATP1 prism is clean and none of the
faces are damaged.
NOTE: The constant for the ATP1 prism is -7.0 mm
ATP1 360 prism
(2)
Make sure that you use a carbon robotic pole with 1.42 m
marking and that the black 26 mm spacer is always
attached.
(3)
Ensure the correct prism constant has been set in
MAGNET Field.
1

Topcon ATP1 360 Specifications

General

Brand	Topcon
Model	ATP1 360
Category	Robotics
Language	English

Summary

Correct Prism and Instrument Settings

ATP1 360 Prism Identification and Setup

Ensure ATP1 prism is clean, use correct pole and spacer, and check prism constant.

Setting the Correct Prism Constant

Configuring ATP1 360 Prism Constant in MAGNET Field

Set prism constant via MAGNET Field survey settings, selecting ATP1 360 for correct value.

Prism Constant Management

Adding a New Prism Constant

Add a new prism constant by accessing the Prisms screen and selecting the 'Add' option.

New Prism Data Entry

Configuring and Saving New Prism Details

Enter name, constant, and aperture for a new prism, ensuring Hybrid Positioning is not ticked.

Instrument Measurement Modes

Selecting EDM Target Modes

Select appropriate target modes like Prism, Non-Prism, or Sheet for different measurement scenarios.

Data Recording Methods

Precise vs. Quick EDM Data Recording

Understand Precise mode's save/discard prompt and Quick mode's automatic data saving.

Advanced EDM Settings

Configuring EDM Speed and Averaging

Adjust EDM speed/update rate and configure averaging for improved measurement accuracy.